Annual Report / Rapport Annuel / Jahresbericht 1996
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"AUSTRALIA and HER NAVIGATORS" [By the President, COMMANDER NORMAN S
78 PRESIDENTIAL ADDRESS "AUSTRALIA AND HER NAVIGATORS" [By the President, COMMANDER NORMAN S. PIXLEY, C.M.G., M.B.E., V.R.D., Kt.O.N., F.R.Hist.S.Q.] (Read at a Meeting of the Society on 24 September 1970.) Joseph Conrad in his writings, refers to "The mysteriously born traditions of seacraft, command, and unity in an occu pation in which men's lives depend on each other." Still true today, how much more was this so with the mariners of long ago, who sailed in smaU ships for thousands of lonely leagues through unknown seas, for on them alone rested the safety of the ship and all on board. Dr. Johnson wrote "No man will be a saUor who has con trivance to get himself into jaU, for being in a ship is being in a jail with the chance of being drowned." There was more than an element of truth in this, for the seaman who refused to sail could be clapped in jail; whUst THE PRESIDENT, COMMANDER NORMAN S PIXLEY 79 those who did sail faced months in a confined space with acute discomfort, severe punishment at times, and provisions and water which deteriorated as the voyage proceeded. Scurvy kiUed more than storm and shipwreck until James Cook in his first voyage proved that it could be prevented. Clothing was rarely changed, the sailor coming wet to his hammock from his watch on deck in bad weather. Rats and cockroaches lived and thrived amongst the pro visions, adding to the problems of hygiene and health. -
CO Multi-Line Imaging of Nearby Galaxies (COMING) IV. Overview Of
Publ. Astron. Soc. Japan (2018) 00(0), 1–33 1 doi: 10.1093/pasj/xxx000 CO Multi-line Imaging of Nearby Galaxies (COMING) IV. Overview of the Project Kazuo SORAI1, 2, 3, 4, 5, Nario KUNO4, 5, Kazuyuki MURAOKA6, Yusuke MIYAMOTO7, 8, Hiroyuki KANEKO7, Hiroyuki NAKANISHI9 , Naomasa NAKAI4, 5, 10, Kazuki YANAGITANI6 , Takahiro TANAKA4, Yuya SATO4, Dragan SALAK10, Michiko UMEI2 , Kana MOROKUMA-MATSUI7, 8, 11, 12, Naoko MATSUMOTO13, 14, Saeko UENO9, Hsi-An PAN15, Yuto NOMA10, Tsutomu, T. TAKEUCHI16 , Moe YODA16, Mayu KURODA6, Atsushi YASUDA4 , Yoshiyuki YAJIMA2 , Nagisa OI17, Shugo SHIBATA2, Masumichi SETA10, Yoshimasa WATANABE4, 5, 18, Shoichiro KITA4, Ryusei KOMATSUZAKI4 , Ayumi KAJIKAWA2, 3, Yu YASHIMA2, 3, Suchetha COORAY16 , Hiroyuki BAJI6 , Yoko SEGAWA2 , Takami TASHIRO2 , Miho TAKEDA6, Nozomi KISHIDA2 , Takuya HATAKEYAMA4 , Yuto TOMIYASU4 and Chey SAITA9 1Department of Physics, Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo 060-0810, Japan 2Department of Cosmosciences, Graduate School of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo 060-0810, Japan 3Department of Physics, School of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo 060-0810, Japan 4Division of Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan 5Tomonaga Center for the History of the Universe (TCHoU), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan 6Department of Physical Science, Osaka Prefecture University, Gakuen 1-1, -
A Hot Subdwarf-White Dwarf Super-Chandrasekhar Candidate
A hot subdwarf–white dwarf super-Chandrasekhar candidate supernova Ia progenitor Ingrid Pelisoli1,2*, P. Neunteufel3, S. Geier1, T. Kupfer4,5, U. Heber6, A. Irrgang6, D. Schneider6, A. Bastian1, J. van Roestel7, V. Schaffenroth1, and B. N. Barlow8 1Institut fur¨ Physik und Astronomie, Universitat¨ Potsdam, Haus 28, Karl-Liebknecht-Str. 24/25, D-14476 Potsdam-Golm, Germany 2Department of Physics, University of Warwick, Coventry, CV4 7AL, UK 3Max Planck Institut fur¨ Astrophysik, Karl-Schwarzschild-Straße 1, 85748 Garching bei Munchen¨ 4Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, USA 5Texas Tech University, Department of Physics & Astronomy, Box 41051, 79409, Lubbock, TX, USA 6Dr. Karl Remeis-Observatory & ECAP, Astronomical Institute, Friedrich-Alexander University Erlangen-Nuremberg (FAU), Sternwartstr. 