NEMESIS - Terror Rays from Space by Bertram Eljon Holubek, Germany, Version 4.2, Prairial 2G12009 (Summer +2009), Public Domain Text
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Dynamics and Stability of Telluric Planets Within the Habitable Zone of Extrasolar Planetary Systems
A&A 488, 1133–1147 (2008) Astronomy DOI: 10.1051/0004-6361:200809822 & c ESO 2008 Astrophysics Dynamics and stability of telluric planets within the habitable zone of extrasolar planetary systems Numerical simulations of test particles within the HD 4208 and HD 70642 systems T. C. Hinse1,2, R. Michelsen1,U.G.Jørgensen1 ,K.Go´zdziewski3, and S. Mikkola4 1 Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Ø, Denmark e-mail: [tobiash; rm]@astro.ku.dk 2 Armagh Observatory, College Hill, BT61 9DG Armagh, Northern Ireland, UK 3 Nicolaus Copernicus University, Torun Centre for Astronomy, Gagarin Str. 11, 87-100 Torun, Poland 4 Turku University Observatory, Väisäläntie 20, Piikkiö, Finland Received 20 March 2008 / Accepted 3 June 2008 ABSTRACT Aims. We study gravitational perturbation effects of observed giant extrasolar planets on hypothetical Earth-like planets in the context of the three-body problem. This paper considers a large parameter survey of different orbital configuration of two extrasolar giant planets (HD 70642b and HD 4208b) and compares their dynamical effect on Earth-mass planetary orbits initially located within the respective habitable terrestrial region. We are interested in determining giant-planet orbit (and mass) parameters that favor the condi- tion to render an Earth-mass planet to remain on a stable and bounded orbit within the continuous habitable zone. Methods. We applied symplectic numerical integration techniques to studying the short and long term time evolution of hypothetical Earth-mass planets that are treated as particles. In addition, we adopt the MEGNO technique to obtain a complete dynamical picture of the terrestrial phase space environment. -
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. -
Dynamical Stability and Habitability of a Terrestrial Planet in HD74156
A dynamic search for potential habitable planets amongst the extrasolar planets 1,2 1 1 1,3 1, 4 P. Hinds , A. Munro , S. T. Maddison , C. Tan , and M. C. Gino [1] Swinburne University, Australia [2] Pierce College, USA [3] Methodist Ladies’ College, Australia [4] Dudley Observatory, USA ABSTRACT: While the detection of habitable terrestrial planets around nearby stars is currently beyond our observational capabilities, dynamical studies can help us locate potential candidates. Following from the work of Menou & Tabachnik (2003), we use a symplectic integrator to search for potential stable terrestrial planetary orbits in the habitable zones of known extrasolar planetary systems. A swarm of massless test particles is initially used to identify stability zones, and then an Earth-mass planet is placed within these zones to investigate their dynamical stability. We investigate 22 new systems discovered since the work of Menou & Tabachnik, as well as simulate some of the previous 85 extrasolar systems whose orbital parameters have been more precisely constrained. In particular, we model three systems that are now confirmed or potential double planetary systems: HD169830, HD160691 and eps Eridani. The results of these dynamical studies can be used as a potential target list for the Terrestrial Planet Finder. Introduction Numerical Technique Results & Discussion To date 122 extrasolar planets have been detected around 107 stars, with 13 of them To follow the evolution of the planetary systems, we use the SWIFT integration software package1. This The systems we have investigated broadly fall in four categories: (1) unstable being multiple planet systems (Schneider, 2004). Observational evidence for the allows us to model a planetary system and a swarm of massless test particles in orbit around a central star. -
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 -
Exploring the Realm of Scaled Solar System Analogues with HARPS?,?? D
