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Exoplanet Community Report
JPL Publication 09‐3 Exoplanet Community Report Edited by: P. R. Lawson, W. A. Traub and S. C. Unwin National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California March 2009 The work described in this publication was performed at a number of organizations, including the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (NASA). Publication was provided by the Jet Propulsion Laboratory. Compiling and publication support was provided by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement by the United States Government, or the Jet Propulsion Laboratory, California Institute of Technology. © 2009. All rights reserved. The exoplanet community’s top priority is that a line of probeclass missions for exoplanets be established, leading to a flagship mission at the earliest opportunity. iii Contents 1 EXECUTIVE SUMMARY.................................................................................................................. 1 1.1 INTRODUCTION...............................................................................................................................................1 1.2 EXOPLANET FORUM 2008: THE PROCESS OF CONSENSUS BEGINS.....................................................2 -
The CORALIE Survey for Southern Extrasolar Planets XVII
Astronomy & Astrophysics manuscript no. coralieXVII c ESO 2019 July 1, 2019 The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets ? ?? M. Marmier1, D. Segransan´ 1, S. Udry1, M. Mayor1, F. Pepe1, D. Queloz1, C. Lovis1, D. Naef1, N.C. Santos2;3;1, R. Alonso4;5;1, S. Alves8;1, S. Berthet1, B. Chazelas1, B-O. Demory9;1, X. Dumusque1, A. Eggenberger1, P. Figueira2;1, M. Gillon6;1, J. Hagelberg1, M. Lendl1, R. A. Mardling7;1, D. Megevand´ 1, M. Neveu1, J. Sahlmann1, D. Sosnowska1, M. Tewes10, and A. H.M.J. Triaud1 1 Observatoire astronomique de l’Universite´ de Geneve,` 51 ch. des Maillettes - Sauverny -, CH-1290 Versoix, Switzerland 2 Centro de Astrof´ısica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal 3 Departamento de F´ısica e Astronomia, Faculdade de Ciencias,ˆ Universidade do Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal 4 Instituto de Astrof´ısica de Canarias, C/ V´ıa Lactea´ S/N, E-38200 La Laguna, Spain 5 Departamento de Astrof´ısica, Universidad de La Laguna, E-38205 La Laguna, Spain 6 Universite´ de Liege,` Allee´ du 6 aoutˆ 17, Sart Tilman, Liege` 1, Belgium 7 School of Mathematical Sciences, Monash University, Victoria, 3800, Australia 8 Departamento de F´ısica, Universidade Federal do Rio Grande do Norte, 59072-970, Natal, RN., Brazil 9 Department of Earth, Atmospheric and Planetary Sciences, Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA 10 Laboratoire d’astrophysique, Ecole Polytechnique Fed´ erale´ de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland Received month day, year; accepted month day, year ABSTRACT Context. -
BAV Rundbrief Nr. 1 (2012)
BAV Rundbrief 61. Jahrgang Nr. 1 (2012) ISSN 0405-5497 D. Bannuscher Liebe BAVer 1 N. Reichmann Lichtkurve des EA-Veränderlichen RZ Cas 2 S. Hümmerich / OGLEII BUL-SC33 V4375 und MACHO 176.19087.17: Zwei neue K. Bernhard bedeckungsveränderliche RS-CVn-Sterne 7 S. Hümmerich Datamining in der OGLE-Datenbank - erste Versuche, erste Erfolge 10 W. Vollmann, W. Braune Beobachtung des Minimums von Zeta Aurigae Oktober - Dezember 2011 16 E. Pollmann / Hα-Emission und V-Korrelation als Sonden von Be-Sternscheiben 20 W. Vollmann / F. Puskás L. Pagel Beobachtung von V377 Aurigae 28 G. Srdoc, K. Bernhard GSC 01563-03262 und GSC 02626-00896: Zwei neue RR-Lyrae- Sterne aus der SuperWasp Datenbank 29 H. Diederich EX Hydrae - ein etwas sonderbarer Indermediärer Polar (IP) Teil 1 31 K. Wenzel TW Vul - ein vergessener unbekannter Heidelberger Veränderlicher 38 H. Diederich AM Canum Venaticorum - ein Doppelstern