7, 96049 Bamberg, Germany 7Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA 8Department of Physics and Astronomy, High Point University, High Point, NC 27268, USA *[email protected] ABSTRACT Supernova Ia are bright explosive events that can be used to estimate cosmological distances, allowing us to study the expansion of the Universe. They are understood to result from a thermonuclear detonation in a white dwarf that formed from the exhausted core of a star more massive than the Sun. However, the possible progenitor channels leading to an explosion are a long-standing debate, limiting the precision and accuracy of supernova Ia as distance indicators. Here we present HD 265435, a binary system with an orbital period of less than a hundred minutes, consisting of a white dwarf and a hot subdwarf — a stripped core-helium burning star. -
Winter Constellations
Winter Constellations *Orion *Canis Major *Monoceros *Canis Minor *Gemini *Auriga *Taurus *Eradinus *Lepus *Monoceros *Cancer *Lynx *Ursa Major *Ursa Minor *Draco *Camelopardalis *Cassiopeia *Cepheus *Andromeda *Perseus *Lacerta *Pegasus *Triangulum *Aries *Pisces *Cetus *Leo (rising) *Hydra (rising) *Canes Venatici (rising) Orion--Myth: Orion, the great hunter. In one myth, Orion boasted he would kill all the wild animals on the earth. But, the earth goddess Gaia, who was the protector of all animals, produced a gigantic scorpion, whose body was so heavily encased that Orion was unable to pierce through the armour, and was himself stung to death. His companion Artemis was greatly saddened and arranged for Orion to be immortalised among the stars. Scorpius, the scorpion, was placed on the opposite side of the sky so that Orion would never be hurt by it again. To this day, Orion is never seen in the sky at the same time as Scorpius. DSO’s ● ***M42 “Orion Nebula” (Neb) with Trapezium A stellar nursery where new stars are being born, perhaps a thousand stars. These are immense clouds of interstellar gas and dust collapse inward to form stars, mainly of ionized hydrogen which gives off the red glow so dominant, and also ionized greenish oxygen gas. The youngest stars may be less than 300,000 years old, even as young as 10,000 years old (compared to the Sun, 4.6 billion years old). 1300 ly. 1 ● *M43--(Neb) “De Marin’s Nebula” The star-forming “comma-shaped” region connected to the Orion Nebula. ● *M78--(Neb) Hard to see. A star-forming region connected to the Orion Nebula. -
Optical BVI Imaging and HI Synthesis Observations of the Dwarf Irregular
Astronomy & Astrophysics manuscript no. ms December 4, 2018 (DOI: will be inserted by hand later) Optical BVI Imaging and H i Synthesis Observations of the Dwarf Irregular Galaxy ESO 364-G029 M. B. N. Kouwenhoven1,2,3, M. Bureau4, S. Kim5, and P. T. de Zeeuw2 1 Department of Physics and Astrophysics, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom (t.kouwenhoven@sheffield.ac.uk) 2 Sterrewacht Leiden, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, Netherlands ([email protected]) 3 Astronomical Institute Anton Pannekoek, Kruislaan 403, 1098 SJ, Amsterdam, The Netherlands 4 Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom ([email protected]) 5 Astronomy & Space Science Department, Sejong University, 98 Kwangjin-gu, Kunja-dong, Seoul, 143-747, Korea ([email protected]) Received / Accepted Abstract. As part of an effort to enlarge the number of well-studied Magellanic-type galaxies, we obtained broadband op- tical imaging and neutral hydrogen radio synthesis observations of the dwarf irregular galaxy ESO 364-G029. The optical morphology characteristically shows a bar-like main body with a one-sided spiral arm, an approximately exponential light distribution, and offset photometric and kinematic centers. The H i distribution is mildly asymmetric and, although slightly offset from the photometric center, roughly follows the optical brightness distribution, extending to over 1.2 Holmberg radii −2 (where µB = 26.5 mag arcsec ). In particular, the highest H i column densities closely follow the bar, one-arm spiral, and a third optical extension. The rotation is solid-body in the inner parts but flattens outside of the optical extent. -
