C
Christoffer Karoff
Researcher at Aarhus University
Publications - 209
Citations - 14969
Christoffer Karoff is an academic researcher from Aarhus University. The author has contributed to research in topics: Stars & Asteroseismology. The author has an hindex of 70, co-authored 204 publications receiving 14147 citations. Previous affiliations of Christoffer Karoff include University of Birmingham & German Aerospace Center.
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Journal ArticleDOI
Masses, Radii, and Orbits of Small Kepler Planets: The Transition From Gaseous to Rocky Planets
Geoffrey W. Marcy,Howard Isaacson,Andrew W. Howard,Jason F. Rowe,Jon M. Jenkins,Stephen T. Bryson,David W. Latham,Steve B. Howell,Thomas N. Gautier,Natalie M. Batalha,Leslie A. Rogers,David R. Ciardi,Debra A. Fischer,Ronald L. Gilliland,Hans Kjeldsen,Jørgen Christensen-Dalsgaard,Jørgen Christensen-Dalsgaard,Daniel Huber,William J. Chaplin,William J. Chaplin,Sarbani Basu,Lars A. Buchhave,Lars A. Buchhave,Samuel N. Quinn,William J. Borucki,David G. Koch,Roger C. Hunter,Douglas A. Caldwell,Jeffrey Van Cleve,Rea Kolbl,Lauren M. Weiss,Erik A. Petigura,Sara Seager,Timothy D. Morton,John Asher Johnson,Sarah Ballard,Christopher J. Burke,William D. Cochran,Michael Endl,Phillip J. MacQueen,Mark E. Everett,Jack J. Lissauer,Eric B. Ford,Guillermo Torres,Francois Fressin,Timothy M. Brown,Jason H. Steffen,David Charbonneau,Gibor Basri,Dimitar Sasselov,Joshua N. Winn,Roberto Sanchis-Ojeda,Jessie L. Christiansen,Elisabeth R. Adams,Christopher E. Henze,Andrea K. Dupree,Daniel C. Fabrycky,Jonathan J. Fortney,Jill Tarter,Matthew J. Holman,Peter Tenenbaum,Avi Shporer,Philip W. Lucas,William F. Welsh,Jerome A. Orosz,Timothy R. Bedding,Tiago L. Campante,Tiago L. Campante,Guy R. Davies,Guy R. Davies,Y. P. Elsworth,Y. P. Elsworth,Rasmus Handberg,Rasmus Handberg,Saskia Hekker,Saskia Hekker,Christoffer Karoff,Steven D. Kawaler,Mikkel N. Lund,Mia S. Lundkvist,Travis S. Metcalfe,Andrea Miglio,Andrea Miglio,V. Silva Aguirre,Dennis Stello,Timothy R. White,Alan P. Boss,Edna DeVore,Alan Gould,Andrej Prsa,Eric Agol,Thomas Barclay,Jeffrey L. Coughlin,Erik Brugamyer,Fergal Mullally,Elisa V. Quintana,Martin Still,Susan E. Thompson,David Morrison,Joseph D. Twicken,Jean-Michel Desert,J. A. Carter,Justin R. Crepp,Guillaume Hébrard,Guillaume Hébrard,Alexandre Santerne,Alexandre Santerne,Claire Moutou,Charlie Sobeck,Douglas Hudgins,Michael R. Haas,Paul Robertson,Paul Robertson,Jorge Lillo-Box,David Barrado +114 more
TL;DR: In this paper, the masses, sizes, and orbits of the planets orbiting 22 Kepler stars were reported, including 42 detected through transits and 7 revealed by precise Doppler measurements of the host stars.
Journal ArticleDOI
Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets
Geoffrey W. Marcy,Howard Isaacson,Andrew W. Howard,Jason F. Rowe,Jon M. Jenkins,Stephen T. Bryson,David W. Latham,Steve B. Howell,Thomas N. Gautier,Natalie M. Batalha,Leslie A. Rogers,David R. Ciardi,Debra A. Fischer,Ronald L. Gilliland,Hans Kjeldsen,Jørgen Christensen-Dalsgaard,Daniel Huber,William J. Chaplin,Sarbani Basu,Lars A. Buchhave,Samuel N. Quinn,William J. Borucki,David G. Koch,Roger C. Hunter,Douglas A. Caldwell,Jeffrey Van Cleve,Rea Kolbl,Lauren M. Weiss,Erik A. Petigura,Sara Seager,Timothy D. Morton,John Asher Johnson,Sarah Ballard,Christopher J. Burke,William D. Cochran,Michael Endl,Phillip J. MacQueen,Mark E. Everett,Jack J. Lissauer,Eric B. Ford,Guillermo Torres,Francois Fressin,Timothy M. Brown,Jason H. Steffen,David Charbonneau,Gibor Basri,Dimitar Sasselov,Joshua N. Winn,Roberto Sanchis-Ojeda,Jessie L. Christiansen,Elisabeth R. Adams,Christopher E. Henze,Andrea K. Dupree,Daniel C. Fabrycky,Jonathan J. Fortney,Jill Tarter,Matthew J. Holman,Peter Tenenbaum,Avi Shporer,Philip W. Lucas,William F. Welsh,Jerome A. Orosz,Timothy R. Bedding,Tiago L. Campante,Guy R. Davies,Yvonne Elsworth,Rasmus Handberg,Saskia Hekker,Christoffer Karoff,Steven D. Kawaler,Mikkel N. Lund,M. Lundkvist,Travis S. Metcalfe,Andrea Miglio,V. Silva Aguirre,Dennis Stello,Timothy R. White,Alan P. Boss,Edna DeVore,Alan Gould,Andrej Prsa,Eric Agol,Thomas Barclay,Jeffrey L. Coughlin,Erik Brugamyer,Fergal Mullally,Elisa V. Quintana,Martin Still,Susan E. hompson,David Morrison,Joseph D. Twicken,Jean-Michel Desert,J. A. Carter,Justin R. Crepp,Guillaume Hébrard,Alexandre Santerne,Claire Moutou,Charlie Sobeck,Douglas Hudgins,Michael R. Haas,Paul Robertson,Jorge Lillo-Box,David Barrado +102 more
TL;DR: In this article, the masses, sizes, and orbits of the planets orbiting 22 Kepler stars were reported, including 49 candidates detected through transits and 7 revealed by precise Doppler measurements of the host stars.
