Curriculum Vitae, Publications, Honors, Students and Academic Genealogy

Total Page:16

File Type:pdf, Size:1020Kb

Curriculum Vitae, Publications, Honors, Students and Academic Genealogy Appendix A Curriculum Vitae, Publications, Honors, Students and Academic Genealogy Do I ever get tired of writing? No. I can do it sitting down, can’t I? Simon Vestdijk (1898–1971) A.1 Curriculum Vitae Figures A.1 and A.2 show Oort’s curriculum vitae as he has written it himself. From the years quoted, it can be concluded that he compiled this after he had turned seventy. A.2 Publications by J.H. Oort The bibliography of Oort below is taken from the JKM-Inventory [1] by J.K. Katgert- Merkelijn, which contains a complete list of all Oort’s publications. The list below is not complete but contains only the papers referred to in this book. The original list in the JKM-Inventory [1] (appendix, starting on p. 161) covers the period of 1922– 1992 and was compiled first by Dini Ondei-Beneker, Oort’s longtime secretary, and by Jay Ekers, Willem N. Brouw and Hugo van Woerden, for the Liber Amicorum, LibAm80 [2], of 1980 and has been updated and revised by Dini Ondei and Jet Katgert- Merkelijn. The original designations as in the JKM-Inventory [1] have been kept, so e.g. Oort (1981d) is for his autobiographical essay in the Annual Review, AnnRev81 Dutch writer. No Dutch or Flemish author ever won the Nobel Prize for Literature. Vestdijk prob- ably came closest; between 1950 and 1966, for which the Nobel archives are public, he has been nominated fifteen times. © Springer Nature Switzerland AG 2019 621 P. C. van der Kruit, Jan Hendrik Oort, Astrophysics and Space Science Library 459, https://doi.org/10.1007/978-3-030-17801-7 622 Appendix A: Curriculum Vitae, Publications, Honors, Students … Fig. A.1 Oort’s own text for his c.v. It must have been produced after he turned seventy [3] There are a few additions to this list. The first one—Oort (1921)—is a Dutch article about Kapteyn that he wrote as a student in 1921 and that has been published in the yearbook (studentenalmanak) of the student association Vindicat atque Polit Appendix A: Curriculum Vitae, Publications, Honors, Students … 623 Fig. A.2 Oort’s own text for his c.v.–continued in Groningen. Other additions are Oort (1925g), Oort (1943g) and Oort (1951l). The contributions of Oort to the OECD Symposium on Large Radio Telescopes in Paris in 1961, have been quoted incompletely in the JKM-Inventory [1]. Only 1962j was identified there as the conference contribution, 1962k was identified as a BCAP Memo, but not as part of this conference, while 1962l and 1962m are new additions here. Many, but far from all, of these publications have been listed by the NASA Astron- omy Data System ADS (see Appendix C.1) and usually scanned copies are available there. I have indicated the ADS code at the end of the full reference between square brackets. Another source, which does require access arrangements, is the non-profit organization JSTOR at jstor.org. The publications by the Royal Netherlands Academy of Arts and Sciences (KNAW) are made available on the Digital Library—Dutch His- tory of science web centre [384]. A complete list of Oort’s publications with links to scans at ADS or other ‘>places can be found on the accompanying Website www.astro.rug.nl/JHOort. Oort. J. H. 1921. Iets over het werk van Prof. J.C. Kapteyn, Groningensche Studen- tenalmanak voor het jaar 1922, vier-en-negentigste jaargang, 202–215. Oort, J. H. 1922. Some peculiarities in the motion of stars of high velocity. Bulletin of the Astronomical Institutes of the Netherlands, 1, 133–137. [1922BAN.....1..133O] Schilt, J. & Oort, J. H. 1923. The frequency of a component of the linear velocity for stars brighter than 3m. 8 of spectral types F, G, K and M, derived from the proper motions of Boss’ Catalogue. Hoitsema brothers, Groningen. 