December 2018 BRAS Newsletter
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Lurking in the Shadows: Wide-Separation Gas Giants As Tracers of Planet Formation
Lurking in the Shadows: Wide-Separation Gas Giants as Tracers of Planet Formation Thesis by Marta Levesque Bryan In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy CALIFORNIA INSTITUTE OF TECHNOLOGY Pasadena, California 2018 Defended May 1, 2018 ii © 2018 Marta Levesque Bryan ORCID: [0000-0002-6076-5967] All rights reserved iii ACKNOWLEDGEMENTS First and foremost I would like to thank Heather Knutson, who I had the great privilege of working with as my thesis advisor. Her encouragement, guidance, and perspective helped me navigate many a challenging problem, and my conversations with her were a consistent source of positivity and learning throughout my time at Caltech. I leave graduate school a better scientist and person for having her as a role model. Heather fostered a wonderfully positive and supportive environment for her students, giving us the space to explore and grow - I could not have asked for a better advisor or research experience. I would also like to thank Konstantin Batygin for enthusiastic and illuminating discussions that always left me more excited to explore the result at hand. Thank you as well to Dimitri Mawet for providing both expertise and contagious optimism for some of my latest direct imaging endeavors. Thank you to the rest of my thesis committee, namely Geoff Blake, Evan Kirby, and Chuck Steidel for their support, helpful conversations, and insightful questions. I am grateful to have had the opportunity to collaborate with Brendan Bowler. His talk at Caltech my second year of graduate school introduced me to an unexpected population of massive wide-separation planetary-mass companions, and lead to a long-running collaboration from which several of my thesis projects were born. -
FY08 Technical Papers by GSMTPO Staff
AURA/NOAO ANNUAL REPORT FY 2008 Submitted to the National Science Foundation July 23, 2008 Revised as Complete and Submitted December 23, 2008 NGC 660, ~13 Mpc from the Earth, is a peculiar, polar ring galaxy that resulted from two galaxies colliding. It consists of a nearly edge-on disk and a strongly warped outer disk. Image Credit: T.A. Rector/University of Alaska, Anchorage NATIONAL OPTICAL ASTRONOMY OBSERVATORY NOAO ANNUAL REPORT FY 2008 Submitted to the National Science Foundation December 23, 2008 TABLE OF CONTENTS EXECUTIVE SUMMARY ............................................................................................................................. 1 1 SCIENTIFIC ACTIVITIES AND FINDINGS ..................................................................................... 2 1.1 Cerro Tololo Inter-American Observatory...................................................................................... 2 The Once and Future Supernova η Carinae...................................................................................................... 2 A Stellar Merger and a Missing White Dwarf.................................................................................................. 3 Imaging the COSMOS...................................................................................................................................... 3 The Hubble Constant from a Gravitational Lens.............................................................................................. 4 A New Dwarf Nova in the Period Gap............................................................................................................ -
Wildcard Innovations Argo Navis: So Just How Does It Stack up to the Sky Commander? Tom Trusock – 11/2004