mit ultrakurzer Umlauf- periode 41 P. Lehmann R Corona Borealis 49 J. Neumann V407 Cygni 51 G. Maintz Der Blahzko-Effekt der RR-Lyrae-Sterne 52 Aus der Literatur W. Grimm Aus den IBVS 56 Aus der BAV J. Hübscher Aus der BAV Geschäftsführung 58 L. Pagel BAV-Veränderlichenbeobachter-Treffen am 5. Mai 2012 in Hartha 59 T. Lange Einzelbeobachtungsübersicht 2011 60 A. Oertlin Umsetzung eines Remoteteleskops 61 J. Hambsch AAVSO Jahrestreffen zum 100 jährigen Bestehen 64 Aus den Sektionen F. Walter Bedeckungsveränderliche: Epsilon Aurigae 67 Änderungen der BAV-Programm Bedeckungsveränderliche 68 F. Vohla Mirasterne: Neues zu vernachlässigten Mirasternen 69 T. Lange Kataklysmische: Aktivitäten zwischen Nov. 2011 und Januar 2012 72 J. Hübscher Auswertung: BAV Mitteilungen und aktueller Beobachtungseingang 74 C. -
SIAC Newsletter April 2015
April 2015 The Sidereal Times Southeastern Iowa Astronomy Club A Member Society of the Astronomical League Club Officers: Minutes March 19, 2015 Executive Committee President Jim Hilkin Vice President Libby published, Bill seconded, ship. Payment can be Vice President Libby Snipes Treasurer Vicki Philabaum Snipes called the meeng and the moon passed. made at a club meeng Secretary David Philabaum Chief Observer David Philabaum to order at 6:33 pm with Vicki gave the Treasurer's or by mailing them to PO Members-at-Large Claus Benninghoven the following members in report stang that the Box 14, West Burlington, Duane Gerling Blake Stumpf aendance: Carl Snipes , current balance in the IA 52655. John moved to Board of Directors Paul Sly, Chuck Block, checking account is approve the Treasurer's Chair Judy Hilkin Vice Chair Ray Reineke Claus Benninghoven, $1,914.04. She also stat- report, seconded by Secretary David Philabaum Members-at-Large Duane Gerling, Bill Stew- ed that she will be send- Chuck, and the moon Frank Libe Blake Stumpf art, Ray Reineke, John ing out noces reminding passed. Dave reported Jim Wilt Toney, and Dave & Vicki people when it is me to that the only groups on Audit Committee Dean Moberg (2012) Philabaum. Lavon Worley renew their member- the schedule at this me JT Stumpf (2013) John Toney (2014) from the conservaon ships. Dues remain $20 are the county Dark Newsletter board was also in aend- per year for a single Wings camps this sum- Karen Johnson ance. John moved to ap- membership and $30 per mer. Libby reported that -
Newsletter 2019-4 October 2019
Newsletter 2019-4 October 2019 www.variablestarssouth.org NGC 55 photobombs Mark Blackford’s study of the EW binary UY Sculptor. See page 7 for the story. Contents From the director - Mark Blackford ......................................................................................................................................................2 Sixth Variable Stars South Symposium – Mark Blackford ................................................................................3 Positions for SMC Novae 1897-1952 – Mati Morel .....................................................................................................4 As photo bombs go this one’s a beauty – Mark Blackford ..............................................................................7 The ZWO ASI 1600 MM-Cool camera – Roy Axelsen ............................................................................................8 The inconstant eclipsing binary BO Indus – Mark Blackford .....................................................................12 VW Hydri is still worth observing – Stan Walker ..........................................................................................................15 Short period pulsators at AAVSO – Alan Baldwin ......................................................................................................20 Publication watch .......................................................................................................................................................................................................21 -
