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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. -
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. -
Abstracts Connecting to the Boston University Network
20th Cambridge Workshop: Cool Stars, Stellar Systems, and the Sun July 29 - Aug 3, 2018 Boston / Cambridge, USA Abstracts Connecting to the Boston University Network 1. Select network ”BU Guest (unencrypted)” 2. Once connected, open a web browser and try to navigate to a website. You should be redirected to https://safeconnect.bu.edu:9443 for registration. If the page does not automatically redirect, go to bu.edu to be brought to the login page. 3. Enter the login information: Guest Username: CoolStars20 Password: CoolStars20 Click to accept the conditions then log in. ii Foreword Our story starts on January 31, 1980 when a small group of about 50 astronomers came to- gether, organized by Andrea Dupree, to discuss the results from the new high-energy satel- lites IUE and Einstein. Called “Cool Stars, Stellar Systems, and the Sun,” the meeting empha- sized the solar stellar connection and focused discussion on “several topics … in which the similarity is manifest: the structures of chromospheres and coronae, stellar activity, and the phenomena of mass loss,” according to the preface of the resulting, “Special Report of the Smithsonian Astrophysical Observatory.” We could easily have chosen the same topics for this meeting. Over the summer of 1980, the group met again in Bonas, France and then back in Cambridge in 1981. Nearly 40 years on, I am comfortable saying these workshops have evolved to be the premier conference series for cool star research. Cool Stars has been held largely biennially, alternating between North America and Europe. Over that time, the field of stellar astro- physics has been upended several times, first by results from Hubble, then ROSAT, then Keck and other large aperture ground-based adaptive optics telescopes. -
Spectral and Atmospheric Characterization of 51 Eridani B Using VLT/SPHERE?,?? M
A&A 603, A57 (2017) Astronomy DOI: 10.1051/0004-6361/201629767 & c ESO 2017 Astrophysics Spectral and atmospheric characterization of 51 Eridani b using VLT/SPHERE?,?? M. Samland1; 2, P. Mollière1; 2, M. Bonnefoy3, A.-L. Maire1, F. Cantalloube1; 3; 4, A. C. Cheetham5, D. Mesa6, R. Gratton6, B. A. Biller7; 1, Z. Wahhaj8, J. Bouwman1, W. Brandner1, D. Melnick9, J. Carson9; 1, M. Janson10; 1, T. Henning1, D. Homeier11, C. Mordasini12, M. Langlois13; 14, S. P. Quanz15, R. van Boekel1, A. Zurlo16; 17; 14, J. E. Schlieder18; 1, H. Avenhaus16; 17; 15, J.-L. Beuzit3, A. Boccaletti19, M. Bonavita7; 6, G. Chauvin3, R. Claudi6, M. Cudel3, S. Desidera6, M. Feldt1, T. Fusco4, R. Galicher19, T. G. Kopytova1; 2; 20; 21, A.-M. Lagrange3, H. Le Coroller14, P. Martinez22, O. Moeller-Nilsson1, D. Mouillet3, L. M. Mugnier4, C. Perrot19, A. Sevin19, E. Sissa6, A. Vigan14, and L. Weber5 (Affiliations can be found after the references) Received 21 September 2016 / Accepted 10 April 2017 ABSTRACT Context. 51 Eridani b is an exoplanet around a young (20 Myr) nearby (29.4 pc) F0-type star, which was recently discovered by direct imaging. It is one of the closest direct imaging planets in angular and physical separation (∼0.500, ∼13 au) and is well suited for spectroscopic analysis using integral field spectrographs. Aims. We aim to refine the atmospheric properties of the known giant planet and to constrain the architecture of the system further by searching for additional companions. Methods. We used the extreme adaptive optics instrument SPHERE at the Very Large Telescope (VLT) to obtain simultaneous dual-band imaging with IRDIS and integral field spectra with IFS, extending the spectral coverage of the planet to the complete Y- to H-band range and providing ad- ditional photometry in the K12-bands (2.11, 2:25 µm). -
Exoplanet Greetings from President Gaber