Abstracts Connecting to the Boston University Network
20th Cambridge Workshop: Cool Stars, Stellar Systems, and the Sun July 29 - Aug 3, 2018 Boston / Cambridge, USA Abstracts Connecting to the Boston University Network 1. Select network ”BU Guest (unencrypted)” 2. Once connected, open a web browser and try to navigate to a website. You should be redirected to https://safeconnect.bu.edu:9443 for registration. If the page does not automatically redirect, go to bu.edu to be brought to the login page. 3. Enter the login information: Guest Username: CoolStars20 Password: CoolStars20 Click to accept the conditions then log in. ii Foreword Our story starts on January 31, 1980 when a small group of about 50 astronomers came to- gether, organized by Andrea Dupree, to discuss the results from the new high-energy satel- lites IUE and Einstein. Called “Cool Stars, Stellar Systems, and the Sun,” the meeting empha- sized the solar stellar connection and focused discussion on “several topics … in which the similarity is manifest: the structures of chromospheres and coronae, stellar activity, and the phenomena of mass loss,” according to the preface of the resulting, “Special Report of the Smithsonian Astrophysical Observatory.” We could easily have chosen the same topics for this meeting. Over the summer of 1980, the group met again in Bonas, France and then back in Cambridge in 1981. Nearly 40 years on, I am comfortable saying these workshops have evolved to be the premier conference series for cool star research. Cool Stars has been held largely biennially, alternating between North America and Europe. Over that time, the field of stellar astro- physics has been upended several times, first by results from Hubble, then ROSAT, then Keck and other large aperture ground-based adaptive optics telescopes. -
The Extragalactic Distance Scale
The Extragalactic Distance Scale Published in "Stellar astrophysics for the local group" : VIII Canary Islands Winter School of Astrophysics. Edited by A. Aparicio, A. Herrero, and F. Sanchez. Cambridge ; New York : Cambridge University Press, 1998 Calibration of the Extragalactic Distance Scale By BARRY F. MADORE1, WENDY L. FREEDMAN2 1NASA/IPAC Extragalactic Database, Infrared Processing & Analysis Center, California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA 91125, USA 2Observatories, Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena CA 91101, USA The calibration and use of Cepheids as primary distance indicators is reviewed in the context of the extragalactic distance scale. Comparison is made with the independently calibrated Population II distance scale and found to be consistent at the 10% level. The combined use of ground-based facilities and the Hubble Space Telescope now allow for the application of the Cepheid Period-Luminosity relation out to distances in excess of 20 Mpc. Calibration of secondary distance indicators and the direct determination of distances to galaxies in the field as well as in the Virgo and Fornax clusters allows for multiple paths to the determination of the absolute rate of the expansion of the Universe parameterized by the Hubble constant. At this point in the reduction and analysis of Key Project galaxies H0 = 72km/ sec/Mpc ± 2 (random) ± 12 [systematic]. Table of Contents INTRODUCTION TO THE LECTURES CEPHEIDS BRIEF SUMMARY OF THE OBSERVED PROPERTIES OF CEPHEID -
CONFERENCE and REVIEW PUBLICATONS, and WHITE PAPERS: Reverse Chronological Harper, GM, 2013