Download a Sample Issue
ASTRONOMERS FROM ANTIQUITY PPAGEage 164 MARCH/APRIL 2019 $5 Probing for Planets Space agencies prepare next generation of exoplanet hunters THE UNIVERSITY OF TEXAS AT AUSTIN Mc DONALD OBSERVATORY STARDATE STAFF MARCH/APRIL • Vol. 47, No. 2 EXECUTIVE EDITOR Damond Benningfield EDITOR Rebecca Johnson ART DIRECTOR C.J. Duncan EATURES EPARtmENts TECHNICAL EDITOR F D Dr. Tom Barnes CONTRIBUTING EDITOR Alan MacRobert 4 Poets, Philosophers, Queens, Astronomers MERLIN 3 MARKETING MANAGER Casey Walker Early women astronomers drafted MARKETING ASSISTANT calendars, plotted eclipses, built SKY CALENDAR MARCH/APRIL 10 Joanne Duffy observatories, and helped shape humanity’s early understanding of the THE STARS IN MARCH/APRIL 12 universe For information about StarDate or other programs of the McDonald Observatory By Jasmin Fox-Skelly Education and Outreach Office, contact ASTROMISCELLANY 14 us at 512-471-5285. For subscription orders only, call 800-STARDATE. 16 Kepler Passes the Torch ASTRONEWS 20 StarDate (ISSN 0889-3098) is published As a successful planet-hunting bimonthly by the McDonald Observatory Resetting the Clock on Saturn’s Rings Education and Outreach Office, The Uni- spacecraft came to the end of its mission, versity of Texas at Austin, 2515 Speedway, Chasing Away Planet Nine Stop C1402, Austin, TX 78712. © 2019 a successor took flight. Several others are The University of Texas at Austin. Annual expected to follow in the next decade Chillin’ Under the Sun subscription rate is $26 in the United States. Subscriptions may be paid for using By Rebecca Johnson Birth of a Black Hole, or Death by Black Hole? credit card or money orders. The University of Texas cannot accept checks drawn on Gaia Spies Galaxy-Hopping Stars foreign banks. -
ABUNDANCE DERIVATIONS for the SECONDARY STARS in CATACLYSMIC VARIABLES from NEAR-INFRARED SPECTROSCOPY Thomas E
The Astrophysical Journal, 833:14 (30pp), 2016 December 10 doi:10.3847/0004-637X/833/1/14 © 2016. The American Astronomical Society. All rights reserved. ABUNDANCE DERIVATIONS FOR THE SECONDARY STARS IN CATACLYSMIC VARIABLES FROM NEAR-INFRARED SPECTROSCOPY Thomas E. Harrison1,2 Department of Astronomy, New Mexico State University, Box 30001, MSC 4500, Las Cruces, NM 88003-8001, USA; [email protected] Received 2016 August 3; revised 2016 September 2; accepted 2016 September 29; published 2016 December 1 ABSTRACT We derive metallicities for 41 cataclysmic variables (CVs) from near-infrared spectroscopy. We use synthetic spectra that cover the 0.8 μmλ2.5μm bandpass to ascertain the value of [Fe/H] for CVs with K-type donors, while also deriving abundances for other elements. Using calibrations for determining [Fe/H] from the K- band spectra of M-dwarfs, we derive more precise values for Teff for the secondaries in the shortest period CVs, and examine whether they have carbon deficits. In general, the donor stars in CVs have subsolar metallicities. We confirm carbon deficits for a large number of systems. CVs with orbital periods >5 hr are most likely to have unusual abundances. We identify four CVs with CO emission. We use phase-resolved spectra to ascertain the mass and radius of the donor in U Gem. The secondary star in U Gem appears to have a lower apparent gravity than a main sequence star of its spectral type. Applying this result to other CVs, we find that the later-than-expected spectral types observed for many CV donors are mostly an effect of inclination. -
Black Holes, Chaos in Universe, Processes in Space, Stars, Galaxies, Ordered Universe