624 Appendix A: Curriculum Vitae, Publications, Honors, Students … Oort, J. H. & H.M. Marsh, H. M. 1924a. On the proper motions of stars of the thirteenth magnitude. Popular Astronomy, 32, 559–561. [1924PA.....32..559O] Oort, J. H. 1924b. A comparison of the average velocity of binaries with that of single stars. Astronomical Journal, 35, 141–144. [1924AJ.....35..141O] Oort, J. H. 1924c. Note on the difference in velocity between absolutely bright and faint stars. Proceedings of the National Academy of Sciences (U.S.A.), 10, 253–256. [1924PNAS...10..253O] Oort, J. H. 1924d. On a possible relation between globular clusters and stars of high velocity. Proceedings of the National Academy of Sciences (U.S.A.), 10, 256–260. [1924PNAS...10..256O] Oort, J. H. 1924e. A comparison of the average velocity of binaries with that of single stars. Popular Astronomy, 32, 226–227. [1924PA.....32..226O] Sanders, C. & Oort, J. H. 1925b. A discussion of the determination of declinations from azimuth measures made near the equator. Bulletin of the Astronomical Institutes of the Netherlands, 2, 201–208. [1925BAN.....2..201S] Errata: BAN 2, V. de Sitter, W. & Oort, J. H. 1925d. Provisional scheme for the determination of fundamental declinations from azimuth observations. Bulletin of the Astronomical Institutes of the Netherlands, 3, 1–6. [1925BAN.....3....1D] Oort, J. H. & Doorn, N. W. 1925f. The solar motion from radial velocities of the absolutely brightest stars of spectra F, G, K and M. Bulletin of the Astronomical Institutes of the Netherlands, 3, 71. [1925BAN.....3...71O] Oort, J. H. 1925g. Bepaling van declinatie’s onafhankelijk van vertikale refractie (abstract). Hemel & Dampking, 23, 79–80. Oort, J. H. 1926a. Asymmetry in the distribution of stellar velocities,TheObser- vatory, 49, 302–304 [1926Obs....49..302O] Oort, J. H. 1926b. The stars of high velocity. PhD thesis, University of Groningen, also: Publications of the Kapteyn Astronomical Laboratory Groningen, 40, 1–75. [1926PhDT.........1O] Oort, J. H. 1927a. Niet-lichtgevende materie in het sterrenstelsel, Inaugural Lec- ture, reprinted in Hemel and Dampkring 25, 13–21 and 60–70. Non-Light emitting matter in the Stellar System, translated by P. C. van der Kruit in the The Legacy of J.C. Kapteyn, Appendix A. Oort, J. H. 1927c. Observational evidence confirming Lindblad’s hypothesis of a rotation of the Galactic System. Bulletin of the Astronomical Institutes of the Netherlands, 3, 275–282. [1927BAN.....3..275O] Oort, J. H. 1927d. Investigations concerning the rotational motion of the Galac- tic System together with new determinations of secular parallaxes, precession and motion of the equinox. Bulletin of the Astronomical Institutes of the Netherlands, 4, 79–89 (Errata: 4, 94). [1927BAN.....4...79O] Oort, J. H. 1927e. Additional notes concerning the rotation of the Galac- tic System. Bulletin of the Astronomical Institutes of the Netherlands, 4, 91–92. [1927BAN.....4...91O] Oort, J, H. 1927f. Summary of the principal radial velocity data used for the results of Bull. Astr. Inst. Netherlands 3 275 and 4 79. Bulletin of the Astronomical Institutes of the Netherlands, 4, 93–94. [1927BAN.....4...93O] Appendix A: Curriculum Vitae, Publications, Honors, Students … 625 Oort, J. H. 1928a. An investigation of the constant of refraction from observations at Leiden and at the Cape. Bulletin of the Astronomical Institutes of the Netherlands, 4, 137–142. [1928BAN.....4..137O] Oort, J. H. 1928b. Dynamics of the Galactic System in the vicinity of the Sun. Bulletin of the Astronomical Institutes of the Netherlands, 4, 269–284. [1928BAN..... 4..269O] Oort, J. H. 1928c. Catalogue of 460 stars for the epoch and equinox 1885.0, from meridian observations made at Leiden in the years 1880 to 1897. Annalen van de Sterrewacht te Leiden, 