Donald E. Osterbrock Papers
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INFORMATION BULLETIN NOVEMBER 2005 97 Special Issue Special INTERNATIONAL ASTRONOMICAL UNION IAU Executive Committee
INFORMATION BULLETIN NOVEMBER 2005 INTERNATIONAL ASTRONOMICAL UNION Special Issue 97 IAU Executive Committee PRESIDENT VICE-PRESIDENTS Robert E. Williams Ronald D. Ekers Beatriz Barbuy STScI CSIRO / ATNF IAG 3700 San Martin Dr PO Box 76 University of São Paulo US - Baltimore MD 21218 AU - Epping NSW 1710 Rua do Matao 1226 USA Australia Cidade Universitaria Tel: +1 410 338 4963 Tel: +61 2 9372 4600 BR - São Paulo SP 05508 900 Fax: +1 410 338 2617 Fax: +61 2 9372 4450 Brazil [email protected] [email protected] Tel: +55 11 3091 2810 Fax: +55 11 3091 2860 ADVISERS PRESIDENT-ELECT [email protected] Franco Pacini Catherine Cesarsky Cheng Fang (Outgoing President) Director General Astronomy Dept Dpt di Astronomia ESO Nanjing University Università Degli Studi Karl Schwarzschildstr 2 Hankou Rd 22 Largo E. Fermi 5 DE - 85748 Garching CN - Nanjing, Jiangsu 210093 IT - 50125 Firenze Germany China PR Italy Tel: +49 893 200 6227 Tel: +86 258 359 6817 Tel: +39 055 275 21/2232 Fax: +49 893 202 362 Fax: +86 258 359 6817 Fax: +39 055 220 039 [email protected] [email protected] [email protected] Kenneth A. Pounds Hans Rickman GENERAL SECRETARY Dept Physics & Astronomy (Outgoing General Oddbjørn Engvold University of Leicester Secretary) IAU University Rd Astronomical Observatory 98 bis, bd Arago GB - Leicester LE1 7RH Uppsala University FR - 75014 Paris United Kingdom P.O. Box 515 France Tel: +44 116 252 3509 SE - 751 20 Uppsala Tel: +33 1 43 25 83 58 Fax: +44 116 252 3311 Sweden Fax: +33 1 43 25 26 16 [email protected] Tel: +46 18 471 5971 [email protected] Fax: +46 18 471 5999 Silvia Torres-Peimbert [email protected] Home Institute Instituto de Astronomía Inst.Theoretical Astrophysics UNAM P.O. -
The Comet's Tale, and Therefore the Object As a Whole Would the Section Director Nick James Highlighted Have a Low Surface Brightness
1 Diebold Schilling, Disaster in connection with two comets sighted in 1456, Lucerne Chronicle, 1513 (Wikimedia Commons) THE COMET’S TALE Comet Section – British Astronomical Association Journal – Number 38 2019 June britastro.org/comet Evolution of the comet C/2016 R2 (PANSTARRS) along a total of ten days on January 2018. Composition of pictures taken with a zoom lens from Teide Observatory in Canary Islands. J.J Chambó Bris 2 Table of Contents Contents Author Page 1 Director’s Welcome Nick James 3 Section Director 2 Melvyn Taylor’s Alex Pratt 6 Observations of Comet C/1995 01 (Hale-Bopp) 3 The Enigma of Neil Norman 9 Comet Encke 4 Setting up the David Swan 14 C*Hyperstar for Imaging Comets 5 Comet Software Owen Brazell 19 6 Pro-Am José Joaquín Chambó Bris 25 Astrophotography of Comets 7 Elizabeth Roemer: A Denis Buczynski 28 Consummate Comet Section Secretary Observer 8 Historical Cometary Amar A Sharma 37 Observations in India: Part 2 – Mughal Empire 16th and 17th Century 9 Dr Reginald Denis Buczynski 42 Waterfield and His Section Secretary Medals 10 Contacts 45 Picture Gallery Please note that copyright 46 of all images belongs with the Observer 3 1 From the Director – Nick James I hope you enjoy reading this issue of the We have had a couple of relatively bright Comet’s Tale. Many thanks to Janice but diffuse comets through the winter and McClean for editing this issue and to Denis there are plenty of images of Buczynski for soliciting contributions. 46P/Wirtanen and C/2018 Y1 (Iwamoto) Thanks also to the section committee for in our archive. -
Messenger Extreme Exploration
MESSENGERMESSENGER EEXTREMEXTREME EEXPLORATIONXPLORATION — Deborah Domingue, MESSENGER Deputy Project Scientist, Johns Hopkins University Applied Physics Laboratory The first half of 2004 has been an exciting time for planetary exploration with the successful encounter and sampling of Comet Wild 2 by Stardust, the landing of two Mars rovers, orbital operations at Mars by three spacecraft, and the arrival of Cassini at Saturn. This month we wished “Bon Voyage” to the MESSENGER spacecraft, which successfully launched from Cape Canaveral on August 3, 2004, and began its journey to the innermost planet of our solar system, Mercury. MESSENGER is a MEcury Surface, Space ENvironment, GEochemistry, and Ranging mission that will orbit Mercury for one Earth year (beginning in March 2011) following three flybys (in January and Septem- ber 2008 and October 2009) of the planet. It will be our first return to Mercury in over 30 years! The Mariner 10 spacecraft flew past Mer- cury three times in 1974 and 1975 and collected information on less than half the planet. MESSENGER will provide the first global map of Mercury, in addition to detailed information on the composition and structure of Mercury’s crust, its geologic history, the nature of Mercury’s thin exosphere and dynamic magnetosphere, and the makeup of its core and polar materials. MERCURY:A PLACE OF EXTREMES Mercury, the planet closest to the Sun, has a highly elliptical orbit such that its distance from the Sun ranges from 46 million kilometers (29 million miles) to 70 million kilometers (43 million miles). Because of its slow rotation, Mercury’s day (sunrise to sunrise) actually lasts two Mercury years (88 Earth days of dark and 88 Earth days of daylight). -
Primack-Phys205-Feb2
Physics 205 6 February 2017 Comparing Observed Galaxies with Simulations Joel R. Primack UCSC Hubble Space Telescope Ultra Deep Field - ACS This picture is beautiful but misleading, since it only shows about 0.5% of the cosmic density. The other 99.5% of the universe is invisible. Matter and Energy Content of the Universe Imagine that the entire universe is an ocean of dark energy. On that ocean sail billions of ghostly ships made of dark matter... Matter and Energy Content of the Dark Universe Matter Ships on a ΛCDM Dark Double Energy Dark Ocean Imagine that the entire universe is an ocean of dark Theory energy. On that ocean sail billions of ghostly ships made of dark matter... Matter Distribution Agrees with Double Dark Theory! Planck Collaboration: Cosmological parameters PlanckPlanck Collaboration: Collaboration: The ThePlanckPlanckmissionmission Planck Collaboration: The Planck mission 6000 6000 Angular scale 5000 90◦ 500018◦ 1◦ 0.2◦ 0.1◦ 0.07◦ Planck Collaboration: The Planck mission European 6000 ] 4000 2 ] 4000 2 K Double K µ [ µ 3000 [ 3000Dark TT Space TT 5000 D D 2000 2000Theory Agency 1000 1000 ] 4000 2 Cosmic 0 K 0 PLANCK 600 Variance600 60 µ 60 [ 3000 300300 30 TT 30 TT 0 0 Satellite D 0 0 D ∆ D Fig. 7. Maximum posterior CMB intensity map at 50 resolution derived from the joint baseline-30 analysis of Planck, WMAP, and ∆ -300 -300 408 MHz observations. A small strip of the Galactic plane, 1.6 % of the sky, is filled in by-30 a constrained realization that has the same statistical properties as the rest of the sky. -
Download the AAS 2011 Annual Report
2011 ANNUAL REPORT AMERICAN ASTRONOMICAL SOCIETY aas mission and vision statement The mission of the American Astronomical Society is to enhance and share humanity’s scientific understanding of the universe. 1. The Society, through its publications, disseminates and archives the results of astronomical research. The Society also communicates and explains our understanding of the universe to the public. 2. The Society facilitates and strengthens the interactions among members through professional meetings and other means. The Society supports member divisions representing specialized research and astronomical interests. 3. The Society represents the goals of its community of members to the nation and the world. The Society also works with other scientific and educational societies to promote the advancement of science. 4. The Society, through its members, trains, mentors and supports the next generation of astronomers. The Society supports and promotes increased participation of historically underrepresented groups in astronomy. A 5. The Society assists its members to develop their skills in the fields of education and public outreach at all levels. The Society promotes broad interest in astronomy, which enhances science literacy and leads many to careers in science and engineering. Adopted 7 June 2009 A S 2011 ANNUAL REPORT - CONTENTS 4 president’s message 5 executive officer’s message 6 financial report 8 press & media 9 education & outreach 10 membership 12 charitable donors 14 AAS/division meetings 15 divisions, committees & workingA groups 16 publishing 17 public policy A18 prize winners 19 member deaths 19 society highlights Established in 1899, the American Astronomical Society (AAS) is the major organization of professional astronomers in North America. -
A Brief History of Magnetospheric Physics Before the Spaceflight Era
