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batman: BAsic Transit Model cAlculatioN in Python
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TLDR
Batman as discussed by the authors is a Python package for modeling exoplanet transit light curves that uses C extension modules to speed up model calculation and is parallelized with OpenMP, which can calculate one million quadratic limb-darkened models in 30 seconds with a single 1.7 GHz Intel Core i5 processor.Abstract:
I introduce batman, a Python package for modeling exoplanet transit light curves. The batman package supports calculation of light curves for any radially symmetric stellar limb darkening law, using a new integration algorithm for models that cannot be quickly calculated analytically. The code uses C extension modules to speed up model calculation and is parallelized with OpenMP. For a typical light curve with 100 data points in transit, batman can calculate one million quadratic limb-darkened models in 30 seconds with a single 1.7 GHz Intel Core i5 processor. The same calculation takes seven minutes using the four-parameter nonlinear limb darkening model (computed to 1 ppm accuracy). Maximum truncation error for integrated models is an input parameter that can be set as low as 0.001 ppm, ensuring that the community is prepared for the precise transit light curves we anticipate measuring with upcoming facilities. The batman package is open source and publicly available at https://github.com/lkreidberg/batman. Subject headings: methods: data analysis – methods: numericalread more
Citations
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Journal ArticleDOI
Helium in the eroding atmosphere of an exoplanet
Jessica Spake,David K. Sing,David K. Sing,Thomas M. Evans,Antonija Oklopčić,Vincent Bourrier,Laura Kreidberg,Benjamin V. Rackham,Jonathan Irwin,David Ehrenreich,Aurélien Wyttenbach,Hannah R. Wakeford,Yifan Zhou,Katy L. Chubb,Nikolay Nikolov,Jayesh M. Goyal,Gregory W. Henry,Michael H. Williamson,Sarah D. Blumenthal,David R. Anderson,Coel Hellier,David Charbonneau,Stéphane Udry,Nikku Madhusudhan +23 more
TL;DR: A detection of helium absorption at 10,833 Å on the exoplanet WASP-107b reveals that its atmosphere is extended and eroding, and demonstrates a new way to study upper exoplanetary atmospheres.
Journal ArticleDOI
Global Climate and Atmospheric Composition of the Ultra-hot Jupiter WASP-103b from HST and Spitzer Phase Curve Observations
Laura Kreidberg,Michael R. Line,Vivien Parmentier,Kevin B. Stevenson,Tom Louden,Mickael Bonnefoy,Mickael Bonnefoy,Jacqueline K. Faherty,Gregory W. Henry,Michael H. Williamson,Keivan G. Stassun,Thomas G. Beatty,Jacob L. Bean,Jonathan J. Fortney,Adam P. Showman,Jean-Michel Desert,Jacob Arcangeli +16 more
TL;DR: In this article, the authors presented thermal phase curve measurements for the hot Jupiter WASP-103b observed with the Hubble/WFC3 and Spitzer/IRAC spectra.
Journal ArticleDOI
The Next Generation Transit Survey (NGTS)
Peter J. Wheatley,Richard G. West,Michael R. Goad,James S. Jenkins,Don Pollacco,Didier Queloz,Heike Rauer,Heike Rauer,Stéphane Udry,Christopher A. Watson,Bruno Chazelas,Philipp Eigmüller,Gregory Lambert,L. Genolet,James McCormac,Simon R. Walker,David J. Armstrong,Daniel Bayliss,Joao Bento,Joao Bento,François Bouchy,Matthew R. Burleigh,Juan Cabrera,Sarah L. Casewell,Alexander Chaushev,Paul Chote,Szilard Csizmadia,Anders Erikson,Francesca Faedi,E. Foxell,Boris T. Gänsicke,Edward Gillen,Andrew Grange,Maximilian N. Günther,Simon Hodgkin,James A. G. Jackman,Andrés Jordán,Andrés Jordán,Andrés Jordán,Tom Louden,Lionel Metrailler,Maximiliano Moyano,Louise D. Nielsen,Hugh P. Osborn,Katja Poppenhaeger,Roberto Raddi,Liam Raynard,Alexis M. S. Smith,M. Soto,Ruth Titz-Weider +49 more
TL;DR: The Next Generation Transit Survey (NGTS) as discussed by the authors is a ground-based project searching for transiting exoplanets orbiting bright stars, which is designed to achieve higher photometric precision and hence find smaller planets than have previously been detected from the ground.
