Time Telling Through the Ages and His Companions Would Advance Upon the Enemy's Trenches—Perhaps Also Upon Eternity
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Luminous Blue Variables
Review Luminous Blue Variables Kerstin Weis 1* and Dominik J. Bomans 1,2,3 1 Astronomical Institute, Faculty for Physics and Astronomy, Ruhr University Bochum, 44801 Bochum, Germany 2 Department Plasmas with Complex Interactions, Ruhr University Bochum, 44801 Bochum, Germany 3 Ruhr Astroparticle and Plasma Physics (RAPP) Center, 44801 Bochum, Germany Received: 29 October 2019; Accepted: 18 February 2020; Published: 29 February 2020 Abstract: Luminous Blue Variables are massive evolved stars, here we introduce this outstanding class of objects. Described are the specific characteristics, the evolutionary state and what they are connected to other phases and types of massive stars. Our current knowledge of LBVs is limited by the fact that in comparison to other stellar classes and phases only a few “true” LBVs are known. This results from the lack of a unique, fast and always reliable identification scheme for LBVs. It literally takes time to get a true classification of a LBV. In addition the short duration of the LBV phase makes it even harder to catch and identify a star as LBV. We summarize here what is known so far, give an overview of the LBV population and the list of LBV host galaxies. LBV are clearly an important and still not fully understood phase in the live of (very) massive stars, especially due to the large and time variable mass loss during the LBV phase. We like to emphasize again the problem how to clearly identify LBV and that there are more than just one type of LBVs: The giant eruption LBVs or h Car analogs and the S Dor cycle LBVs. -
C9 Collection
C9 COLLECTION O W N E R ’ S H A N D B O O K TIME ON YOUR SIDE... Your Christopher Ward watch has been designed and engineered by highly talented craftspeople to ensure not only accurate and precise timekeeping but also to bring a real pride of ownership that only luxury items of the highest quality can ever hope to deliver. You have made an investment, a good one, and the aim of this handbook is to help you make the most of that investment during what I hope will be a lifetime of ownership. Christopher Ward 1 JOHN HARRISON WATCHMAKER John Harrison was born in 1693 in Foulby, West Yorkshire and lived for most of his life in Barrow upon Humber. He became a carpenter, like his father, was a gifted musician and a self-taught watchmaker, creating his first timepieces entirely out of wood. He moved to London in the 1750s, at the height of his development of his “sea watches” and died in the capital in 1776. The ship’s chronometers were rediscovered at the Royal Greenwich Observatory in the mid-20th century and restored. Today the H1, H2, H3 and H4 are on display at the National Maritime Museum in Greenwich. The H5 is owned by the Worshipful Company of Clockmakers, and is displayed in the Clockmaker’s Museum in London’s Guildhall. 2 THE LONGITUDE SOLUTION In 1760 horologist John Harrison took his 1735 invention of the Marine Chronometer to a higher level by making it portable in the form of a pocket watch - his H4 was effectively the first precision watch and the true ancester of the Christopher Ward collection. -
Luminous Blue Variables: an Imaging Perspective on Their Binarity and Near Environment?,??
