The K2 Mission: Characterization and Early results
Steve B. Howell,Charlie Sobeck,Michael J. Haas,Martin Still,Thomas Barclay,Fergal Mullally,Fergal Mullally,John Troeltzsch,Suzanne Aigrain,Stephen T. Bryson,D. A. Caldwell,D. A. Caldwell,William J. Chaplin,William J. Chaplin,William D. Cochran,Daniel Huber,Daniel Huber,Geoffrey W. Marcy,Andrea Miglio,Andrea Miglio,Joan Najita,Marcie Smith,Marcie Smith,Joseph D. Twicken,Joseph D. Twicken,Jonathan J. Fortney +25 more
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TLDR
The K2 mission as mentioned in this paper uses an innovative way of operating the Kepler spacecraft to observe target fields along the ecliptic for the next 2-3 years, with an estimated photometric precision near 400 ppm in a single 30 minute observation.Abstract:
The K2 mission will make use of the Kepler spacecraft and its assets to expand upon Kepler's groundbreaking discoveries in the fields of exoplanets and astrophysics through new and exciting observations. K2 will use an innovative way of operating the spacecraft to observe target fields along the ecliptic for the next 2-3 years. Early science commissioning observations have shown an estimated photometric precision near 400 ppm in a single 30 minute observation, and a 6-hour photometric precision of 80 ppm (both at V=12). The K2 mission offers long-term, simultaneous optical observation of thousands of objects at a precision far better than is achievable from ground-based telescopes. Ecliptic fields will be observed for approximately 75-days enabling a unique exoplanet survey which fills the gaps in duration and sensitivity between the Kepler and TESS missions, and offers pre-launch exoplanet target identification for JWST transit spectroscopy. Astrophysics observations with K2 will include studies of young open clusters, bright stars, galaxies, supernovae, and asteroseismology.read more
Citations
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Journal ArticleDOI
MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
TL;DR: The Modules for Experiments in Stellar Astrophysics (MESA) Isochrones and Stellar Tracks (MIST) project as mentioned in this paper provides a set of stellar evolutionary tracks and isochrones computed using MESA, a state-of-the-art 1D stellar evolution package.
Journal ArticleDOI
The Occurrence and Architecture of Exoplanetary Systems
TL;DR: A review of the current knowledge of the occurrence of planets around other stars, their orbital distances and eccentricities, the orbital spacings and mutual inclinations in multi-planet systems, the orientation of the host star's rotation axis, and the properties of planets in binary-star systems can be found in this paper.
Journal ArticleDOI
The GALAH survey: scientific motivation
G. M. De Silva,G. M. De Silva,Kenneth C. Freeman,Joss Bland-Hawthorn,Sarah L. Martell,E. Wylie de Boer,Martin Asplund,Stefan Keller,Sanjib Sharma,Daniel B. Zucker,Tomaž Zwitter,Borja Anguiano,Carlos Bacigalupo,Daniel Bayliss,M.A. Beavis,Maria Bergemann,Simon Campbell,Russell D. Cannon,Daniela Carollo,Luca Casagrande,Andrew R. Casey,G. S. Da Costa,Valentina D'Orazi,Valentina D'Orazi,Aaron Dotter,Ly Duong,Alexander Heger,Alexander Heger,Alexander Heger,Michael J. Ireland,Prajwal R. Kafle,Janez Kos,John C. Lattanzio,Geraint F. Lewis,J. Lin,Karin Lind,Ulisse Munari,David M. Nataf,Simon J. O'Toole,Quentin A. Parker,Warren A. Reid,Katharine J. Schlesinger,Andrew I. Sheinis,Jeffrey D. Simpson,Dennis Stello,Yuan-Sen Ting,Gregor Traven,Fred G. Watson,Robert A. Wittenmyer,David Yong,M. Žerjal +50 more
TL;DR: The Galactic Archaeology with HERMES (GALAH) survey is a large high-resolution spectroscopic survey using the newly commissioned High Efficiency and Resolution Multi-element Spectrograph (HERMES) on the Anglo-Australian Telescope as discussed by the authors.
Journal ArticleDOI
Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation
Bill Paxton,Radosław Smolec,Josiah Schwab,A. Gautschy,Lars Bildsten,Lars Bildsten,Matteo Cantiello,Matteo Cantiello,Aaron Dotter,Robert Farmer,Jared A. Goldberg,Adam S. Jermyn,Shashi M. Kanbur,Pablo Marchant,Anne Thoul,Richard H. D. Townsend,William M. Wolf,William M. Wolf,Michael Zhang,Francis Timmes +19 more
TL;DR: In this paper, the capabilities of the open-knowledge software instrument Modules for Experiments in Stellar Astrophysics (MESA) have been updated to improve numerical energy conservation capabilities, including during mass changes.
Journal ArticleDOI
Extreme Water Loss and Abiotic O2 Buildup on Planets Throughout the Habitable Zones of M Dwarfs
Rodrigo Luger,Rory Barnes +1 more
TL;DR: In this paper, the authors show that terrestrial planets in the habitable zones of M dwarfs older than ∼1 Gyr could have been in runaway greenhouses for several hundred million years following their formation due to the star's extended pre-main sequence phase.
References
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WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars ,
David R. Anderson,A. Collier Cameron,Coel Hellier,Monika Lendl,Tim Lister,Pierre F. L. Maxted,Didier Queloz,Barry Smalley,Alexis M. S. Smith,Amaury H. M. J. Triaud,Duncan A. Brown,Michaël Gillon,M. Neveu-VanMalle,Francesco Pepe,Don Pollacco,Damien Ségransan,Stéphane Udry,Richard G. West,Peter J. Wheatley +18 more
TL;DR: WASP-20b and WASP-28b were discovered in this article along with measurements of their sky-projected orbital obliquities, which is consistent with the hypothesis that close-in giant planets are scattered into eccentric orbits with random alignments, which are then circularised and aligned with their stars' spins via tidal dissipation.
Journal ArticleDOI
WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars
David R. Anderson,A. Collier Cameron,Coel Hellier,Monika Lendl,Tim Lister,Pierre F. L. Maxted,Didier Queloz,Barry Smalley,Alexis M. S. Smith,Amaury H. M. J. Triaud,Duncan A. Brown,Michaël Gillon,M. Neveu-VanMalle,Francesco Pepe,Don Pollacco,Damien Ségransan,Stéphane Udry,Richard G. West,Peter J. Wheatley +18 more
TL;DR: WASP-20b and WASP-28b were discovered in this article along with measurements of their sky-projected orbital obliquities, consistent with the hypothesis that close-in giant planets are scattered into eccentric orbits with random alignments, which are then circularised and aligned with their stars' spins via tidal dissipation.
Posted Content
New Uses for the Kepler Telescope: A Survey of the Ecliptic Plane For Transiting Planets and Star Formation
Charles Beichman,David R. Ciardi,Rachel Akeson,Peter Plavchan,Steve B. Howell,J. L. Christiansen,Stephen R. Kane,Ann Marie Cody,John Stauffer,Gautam Vasisht,Kevin R. Covey +10 more
TL;DR: In this paper, the authors call for the use of Kepler to conduct a survey in the ecliptic plane to search for planet transits around stars at high galactic latitudes and to study star forming regions to investigate physics of very young stars.
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