Journal ArticleDOI
TESS Discovery of a Transiting Super-Earth in the pi Mensae System
Chelsea X. Huang,Jennifer Burt,Andrew Vanderburg,Maximilian N. Günther,Avi Shporer,Jason Dittmann,Joshua N. Winn,Robert A. Wittenmyer,Lizhou Sha,Stephen R. Kane,George R. Ricker,Roland Vanderspek,David W. Latham,Sara Seager,Jon M. Jenkins,Douglas A. Caldwell,Douglas A. Caldwell,Karen A. Collins,Natalia Guerrero,Jeffrey C. Smith,Samuel N. Quinn,Stéphane Udry,Francesco Pepe,François Bouchy,Damien Ségransan,Christophe Lovis,David Ehrenreich,Maxime Marmier,Michel Mayor,B. Wohler,B. Wohler,Kari Haworth,Edward H. Morgan,Michael Fausnaugh,David R. Ciardi,Jessie L. Christiansen,David Charbonneau,Diana Dragomir,Drake Deming,Ana Glidden,Alan M. Levine,Peter R. McCullough,Liang Yu,Norio Narita,Tam Nguyen,Timothy D. Morton,Joshua Pepper,A. Pál,A. Pál,A. Pál,Joseph E. Rodriguez,Keivan G. Stassun,Guillermo Torres,Alessandro Sozzetti,John P. Doty,Jørgen Christensen-Dalsgaard,Gregory Laughlin,Mark Clampin,Jacob L. Bean,Lars A. Buchhave,Gáspár Á. Bakos,Gáspár Á. Bakos,Bun'ei Sato,Shigeru Ida,Lisa Kaltenegger,Enric Palle,Dimitar Sasselov,R. P. Butler,Jack J. Lissauer,Jian Ge,S. A. Rinehart +70 more
TL;DR: The detection of a transiting planet around π Men (HD 39091), using data from the Transiting Exoplanet Survey Satellite (TESS), is reported, confirming the existence of the planet and leading to a mass determination of 4.82±0.85 M ⊕.
Journal ArticleDOI
No Thermal Inversion and a Solar Water Abundance for the Hot Jupiter HD209458b from HST WFC3 Emission Spectroscopy
Michael R. Line,Kevin B. Stevenson,Jacob L. Bean,Jean-Michel Desert,Jonathan J. Fortney,Laura Kreidberg,Nikku Madhusudhan,Adam P. Showman,Hannah Diamond-Lowe +8 more
TL;DR: In this paper, high precision HST WFC3 observations of the dayside emission spectrum of the hot Jupiter HD209458b were used to detect a water band in absorption at 6.2 sigma confidence.
References
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Journal ArticleDOI
A Detection of Water in the Transmission Spectrum of the Hot Jupiter WASP-12b and Implications for its Atmospheric Composition
Laura Kreidberg,Michael R. Line,Jacob L. Bean,Kevin B. Stevenson,Jean-Michel Desert,Nikku Madhusudhan,Jonathan J. Fortney,Joanna K. Barstow,Gregory W. Henry,Michael H. Williamson,Adam P. Showman +10 more
TL;DR: In this article, a near-infrared transmission spectrum for WASP-12b based on six transit observations with the Hubble Space Telescope/Wide Field Camera 3 (HST-WFC) was reported.
Journal ArticleDOI
Helium in the eroding atmosphere of an exoplanet
Jessica Spake,David K. Sing,David K. Sing,Thomas M. Evans,Antonija Oklopčić,Vincent Bourrier,Laura Kreidberg,Benjamin V. Rackham,Jonathan Irwin,David Ehrenreich,Aurélien Wyttenbach,Hannah R. Wakeford,Yifan Zhou,Katy L. Chubb,Nikolay Nikolov,Jayesh M. Goyal,Gregory W. Henry,Michael H. Williamson,Sarah D. Blumenthal,David R. Anderson,Coel Hellier,David Charbonneau,Stéphane Udry,Nikku Madhusudhan +23 more
TL;DR: A detection of helium absorption at 10,833 Å on the exoplanet WASP-107b reveals that its atmosphere is extended and eroding, and demonstrates a new way to study upper exoplanetary atmospheres.