A&A 615, A175 (2018) Astronomy https://doi.org/10.1051/0004-6361/201832711 & c ESO 2018 Astrophysics Exploring the realm of scaled solar system analogues with HARPS?;?? D. Barbato1,2, A. Sozzetti2, S. Desidera3, M. Damasso2, A. S. Bonomo2, P. Giacobbe2, L. S. Colombo4, C. Lazzoni4,3 , R. Claudi3, R. Gratton3, G. LoCurto5, F. Marzari4, and C. Mordasini6 1 Dipartimento di Fisica, Università degli Studi di Torino, via Pietro Giuria 1, 10125, Torino, Italy e-mail: [email protected] 2 INAF – Osservatorio Astrofisico di Torino, Via Osservatorio 20, 10025, Pino Torinese, Italy 3 INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122, Padova, Italy 4 Dipartimento di Fisica e Astronomia “G. Galilei”, Università di Padova, Vicolo dell’Osservatorio 3, 35122, Padova, Italy 5 European Southern Observatory, Alonso de Córdova 3107, Vitacura, Santiago, Chile 6 Physikalisches Institut, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland Received 8 February 2018 / Accepted 21 April 2018 ABSTRACT Context. The assessment of the frequency of planetary systems reproducing the solar system’s architecture is still an open problem in exoplanetary science. Detailed study of multiplicity and architecture is generally hampered by limitations in quality, temporal extension and observing strategy, causing difficulties in detecting low-mass inner planets in the presence of outer giant planets. Aims. We present the results of high-cadence and high-precision HARPS observations on 20 solar-type stars known to host a single long-period giant planet in order to search for additional inner companions and estimate the occurence rate fp of scaled solar system analogues – in other words, systems featuring lower-mass inner planets in the presence of long-period giant planets. -
• August the 26Th 2004 Detection of the Radial-Velocity Signal Induced by OGLE-TR-111 B Using UVES/FLAMES on the VLT (See Pont Et Al
2004 • August the 26th 2004 Detection of the radial-velocity signal induced by OGLE-TR-111 b using UVES/FLAMES on the VLT (see Pont et al. 2004, A&A in press, astro-ph/0408499). • August the 25th 2004 TrES-1b: A new transiting exoplanet detected by the Trans-Atlantic Exoplanet Survey (TreS) team . (see Boulder Press release or Alonso et al.) • August the 25th 2004 HD 160691 c : A 14 Earth-mass planet detected with HARPS (see ESO Press Release or Santos et al.) • July the 8th 2004 HD 37605 b: The first extra-solar planet detected with HRS on the Hobby- Eberly Telescope (Cochran et al.) • May the 3rd 2004 HD 219452 Bb withdrawn by Desidera et al. • April the 28th 2004 Orbital solution for OGLE-TR-113 confirmed by Konacki et al • April the 15th 2004 OGLE 2003-BLG-235/MOA 2003-BLG-53: a planetary microlensing event (Bond et al.) • April the 14th 2004 FLAMES-UVES spectroscopic orbits for two OGLE III transiting candidates: OGLE-TR-113 and OGLE-TR-132 (Bouchy et al.) • February 2004 Detection of Carbon and Oxygen in the evaporating atmosphere of HD 209458 b by A. Vidal-Madjar et al. (from HST observations). • January the 5th 2004 Two planets orbiting giant stars announced by Mitchell et al. during the AAS meeting: HD 59686 b and 91 Aqr b (HD 219499 b). Two other more massive companions, Tau Gem b (HD 54719 b) and nu Oph b (HD 163917 b), have also been announced by the same authors. 2003 • December 2003 First planet detected with HARPS: HD 330075 b (see Mayor et al., in the ESO Messenger No 114) • July the 3rd 2003 A long-period planet on a circular orbit around HD 70642 announced by the AAT team (Carter et al. -
04 VO Annual Report PUB 2000.Pub
Vatican Observatory Annual Report 2004 Vatican Observatory (Castel Gandolfo) V-00120 Città del Vaticano Rome ITALY Vatican Observatory Research Group Steward Observatory University of Arizona Tucson, Arizona 85721 USA http://vaticanobservatory.org Vatican Observatory Publications Vatican Observatory Staff The following are permanent staff members of the Vatican Observatory, Castel Gandolfo, It- aly, and the Vatican Observatory Research Group (VORG), Tucson, Arizona: GEORGE V. COYNE, S.J., Director JAMES J. BOWES, S.J. SABINO MAFFEO, S.J., RICHARD P. BOYLE, S.J. Special Assistant to the Director JUAN CASANOVAS, S.J. ALESSANDRO OMIZZOLO GUY J. CONSOLMAGNO, S.J. WILLIAM R. STOEGER, S.J. CHRISTOPHER J. CORBALLY, S.J., ANDREW P. WHITMAN, S.J., Vice Director for VORG; Administrator VORG President, National Committee to International Astronomical Union Adjunct Scholars: JOSÉ G. FUNES, S.J. EMMANUEL M. CARREIRA, S.J. JEAN-BAPTISTE KIKWAYA, S.J. LOUIS CARUANA, S.J. GIUSEPPE KOCH, S.J. MICHAEL HELLER Vice Director for Administration ROBERT JANUSZ, S.J. GUSTAV TERES, S.J. Vatican Observatory Foundation Board of Directors Officers GEORGE V. COYNE, S.J., President PAUL M. HENKELS, Chairman of the Board CHRISTOPHER J. CORBALLY, S.J., First Vice President RICHARD P. BOYLE, S.J., Second Vice President WILLIAM R. STOEGER, S.J., Secretary MANUEL J. ESPINOZA, Treasurer Directors RICHARD P. BOYLE, S.J. SHEILA GRINELL CHRISTOPHER J. CORBALLY, S.J. JOHN B. HENKELS GEORGE V. COYNE, S.J. PAUL M. HENKELS MICHAEL A. CRONIN CHRISTOPHER P. HITCHCOCK CHARLES L. CURRIE, S.J. JOHN B. HOLLYWOOD, S.J. BEN DALBY ROCCO L. MARTINO KAREN DALBY JAMES C. McGEE PAULA D’ANGELO PETER P. -