A&A 587, A115 (2016) Astronomy DOI: 10.1051/0004-6361/201526578 & c ESO 2016 Astrophysics Luminous blue variables: An imaging perspective on their binarity and near environment?;?? Christophe Martayan1, Alex Lobel2, Dietrich Baade3, Andrea Mehner1, Thomas Rivinius1, Henri M. J. Boffin1, Julien Girard1, Dimitri Mawet4, Guillaume Montagnier5, Ronny Blomme2, Pierre Kervella7;6, Hugues Sana8, Stanislav Štefl???;9, Juan Zorec10, Sylvestre Lacour6, Jean-Baptiste Le Bouquin11, Fabrice Martins12, Antoine Mérand1, Fabien Patru11, Fernando Selman1, and Yves Frémat2 1 European Organisation for Astronomical Research in the Southern Hemisphere, Alonso de Córdova 3107, Vitacura, 19001 Casilla, Santiago de Chile, Chile e-mail: [email protected] 2 Royal Observatory of Belgium, 3 avenue Circulaire, 1180 Brussels, Belgium 3 European Organisation for Astronomical Research in the Southern Hemisphere, Karl-Schwarzschild-Str. 2, 85748 Garching b. München, Germany 4 Department of Astronomy, California Institute of Technology, 1200 E. California Blvd, MC 249-17, Pasadena, CA 91125, USA 5 Observatoire de Haute-Provence, CNRS/OAMP, 04870 Saint-Michel-l’Observatoire, France 6 LESIA (UMR 8109), Observatoire de Paris, PSL, CNRS, UPMC, Univ. Paris-Diderot, 5 place Jules Janssen, 92195 Meudon, France 7 Unidad Mixta Internacional Franco-Chilena de Astronomía (CNRS UMI 3386), Departamento de Astronomía, Universidad de Chile, Camino El Observatorio 1515, Las Condes, Santiago, Chile 8 ESA/Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, -
L33 WR 20A IS an ECLIPSING BINARY
The Astrophysical Journal, 611:L33–L36, 2004 August 10 ൴ ᭧ 2004. The American Astronomical Society. All rights reserved. Printed in U.S.A. WR 20a IS AN ECLIPSING BINARY: ACCURATE DETERMINATION OF PARAMETERS FOR AN EXTREMELY MASSIVE WOLF-RAYET SYSTEM1 A. Z. Bonanos and K. Z. Stanek Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138; [email protected], [email protected] and A. Udalski, L. Wyrzykowski,2 K. Z˙ ebrun´ , M. Kubiak, M. K. Szyman´ ski, O. Szewczyk, G. Pietrzyn´ ski,3 and I. Soszyn´ ski Warsaw University Observatory, Al. Ujazdowskie 4, PL-00-478 Warsaw, Poland; [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected] Received 2004 May 18; accepted 2004 June 24; published 2004 July 8 ABSTRACT We present a high-precision I-band light curve for the Wolf-Rayet binary WR 20a, obtained as a subproject of the Optical Gravitational Lensing Experiment. Rauw et al. have recently presented spectroscopy for this system, M, for the component stars 3.8 ע and 68.8 4.0 ע strongly suggesting extremely large minimum masses of70.7 of the system, with the exact values depending strongly on the period of the system. We detect deep eclipses of about 0.4 mag in the light curve of WR 20a, confirming and refining the suspected period ofP p 3.686 days and 2Њ.0 . Using these photometric data and the radial velocity data of Rauw ע deriving an inclination angle ofi p 74Њ.5 ,M, . -
Colgate & Company Jersey City Plant: Office Building
COLGATE & COMPANY JERSEY CITY PLANT: OFFICE BUILDING HAER No. NJ-71-A ^GeJrgaLc-rj.lmolivc Company Jersey City Planter- —Q&Qec. Building) 105 Hudson Street Jersey City HAE1R Hudson County KIT New Jersey ' PHOTOGRAPHS WRITTEN HISTORICAL AND DESCRIPTIVE DATA HISTORIC AMERICAN ENGINEERING RECORD Northeast Area Office National Park Service U.S. Custom House 200 Chestnut Street Philadelphia, PA 19106 H/JER. HISTORIC AMERICAN ENGINEERING RECORD COLGATE & COMPANY JERSEY CITY PLANT: OFFICE BUILDING (Colgate-Palmolive Company Jersey City Plant: Office Building) HAER No. NJ-71-A Location: 105 Hudson Street, Jersey City, New Jersey USGS Quadrangle: Jersey City, New Jersey - New York UTM Coordinates: 18.581490.4507490 Present Owner/Occupant: Colgate-Palmolive Company 300 Park Avenue New York, New York 10022 Present Use: Demolished 1988. Significance: The ten-story office building at 105 Hudson Street served as the corporate headquarters of Colgate & Company from 1910 to 1930, and of