13, D1–D47. [1928AnLei..13D...1O] Oort, J. H. 1929a. Note on O. Struve’s intensity estimates of the Calcium K line in early-type stars. Bulletin of the Astronomical Institutes of the Netherlands, 5, 105–107. [1929BAN.....5..105O Oort, J. H. 1930a. The estimated number of high velocities among stars selected according to proper motion. Bulletin of the Astronomical Institutes of the Nether- lands, 5, 189–192. [1930BAN.....5..189O] Oort, J. H. 1930b. The motion of the Sun with respect to the interstellar gas. Bulletin of the Astronomical Institutes of the Netherlands, 5, 192–194. [1930BAN..... 5..192O] Oort. J. H. 1930c. Note on the velocities of extragalactic nebulae. Bulletin of the Astronomical Institutes of the Netherlands, 5, 239–241. [1930BAN.....5..239O] Oort, J. H. 1931a. Some problems concerning the distribution of luminosities and peculiar velocities of extragalactic nebulae. Bulletin of the Astronomical Institutes of the Netherlands, 6, 155–160. [1931BAN.....6..155O] Oort, J. H. 1931b. Licht-absorptie in het Melkwegstelsel. Hemel & Dampkring, 29, 41–49. Oort. J. H. 1932a. The force exerted by the stellar system in the direction perpen- dicular to the Galactic plane and some related problems. Bulletin of the Astronomical Institutes of the Netherlands, 6, 249–287. [1932BAN.....6..249O] Oort, J. H. 1932b. Note on the distribution of luminosities of K and M giants. Bulletin of the Astronomical Institutes of the Netherlands, 6, 289–294. [1932BAN..... 6..289O] Oort, J. H. 1935a. Obituary: Willem de Sitter, The Observatory, 58, 22–27. [1935Obs....58...22O] Oort, J. H. 1936b. De bouw der sterrenstelsels, Inaugural lecture, reprinted in Hemel & Dampkring, 34, 1–16. Oort, J. H. 1936c. Mean parallaxes of faint stars derived from the Radcliffe Cata- logue of proper motions. Bulletin of the Astronomical Institutes of the Netherlands, 8, 75–104. [1936BAN.....8...75O] Oort, J. H. 1937a. A redetermination of the constant of precession, the motion of the equinox and the rotation of the Galaxy from faint stars observed at the McCormick Observatory. Bulletin of the Astronomical Institutes of the Netherlands, 8, 149–155.
Recommended publications
  • Helium-Star Mass Loss and Its Implications for Black-Hole
    Helium-Star Mass Loss and its Implications for Black-Hole Formation and Supernova Progenitors Onno R. Pols1,2 and Jasinta D.M. Dewi3,4 1 Department of Mathematics, PO Box 28M, Monash University, Vic 3800, Australia 2 Astronomical Institute, Postbus 80000, 3508 TA Utrecht, The Netherlands [email protected] 3 Astronomical Institute, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands [email protected] 4 Bosscha Observatory and Department of Astronomy, Lembang 40391, Bandung, Indonesia Abstract Recently the observationally derived stellar-wind mass-loss rates for Wolf- Rayet stars, or massive naked helium stars, have been revised downwards by a substantial amount. We present evolutionary calculations of helium stars incor- porating such revised mass-loss rates, as well as mass transfer to a close compact binary companion. Our models reach final masses well in excess of 10 M⊙, con- sistent with the observed masses of black holes in X-ray binaries. This resolves the discrepancy found with previously assumed high mass-loss rates between the final masses of stars which spend most of their helium-burning lifetime as Wolf- Rayet stars (∼ 3 M⊙) and the minimum observed black hole masses (6 M⊙). Our arXiv:astro-ph/0203308v1 19 Mar 2002 calculations also suggest that there are two distinct classes of progenitors for Type Ic supernovae: one with very large initial masses (∼> 35 M⊙), which are still massive when they explode and leave black hole remnants, and one with moderate initial masses (∼ 12 − 20 M⊙) undergoing binary interaction, which end up with small pre-explosion masses and leave neutron star remnants.