Journal ArticleDOI
197 candidates and 104 validated planets in K2's first five fields
Ian J. M. Crossfield,Ian J. M. Crossfield,David R. Ciardi,Erik A. Petigura,Evan Sinukoff,Joshua E. Schlieder,Joshua E. Schlieder,Andrew W. Howard,Charles A. Beichman,Howard Isaacson,Courtney D. Dressing,Jessie L. Christiansen,Benjamin J. Fulton,Sébastien Lépine,Lauren M. Weiss,Lea A. Hirsch,John H. Livingston,Christoph Baranec,Nicholas M. Law,Reed Riddle,Carl Ziegler,Steve B. Howell,Elliott P. Horch,Mark E. Everett,Johanna Teske,Arturo O. Martinez,Arturo O. Martinez,Christian Obermeier,Björn Benneke,Nic Scott,Niall R. Deacon,Kimberly M. Aller,Brad M. S. Hansen,Luigi Mancini,S. Ciceri,S. Ciceri,Rafael Brahm,Rafael Brahm,Andrés Jordán,Andrés Jordán,Heather A. Knutson,Thomas Henning,M. Bonnefoy,M. Bonnefoy,Michael C. Liu,Justin R. Crepp,Joshua D. Lothringer,Phil Hinz,Vanessa P. Bailey,Vanessa P. Bailey,Andrew J. Skemer,Andrew J. Skemer,Denis Defrere +52 more
TL;DR: In this article, the first year of the NASA K2 mission (Campaigns 0-4) was used to discover 197 candidates for Earth-like planets, with the results of an intensive program of photometric analyses, stellar spectroscopy, high-resolution imaging and statistical validation.
Journal ArticleDOI
Global Climate and Atmospheric Composition of the Ultra-hot Jupiter WASP-103b from HST and Spitzer Phase Curve Observations
Laura Kreidberg,Michael R. Line,Vivien Parmentier,Kevin B. Stevenson,Tom Louden,Mickael Bonnefoy,Mickael Bonnefoy,Jacqueline K. Faherty,Gregory W. Henry,Michael H. Williamson,Keivan G. Stassun,Thomas G. Beatty,Jacob L. Bean,Jonathan J. Fortney,Adam P. Showman,Jean-Michel Desert,Jacob Arcangeli +16 more
TL;DR: In this article, the authors presented thermal phase curve measurements for the hot Jupiter WASP-103b observed with the Hubble/WFC3 and Spitzer/IRAC spectra.
Journal ArticleDOI
The Next Generation Transit Survey (NGTS)
Peter J. Wheatley,Richard G. West,Michael R. Goad,James S. Jenkins,Don Pollacco,Didier Queloz,Heike Rauer,Heike Rauer,Stéphane Udry,Christopher A. Watson,Bruno Chazelas,Philipp Eigmüller,Gregory Lambert,L. Genolet,James McCormac,Simon R. Walker,David J. Armstrong,Daniel Bayliss,Joao Bento,Joao Bento,François Bouchy,Matthew R. Burleigh,Juan Cabrera,Sarah L. Casewell,Alexander Chaushev,Paul Chote,Szilard Csizmadia,Anders Erikson,Francesca Faedi,E. Foxell,Boris T. Gänsicke,Edward Gillen,Andrew Grange,Maximilian N. Günther,Simon Hodgkin,James A. G. Jackman,Andrés Jordán,Andrés Jordán,Andrés Jordán,Tom Louden,Lionel Metrailler,Maximiliano Moyano,Louise D. Nielsen,Hugh P. Osborn,Katja Poppenhaeger,Roberto Raddi,Liam Raynard,Alexis M. S. Smith,M. Soto,Ruth Titz-Weider +49 more
TL;DR: The Next Generation Transit Survey (NGTS) as discussed by the authors is a ground-based project searching for transiting exoplanets orbiting bright stars, which is designed to achieve higher photometric precision and hence find smaller planets than have previously been detected from the ground.
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