A BRIEF HISTORY OF MAGNETOSPHERIC PHYSICS BEFORE THE SPACEFLIGHT ERA David P. Stern Laboratoryfor ExtraterrestrialPhysics NASAGoddard Space Flight Center Greenbelt,Maryland Abstract.This review traces early resea/ch on the Earth's aurora, plasma cloud particles required some way of magneticenvironment, covering the period when only penetratingthe "Chapman-Ferrarocavity": Alfv•n (1939) ground:based0bservationswerepossible. Observations of invoked an eleCtric field, but his ideas met resistance. The magneticstorms (1724) and of perturbationsassociated picture grew more complicated with observationsof with the aurora (1741) suggestedthat those phenomena comets(1943, 1951) which suggesteda fast "solarwind" originatedoutside the Earth; correlationof the solarcycle emanatingfrom the Sun's coronaat all times. This flow (1851)with magnetic activity (1852) pointed to theSun's was explainedby Parker's theory (1958), and the perma- involvement.The discovei-yof •solarflares (1859) and nent cavity which it producedaround the Earth was later growingevidence for their associationwith large storms named the "magnetosphere"(1959). As early as 1905, led Birkeland (1900) to proposesolar electronstreams as Birkeland had proposedthat the large magneticperturba- thecause. Though laboratory experiments provided some tions of the polar aurora refleCteda "polar" type of support;the idea ran into theoreticaldifficulties and was magneticstorm whose electric currents descended into the replacedby Chapmanand Ferraro's notion of solarplasma upper atmosphere;that idea, however, was resisted for clouds (1930). Magnetic storms were first attributed more than 50 years. By the time of the International (1911)to a "ringcurrent" of high-energyparticles circling GeophysicalYear (1957-1958), when the first artificial the Earth, but later work (1957) reCOgnizedthat low- satelliteswere launched, most of the importantfeatures of energy particlesundergoing guiding center drifts could the magnetospherehad been glimpsed, but detailed have the same effect. -
277 — 18 January 2016 Editor: Bo Reipurth ([email protected]) List of Contents
THE STAR FORMATION NEWSLETTER An electronic publication dedicated to early stellar/planetary evolution and molecular clouds No. 277 — 18 January 2016 Editor: Bo Reipurth ([email protected]) List of Contents The Star Formation Newsletter Interview ...................................... 3 Abstracts of Newly Accepted Papers ........... 5 Editor: Bo Reipurth [email protected] Abstracts of Newly Accepted Major Reviews . 30 Technical Editor: Eli Bressert Dissertation Abstracts ........................ 31 [email protected] New Jobs ..................................... 32 Technical Assistant: Hsi-Wei Yen Meetings ..................................... 33 [email protected] Summary of Upcoming Meetings ............. 36 Editorial Board Joao Alves Alan Boss Jerome Bouvier Cover Picture Lee Hartmann Thomas Henning The Rosette Nebula is a large HII region in Mono- Paul Ho ceros at a distance of about 1.6 - 1.7 kpc. It is Jes Jorgensen illuminated by the OB cluster NGC 2244, which Charles J. Lada contains seven O-stars, dominated by the O4V star Thijs Kouwenhoven HD 46223. The northwestern edge of the HII region Michael R. Meyer contains a large complex of globules and elephant Ralph Pudritz trunks. Luis Felipe Rodr´ıguez Ewine van Dishoeck Image courtesy Don Goldman http://astrodonimaging.com Hans Zinnecker ( ). The Star Formation Newsletter is a vehicle for fast distribution of information of interest for as- tronomers working on star and planet formation and molecular clouds. You can submit material for the following sections: Abstracts of recently Submitting your abstracts accepted papers (only for papers sent to refereed journals), Abstracts of recently accepted major re- Latex macros for submitting abstracts views (not standard conference contributions), Dis- and dissertation abstracts (by e-mail to sertation Abstracts (presenting abstracts of new [email protected]) are appended to Ph.D dissertations), Meetings (announcing meet- each Call for Abstracts. -
How Supernovae Became the Basis of Observational Cosmology