    [Show full text]
  • Rootsmagic Document
    First Generation 1. Geert Somsen1 was born about 1666 in Aalten, GE, Netherlands. He died about 1730 in Aalten, GE, Netherlands. He has a reference number of [P272]. (Boeinck), ook wel: Sumps. Geert werd op 24-06-1686 (Sint Jan) ingeschreven als lidmaat van de Nederduits Gereformeerde Gemeente Aalten [Boeinck (also: Sumps). Geert was admitted as a member of the Dutch Reformed Church of Aalten on 24-06-1686 (St. John)]. Geert Somsen and Mechtelt Gelkinck had marriage banns published on 28 Apr 1689 in Aalten, GE, Netherlands. They were married on 27 May 1689 in Aalten, GE, Netherlands. Mechtelt Gelkinck1 (daughter of Roelof Somsen and Geesken Rensen) was born before 25 Aug 1662 in Aalten, GE, Netherlands. 2 She was christened on 25 Aug 1662 in Dinxperlo, GE, Netherlands.2 She died in Aalten, GE, Netherlands. She has a reference number of [P273]. ook wel: Meghtelt. Also: Sumps. op 29-09-1688 werd Mechtelt als lidmaat v.d. Nederduits Geref. Ge,. Aalten ingeschreven [also: Meghtelt. Also: Sumps. On 29 Sep 1688 she was registered as Mechtelt as a member of the Dutch Reformed Church in Aalten]. Geert Somsen and Mechtelt Gelkinck had the following children: +2 i. Jantjen Somsen (born on 9 Nov 1690). +3 ii. Roelof Somsen (born about 1692). +4 iii. Geesken Somsen (born in 1695). +5 iv. Wander Somsen (born on 9 Jul 1699). +6 v. Frerik Somsen (born about Jan 1703). Second Generation 2. Jantjen Somsen1 (Geert-1) was born on 9 Nov 1690 in Aalten, GE, Netherlands. She died on 15 Sep 1767 in Dinxperlo, GE, Netherlands.
    [Show full text]
  • Qisar-Alexander-Ollongren-Astrolinguistics.Pdf
    Astrolinguistics Alexander Ollongren Astrolinguistics Design of a Linguistic System for Interstellar Communication Based on Logic Alexander Ollongren Advanced Computer Science Leiden University Leiden The Netherlands ISBN 978-1-4614-5467-0 ISBN 978-1-4614-5468-7 (eBook) DOI 10.1007/978-1-4614-5468-7 Springer New York Heidelberg Dordrecht London Library of Congress Control Number: 2012945935 © Springer Science+Business Media New York 2013 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, speci fi cally the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on micro fi lms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Exempted from this legal reservation are brief excerpts in connection with reviews or scholarly analysis or material supplied speci fi cally for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Duplication of this publication or parts thereof is permitted only under the provisions of the Copyright Law of the Publisher’s location, in its current version, and permission for use must always be obtained from Springer. Permissions for use may be obtained through RightsLink at the Copyright Clearance Center. Violations are liable to prosecution under the respective Copyright Law. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a speci fi c statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.
    [Show full text]
  • Pos(Westerbork)002 Historical Introduction Historical S 4.0 International License (CC BY-NC-ND 4.0)
    Historical Introduction PoS(Westerbork)002 Richard Strom ASTRON Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands E-mail: [email protected] 50 Years Westerbork Radio Observatory, A Continuing Journey to Discoveries and Innovations Richard Strom, Arnold van Ardenne, Steve Torchinsky (eds) Published with permission of the Netherlands Institute for Radio Astronomy (ASTRON) under the terms of the Creative CommonsAttribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). Chapter 1 Historical introduction Richard Strom* rom the English longbows at the battle of Crécy (1346) to Winston Chur- chill’s world war I mobilized cannon (its true identity hidden behind the Fpseudonym “[water] tank”), warfare has always pushed technological innovation to new fronts. The second world war (WWII) was no exception. It gave us technology ranging from the dynamo-powered flashlight (a Philips invention) to jet engines, and space-capable rockets (Germany’s V2), not to mention (in a completely different realm) the mass production of Penicillin. In fact, it could be argued that WWII inventions marked the inception of the modern technological era1. In the field of electronics, the war led to innovations such as radio navigation, aircraft landing systems, and radar. It was these developments which were to * ASTRON, Univer- sity of Amsterdam, have a revolutionary impact on astronomy, initially in Britain, Australia and the The Netherlands United States. But the story begins in the US, with the electronics of the 1920s and ‘30s. Figure 1. Karl G. Jansky (c. 1933) Around 1930, there was increasing interest in the use of radio frequencies for communication. One of the main players, the Bell Telephone Laboratories in New Jersey, asked their research engineer, Karl Jansky (Figure 1), to investigate the inter- ference environment in the “short-wave” band around 20 MHz.