Copyright © 2004 CloudyNights Telescope Reviews WildCard Innovations Argo Navis: So just how does it stack up to the Sky Commander? Tom Trusock – 11/2004 Reviewed: Argo Navis Ok – so I’m lazy. Features: • Digital Telescope Well – maybe that’s not quite true. There are Computer some nights I just don’t believe in excess work. • 2 serial interfaces I’m basically a visual observer, and while I do • Dual CPU’s enjoy the challenge of the hunt – I often just • 2 Meg Ram want to get to the target. Years ago, I settled on • Multitude of Catalogs DSC’s as my one of my preferred methods of finding DSO’s – especially faint fuzzies. If you are new to DSC (Digital Setting Circles) you might want to start off by reading “A Digital Setting Circles Primer”. I’ve owned at least a half dozen different units, among them units from JMI, Celestron, Sky Commander and now the newest kid on the block; the Argo Navis. Coming out of Australia, the Argo makes use of modern technology and components, utilizing not one, but two Motorola 5206e ColdFire 40mhz 32bit CPU’s (the same family of CPU’s used in the popular Palm series of Personal Digital Assistants) 2mb of re-programmable flash memory, 512kb of static Ram, WildCard Innovations Argo Navis and 8kb of non-volatile Ram. It’s powered from 4 AA batteries or an 8 to 16V external source. When used with external power, the Argo offers an LCD heater function to assist in keeping the display functional and dew off. -
Commonwealth of Australia Gazette ASIC 16/02, Tuesday, 9 April 2002
= = `çããçåïÉ~äíÜ=çÑ=^ìëíê~äá~= = Commonwealth of Australia Gazette No. ASIC 16/02, Tuesday, 9 April 2002 Published by ASIC ^^ppff``==dd~~òòÉÉííííÉÉ== Contents Notices under the Corporations Act 2001 00/2496 01/1681 01/1682 02/0391 02/0392 02/0393 02/0394 02/0395 02/0396 02/0397 02/0398 02/0399 02/0400 02/0401 02/0402 02/0403 02/0404 02/0405 02/0406 02/0408 02/0409 Company deregistrations Page 43 Change of company status Page 404 Company reinstatements Page 405 ISSN 1445-6060 Available from www.asic.gov.au © Commonwealth of Australia, 2001 Email [email protected] This work is copyright. Apart from any use permitted under the Copyright Act 1968, all rights are reserved. Requests for authorisation to reproduce, publish or communicate this work should be made to: Gazette Publisher, Australian Securities and Investment Commission, GPO Box 5179AA, Melbourne Vic 3001 Commonwealth of Australia Gazette ASIC Gazette ASIC 16/02, Tuesday, 9 April 2002 Company deregistrations Page 43= = CORPORATIONS ACT 2001 Section 601CL(5) Notice is hereby given that the names of the foreign companies mentioned below have been struck off the register. Dated this nineteenth day of March 2002 Brendan Morgan DELEGATE OF THE AUSTRALIAN SECURITIES AND INVESTMENTS COMMISSION Name of Company ARBN ABBOTT WINES LIMITED 091 394 204 ADERO INTERNATIONAL,INC. 094 918 886 AEROSPATIALE SOCIETE NATIONALE INDUSTRIELLE 083 792 072 AGGREKO UK LIMITED 052 895 922 ANZEX RESOURCES LTD 088 458 637 ASIAN TITLE LIMITED 083 755 828 AXENT TECHNOLOGIES I, INC. 094 401 617 BANQUE WORMS 082 172 307 BLACKWELL'S BOOK SERVICES LIMITED 093 501 252 BLUE OCEAN INT'L LIMITED 086 028 391 BRIGGS OF BURTON PLC 094 599 372 CANAUSTRA RESOURCES INC. -
Naming the Extrasolar Planets
Naming the extrasolar planets W. Lyra Max Planck Institute for Astronomy, K¨onigstuhl 17, 69177, Heidelberg, Germany [email protected] Abstract and OGLE-TR-182 b, which does not help educators convey the message that these planets are quite similar to Jupiter. Extrasolar planets are not named and are referred to only In stark contrast, the sentence“planet Apollo is a gas giant by their assigned scientific designation. The reason given like Jupiter” is heavily - yet invisibly - coated with Coper- by the IAU to not name the planets is that it is consid- nicanism. ered impractical as planets are expected to be common. I One reason given by the IAU for not considering naming advance some