utnews.utoledo.edu AUG. 24, 2015 VOLUME 16, ISSUE 1 Greetings from President Gaber Dear Faculty, Staff and Students, Welcome to the start of a new academic year! As you might know, I have had the privilege of serving as UT’s president since July 1, and I have been eagerly awaiting the energy and enthusiasm that comes with the start of the fall semester. I’ve had the chance to say hello to some of you, and I’m looking forward to many more meetings during campus activities and programs, at athletic events, or just in line for lunch at the Student Union. During the summer, I’ve been able to meet with many groups across campus, as well as community leaders and elected officials at all levels of government representing northwest Ohio. I’m excited to work with my leadership team to find ways we can enhance our relationships with the various components of the community to provide learning and engagement opportunities for our students and faculty. I am currently working to finalize my senior leadership team. We’ve combined the external affairs and institutional advancement vice presidencies into one position. Sam McCrimmon, a great addition to UT from the University of Pittsburgh Medical Center, will President Sharon Gaber has had a full schedule since becoming the lead the new division. University’s 17th president July 1. Last week she attended a reception for new faculty members in the Driscoll Alumni Center, top, and she helped continued on p. 3 students move into Parks Tower. UT astronomer part of research team to discover ‘young Jupiter’ exoplanet By Meghan Cunningham University of Toledo researcher is among a group of astronomers to discover a young AJupiter-like planet that could help further our understanding about how planets formed around the sun. -
En Interaktiv Visualisering Av Data Och Upptäcktsmetoder Karin Reidarman
LIU-ITN-TEK-A-018/045--SE Exoplaneter: En Interaktiv Visualisering av Data och Upptäcktsmetoder Karin Reidarman 2018-11-30 Department of Science and Technology Institutionen för teknik och naturvetenskap Linköping University Linköpings universitet nedewS ,gnipökrroN 47 106-ES 47 ,gnipökrroN nedewS 106 47 gnipökrroN LIU-ITN-TEK-A-018/045--SE Exoplaneter: En Interaktiv Visualisering av Data och Upptäcktsmetoder Examensarbete utfört i Medieteknik vid Tekniska högskolan vid Linköpings universitet Karin Reidarman Handledare Emil Axelsson Examinator Anders Ynnerman Norrköping 2018-11-30 Upphovsrätt Detta dokument hålls tillgängligt på Internet – eller dess framtida ersättare – under en längre tid från publiceringsdatum under förutsättning att inga extra- ordinära omständigheter uppstår. Tillgång till dokumentet innebär tillstånd för var och en att läsa, ladda ner, skriva ut enstaka kopior för enskilt bruk och att använda det oförändrat för ickekommersiell forskning och för undervisning. Överföring av upphovsrätten vid en senare tidpunkt kan inte upphäva detta tillstånd. All annan användning av dokumentet kräver upphovsmannens medgivande. För att garantera äktheten, säkerheten och tillgängligheten finns det lösningar av teknisk och administrativ art. Upphovsmannens ideella rätt innefattar rätt att bli nämnd som upphovsman i den omfattning som god sed kräver vid användning av dokumentet på ovan beskrivna sätt samt skydd mot att dokumentet ändras eller presenteras i sådan form eller i sådant sammanhang som är kränkande för upphovsmannens litterära eller konstnärliga anseende eller egenart. För ytterligare information om Linköping University Electronic Press se förlagets hemsida http://www.ep.liu.se/ Copyright The publishers will keep this document online on the Internet - or its possible replacement - for a considerable time from the date of publication barring exceptional circumstances. -
Abstracts of Extreme Solar Systems 4 (Reykjavik, Iceland)
Abstracts of Extreme Solar Systems 4 (Reykjavik, Iceland) American Astronomical Society August, 2019 100 — New Discoveries scope (JWST), as well as other large ground-based and space-based telescopes coming online in the next 100.01 — Review of TESS’s First Year Survey and two decades. Future Plans The status of the TESS mission as it completes its first year of survey operations in July 2019 will bere- George Ricker1 viewed. The opportunities enabled by TESS’s unique 1 Kavli Institute, MIT (Cambridge, Massachusetts, United States) lunar-resonant orbit for an extended mission lasting more than a decade will also be presented. Successfully launched in April 2018, NASA’s Tran- siting Exoplanet Survey Satellite (TESS) is well on its way to discovering thousands of exoplanets in orbit 100.02 — The Gemini Planet Imager Exoplanet Sur- around the brightest stars in the sky. During its ini- vey: Giant Planet and Brown Dwarf Demographics tial two-year survey mission, TESS will monitor more from 10-100 AU than 200,000 bright stars in the solar neighborhood at Eric Nielsen1; Robert De Rosa1; Bruce Macintosh1; a two minute cadence for drops in brightness caused Jason Wang2; Jean-Baptiste Ruffio1; Eugene Chiang3; by planetary transits. This first-ever spaceborne all- Mark Marley4; Didier Saumon5; Dmitry Savransky6; sky transit survey is identifying planets ranging in Daniel Fabrycky7; Quinn Konopacky8; Jennifer size from Earth-sized to gas giants, orbiting a wide Patience9; Vanessa Bailey10 variety of host stars, from cool M dwarfs to hot O/B 1 KIPAC, Stanford University (Stanford, California, United States) giants. 2 Jet Propulsion Laboratory, California Institute of Technology TESS stars are typically 30–100 times brighter than (Pasadena, California, United States) those surveyed by the Kepler satellite; thus, TESS 3 Astronomy, California Institute of Technology (Pasadena, Califor- planets are proving far easier to characterize with nia, United States) follow-up observations than those from prior mis- 4 Astronomy, U.C. -