Colgate-Palmolive- Peet from 1933 to 1956. Located in the Exchange Place area of Jersey City, the structure was immedi- ately north of the company's large Jersey City manu- facturing plant, managed from the office building before and after the corporate headquarters moved to Manhattan in 1956. The steel-framed, masonry- clad building is characteristic of early 20th century institutional design which utilized classical fea- tures, and is one of several such structures built in the Exchange Place area at this time. Most classi- cized features on the original eight story building were confined to exterior masonry, and some vestibule and lobby features. When recorded in 1987, the exte- rior survived intact, with the addition of two sto- ries built 1933-34. -
Kintaro Hattori in 1881 Founded the Company That Was to Become Seiko
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½PPEZSMHMRXLI)RKPMWLPERKYEKIPMXIVEXYVIEFSYXXLITEWXTVIWIRXERHJYXYVI SJXLIGSQTER]8LIEYXLSV .SLR+SSHEPPMWENSYVREPMWX[LSLEWWTIRXQSWXSJLMW[SVOMRK PMJI[VMXMRKEFSYX[EXGLIWERHXLI[EXGLQEVOIX¯JSVRIEVP]]IEVWEWXLIIHMXSVSJXLI PIEHMRK&VMXMWLXVEHIRI[WTETIV[LMGL[EWXLIRGEPPIH6IXEMP.I[IPPIVERHWYFWIUYIRXP]EW XLIIHMXSVSJE[EXGLQEKE^MRIJSVIRXLYWMEWXW*SVXLIPEWX]IEVWLILEWFIIREJVIIPERGI NSYVREPMWX[VMXMRKEFSYX[EXGLIWJSVLMKLUYEPMX]QEKE^MRIWERHREXMSREPRI[WTETIVW,MW EVXMGPIWLEZIFIIRTYFPMWLIHMRXLI97%-XEP]+IVQER]*VERGIXLI9/ERH.ETER '328)287 'LETXIV ,YQFPI&IKMRRMRKW'VIEXIE7SYRH*SYRHEXMSR 8LIIEVP]7IMOSWXSV] 'LETXIV -RRSZEXMSRERH6IßRIQIRX %RI[HMVIGXMSRJSVXLIWXGIRXYV] 'LETXIV 8LI(IZIPSTQIRX=IEVW 8LIIEVP]LMWXSV]¯ 'LETXIV 'SQTIXMXMSRW7TYVVIH7IMOSXS2I[,IMKLXW -RXIVREXMSREPVIGSKRMXMSR 'LETXIV 8LI4MRREGPISJ1IGLERMGEP)\GIPPIRGI 8LIWXSV]SJXLI+VERH7IMOSGSPPIGXMSR 'LETXIV 8LI(E]XLEX'LERKIHXLI,MWXSV]SJ8MQI 8LIEHZIRXSJUYEVX^XIGLRSPSK] 'LETXIV /MRIXMG;EXGLIW®%PP 8LEXMW&IWXMR7IMOS8IGLRSPSK] 8LIGLEPPIRKISJGPIERIRIVK] 'LETXIV 8LI²+VEQQEVSJ(IWMKR³ -
Massive Stars in the Galactic Center Quintuplet Cluster
Institut für Physik und Astronomie Astrophysik Massive stars in the Galactic Center Quintuplet cluster Dissertation zur Erlangung des akademischen Grades Doktor der Naturwissenschaften (Dr. rer. nat.) eingereicht an der Mathematisch-Naturwissenschaftlichen Fakultät der Universität Potsdam von Adriane Liermann Potsdam, Juni 2009 This work is licensed under a Creative Commons License: Attribution - Noncommercial - No Derivative Works 3.0 Germany To view a copy of this license visit http://creativecommons.org/licenses/by-nc-nd/3.0/de/deed.en Published online at the Institutional Repository of the University of Potsdam: URL http://opus.kobv.de/ubp/volltexte/2009/3722/ URN urn:nbn:de:kobv:517-opus-37223 [http://nbn-resolving.org/urn:nbn:de:kobv:517-opus-37223] Summary The presented thesis describes the observations of the Galactic center Quintuplet cluster, the spectral analysis of the cluster Wolf-Rayet stars of the nitrogen sequence to determine their fundamental stellar parameters, and discusses the obtained results in a general context. The Quintuplet cluster was discovered in one of the first infrared surveys of the Galactic center region (Okuda et al. 1987, 1989) and was observed for this project with the ESO-VLT near-infrared integral field instrument SINFONI-SPIFFI. The subsequent data reduction was performed in parts with a self-written pipeline to obtain flux-calibrated spectra of all objects detected in the imaged field of view. First results of the observation were compiled and published in a spectral catalog of 160 flux-calibrated K-band spectra in the range of 1.95 to 2.45 µm, containing 85 early-type (OB) stars, 62 late-type (KM) stars, and 13 Wolf-Rayet stars. -
Time and Frequency Users' Manual