TRUE MASSES of RADIAL-VELOCITY EXOPLANETS Robert A
APP Template V1.01 Article id: apj513330 Typesetter: MPS Date received by MPS: 19/05/2015 PE: CE : LE: UNCORRECTED PROOF The Astrophysical Journal, 00:000000 (28pp), 2015 Month Day © 2015. The American Astronomical Society. All rights reserved. TRUE MASSES OF RADIAL-VELOCITY EXOPLANETS Robert A. Brown Space Telescope Science Institute, USA; [email protected] Received 2015 January 12; accepted 2015 April 14; published 2015 MM DD ABSTRACT We study the task of estimating the true masses of known radial-velocity (RV) exoplanets by means of direct astrometry on coronagraphic images to measure the apparent separation between exoplanet and host star. Initially, we assume perfect knowledge of the RV orbital parameters and that all errors are due to photon statistics. We construct design reference missions for four missions currently under study at NASA: EXO-S and WFIRST-S, with external star shades for starlight suppression, EXO-C and WFIRST-C, with internal coronagraphs. These DRMs reveal extreme scheduling constraints due to the combination of solar and anti-solar pointing restrictions, photometric and obscurational completeness, image blurring due to orbital motion, and the “nodal effect,” which is the independence of apparent separation and inclination when the planet crosses the plane of the sky through the host star. Next, we address the issue of nonzero uncertainties in RV orbital parameters by investigating their impact on the observations of 21 single-planet systems. Except for two—GJ 676 A b and 16 Cyg B b, which are observable only by the star-shade missions—we find that current uncertainties in orbital parameters generally prevent accurate, unbiased estimation of true planetary mass. -
Mars Express
sp1240cover 7/7/04 4:17 PM Page 1 SP-1240 SP-1240 M ARS E XPRESS The Scientific Payload MARS EXPRESS The Scientific Payload Contact: ESA Publications Division c/o ESTEC, PO Box 299, 2200 AG Noordwijk, The Netherlands Tel. (31) 71 565 3400 - Fax (31) 71 565 5433 AAsec1.qxd 7/8/04 3:52 PM Page 1 SP-1240 August 2004 MARS EXPRESS The Scientific Payload AAsec1.qxd 7/8/04 3:52 PM Page ii SP-1240 ‘Mars Express: A European Mission to the Red Planet’ ISBN 92-9092-556-6 ISSN 0379-6566 Edited by Andrew Wilson ESA Publications Division Scientific Agustin Chicarro Coordination ESA Research and Scientific Support Department, ESTEC Published by ESA Publications Division ESTEC, Noordwijk, The Netherlands Price €50 Copyright © 2004 European Space Agency ii AAsec1.qxd 7/8/04 3:52 PM Page iii Contents Foreword v Overview The Mars Express Mission: An Overview 3 A. Chicarro, P. Martin & R. Trautner Scientific Instruments HRSC: the High Resolution Stereo Camera of Mars Express 17 G. Neukum, R. Jaumann and the HRSC Co-Investigator and Experiment Team OMEGA: Observatoire pour la Minéralogie, l’Eau, 37 les Glaces et l’Activité J-P. Bibring, A. Soufflot, M. Berthé et al. MARSIS: Mars Advanced Radar for Subsurface 51 and Ionosphere Sounding G. Picardi, D. Biccari, R. Seu et al. PFS: the Planetary Fourier Spectrometer for Mars Express 71 V. Formisano, D. Grassi, R. Orfei et al. SPICAM: Studying the Global Structure and 95 Composition of the Martian Atmosphere J.-L. Bertaux, D. Fonteyn, O. Korablev et al. -
NL#145 March/April