Proceedings of Spie
PROCEEDINGS OF SPIE SPIEDigitalLibrary.org/conference-proceedings-of-spie The ExoGRAVITY project: using single mode interferometry to characterize exoplanets Lacour, S., Wang, J., Nowak, M., Pueyo, L., Eisenhauer, F., et al. S. Lacour, J. J. Wang, M. Nowak, L. Pueyo, F. Eisenhauer, A.-M. Lagrange, P. Mollière, R. Abuter, A. Amorin, R. Asensio-Torres, M. Bauböck, M. Benisty, J. P. Berger, H. Beust, S. Blunt, A. Boccaletti, A. Bohn, M. Bonnefoy, H. Bonnet, W. Brandner, F. Cantalloube, P. Caselli, B. Charnay, G. Chauvin, E. Choquet, V. Christiaens, Y. Clénet, A. Cridland, P. T. de Zeeuw, R. Dembet, J. Dexter, A. Drescher, G. Duvert, F. Gao, P. Garcia, R. Garcia-Lopez, T. Gardner, E. Gendron, R. Genzel, S. Gillessen, J. H. Girard, X. Haubois, G. Heißel, T. Henning, S. Hinkley, S. Hippler, M. Horrobin, M. Houllé, Z. Hubert, A. Jiménez-Rosales, L. Jocou, J. Kammerer, M. Keppler, P. Kervella, L. Kreidberg, V. Lapeyrere, J.-B. Le Bouquin, P. Léna, D. Lutz, A.-L. Maire, A. Mérand, J. D. Monnier, D. Mouillet, A. Muller, E. Nasedkin, T. Ott, G. P. P. L. Otten, C. Paladini, T. Paumard, K. Perraut, G. Perrin, O. Pfuhl, J. Rameau, L. Rodet, G. Rodriguez- Coira, G. Rousset, J. Shangguan, T. Shimizu, J. Stadler, O. Straub, C. Straubmeier, E. Sturm, T. Stolker, E. F. van Dishoeck, A. Vigan, F. Vincent, S. D. von Fellenberg, K. Ward Duong, F. Widmann, E. Wieprecht, E. Wiezorrek, J. Woillez, "The ExoGRAVITY project: using single mode interferometry to characterize exoplanets," Proc. SPIE 11446, Optical and Infrared Interferometry and Imaging VII, 114460O (16 December 2020); doi: 10.1117/12.2561667 Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only Downloaded From: https://www.spiedigitallibrary.org/conference-proceedings-of-spie on 21 Dec 2020 Terms of Use: https://www.spiedigitallibrary.org/terms-of-use Invited Paper The ExoGRAVITY project: using single mode interferometry to characterize exoplanets S. -
Deep Exploration of Ε Eridani with Keck Ms-Band Vortex
The Astronomical Journal, 157:33 (20pp), 2019 January https://doi.org/10.3847/1538-3881/aaef8a © 2019. The American Astronomical Society. All rights reserved. Deep Exploration of ò Eridani with Keck Ms-band Vortex Coronagraphy and Radial Velocities: Mass and Orbital Parameters of the Giant Exoplanet* Dimitri Mawet1,2 , Lea Hirsch3,4 , Eve J. Lee5 , Jean-Baptiste Ruffio6 , Michael Bottom2 , Benjamin J. Fulton7 , Olivier Absil8,20 , Charles Beichman2,9,10, Brendan Bowler11 , Marta Bryan1 , Elodie Choquet1,21 , David Ciardi7, Valentin Christiaens8,12,13, Denis Defrère8 , Carlos Alberto Gomez Gonzalez14 , Andrew W. Howard1 , Elsa Huby15, Howard Isaacson4 , Rebecca Jensen-Clem4,22 , Molly Kosiarek16,23 , Geoff Marcy4 , Tiffany Meshkat17 , Erik Petigura1 , Maddalena Reggiani8 , Garreth Ruane1,24 , Eugene Serabyn2, Evan Sinukoff18 , Ji Wang1 , Lauren Weiss19 , and Marie Ygouf17 1 Department of Astronomy, California Institute of Technology, Pasadena, CA 91125, USA; [email protected] 2 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA 3 Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305, USA 4 University of California, Berkeley, 510 Campbell Hall, Astronomy Department, Berkeley, CA 94720, USA 5 TAPIR, Walter Burke Institute for Theoretical Physics, Mailcode 350-17, Caltech, Pasadena, CA 91125, USA 6 Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305, USA 7 NASA Exoplanet Science Institute, Caltech/IPAC-NExScI, 1200 East California Boulevard, Pasadena, CA 91125, USA 8 Space sciences, Technologies & Astrophysics Research (STAR) Institute, Université de Liège, Allée du Six Août 19c, B-4000 Sart Tilman, Belgium 9 Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA 10 NASA Exoplanet Science Institute, 770 S. -
Heavy Metal Jupiters and Other Places