,>'.)*• r>rJfl HKra mitt* >\ « i If I * I IT I . Ip I * .aference nbs Publi- cations / % ^m \ NBS TECHNICAL NOTE 695 U.S. DEPARTMENT OF COMMERCE/National Bureau of Standards Time and Frequency Users' Manual 100 .U5753 No. 695 1977 NATIONAL BUREAU OF STANDARDS 1 The National Bureau of Standards was established by an act of Congress March 3, 1901. The Bureau's overall goal is to strengthen and advance the Nation's science and technology and facilitate their effective application for public benefit To this end, the Bureau conducts research and provides: (1) a basis for the Nation's physical measurement system, (2) scientific and technological services for industry and government, a technical (3) basis for equity in trade, and (4) technical services to pro- mote public safety. The Bureau consists of the Institute for Basic Standards, the Institute for Materials Research the Institute for Applied Technology, the Institute for Computer Sciences and Technology, the Office for Information Programs, and the Office of Experimental Technology Incentives Program. THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consist- ent system of physical measurement; coordinates that system with measurement systems of other nations; and furnishes essen- tial services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce. The Institute consists of the Office of Measurement Services, and the following center and divisions: Applied Mathematics -
A COMPREHENSIVE STUDY of SUPERNOVAE MODELING By
A COMPREHENSIVE STUDY OF SUPERNOVAE MODELING by Chengdong Li BS, University of Science and Technology of China, 2006 MS, University of Pittsburgh, 2007 Submitted to the Graduate Faculty of the Dietrich School of Arts and Sciences in partial fulfillment of the requirements for the degree of Doctor of Philosophy University of Pittsburgh 2013 UNIVERSITY OF PITTSBURGH PHYSICS AND ASTRONOMY DEPARTMENT This dissertation was presented by Chengdong Li It was defended on January 22nd 2013 and approved by John Hillier, Professor, Department of Physics and Astronomy Rupert Croft, Associate Professor, Department of Physics Steven Dytman, Professor, Department of Physics and Astronomy Michael Wood-Vasey, Assistant Professor, Department of Physics and Astronomy Andrew Zentner, Associate Professor, Department of Physics and Astronomy Dissertation Director: John Hillier, Professor, Department of Physics and Astronomy ii Copyright ⃝c by Chengdong Li 2013 iii A COMPREHENSIVE STUDY OF SUPERNOVAE MODELING Chengdong Li, PhD University of Pittsburgh, 2013 The evolution of massive stars, as well as their endpoints as supernovae (SNe), is important both in astrophysics and cosmology. While tremendous progress towards an understanding of SNe has been made, there are still many unanswered questions. The goal of this thesis is to study the evolution of massive stars, both before and after explosion. In the case of SNe, we synthesize supernova light curves and spectra by relaxing two assumptions made in previous investigations with the the radiative transfer code cmfgen, and explore the effects of these two assumptions. Previous studies with cmfgen assumed γ-rays from radioactive decay deposit all energy into heating. However, some of the energy excites and ionizes the medium. -
Luminous Blue Variables: an Imaging Perspective on Their Binarity and Near Environment
Astronomy & Astrophysics manuscript no. article12LBVn5 c ESO 2016 January 15, 2016 Luminous blue variables: An imaging perspective on their binarity and near environment? Christophe Martayan1, Alex Lobel2, Dietrich Baade3, Andrea Mehner1, Thomas Rivinius1, Henri M. J. Boffin1, Julien Girard1, Dimitri Mawet4, Guillaume Montagnier5, Ronny Blomme2, Pierre Kervella6; 7, Hugues Sana8, Stanislav Štefl??9, Juan Zorec10, Sylvestre Lacour6, Jean-Baptiste Le Bouquin11, Fabrice Martins12, Antoine Mérand1, Fabien Patru11, Fernando Selman1, and Yves Frémat2 1 European Organisation for Astronomical Research in the Southern Hemisphere, Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile e-mail: [email protected] 2 Royal Observatory of Belgium, 3 Avenue Circulaire, 1180 Brussels, Belgium 3 European Organisation for Astronomical Research in the Southern Hemisphere, Karl-Schwarzschild-Str. 2, 85748 Garching b. München, Germany 4 Department of Astronomy, California Institute of Technology, 1200 E. California Blvd, MC 249-17, Pasadena, CA 91125 USA 5 Observatoire de Haute-Provence, CNRS/OAMP, 04870 Saint-Michel-l’Observatoire, France 6 LESIA, UMR 8109, Observatoire de Paris, CNRS, UPMC, Univ. Paris-Diderot, PSL, 5 place Jules Janssen, 92195 Meudon, France 7 Unidad Mixta Internacional Franco-Chilena de Astronomía (UMI 3386), CNRS/INSU, France & Departamento de Astronomía, Universidad de Chile, Camino El Observatorio 1515, Las Condes, Santiago, Chile 8 ESA / Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD -
Department of Military and Veterans' Affairs
ANALYSIS OF THE NEW JERSEY BUDGET DEPARTMENT OF MILITARY AND VETERANS’ AFFAIRS FISCAL YEAR 2016- 2017 PREPARED BY OFFICE OF LEGISLATIVE SERVICES NEW JERSEY LEGISLATURE • APRIL 2016 NEW JERSEY STATE LEGISLATURE SENATE BUDGET AND APPROPRIATIONS COMMITTEE Paul A. Sarlo (D), 36th District (Parts of Bergen and Passaic), Chair Brian P. Stack (D), 33rd District (Part of Hudson), Vice-Chair Peter J. Barnes III (D), 18th District (Part of Middlesex) Jennifer Beck (R), 11th District (Part of Monmouth) Anthony R. Bucco (R), 25th District (Parts of Morris and Somerset) Sandra B. Cunningham (D), 31st District (Part of Hudson) Linda R. Greenstein (D), 14th District (Parts of Mercer and Middlesex) Steven V. Oroho (R), 24th District (All of Sussex, and parts of Morris and Warren) Kevin J. O'Toole (R), 40th District (Parts of Bergen, Essex, Morris and Passaic) Nellie Pou (D), 35th District (Parts of Bergen and Passaic) M. Teresa Ruiz (D), 29th District (Part of Essex) Samuel D. Thompson (R), 12th District (Parts of Burlington, Middlesex, Monmouth and Ocean) Jeff Van Drew (D), 1st District (All of Cape May, and parts of Atlantic and Cumberland) GENERAL ASSEMBLY BUDGET COMMITTEE Gary S. Schaer (D), 36th District (Parts of Bergen and Passaic), Chair John J. Burzichelli (D), 3rd District (All of Salem, parts of Cumberland and Gloucester), Vice-Chair Anthony M. Bucco (R), 25th District (Parts of Morris and Somerset) John DiMaio (R), 23rd District (Parts of Hunterdon, Somerset and Warren) Gordon M. Johnson (D), 37th District (Part of Bergen) John F. McKeon (D), 27th District (Parts of Essex and Morris) Raj Mukherji (D), 33rd District (Part of Hudson) Elizabeth Maher Muoio (D), 15th District (Parts of Hunterdon and Mercer) Declan J. -
Try Pulses by the Minute in Common Watches
News, Notes and Queries THE PHYSICIAN'S PULSE WATCH SIR JOHN FLOYER (1649-1734) may justifiably be credited with the invention of the first efficient instrument of precision to merit application in clinical practice. His own account of the development of a pulse watch for the accurate measurement of pulse rates in his patients has often been quoted,'7 and the instrument is known to have been commercially available in 1707.8 But Gunn,3 writing in 1934 thought that no specimen had survived, and no example of such a pulse watch constructed in the last years of the seventeenth century has previously been illustrated in medical writings on the subject. In opening his preface to the first volume of The Physician's Pulse Watch, published in 1707, Floyer described the evolution of the instrument: I have for many years tried pulses by the minute in common watches and pendulum clocks, when I was among my patients. After some time I met with the common sea minute-glass, which I used for my cold bathing, and by that I made most of my experiments. But because that was not portable, I caused a pulse watch to be made which run 60 seconds, and I placed it in a box to be more carefully carried, and by this I now feel pulses. And since the watch does run unequally, rather too fast for my minute-glass, I thereby regulate it, and add 5 or 6 to the numbers told by the watch. I also made a half minute-glass, whose case turns like a dark lanthom and that was portable and useful in feeling of my patients' pulses, but that differed 4 beats from the minute glass, which I kept at home as my standard.