International Journal of Astronomy 2020, 9(1): 12-26 DOI: 10.5923/j.astronomy.20200901.03 Black Hole & There is no Chaos in the Universe Weitter Duckss Independent Researcher, Zadar, Croatia Abstract This year's Nobel's Prize in physics has turned into another degradation of science. The first part of the article (3.) deals with chaos that includes very different star systems. Inside a system there are objects with a lot of satellites and those with none. Some planets in distant orbits and brown dwarfs are warmer than some stars. The objects and stars of the same mass have completely different temperatures and are often classified into almost all star types. There is light inside an atmosphere or on the surface of an object without an atmosphere, but it disappears just outside the atmosphere or the surface of the object without the atmosphere. There are galaxies with the blueshift and redshift; although the Universe expands faster and faster, there are 200 000 galaxies and clusters of galaxies that merge or collide. There are enormous differences in the quantity of redshift at the same distances for galaxies and larger objects, i.e., there are different distances – with the differences measured in billions of light-years – for the same quantities of redshift. The other part of the article (4.) removes chaos and returns order in the Universe by implementing identical principles in the whole of the volume and for all objects. Keywords Black holes, Chaos in universe, Processes in space, Stars, Galaxies, Ordered universe universality and removing any paradox that might negate the 1. -
Search for 150 Mhz Radio Emission from Extrasolar Planets in the TIFR GMRT Sky Survey
A&A 562, A108 (2014) Astronomy DOI: 10.1051/0004-6361/201321571 & c ESO 2014 Astrophysics Search for 150 MHz radio emission from extrasolar planets in the TIFR GMRT Sky Survey S. K. Sirothia1, A. Lecavelier des Etangs2,3, Gopal-Krishna1,N.G.Kantharia1, and C. H. Ishwar-Chandra1 1 National Centre for Radio Astrophysics, TIFR, Post Bag 3, Pune University Campus, 411007 Pune, India 2 CNRS, UMR 7095, Institut d’Astrophysique de Paris, 98bis boulevard Arago, 75014 Paris, France e-mail: [email protected] 3 UPMC Univ. Paris 6, UMR 7095, Institut d’Astrophysique de Paris, 98bis boulevard Arago, 75014 Paris, France Received 26 March 2013 / Accepted 7 January 2014 ABSTRACT The ongoing radio continuum TIFR GMRT Sky Survey (TGSS) using the Giant Metrewave Radio Telescope (GMRT) at 150 MHz offers an unprecedented opportunity to undertake a fairly deep search for low-frequency radio emission from nearby extrasolar plan- ets. Currently TGSS images are available for a little over a steradian, encompassing 175 confirmed exoplanetary systems. We have searched for their radio counterparts in the TGSS (150 MHz), supplemented with a search in the NRAO VLA Sky Survey (NVSS) and the VLA FIRST survey at 1.4 GHz. For 171 planetary systems, we find no evidence of radio emission in the TGSS maps, placing a3σ upper limit between 8.7 mJy and 136 mJy (median ∼24.8 mJy) at 150 MHz. These non-detections include the 55 Cnc system for which we place a 3σ upper limit of 28 mJy at 150 MHz. Nonetheless, for four of the extrasolar planetary systems, we find TGSS radio sources coinciding with or located very close to their coordinates. -
VSS Newsletter – May 2009
Newsletter 2009/2 2009 May From the Director The opening bars of the first movement Sometimes I feel like the conductor of an orchestra – I wave a wand but everyone else produces the real music. And that’s the way it is in these early days of VSS. A priority for me has been to recruit people far better qualified than I to develop the various spe- cialist areas of VSS. In addition to Stan Walker in LPVs and Alan Plummer in Visual, we now have Dr Paddy McGee of Adelaide to handle CVs. With a PhD in CVs and a range of valuable collabora- tions, it would be hard to find better. I’m really looking forward to see what Paddy comes up with for us. Bob Evans of Invercargill has kindly agreed to handle membership and finance for VSS. Thank God you’re