    [Show full text]
  • Enabling Sustainable Exploration Through the Commercial Development of Space
    54th International Astronautical Congress 2003 (IAC 2003) Bremen, Germany 29 September - 3 October 2003 Volume 1 of 8 ISBN: 978-1-61839-418-7 Printed from e-media with permission by: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 Some format issues inherent in the e-media version may also appear in this print version. Copyright© (2003) by the International Astronautical Federation All rights reserved. Printed by Curran Associates, Inc. (2012) For permission requests, please contact the International Astronautical Federation at the address below. International Astronautical Federation 94 bis, Avenue de Suffren 75015 PARIS - France Phone: +33 1 45 67 42 60 Fax: +33 1 42 73 21 20 [email protected] Additional copies of this publication are available from: Curran Associates, Inc. 57 Morehouse Lane Red Hook, NY 12571 USA Phone: 845-758-0400 Fax: 845-758-2634 Email: [email protected] Web: www.proceedings.com TABLE OF CONTENTS VOLUME 1 Enabling Sustainable Exploration through the Commercial Development of Space .................................................................................1 Mark Nall, Joseph Casas Space Telescope Mission Design For L2 Point Stationing .............................................................................................................................6 Jill M. Cattrysse Interplanetary Missions Utilising Capture and Escape Through Lagrange Points..................................................................................14 Stephen Kemble A Numerical Study of the Gravitational
    [Show full text]
  • Radio Astronomy
    Theme 8: Beyond the Visible I: radio astronomy Until the turn of the 17th century, astronomical observations relied on the naked eye. For 250 years after this, although astronomical instrumentation made great strides, the radiation being detected was still essentially confined to visible light (Herschel discovered infrared radiation in 1800, and the advent of photography opened up the near ultraviolet, but these had little practical significance). This changed dramatically in the mid-20th century with the advent of radio astronomy. 8.1 Early work: Jansky and Reber The atmosphere is transparent to visible light, but opaque to many other wavelengths. The only other clear “window” of transparency lies in the radio region, between 1 mm and 30 m wavelength. One might expect that the astronomical community would deliberately plan to explore this region, but in fact radio astronomy was born almost accidentally, with little if any involvement of professional astronomers. Karl Jansky (1905−50) was a radio engineer at Bell Telephone. In 1932, while studying the cause of interference on the transatlantic radio-telephone link, he discovered that part of the interference had a periodicity of one sidereal day (23h 56m), and must therefore be coming from an extraterrestrial source. By considering the time at which the interference occurred, Jansky identified the source as the Milky Way. This interesting finding was completely ignored by professional astronomers, and was followed up only by the radio engineer and amateur astronomer Grote Reber (1911−2002). Reber built a modern-looking paraboloid antenna and constructed maps of the radio sky, which also failed to attract significant professional attention.
    [Show full text]
  • Q&A with Lauren Gunderson
    Q&A with Lauren Gunderson Interviewed by Joelle Seligson The United States’ most produced living playwright brings stories of science into the spotlight. Lauren Gunderson (laurengunderson.com) first married science and the stage in Background, a production that journeys back through the life of a cosmologist and through time itself. She’s now adding science, technology, engineering, and math (STEM)–oriented children’s books to her repertoire, entrancing young readers with imaginative tales tied to the scientific process. Gunderson chatted with Dimensions about why she’s driven to make audiences care about science and those who have advanced it. Lauren, which came first for you, theater or science? Theater was my first love, the first real sense of drive that I felt as a kid. Part of it was just the excitement of being on stage and telling stories. And also for me, the idea of writing, that was another big moment for me, realizing that you didn’t just say the words, you could write them. But I found out really quickly when you’re a writer and a performer, you get to ask yourself, OK—what I realized really quickly was, I mean obviously you need a subject. To be a playwright is a great thrill, but what are you going to write about? And I had a few wonderful science teachers, a biology teacher and a physics teacher, who used history and the scientists themselves to help teach us the core courses and the core themes and everything. And to me that was a big moment of oh, these are characters, and that science came from not just a mind but from a person, a personality, a time, an era.