March/April 2009 Issue 145 A Publication for the members of the American Astronomical Society 3 President’s Column John Huchra, [email protected] Council Actions I have just come back from the Long Beach meeting, and all I can say is “wow!” We received many positive comments on both the talks and the high level of activity at the meeting, and the breakout 4 town halls and special sessions were all well attended. Despite restrictions on the use of NASA funds AAS Election for meeting travel we had nearly 2600 attendees. We are also sorry about the cold floor in the big hall, although many joked that this was a good way to keep people awake at 8:30 in the morning. The Results meeting had many high points, including, for me, the announcement of this year’s prize winners and a call for the Milky Way to go on a diet—evidence was presented for a near doubling of its mass, making us a one-to-one analogue of Andromeda. That also means that the two galaxies will crash into each 4 other much sooner than previously expected. There were kickoffs of both the International Year of Pasadena Meeting Astronomy (IYA), complete with a wonderful new movie on the history of the telescope by Interstellar Studios, and the new Astronomy & Astrophysics Decadal Survey, Astro2010 (more on that later). We also had thought provoking sessions on science in Australia and astronomy in China. My personal 6 prediction is that the next decade will be the decade of international collaboration as science, especially astronomy and astrophysics, continues to become more and more collaborative and international in Highlights from nature. -
An Analysis of the First Three Catalogues of Southern Star Clusters and Nebulae
ResearchOnline@JCU This file is part of the following reference: Cozens, Glendyn John (2008) An analysis of the first three catalogues of southern star clusters and nebulae. PhD thesis, James Cook University. Access to this file is available from: http://eprints.jcu.edu.au/24051/ The author has certified to JCU that they have made a reasonable effort to gain permission and acknowledge the owner of any third party copyright material included in this document. If you believe that this is not the case, please contact [email protected] and quote http://eprints.jcu.edu.au/24051/ Nicolas-Louis de La Caille, James Dunlop and John Herschel – An analysis of the First Three Catalogues of Southern Star Clusters and Nebulae Thesis submitted by Glendyn John COZENS BSc London, DipEd Adelaide in June 2008 for the degree of Doctor of Philosophy in the Faculty of Science, Engineering and Information Technology James Cook University STATEMENT OF ACCESS I, the undersigned, author of this work, understand that James Cook University will make this thesis available for use within the University Library and, via the Australian Digital Theses network, for use elsewhere. I understand that, as an unpublished work, a thesis has significant protection under the Copyright Act and; I do not wish to place any further restriction on access to this work. ____________________ Signature Date ii STATEMENT OF SOURCES DECLARATION I declare that this thesis is my own work and has not been submitted in any form for another degree or diploma at any university or other institution of tertiary education. Information derived from the published or unpublished work of others has been acknowledged in the text and a list of references is given. -
Spring 2013 a P R I L 2 0 1 3 P O I N T S O F INTEREST: the Spring 2013 Semester
BUSINESS NAME S P E C I A L Spring 2013 A P R I L 2 0 1 3 P O I N T S O F INTEREST: the Spring 2013 semester. in 2011. Big Bang or Chair’s corner A search for another medical Sponsored research expend- Big Bounce? physicist is underway and Physics & Astronomy’s itures from state, federal, and additional searches are being vision is to use its world-class private sources amounted to Schaefer to considered together with CCT science to train its students to $8.9M, an increase from the Stockholm in computational materials think creatively, flexibly, and $5.8M total five years ago. and computational nuclear analytically; to prepare in- Highlights of the faculty’s and Grad student physics. creasing numbers of students students’ research can be recognized 17 new PhD and 4 Medical to produce new knowledge found in this newsletter and on worldwide. Physics Masters students and to be productive citizens the department’s web site at: joined us in 2012, and 17 of Louisiana and the nation; http://ww.phys.lsu.edu. Steldt Leaves more PhD and 4 Medical and to utilize and expand its Legacy Physics MS candidates are research capabilities to en- expected in August 2013. 8 hance Louisiana’s, LSU’s, and students received PhDs and the Department’s national 13 received MS degrees dur- reputation, technical infra- ing 2012. At the start of the structure, and workforce. Fall 2013 semester, the total Three new faculty – Ivan number of students in the PhD INSIDE THIS Agullo (theoretical gravity), and MS program will be 99 ISSUE: Mark Wilde (quantum compu- and 18, respectively.