Journal of Astronomical History and Heritage, 19(2), 203–215 (2016). HOW SUPERNOVAE BECAME THE BASIS OF OBSERVATIONAL COSMOLOGY Maria Victorovna Pruzhinskaya Laboratoire de Physique Corpusculaire, Université Clermont Auvergne, Université Blaise Pascal, CNRS/IN2P3, Clermont-Ferrand, France; and Sternberg Astronomical Institute of Lomonosov Moscow State University, 119991, Moscow, Universitetsky prospect 13, Russia. Email: [email protected] and Sergey Mikhailovich Lisakov Laboratoire Lagrange, UMR7293, Université Nice Sophia-Antipolis, Observatoire de la Côte d’Azur, Boulevard de l'Observatoire, CS 34229, Nice, France. Email: [email protected] Abstract: This paper is dedicated to the discovery of one of the most important relationships in supernova cosmology—the relation between the peak luminosity of Type Ia supernovae and their luminosity decline rate after maximum light. The history of this relationship is quite long and interesting. The relationship was independently discovered by the American statistician and astronomer Bert Woodard Rust and the Soviet astronomer Yury Pavlovich Pskovskii in the 1970s. Using a limited sample of Type I supernovae they were able to show that the brighter the supernova is, the slower its luminosity declines after maximum. Only with the appearance of CCD cameras could Mark Phillips re-inspect this relationship on a new level of accuracy using a better sample of supernovae. His investigations confirmed the idea proposed earlier by Rust and Pskovskii. Keywords: supernovae, Pskovskii, Rust 1 INTRODUCTION However, from the moment that Albert Einstein (1879–1955; Whittaker, 1955) introduced into the In 1998–1999 astronomers discovered the accel- equations of the General Theory of Relativity a erating expansion of the Universe through the cosmological constant until the discovery of the observations of very far standard candles (for accelerating expansion of the Universe, nearly a review see Lipunov and Chernin, 2012). -
Power and Politics in Higher Education.Pdf
01FM (i-vi) 12/9/02 11:13 AM Page iii POWER AND POLITICS IN UNIVERSITY GOVERNANCE Organization and Change at the Universidad Nacional Autónoma de México Imanol Ordorika RoutledgeFalmer New York & London 01FM (i-vi) 12/9/02 11:13 AM Page iv Published in 2003 by RoutledgeFalmer 29 West 35th Street New York, NY 10001 www.routledge-ny.com Published in Great Britain by RoutledgeFalmer 11 New Fetter Lane London EC4P 4EE www.routledge.co.uk RoutledgeFalmer is an imprint of the Taylor & Francis Group Printed in the United States of America on acid-free paper. Copyright © 2003 by Taylor & Francis Books, Inc. All rights reserved. No part of this book may be reprinted or reproduced or utilized in any form or by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying and recording, or in any information storage or retrieval system, without permission in writing from the publisher. 10 9 8 7 6 5 4 3 2 1 Library of Congress Cataloging-in-Publication Data Ordorika, Imanol. Power and politics in university governance : organization and change at the Universidad Nacional Autónoma de Mexico / by Imanol Ordorika. p. cm. — (RoutledgeFalmer dissertation series in higher education) Includes bibliographical references. ISBN 0-415-93515-6 1. Universidad Nacional Autónoma de México. 2. Higher education and state— Mexico—Case studies. I. Title. II. Studies in higher education, dissertation series. LE7.M599 .O73 2002 378.72'53—dc21 2002069896 01FM (i-vi) 12/9/02 11:13 AM Page v A Imanoltxu y Amaya, porque arrasan todo con su alegría y su intensidad. -
Reflections December 2020
Surviving the Bobcat Fire By Robert Anderson As recently as December 9, our solar astronomer, Steve Padilla, was taking his evening walk and noticed the smoke of a hotspot flaring up in the canyon just below the Observatory. It was a remnant of the Bobcat Fire, which started nearby on September 6. The local Angeles National Forest firefighters were notified of the flareup, either to monitor it or extinguish it if needed. They have returned many times during the last three months. And we are always glad to see them, especially those individuals who put water to flame here and battled to save the most productive and famous observatory in history. On the sunny Labor Day weekend, when the Bobcat Fire started near Cogswell Reservoir in a canyon east of the Mount Wilson, the Observatory’s maintenance staff went on cautious alert. As the fire spread out of control, it stayed to the east burning north and south of the reservoir for days, threatening communities in the foothills of the San Gabriels. Nevertheless, all non-essential staff and residents were evacuated off the mountain just in case. Under a surreal, smoke-filled September sky, crews David Cendejas, the superintendent of the Observatory, prepare to defend the Observatory. Photo: D. Cendejas and a skeleton crew of CHARA staff, stayed to monitor the situation and to secure the grounds. Routine year- round maintenance of Mount Wilson always includes In this issue . clearing a wide perimeter of combustibles from the buildings, but when a large fire is burning nearby, clearing Surviving the Fire ……………1 Betelgeuse & Baade …………….5 anything that has been missed becomes an urgent priority, News + Notes .