    [Show full text]
  • Dirk Brouwer
    NATIONAL ACADEMY OF SCIENCES D I R K B R O U W ER 1902—1966 A Biographical Memoir by G . M . C LEMENCE Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 1970 NATIONAL ACADEMY OF SCIENCES WASHINGTON D.C. DIRK BROUWER September 1, 1902-January 31, 1966 BY G. M. CLEMENCE IRK BROUWER, who contributed more to dynamical astron- D omy than any other astronomer of his time, died on January 31, 1966, after a week in hospital; his death was occa- sioned by an acute disorder of the heart. He is survived by his widow and an only son, James. Brouwer was born in Rotterdam, the Netherlands, on September 1, 1902, the son of a civil service employee. As a stu- dent in the University of Leiden he studied mathematics and astronomy, coming under the influence of Willem de Sitter, who in his own day was the dean of that branch of astronomy in which Brouwer was to do most of his work. Receiving the Ph.D. degree in 1927 under de Sitter, Brouwer came to the United States as a fellow of the International Education Board, spending a year at the University of California in Berkeley and at Yale University, where he was to remain the rest of his life. His initial appointment at Yale was in 1928 as research as- sistant to Ernest W. Brown, who was then the greatest living authority on the motion of the moon.
    [Show full text]
  • Anton Pannekoek: Ways of Viewing Science and Society
    STUDIES IN THE HISTORY OF KNOWLEDGE Tai, Van der Steen & Van Dongen (eds) Dongen & Van Steen der Van Tai, Edited by Chaokang Tai, Bart van der Steen, and Jeroen van Dongen Anton Pannekoek: Ways of Viewing Science and Society Ways of Viewing ScienceWays and Society Anton Pannekoek: Anton Pannekoek: Ways of Viewing Science and Society Studies in the History of Knowledge This book series publishes leading volumes that study the history of knowledge in its cultural context. It aspires to offer accounts that cut across disciplinary and geographical boundaries, while being sensitive to how institutional circumstances and different scales of time shape the making of knowledge. Series Editors Klaas van Berkel, University of Groningen Jeroen van Dongen, University of Amsterdam Anton Pannekoek: Ways of Viewing Science and Society Edited by Chaokang Tai, Bart van der Steen, and Jeroen van Dongen Amsterdam University Press Cover illustration: (Background) Fisheye lens photo of the Zeiss Planetarium Projector of Artis Amsterdam Royal Zoo in action. (Foreground) Fisheye lens photo of a portrait of Anton Pannekoek displayed in the common room of the Anton Pannekoek Institute for Astronomy. Source: Jeronimo Voss Cover design: Coördesign, Leiden Lay-out: Crius Group, Hulshout isbn 978 94 6298 434 9 e-isbn 978 90 4853 500 2 (pdf) doi 10.5117/9789462984349 nur 686 Creative Commons License CC BY NC ND (http://creativecommons.org/licenses/by-nc-nd/3.0) The authors / Amsterdam University Press B.V., Amsterdam 2019 Some rights reserved. Without limiting the rights under copyright reserved above, any part of this book may be reproduced, stored in or introduced into a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording or otherwise).
    [Show full text]
  • 212 Publications of the Some Pioneer
    212 PUBLICATIONS OF THE SOME PIONEER OBSERVERS1 By Frank Schlesinger In choosing a subject upon which to speak to you this eve- ning, I have had to bear in mind that, although this is a meeting of the Astronomical Society of the Pacific, not many of my audience are astronomers, and I am therefore debarred from speaking on too technical a matter. Under these circumstances I have thought that a historical subject, and one that has been somewhat neglected by the, formal historians of our science, may be of interest. I propose to outline, very briefly of course, the history of the advances that have been made in the accuracy of astronomical measurements. To do this within an hour, I must confine myself to the measurement of the relative places of objects not very close together, neglecting not only measure- ments other than of angles, but also such as can be carried out, for example, by the filar micrometer and the interferometer; these form a somewhat distinct chapter and would be well worth your consideration in an evening by themselves. It is clear to you, I hope, in how restricted a sense I am using the word observer ; Galileo, Herschel, and Barnard were great observers in another sense and they were great pioneers. But of their kind of observing I am not to speak to you tonight. My pioneers are five in number ; they are Hipparchus in the second century b.c., Tycho in the sixteenth century, Bradley in the eighteenth, Bessel in the first half of the nineteenth century and Rüther fur d in the second half.