HEAVY METAL JUPITERS AND OTHER PLACES edited by Heather Clitheroe and Jessie L. Christiansen This work and its contents is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. Contents About vii Introduction 1 Lullabies for AGIs 5 Sandy Parsons GPIES Rebels 11 Elaine Bowden A Theory of Formation 12 Premee Mohamed Life and the Places Between 15 Deborah L. Davitt About the contributors 21 About This work and its contents is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA. November, 2020. ‘Horse Head Nebula in Blue’ cover art by Cathrin Machin. HEAVY METAL JUPITERS AND OTHER PLACES | vii Introduction This year, 2020, has been a year of upheaval. A year of norms disrupted, of plans unraveled, of expectations unmet. But, in the chaos of this year, there has also been opportunity. Many people have had to re-evaluate ideas that had gone uninterrogated for a long time. For myself and my team, planning a conference that could have ended up as a cookie-cutter template of every other conference we had planned, we had to re-think just about every aspect of that conference. One such aspect – a public outreach event. -
2019 Newsletter
BERKELEY ASTRONOMY UNIVERSITY OF CALIFORNIA AT BERKELEY WINTER 2019 Astronomy in the News For full versions of news articles, visit news.berkeley.edu CONTENTS Astronomy in the News ........................... 1 MILKY WAY’S CENTRAL BLACK relativity,” said Lu, who began working with Undergraduate Spotlight ......................... 5 Ghez as a graduate student in 2003. “Our HOLE PUTS EINSTEIN’S galactic center is a special place, a unique place, News and Noteworthy ............................. 5 THEORIES TO THE TEST because we can study in detail the physics and Message from the Chair........................... 6 astrophysics of a supermassive black hole. It Commencement 2019 .............................. 6 June 20, 2019 - Bob Sanders, Media Relations is almost impossible to do that in any other Distinguished Lecture in Astronomy .... 7 galaxy.” University of California astronomers have Incoming Graduate Class ......................... 7 tested Albert Einstein’s theories of relativity in General relativity, which treats gravity as a Getting to Know Astro! ............................ 7 the crucible of the monstrous black hole at the warping of space and time, has been validated Upcoming Events ..................................... 8 center of our Milky Way galaxy and found it rock within our solar system and in the interactions solid. For now. between pairs of dense, solar-mass neutron Supporting Astronomy ............................ 8 New Giving Opportunities ...................... 8 The team, led by UCLA astronomer Andrea stars, or -
Exoplanetary Atmospheres: Key Insights, Challenges and Prospects
Exoplanetary Atmospheres: Key Insights, Challenges and Prospects Nikku Madhusudhan1 1Institute of Astronomy, University of Cambridge, Cambridge, UK, CB3 0HA; email: [email protected] xxxxxx 0000. 00:1{59 Keywords Copyright c 0000 by Annual Reviews. Extrasolar planets, exoplanetary atmospheres, planet formation, All rights reserved habitability, atmospheric composition Abstract Exoplanetary science is on the verge of an unprecedented revolution. The thousands of exoplanets discovered over the past decade have most recently been supplemented by discoveries of potentially habitable planets around nearby low-mass stars. Currently, the field is rapidly progressing towards detailed spectroscopic observations to characterise the atmospheres of these planets. While various surveys from space and ground are expected to detect numerous more exoplanets orbiting nearby stars, the imminent launch of JWST along with large ground- based facilities are expected to revolutionise exoplanetary spectroscopy. Such observations, combined with detailed theoretical models and in- verse methods, provide valuable insights into a wide range of physi- cal processes and chemical compositions in exoplanetary atmospheres. Depending on the planetary properties, the knowledge of atmospheric compositions can also place important constraints on planetary forma- tion and migration mechanisms, geophysical processes and, ultimately, arXiv:1904.03190v1 [astro-ph.EP] 5 Apr 2019 biosignatures. In the present review, we will discuss the modern and future landscape of this frontier area of exoplanetary atmospheres. We will start with a brief review of the area, emphasising the key insights gained from different observational methods and theoretical studies. This is followed by an in-depth discussion of the state-of-the-art, chal- lenges, and future prospects in three forefront branches of the area.