Journal ArticleDOI
Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology
Silva Aguirre,Guy R. Davies,Guy R. Davies,Sarbani Basu,Jørgen Christensen-Dalsgaard,O. L. Creevey,O. L. Creevey,Travis S. Metcalfe,Travis S. Metcalfe,Timothy R. Bedding,Timothy R. Bedding,Luca Casagrande,Rasmus Handberg,Rasmus Handberg,Mikkel N. Lund,Mikkel N. Lund,Poul Nissen,William J. Chaplin,William J. Chaplin,Daniel Huber,Daniel Huber,Daniel Huber,Aldo Serenelli,Dennis Stello,Dennis Stello,V. Van Eylen,Tiago L. Campante,Tiago L. Campante,Yvonne Elsworth,Yvonne Elsworth,Ronald L. Gilliland,Saskia Hekker,Christoffer Karoff,Steven D. Kawaler,Hans Kjeldsen,Mia S. Lundkvist +35 more
TL;DR: In this article, the authors present a study of 33 planet-candidate host stars for which asteroseismic observations have sufficiently high signal-to-noise ratio to allow extraction of individual pulsation frequencies.
Journal ArticleDOI
Asteroseismic fundamental properties of solar-type stars observed by the nasa kepler mission
William J. Chaplin,William J. Chaplin,Sarbani Basu,Daniel Huber,Aldo Serenelli,Luca Casagrande,V. Silva Aguirre,Warrick H. Ball,Warrick H. Ball,O. L. Creevey,O. L. Creevey,Laurent Gizon,Laurent Gizon,Rasmus Handberg,Rasmus Handberg,Christoffer Karoff,R. Lutz,R. Lutz,J. P. Marques,J. P. Marques,Andrea Miglio,Andrea Miglio,Dennis Stello,Dennis Stello,M. D. Suran,D. Pricopi,Travis S. Metcalfe,Travis S. Metcalfe,Mário J. P. F. G. Monteiro,Joanna Molenda-Żakowicz,Thierry Appourchaux,Jørgen Christensen-Dalsgaard,Yvonne Elsworth,Yvonne Elsworth,Rafael A. García,G. Houdek,Hans Kjeldsen,Alfio Bonanno,Tiago L. Campante,Tiago L. Campante,Enrico Corsaro,Enrico Corsaro,Patrick Gaulme,Saskia Hekker,Saskia Hekker,Savita Mathur,Savita Mathur,Benoit Mosser,Clara Régulo,Clara Régulo,D. Salabert +50 more
TL;DR: In this article, a grid-based analysis was used to estimate the fundamental properties of more than 500 main-sequence and sub-giant stars using the NASA Kepler data obtained during the first 10 months of Kepler science operations, when these solar-type targets were observed for one month each in survey mode.
Journal ArticleDOI
Ensemble Asteroseismology of Solar-Type Stars with the NASA Kepler Mission
William J. Chaplin,Hans Kjeldsen,Jørgen Christensen-Dalsgaard,Sarbani Basu,Andrea Miglio,T. Appourchaux,Timothy R. Bedding,Yvonne Elsworth,Rafael A. García,Ronald L. Gilliland,L. Girardi,G. Houdek,Christoffer Karoff,S. D. Kawaler,Travis S. Metcalfe,Joanna Molenda-Żakowicz,Mário J. P. F. G. Monteiro,Michael Thompson,Graham A. Verner,Jérôme Ballot,Alfio Bonanno,I. M. Brandão,A.-M. Broomhall,H. Bruntt,Tiago L. Campante,Enrico Corsaro,Orlagh Creevey,Orlagh Creevey,G. Doğan,L. Esch,Ning Gai,Patrick Gaulme,Steven J. Hale,Rasmus Handberg,Saskia Hekker,Daniel Huber,Antonio Jiménez,Antonio Jiménez,Savita Mathur,Anwesh Mazumdar,B. Mosser,Roger New,Marc H. Pinsonneault,D. Pricopi,P.-O. Quirion,Clara Régulo,Clara Régulo,D. Salabert,D. Salabert,Aldo Serenelli,V. Silva Aguirre,S. G. Sousa,Dennis Stello,Ian R. Stevens,M. D. Suran,K. Uytterhoeven,Timothy R. White,William J. Borucki,Timothy M. Brown,Jon M. Jenkins,Karen Kinemuchi,J. Van Cleve,Todd C. Klaus +62 more
TL;DR: It is found that the distribution of observed masses of these stars shows intriguing differences to predictions from models of synthetic stellar populations in the Galaxy.