    [Show full text]
  • Blanchardstown Urban Structure Plan Development Strategy and Implementation
    BLANCHARDSTOWN DEVELOPMENT STRATEGY URBAN STRUCTURE PLAN AND IMPLEMENTATION VISION, DEVELOPMENT THEMES AND OPPORTUNITIES PLANNING DEPARTMENT SPRING 2007 BLANCHARDSTOWN URBAN STRUCTURE PLAN DEVELOPMENT STRATEGY AND IMPLEMENTATION VISION, DEVELOPMENT THEMES AND OPPORTUNITIES PLANNING DEPARTMENT • SPRING 2007 David O’Connor, County Manager Gilbert Power, Director of Planning Joan Caffrey, Senior Planner BLANCHARDSTOWN URBAN STRUCTURE PLAN E DEVELOPMENT STRATEGY AND IMPLEMENTATION G A 01 SPRING 2007 P Contents Page INTRODUCTION . 2 SECTION 1: OBJECTIVES OF THE BLANCHARDSTOWN URBAN STRUCTURE PLAN – DEVELOPMENT STRATEGY 3 BACKGROUND PLANNING TO DATE . 3 VISION STATEMENT AND KEY ISSUES . 5 SECTION 2: DEVELOPMENT THEMES 6 INTRODUCTION . 6 THEME: COMMERCE RETAIL AND SERVICES . 6 THEME: SCIENCE & TECHNOLOGY . 8 THEME: TRANSPORT . 9 THEME: LEISURE, RECREATION & AMENITY . 11 THEME: CULTURE . 12 THEME: FAMILY AND COMMUNITY . 13 SECTION 3: DEVELOPMENT OPPORTUNITIES – ESSENTIAL INFRASTRUCTURAL IMPROVEMENTS 14 SECTION 4: DEVELOPMENT OPPORTUNITY AREAS 15 Area 1: Blanchardstown Town Centre . 16 Area 2: Blanchardstown Village . 19 Area 3: New District Centre at Coolmine, Porterstown, Clonsilla . 21 Area 4: Blanchardstown Institute of Technology and Environs . 24 Area 5: Connolly Memorial Hospital and Environs . 25 Area 6: International Sports Campus at Abbotstown. (O.P.W.) . 26 Area 7: Existing and Proposed District & Neighbourhood Centres . 27 Area 8: Tyrrellstown & Environs Future Mixed Use Development . 28 Area 9: Hansfield SDZ Residential and Mixed Use Development . 29 Area 10: North Blanchardstown . 30 Area 11: Dunsink Lands . 31 SECTION 5: RECOMMENDATIONS & CONCLUSIONS 32 BLANCHARDSTOWN URBAN STRUCTURE PLAN E G DEVELOPMENT STRATEGY AND IMPLEMENTATION A 02 P SPRING 2007 Introduction Section 1 details the key issues and need for an Urban Structure Plan – Development Strategy as the planning vision for the future of Blanchardstown.
    [Show full text]
  • A2241: Clusters with Head-Tails at X-Rays L. Norci
    A2241: CLUSTERS WITH HEAD-TAILS AT X-RAYS L. NORCI Dunsink Observatory Castleknock, Dublin 15, Ireland L. FERETTI Istituto di Radio Astronomia Via Gobetti 101, 1-40129 Bologna, Italy AND E.J.A. MEURS Dunsink Observatory Castleknock, Dublin 15, Ireland Abstract. A ROSAT Ρ SPC image of the galaxy cluster Abell 2241 has been obtained, showing X-ray emission from the intracluster medium and from individual objects. The brightness distribution of the cluster gas is used to assess the physical conditions at the location of two tailed radio galaxies (in A2241E and A2241W, at different redshifts). Together with radio and X-ray information on the two galaxies themselves the results are of relevance to the question of energy equipartition in radio sources. 1. Background A cluster intergalactic medium plays an important role in determining the morphology and evolution of radio sources. The external gas can interact with a radio source in different ways: confining the source, modifying the source morphology via ram-pressure and possibly feeding the active nucleus. We have obtained ROSAT X-ray data of the region of the cluster Abell 2241, which was previously studied by Bijleveld & Valentijn (1982). A2241 was originally classified as an irregular galaxy cluster, until redshift mea- surements showed it to consist of two separate clusters projected onto each other: A2241W and A2241E, located at redshifts of 0.0635 and 0.1021, respectively. 361 R. Ekers et al. (eds.), Extragalactic Radio Sources, 361-362. © 1996 IAU. Printed in the Netherlands. Downloaded from https://www.cambridge.org/core. IP address: 170.106.33.14, on 29 Sep 2021 at 08:43:38, subject to the Cambridge Core terms of use, available at https://www.cambridge.org/core/terms.
    [Show full text]