reasons as to why this logic is flawed, and sug- the extrasolar planets is that it is a task deemed impractical. gest names for the 403 extrasolar planet candidates known One source is quoted as having said “if planets are found to as of Oct 2009. The names follow a scheme of association occur very frequently in the Universe, a system of individual with the constellation that the host star pertains to, and names for planets might well rapidly be found equally im- therefore are mostly drawn from Roman-Greek mythology. practicable as it is for stars, as planet discoveries progress.” Other mythologies may also be used given that a suitable 1. This leads to a second argument. It is indeed impractical association is established. to name all stars. But some stars are named nonetheless. In fact, all other classes of astronomical bodies are named. -
FOR an ADVANCED Oaoi
.' ' ' > \ .\i I X-732-67-363 < I A COMPUTER, CONTROL SYSTEM I FOR AN ADVANCED OAOi ) I i I , 1 \ i J'OHN A. ,HRASTAR , P 1 (ACCESSION NUMBER) (THRU) I P > . -. c (PAGES) / + AUGUST 1967 - I . \ \ I, I \ / - k d - GO~DARD'SPACE FLIGHT CENTER ' GREENBELT, MARYLAND . .r A COMPUTER CONTROL SYSTEM FOR AN ADVANCED OAO John A. Hrastar August 1967 Goddard Space Flight Center Greenbelt, Maryland A COMPUTER CONTROL SYSTEM FOR AN ADVANCED OAO John A. Hrastar SUMMARY The purpose of the study covered by this report was to determine the feasibility of using an on-board digital computer and strap-down inertial reference unit for attitude control of an advanced OAO space- craft. An integrated, three axis control law was assumed which had been previously proven stable in the large. The principal advantage of this type of control system is the ability to complete three axis reori- entations over large angles. This system, although apparently complex, has the effect of simplifying the overall system. This is because a re- orientation is a simple extension of a hold or point operation, i.e., mode switching may be simplified. The study indicates that a system of this type is feasible and offers many advantages over present systems. The time for a reorientation using this type of control is considerably shorter than the time required using more conventional methods. The computer and inertial reference unit usedinthe study had the characteristics of systems presently under development. Feasibility, therefore is within the present state of the art, requiring only continued development of these systems. -
Exploring the Brown Dwarf Desert C
Astronomy & Astrophysics manuscript no. draft c ESO 2018 March 5, 2018 MOA-2007-BLG-197: Exploring the brown dwarf desert C. Ranc1; 35, A. Cassan1; 35, M. D. Albrow2; 35, D. Kubas1; 35, I. A. Bond3; 36, V. Batista1; 35, J.-P. Beaulieu1; 35, D. P. Bennett4; 36, M. Dominik5; 35, Subo Dong6; 37, P. Fouqué7; 8; 35, A. Gould9; 37, J. Greenhilly10; 35, U. G. Jørgensen11; 35, N. Kains12; 5; 35, J. Menzies13; 35, T. Sumi14; 36, E. Bachelet15; 35, C. Coutures1; 35, S. Dieters1; 35, D. Dominis Prester16; 35, J. Donatowicz17; 35, B. S. Gaudi9; 37, C. Han18; 37, M. Hundertmark5; 11, K. Horne5; 35, S. R. Kane19; 35, C.-U. Lee20; 37, J.-B. Marquette1; 35, B.-G. Park20; 37, K. R. Pollard2; 35, K. C. Sahu12; 35, R. Street21; 35, Y. Tsapras21; 22; 35, J. Wambsganss22; 35, A. Williams23; 24; 35, M. Zub22; 35, F. Abe25; 36, A. Fukui26; 36, Y. Itow25; 36, K. Masuda25; 36, Y. Matsubara25; 36, Y. Muraki25; 36, K. Ohnishi27; 36, N. Rattenbury28; 36, To. Saito29; 36, D. J. Sullivan30; 36, W. L. Sweatman31; 36, P. J. Tristram32; 36, P. C. M. Yock33; 36, and A. Yonehara34; 36 (Affiliations can be found after the references) Received <date> / accepted <date> ABSTRACT We present the analysis of MOA-2007-BLG-197Lb, the first brown dwarf companion to a Sun-like star detected through gravitational microlensing. The event was alerted and followed-up photometrically by a network of telescopes from the PLANET, MOA, and µFUN collaborations, and observed at high angular resolution using the NaCo instrument at the VLT. -
