Zobrazeno 101 - 110
of 167
pro vyhledávání: '"Howard Isaacson"'
Autor:
Howard Isaacson, Daniel C. Fabrycky, S. M. Mills, Eric B. Ford, Erik A. Petigura, Cezary Migaszewski
Publikováno v:
Nature. 533(7604)
Surveys have revealed many multi-planet systems containing super-Earths and Neptunes in orbits of a few days to a few months. There is debate whether in situ assembly or inward migration is the dominant mechanism of the formation of such planetary sy
Autor:
Geoffrey W. Marcy, Howard Isaacson, Corinne Vassallo, Benjamin T. Montet, Philip S. Muirhead, Ashley Villar, Christoph Baranec, Nicholas M. Law, John Asher Johnson, Reed Riddle, Andrew W. Howard
We present an updated analysis of LHS 6343, a triple system in the Kepler field which consists of a brown dwarf transiting one member of a widely-separated M+M binary system. By analyzing the full Kepler dataset and 34 Keck/HIRES radial velocity obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a147bebc1b9e92c034b554b04d4a15f
Autor:
Andrew W. Howard, Joshua N. Winn, Emmanuel Jehin, Matthew J. Holman, Monika Lendl, Chelsea X. Huang, Simon Albrecht, Fei Dai, Benjamin T. Montet, Liang Yu, Howard Isaacson, Saul Rappaport, Roberto Sanchis-Ojeda, Allyson Bieryla, Philip S. Muirhead, Lynne A. Hillenbrand, Michaël Gillon, Amaury H. M. J. Triaud, Laetitia Delrez
Publikováno v:
Yu, L, Winn, J N, Gillon, M, Albrecht, S, Rappaport, S, Bieryla, A, Dai, F, Delrez, L, Hillenbrand, L, Holman, M J, Howard, A W, Huang, C X, Isaacson, H, Jehin, E, Lendl, M, Montet, B T, Muirhead, P, Sanchis-Ojeda, R & Triaud, A H M J 2015, ' Tests of the planetary hypothesis for PTFO 8-8695b ', Astrophysical Journal, vol. 812, no. 1 . https://doi.org/10.1088/0004-637X/812/1/48
The T Tauri star PTFO 8-8695 exhibits periodic fading events that have been interpreted as the transits of a giant planet on a precessing orbit. Here we present three tests of the planet hypothesis. First, we sought evidence for the secular changes i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4428ffc08170f5227ec2dc972aeeb241
Autor:
Jason T. Wright, Gregory W. Henry, John Asher Johnson, Howard Isaacson, Debra A. Fischer, Geoffrey W. Marcy, Chris McCarthy
Publikováno v:
The Astrophysical Journal. 652:1724-1728
We report the detection of a Jupiter-mass planet in a 6.838 day orbit around the 1.28 solar mass subgiant HD 185269. The eccentricity of HD 185269b (e = 0.30) is unusually large compared to other planets within 0.1 AU of their stars. Photometric obse
Autor:
Pascal Petit, Michael H. Williamson, Svetlana V. Berdyugina, Debra A. Fischer, M. Muñoz, Stephen C. Marsden, M. Semel, J. A. Eaton, M. I. Ratner, Howard Isaacson, Brad D. Carter, Jean-François Donati, Ilya Ilyin
Publikováno v:
The Astrophysical Journal. 634:L173-L176
We present the first detection of the secondary of the spectroscopic binary system IM Pegasi (HR 8703), the guide star for the NASA-Stanford relativity gyroscope mission Gravity Probe B. In support of this mission, high-resolution echelle spectra of
Autor:
Terese T. Hansen, Michael Endl, Lars A. Buchhave, David W. Latham, David R. Ciardi, Caroline Caldwell, Natalie M. Batalha, Martin Bizzarro, Stephen T. Bryson, Jason F. Rowe, Anders Johansen, Gilbert A. Esquerdo, John C. Geary, Philip W. Lucas, Geoffrey W. Marcy, Ronald L. Gilliland, Martin Still, Samuel N. Quinn, Avi Shporer, William D. Cochran, Robert P. Stefanik, John B. Laird, Eric B. Ford, Jon A. Morse, Erik Brugamyer, Paul Robertson, Howard Isaacson, Guillermo Torres, William J. Borucki
Publikováno v:
Nature
The abundance of heavy elements (metallicity) in the photospheres of stars similar to the Sun provides a 'fossil' record of the chemical composition of the initial protoplanetary disk. Metal-rich stars are much more likely to harbour gas giant planet
Autor:
Joshua N. Winn, Lea A. Hirsch, John Asher Johnson, Leslie A. Rogers, Phillip A. Cargile, Leslie Hebb, Erik A. Petigura, Timothy D. Morton, Ian J. M. Crossfield, Benjamin J. Fulton, Geoffrey W. Marcy, Andrew W. Howard, Evan Sinukoff, Lauren M. Weiss, Howard Isaacson
Publikováno v:
The Astronomical Journal. 154:107
The California-Kepler Survey (CKS) is an observational program to improve our knowledge of the properties of stars found to host transiting planets by NASA's Kepler Mission. The improvement stems from new high-resolution optical spectra obtained usin
Autor:
Lauren M. Weiss, Katherine M. Deck, Evan Sinukoff, Erik A. Petigura, Eric Agol, Eve J. Lee, Juliette C. Becker, Andrew W. Howard, Howard Isaacson, Ian J. M. Crossfield, Benjamin J. Fulton, Lea Hirsch, Björn Benneke
Publikováno v:
The Astronomical Journal. 153:265
Measuring precise planet masses, densities, and orbital dynamics in individual planetary systems is an important pathway toward understanding planet formation. The WASP-47 system has an unusual architecture that motivates a complex formation theory.
Autor:
Gil Esquerdo, M. de Val-Borro, Andrew W. Howard, Z. Csubry, Pál Sári, G. W. Marcy, Gáspár Á. Bakos, Robert W. Noyes, Perry Berlind, Mike Calkins, J. Lazar, B. Béky, Allyson Bieryla, I. Papp, Tamás Kovács, Kaloyan Penev, Géza Kovács, Joel D. Hartman, Lars A. Buchhave, John Asher Johnson, Howard Isaacson, Guillermo Torres, Waqas Bhatti, D. W. Latham, E. E. Falco
We report the discovery of HAT-P-54b, a planet transiting a late K dwarf star in field 0 of the NASA K2 mission. We combine ground-based photometric light curves with radial velocity measurements to determine the physical parameters of the system. HA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19661f321369de69c78fd64ebafcc3d8
http://arxiv.org/abs/1404.4417
http://arxiv.org/abs/1404.4417
Autor:
Eric Agol, Avi Shporer, Jean-Michel Desert, Andrew W. Howard, Joseph O'Rourke, Kamen O. Todorov, Nicolas B. Cowan, Ming Zhao, Adam P. Showman, Jonathan J. Fortney, Heather A. Knutson, Adam Burrows, Gyula M. Szabó, Nikole K. Lewis, Howard Isaacson
Kepler-13Ab (= KOI-13.01) is a unique transiting hot Jupiter. It is one of very few known short-period planets orbiting a hot A-type star, making it one of the hottest planets currently known. The availability of Kepler data allows us to measure the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47e08734709bbec0091caa03797e0458
http://arxiv.org/abs/1403.6831
http://arxiv.org/abs/1403.6831