here, Bob! Membership already stands at 20, and I’d expect more to sign up at the RASNZ Conference. A membership form is in the back of this Newsletter. Remember, only VSS members can partake in VSS Projects. After much arm-twisting, I’ve finally persuaded me to take on the role of Coordinator of the Eclips- ing Binaries Programme. I’ve got a couple of projects in mind that I’ll discuss later in this Newsletter, but I confess I’ve been too busy running this show to have anything concrete yet. Which is why a Director shouldn’t be a Coordinator. Anyone want to take Eclipsers away from me, please? Pleeeease? Everyone is waiting on what Michael Chapman will produce for our website, www.varstars.org. -
SAB C SAB 2010 ⋆ ⋆
Boletim ⋆ da ⋆ Boletim da Sociedade Astronˆomica Brasileira, 29, no.1, 26-53 SAB c SAB 2010 ⋆ ⋆ Naming the extrasolar planets W. Lyra American Museum of Natural History, 79th Street at Central Park West, New York, NY, 10024, USA e-mail: [email protected] Received January 14th 2010; accepted August 25th 2010 Resumo. Planetas extrassolares n˜ao s˜ao nomeados e s˜ao referenciados apenas pela sua designa¸c˜ao cient´ıfica. A raz˜ao apresentada pela UAI para n˜ao os nomear ´eque isso seria impratic´avel dado que os planetas devem ser comuns. Apresento algumas raz˜oes sobre porquˆeessa l´ogica ´einsustent´avel, e sugiro nomes para os 429 candidatos a planetas extrassolares conhecidos at´efevereiro de 2010. Os nomes seguem uma associa¸c˜ao com a constela¸c˜ao `aqual a estrela parental pertence e, desta forma, s˜ao em sua maioria retirados da mitologia greco-romana. Outras mitologias podem ser tamb´em usadas desde que uma associa¸c˜ao adequada seja estabelecida. Abstract. Extrasolar planets are not named and are referred to only by their assigned scientific designation. The reason given by the IAU to not name the planets is that it is considered impractical as planets are expected to be common. I advance some reasons as to why this logic is flawed, and suggest names for the 429 extrasolar planet candidates known as of Feb 2010. The names follow a scheme of association with the constellation that the host star pertains to, and therefore are mostly drawn from Roman-Greek mythology. Other mythologies may also be used given that a suitable association is established. -
Astrosat – Redbook – Proposals April-2016 to September-2016
AstroSat – redbook – proposals April-2016 to September-2016 PropId Title Abstract SrcNa me RA DEC Tid Piid Institut e Remar ks Probing various G05_002 X-ray binaries show a plethora of spectral and 2S 09 22 -63 17 T02 sudip TIFR properties of three timing properties which can be used to study 0921- 35.20 38.5 X-ray binaries with fundamental problems, such as probing the strong 630 ASTROSAT gravity and dense matter, and understanding the accretion-ejection mechanism. We propose to observe three X-ray binaries, 4U 1636-536, 2S 0921-630 and GS 1826-238, for a total exposure of 80 ks to study a number of such properties. This proposal relies on the broadband X-ray spectral and fast timing capabilities of ASTROSAT. -- -- -- 4U 16 40 -53 45 T01 sudip TIFR 1636- 55.50 05.0 536 -- -- -- GS 18 29 -23 47 T03 sudip TIFR 1826- 28.20 49.0 238 Globular Clusters (GCs) house exotic stellar G05_009 GCs: UV study of NGC 0 52 -26 34 T02 annapur IIA exotic stellar populations and are the only sites where the 288 45.240 57.400 ni products of direct collision of stars (Blue Straggler populations, stars, BSS) are found. GCs also have accreting binaries and binaries, WDs and Horizontal branch stars, which variables - A pilot are all bright in the UV. In the UV, all these stars stand out from the swamp of the cooler main- study sequence stars and red giants. Our simulations suggest that the colour-magnitude diagrams using UVIT filters create definite diagnostic regions which can be used to detect and identify these systems.