Stats2010 E Final.Pdf
Imprint Publisher: Max-Planck-Institut für extraterrestrische Physik Editors and Layout: W. Collmar und J. Zanker-Smith Personnel 1 PERSONNEL 2010 Directors Min. Dir. J. Meyer, Section Head, Federal Ministry of Prof. Dr. R. Bender, Optical and Interpretative Astronomy, Economics and Technology also Professorship for Astronomy/Astrophysics at the Prof. Dr. E. Rohkamm, Thyssen Krupp AG, Düsseldorf Ludwig-Maximilians-University Munich Prof. Dr. R. Genzel, Infrared- and Submillimeter- Scientifi c Advisory Board Astronomy, also Prof. of Physics, University of California, Prof. Dr. R. Davies, Oxford University (UK) Berkeley (USA) (Managing Director) Prof. Dr. R. Ellis, CALTECH (USA) Prof. Dr. Kirpal Nandra, High-Energy Astrophysics Dr. N. Gehrels, NASA/GSFC (USA) Prof. Dr. G. Morfi ll, Theory, Non-linear Dynamics, Complex Prof. Dr. F. Harrison, CALTECH (USA) Plasmas Prof. Dr. O. Havnes, University of Tromsø (Norway) Prof. Dr. G. Haerendel (emeritus) Prof. Dr. P. Léna, Université Paris VII (France) Prof. Dr. R. Lüst (emeritus) Prof. Dr. R. McCray, University of Colorado (USA), Prof. Dr. K. Pinkau (emeritus) Chair of Board Prof. Dr. J. Trümper (emeritus) Prof. Dr. M. Salvati, Osservatorio Astrofi sico di Arcetri (Italy) Junior Research Groups and Minerva Fellows Dr. N.M. Förster Schreiber Humboldt Awardee Dr. S. Khochfar Prof. Dr. P. Henry, University of Hawaii (USA) Prof. Dr. H. Netzer, Tel Aviv University (Israel) MPG Fellow Prof. Dr. V. Tsytovich, Russian Academy of Sciences, Prof. Dr. A. Burkert (LMU) Moscow (Russia) Manager’s Assistant Prof. S. Veilleux, University of Maryland (USA) Dr. H. Scheingraber A. v. Humboldt Fellows Scientifi c Secretary Prof. Dr. D. Jaffe, University of Texas (USA) Dr. -
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 ::::::::::::::::::::::::::::::::::::::: -
Meeting Program
A A S MEETING PROGRAM 211TH MEETING OF THE AMERICAN ASTRONOMICAL SOCIETY WITH THE HIGH ENERGY ASTROPHYSICS DIVISION (HEAD) AND THE HISTORICAL ASTRONOMY DIVISION (HAD) 7-11 JANUARY 2008 AUSTIN, TX All scientific session will be held at the: Austin Convention Center COUNCIL .......................... 2 500 East Cesar Chavez St. Austin, TX 78701 EXHIBITS ........................... 4 FURTHER IN GRATITUDE INFORMATION ............... 6 AAS Paper Sorters SCHEDULE ....................... 7 Rachel Akeson, David Bartlett, Elizabeth Barton, SUNDAY ........................17 Joan Centrella, Jun Cui, Susana Deustua, Tapasi Ghosh, Jennifer Grier, Joe Hahn, Hugh Harris, MONDAY .......................21 Chryssa Kouveliotou, John Martin, Kevin Marvel, Kristen Menou, Brian Patten, Robert Quimby, Chris Springob, Joe Tenn, Dirk Terrell, Dave TUESDAY .......................25 Thompson, Liese van Zee, and Amy Winebarger WEDNESDAY ................77 We would like to thank the THURSDAY ................. 143 following sponsors: FRIDAY ......................... 203 Elsevier Northrop Grumman SATURDAY .................. 241 Lockheed Martin The TABASGO Foundation AUTHOR INDEX ........ 242 AAS COUNCIL J. Craig Wheeler Univ. of Texas President (6/2006-6/2008) John P. Huchra Harvard-Smithsonian, President-Elect CfA (6/2007-6/2008) Paul Vanden Bout NRAO Vice-President (6/2005-6/2008) Robert W. O’Connell Univ. of Virginia Vice-President (6/2006-6/2009) Lee W. Hartman Univ. of Michigan Vice-President (6/2007-6/2010) John Graham CIW Secretary (6/2004-6/2010) OFFICERS Hervey (Peter) STScI Treasurer Stockman (6/2005-6/2008) Timothy F. Slater Univ. of Arizona Education Officer (6/2006-6/2009) Mike A’Hearn Univ. of Maryland Pub. Board Chair (6/2005-6/2008) Kevin Marvel AAS Executive Officer (6/2006-Present) Gary J. Ferland Univ. of Kentucky (6/2007-6/2008) Suzanne Hawley Univ. -