CONFERENCE AND REVIEW PUBLICATONS, AND WHITE PAPERS: Reverse Chronological Harper, G. M., 2013, [Invited Review] Atmospheric structure and dynamics: the spatial and temporal domains, EAS Publications Series, Vol 60, 2013, pp.59-68 Farzone, M., Ryde, N., Harper, G. M., Lambert, J., Josselin, E., Richter, M. J., & Eriksson, K., 2013, What is the Origin of the Water Vapour Signatures in Red Giant Stars?, EAS Publications Series, Vol 60, pp.155-159 Carpenter, K. G., Ayres, T., Brown, A., Harper, G. M., & Wahlgren, G. M., 2012. The Amazing COS FUV (1320 - 1460A)˚ Spectrum of λ Vel (K4Ib-II), 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun. Eds. C. M. Johns-Krull, M. K. Browning, and A. A. West. San Francisco: ASP Conf Ser., Vol. 448, p.1083 Harper, G. M., Brown, A., & Redfield, S., 2012, Constraints on the Surface Magnetic Field Structure of Aldebaran (αTauri, K5 III), 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun. Eds. C. M. Johns-Krull, M. K. Browning, and A. A. West. San Francisco: ASP Conf Ser., Vol. 448, p.1145 O’Gorman, E. & Harper, G. M., 2012, What is Heating Arcturus’ Wind?, 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun. Eds. C. M. Johns-Krull, M. K. Browning, and A. A. West. San Francisco: ASP Conf Ser., Vol. 448, p.691 van Belle, G. T., Aufdenberg, J., Boyajian, T., Harper G. M., Hummel, C., Pedretti, E., Baines, E., White, R., Ravi, V., & Ridgway, S., 2012, Fundamental Stellar Properties from Optical Interferometry, 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun. -
Information Bulletin on Variable Stars
COMMISSIONS AND OF THE I A U INFORMATION BULLETIN ON VARIABLE STARS Nos November July EDITORS L SZABADOS K OLAH TECHNICAL EDITOR A HOLL TYPESETTING K ORI ADMINISTRATION Zs KOVARI EDITORIAL BOARD L A BALONA M BREGER E BUDDING M deGROOT E GUINAN D S HALL P HARMANEC M JERZYKIEWICZ K C LEUNG M RODONO N N SAMUS J SMAK C STERKEN Chair H BUDAPEST XI I Box HUNGARY URL httpwwwkonkolyhuIBVSIBVShtml HU ISSN COPYRIGHT NOTICE IBVS is published on b ehalf of the th and nd Commissions of the IAU by the Konkoly Observatory Budap est Hungary Individual issues could b e downloaded for scientic and educational purp oses free of charge Bibliographic information of the recent issues could b e entered to indexing sys tems No IBVS issues may b e stored in a public retrieval system in any form or by any means electronic or otherwise without the prior written p ermission of the publishers Prior written p ermission of the publishers is required for entering IBVS issues to an electronic indexing or bibliographic system to o CONTENTS C STERKEN A JONES B VOS I ZEGELAAR AM van GENDEREN M de GROOT On the Cyclicity of the S Dor Phases in AG Carinae ::::::::::::::::::::::::::::::::::::::::::::::::::: : J BOROVICKA L SAROUNOVA The Period and Lightcurve of NSV ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::: W LILLER AF JONES A New Very Long Period Variable Star in Norma ::::::::::::::::::::::::::::::::::::::::::::::::::: :::::::::::::::: EA KARITSKAYA VP GORANSKIJ Unusual Fading of V Cygni Cyg X in Early November ::::::::::::::::::::::::::::::::::::::: -
Publication List for Amaury H.M.J. Triaud Most Important Publications
1 Publication List for Amaury H.M.J. Triaud Listing following SAO/NASA’s ADS paper archive. There are active links to the ADS paper archive in blue. All refereed publication can be accessed by clicking here and all publications, in- cluding conference proceedings, white papers and some proposal abstracts by clicking here. LAST UPDATED ON 2015-07-16: 101 refereed publications, above 2700 citations. H-index = 30. In addition: 4 are submitted or in press, 16 are conference proceedings or white papers. Most important publications WASP-80B HAS A DAYSIDE WITHIN THE T-DWARF RANGE Triaud, Amaury H. M. J., Gillon, Michaël, Ehrenreich, David, Herrero, Enrique, Lendl, Monika, Anderson, David R., Collier Cameron, Andrew, Delrez, Laetitia, Demory, Brice-Olivier, Hellier, Coel, Heng, Kevin, Jehin, Emmanuel, Maxted, Pierre F. L., Pollacco, Don, Queloz, Didier, Ribas, Ignasi, Smalley, Barry, Smith, Alexis M. S., Udry, Stéphane 2015 MNRAS 450 2279 CIRCUMBINARY PLANETS - WHY THEY ARE SO LIKELY TO TRANSIT Martin, D. V. & Triaud, A. H. M. J. 2015 MNRAS 449, 781 PLANETS TRANSITING NON-ECLIPSING BINARIES Martin, D. V. & Triaud, A. H. M. J. 2014 A&A 570, 91 COLOUR-MAGNITUDE DIAGRAMS OF TRANSITING EXOPLANETS I-SYSTEMS WITH PARALLAXES Triaud, A. H. M. J. 2014 MNRAS 439, L61 FAST-EVOLVING WEATHER FOR THE COOLEST OF OUR TWO NEW SUBSTELLAR NEIGHBOURS