….………………2 Thanks to our Supporters! ..….7 along with double-checking all the fire equipment. -
Women in Astronomy: an Introductory Resource Guide
Women in Astronomy: An Introductory Resource Guide by Andrew Fraknoi (Fromm Institute, University of San Francisco) [April 2019] © copyright 2019 by Andrew Fraknoi. All rights reserved. For permission to use, or to suggest additional materials, please contact the author at e-mail: fraknoi {at} fhda {dot} edu This guide to non-technical English-language materials is not meant to be a comprehensive or scholarly introduction to the complex topic of the role of women in astronomy. It is simply a resource for educators and students who wish to begin exploring the challenges and triumphs of women of the past and present. It’s also an opportunity to get to know the lives and work of some of the key women who have overcome prejudice and exclusion to make significant contributions to our field. We only include a representative selection of living women astronomers about whom non-technical material at the level of beginning astronomy students is easily available. Lack of inclusion in this introductory list is not meant to suggest any less importance. We also don’t include Wikipedia articles, although those are sometimes a good place for students to begin. Suggestions for additional non-technical listings are most welcome. Vera Rubin Annie Cannon & Henrietta Leavitt Maria Mitchell Cecilia Payne ______________________________________________________________________________ Table of Contents: 1. Written Resources on the History of Women in Astronomy 2. Written Resources on Issues Women Face 3. Web Resources on the History of Women in Astronomy 4. Web Resources on Issues Women Face 5. Material on Some Specific Women Astronomers of the Past: Annie Cannon Margaret Huggins Nancy Roman Agnes Clerke Henrietta Leavitt Vera Rubin Williamina Fleming Antonia Maury Charlotte Moore Sitterly Caroline Herschel Maria Mitchell Mary Somerville Dorrit Hoffleit Cecilia Payne-Gaposchkin Beatrice Tinsley Helen Sawyer Hogg Dorothea Klumpke Roberts 6. -
Formation of Massive Stars and Black Holes in Self-Gravitating AGN Discs
Mon. Not. R. Astron. Soc. 000, 000–000 (0000) Printed 1 November 2018 (MN LATEX style file v1.4) Formation of massive stars and black holes in self-gravitating AGN discs, and gravitational waves in LISA band. Yuri Levin1,2 (1)601 Campbell Hall, University of California, Berkeley, California, 94720 (2) Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Toronto, ON M5S 3H8, Canada printed 1 November 2018 ABSTRACT We propose a scenario in which massive stars form at the outer edges of an AGN accretion disc. We analyze the dynamics of a disc forming around a supermassive black hole, in which the angular momentum is transported by turbulence induced by the disc’s self-gravity. We find that once the surface density of the disc exceeds a critical value, the disc fragments into dense clumps. We argue that the clumps accrete material from the remaining disc and merge into larger clumps; the upper mass of a merged clump is a few tens to a few hundreds of solar mass. The biggest clumps collapse and form massive stars, which produce few-tens-solar-mass black holes at the end of their evolution. We construct a model of the AGN disc which includes extra heat sources from the embedded black holes. If the embedded black holes can accrete at the Bondi rate, then the feedback from accretion onto the embedded black holes may stabilize the AGN disc against the Toomre instability for an interesting range of the model parameters. By contrast, if the rate of accretion onto the embedded holes is below the Eddington limit, then the extra heating is insufficient to stabilize the disc.