Arxiv:0908.2624V1 [Astro-Ph.SR] 18 Aug 2009
Astronomy & Astrophysics Review manuscript No. (will be inserted by the editor) Accurate masses and radii of normal stars: Modern results and applications G. Torres · J. Andersen · A. Gim´enez Received: date / Accepted: date Abstract This paper presents and discusses a critical compilation of accurate, fun- damental determinations of stellar masses and radii. We have identified 95 detached binary systems containing 190 stars (94 eclipsing systems, and α Centauri) that satisfy our criterion that the mass and radius of both stars be known to ±3% or better. All are non-interacting systems, so the stars should have evolved as if they were single. This sample more than doubles that of the earlier similar review by Andersen (1991), extends the mass range at both ends and, for the first time, includes an extragalactic binary. In every case, we have examined the original data and recomputed the stellar parameters with a consistent set of assumptions and physical constants. To these we add interstellar reddening, effective temperature, metal abundance, rotational velocity and apsidal motion determinations when available, and we compute a number of other physical parameters, notably luminosity and distance. These accurate physical parameters reveal the effects of stellar evolution with un- precedented clarity, and we discuss the use of the data in observational tests of stellar evolution models in some detail. Earlier findings of significant structural differences between moderately fast-rotating, mildly active stars and single stars, ascribed to the presence of strong magnetic and spot activity, are confirmed beyond doubt. We also show how the best data can be used to test prescriptions for the subtle interplay be- tween convection, diffusion, and other non-classical effects in stellar models. -
Abundances of Massive Stars in Carina Nebula Within the Gaia- ESO Survey
Abundances of massive stars in Carina Nebula within the Gaia- ESO Survey Laurent Mahy University of Liège / KU Leuven F. Martins, A. Blazère, S. Rodriguez Berlanas, A. Herrero, E. Gosset,… (and the GES WG13) 1 Overview • Massive stars • Multiplicity • Determination of surface abundances ‣ Helium abundance ‣ CNO abundances and comparison with another survey • Conclusion and perspectives Overview • Massive stars • Multiplicity • Determination of surface abundances ‣ Helium abundance ‣ CNO abundances and comparison with another survey • Conclusion and perspectives M > 8 M log (L/L • M ~10 Age < 10 Myr Rare 4 M > 8 M log (L/L • M ~10 Age < 10 Myr Rare 4 Overview • Massive stars • Multiplicity • Determination of surface abundances ‣ Helium abundance ‣ CNO abundances and comparison with another survey • Conclusion and perspectives Trumpler 15 Collinder 232 Trumpler 14 • presumably single • SB2 Trumpler 16 Collinder 228 6 Trumpler 15 Collinder 232 Trumpler 14 • presumably single • SB2 Trumpler 16 Collinder 228 6 Trumpler 15 Collinder 232 Trumpler 14 • presumably single • SB2 Trumpler 16 But other brighter massive stars exist in Collinder 228 Carina nebula 6 Multiplicity GES: 1 epoch In massive star population: ~ 70% of binaries up to 90% if P>3500 days 7 Sana & Evans (2011) Multiplicity GES: 1 epoch In massive star population: ~ 70% of binaries up to 90% if P>3500 days 7 Sana & Evans (2011) Multiplicity GES: 1 epoch In massive star population: ~ 70% of binaries up to 90% if P>3500 days 7 Sana & Evans (2011) Multiplicity GES: 1 epoch In massive star population: ~ 70% of binaries up to 90% if P>3500 days 7 Sana & Evans (2011) Multiplicity GES: 1 epoch In massive star population: ~ 70% of binaries up to 90% if P>3500 days 7 Sana & Evans (2011) Multiplicity • Lower binary fraction in Tr14 ~ 13.7% (see S.