Gillon, M., Triaud, A. H. M. J., Jehin, E., Delrez, L., Opitom, C., Magain, P., Lendl, M., Queloz, D. 2013 A&A 555, L5 A SEARCH FOR ROCKY PLANETS TRANSITING BROWN DWARFS Triaud, Amaury H. M. J., Gillon, Michael, Selsis, Franck, Winn, Joshua N., Demory, Brice-Olivier, Artigau, Etienne, Laughlin, Gregory P., Seager, Sara, Helling, Christiane, Mayor, Michel, Albert, Loic, Anderson, Richard I., Bolmont, Emeline, Doyon, Rene, Forveille, Thierry, Hagelberg, Janis, Leconte, Jeremy, Lendl, Monika, Littlefair, Stuart, Raymond, Sean, Sahlmann, Johannes (arXiv:1304.7248) WASP-80B: A GAS GIANT TRANSITING A COOL DWARF Triaud, A. -
Keck Spectra of Brown Dwarf Candidates and a Precise
TABLE 1 Summary of Optical Imaging for Alpha Persei Telescope Area Covered Limiting Magnitude (sq.degrees) (R/I) CWRU Schmidt 3.2 21.5/20.5 MHO 1.2m 1.1 22.0/20.7 KPNO 0.9m 0.5 21.5/20.5 KPNO 4.0m 1.3 22.4/21.0 KPNO 4.0m a (2.5) ≈ 24/≈ 23 aBouvier et al. (1999) TABLE 2 Photometry of Alpha Persei Stars Star α(J2000) δ(J2000) Ic R − Ic K Ic − K AP300 3 17 27.6 49 36 53.0 17.85 2.18 14.62 3.23 AP301 3 18 09.2 49 25 19.0 17.75 2.22 14.14 3.61 AP302 3 19 08.4 48 43 48.5 17.63 2.08 ······ AP303 3 19 10.9 48 42 20.0 16.98 1.88 ······ AP304 3 19 13.2 48 31 55.0 18.83 2.40 ······ AP305 3 19 21.7 49 23 32.0 18.48 2.34 ······ AP306 3 19 41.8 50 30 42.0 18.40 2.34 14.9 3.5 AP307 3 20 20.9 48 01 05.0 17.08 2.01 ······ AP308 3 20 59.7 48 18 37.0 16.71 1.89 ······ AP309 3 22 40.6 48 00 36.0 16.57 1.88 ······ AP275 a 3 23 03.3 48 53 07.0 17.25 2.20 ······ AP310 3 23 04.7 48 16 13.0 17.80 2.33 14.55 3.25 AP311 3 23 08.4 48 04 52.5 17.70 2.12 14.30 3.40 AP312 3 23 14.8 48 11 56.0 18.60 2.41 15.21 3.39 AP313 3 24 08.1 48 48 30.0 17.55 2.13 ······ AP314 3 25 19.6 49 17 58.0 18.20 2.26 15.15 3.05 AP315 3 26 34.5 49 07 46.0 18.20 2.34 14.80 3.40 arXiv:astro-ph/9909207v2 15 Sep 1999 AP316 3 27 01.3 49 14 40.0 17.75 2.18 14.48 3.27 AP317 3 28 06.0 48 45 13.5 17.85 2.29 15.0 2.85 AP318 3 30 42.5 48 21 27.0 17.45 2.16 14.10 3.35 AP319 3 31 03.2 49 02 58.0 16.89 1.95 ······ AP320 3 31 25.3 49 02 52.0 16.79 1.90 ······ AP321 3 32 18.7 49 32 18.0 17.75 2.20 ······ AP322 3 33 08.3 49 37 56.5 17.60 2.14 14.57 3.03 AP323 3 33 20.7 48 45 51.0 17.50 2.13 14.33 3.17 AP324 3 33 48.2 48 52 30.5 18.10 2.36 14.68 3.42 AP325 3 35 47.2 49 17 43.0 17.65 2.30 14.14 3.51 AP326 3 38 55.2 48 57 31.0 18.70 2.40 15.09 3.61 aAP275 is from Prosser (1994). -
2012 Annual Progress Report and 2013 Program Plan of the Gemini Observatory
2012 Annual Progress Report and 2013 Program Plan of the Gemini Observatory Association of Universities for Research in Astronomy, Inc. Table of Contents 0 Executive Summary ....................................................................................... 1 1 Introduction and Overview .............................................................................. 5 2 Science Highlights ........................................................................................... 6 2.1 Highest Resolution Optical Images of Pluto from the Ground ...................... 6 2.2 Dynamical Measurements of Extremely Massive Black Holes ...................... 6 2.3 The Best Standard Candle for Cosmology ...................................................... 7 2.4 Beginning to Solve the Cooling Flow Problem ............................................... 8 2.5 A Disappearing Dusty Disk .............................................................................. 9 2.6 Gas Morphology and Kinematics of Sub-Millimeter Galaxies........................ 9 2.7 No Intermediate-Mass Black Hole at the Center of M71 ............................... 10 3 Operations ...................................................................................................... 11 3.1 Gemini Publications and User Relationships ............................................... 11 3.2 Science Operations ........................................................................................ 12 3.2.1 ITAC Software and Queue Filling Results ..................................................