C
Charles A. Beichman
Researcher at California Institute of Technology
Publications - 113
Citations - 4847
Charles A. Beichman is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Planet & Exoplanet. The author has an hindex of 37, co-authored 113 publications receiving 4364 citations. Previous affiliations of Charles A. Beichman include Max Planck Society & NASA Exoplanet Science Institute.
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Journal ArticleDOI
HST and Spitzer Observations of the HD 207129 Debris Ring
John Krist,Karl R. Stapelfeldt,Geoffrey Bryden,George H. Rieke,Kate Y. L. Su,Christine Chen,Charles A. Beichman,Dean C. Hines,Luisa Rebull,Angelle Tanner,D. E. Trilling,Mark Clampin,Andras Gaspar +12 more
TL;DR: A debris ring around the star HD 207129 (G0V; d = 16.0 pc) has been imaged in scattered visible light with the ACS coronagraph on the Hubble Space Telescope and in thermal emission using MIPS on the Spitzer Space Telescope at 70 microns and 160 microns (unresolved) as mentioned in this paper.
Journal ArticleDOI
EPIC 246851721 b: A Tropical Jupiter Transiting a Rapidly Rotating Star in a Well-Aligned Orbit
Liang Yu,George Zhou,Joseph E. Rodriguez,Chelsea X. Huang,Andrew Vanderburg,Samuel N. Quinn,B. Scott Gaudi,Charles A. Beichman,Perry Berlind,Allyson Bieryla,Michael L. Calkins,David R. Ciardi,Ian J. M. Crossfield,Jason D. Eastman,Gilbert A. Esquerdo,David W. Latham,Keivan G. Stassun,Steven Villanueva +17 more
Abstract: We report the discovery of EPIC 246851721 b, a "tropical" Jupiter in a 6.18-day orbit around the bright ($V=11.439$) star EPIC 246851721 (TYC 1283-739-1). We present a detailed analysis of the system using $K2$ and ground-based photometry, radial velocities, Doppler tomography and adaptive optics imaging. From our global models, we infer that the host star is a rapidly rotating ($v \sin i = 74.92 $ km s$^{-1}$) F dwarf with $T_\mathrm{eff}$ = 6202 K, $R_\star = 1.586 \ R_\odot$ and $M_\star= 1.317 \ M_\odot$. EPIC 246851721 b has a radius of $1.051 \pm 0.044 R_J$, and a mass of 3.0$^{+1.1}_{-1.2} M_J$ . Doppler tomography reveals an aligned spin-orbit geometry, with a projected obliquity of $-1.47^{\circ\ +0.87}_{\ -0.86}$, making EPIC 246851721 the fourth hottest star to host a Jovian planet with $P > 5$ days and a known obliquity. Using quasi-periodic signatures in its light curve that appear to be spot modulations, we estimate the star's rotation period, and thereby infer the true obliquity of the system to be $3.7^{\circ\ +3.7}_{\ -1.8}$. We argue that this near-zero obliquity is likely to be primordial rather than a result of tidal damping. The host star also has a bound stellar companion, a $0.4 \ M_\odot$ M dwarf at a projected separation of 2100 AU, but the companion is likely incapable of emplacing EPIC 246851721 b in its current orbit via high eccentricity Kozai-Lidov migration.
Journal ArticleDOI
The PTF Orion Project: a Possible Planet Transiting a T-Tauri Star
Julian C. van Eyken,David R. Ciardi,Kaspar von Braun,Stephen R. Kane,Peter Plavchan,Chad F. Bender,Timothy M. Brown,Justin R. Crepp,Benjamin J. Fulton,Andrew W. Howard,Steve B. Howell,Suvrath Mahadevan,Geoffrey W. Marcy,Avi Shporer,Paula Szkody,Rachel Akeson,Charles A. Beichman,Andrew F. Boden,Dawn M. Gelino,D. W. Hoard,Solange V. Ramirez,Luisa Rebull,John R. Stauffer,Joshua S. Bloom,S. Bradley Cenko,Mansi M. Kasliwal,Shrinivas R. Kulkarni,Nicholas M. Law,Peter Nugent,Eran O. Ofek,Dovi Poznanski,Robert M. Quimby,Richard Walters,Carl J. Grillmair,Russ R. Laher,David Levitan,Branimir Sesar,Jason Surace +37 more
TL;DR: In this paper, the authors report observations of a possible young transiting planet orbiting a previously known weak-lined T-Tauri star in the 7-10 Myr old Orion-OB1a/25-Ori region.
Journal ArticleDOI
High precision astrometry mission for the detection and characterization of nearby habitable planetary systems with the Nearby Earth Astrometric Telescope (NEAT)
Fabien Malbet,Alain Léger,Michael Shao,Renaud Goullioud,P. O. Lagage,Anthony G. A. Brown,Christophe Cara,Gilles Durand,Carlos Eiroa,Philippe Feautrier,Björn Jakobsson,Emmanuel Hinglais,Lisa Kaltenegger,Lucas Labadie,Anne-Marie Lagrange,Jacques Laskar,René Liseau,Jonathan I. Lunine,Jesus Maldonado,Manuel Mercier,Christoph Mordasini,Didier Queloz,Andreas Quirrenbach,Alessandro Sozzetti,Wesley A. Traub,Olivier Absil,Yann Alibert,Yann Alibert,Alexandre Humberto Andrei,Frédéric Arenou,Charles A. Beichman,Alain Chelli,Charles S. Cockell,Gilles Duvert,Thierry Forveille,Paulo J. V. Garcia,David Hobbs,Alberto Krone-Martins,Alberto Krone-Martins,Helmut Lammer,N. Meunier,Stefano Minardi,André Moitinho de Almeida,Nicolas Rambaux,Sean N. Raymond,Huub Röttgering,Johannes Sahlmann,Peter A. Schuller,Damien Ségransan,Franck Selsis,Jean Surdej,Eva Villaver,Glenn J. White,Glenn J. White,Hans Zinnecker +54 more
TL;DR: The Nearby Earth Astrometric Telescope (NEAT) as discussed by the authors is designed to carry out space-borne extremely high-precision astrometric measurements sufficient to detect dynamical effects due to orbiting planets of mass even lower than Earth's around the nearest stars.
Posted ContentDOI
KMT-2018-BLG-0029Lb: A Very Low Mass-Ratio Spitzer Microlens Planet
Andrew Gould,Yoon-Hyun Ryu,Sebastiano Calchi Novati,Weicheng Zang,Michael D. Albrow,Sun-Ju Chung,Cheongho Han,Kyu-Ha Hwang,Youn Kil Jung,In-Gu Shin,Yossi Shvartzvald,Jennifer C. Yee,Sang-Mok Cha,Dong-Jin Kim,Hyoun-Woo Kim,Seung-Lee Kim,Chung-Uk Lee,Dong-Joo Lee,Yongseok Lee,Byeong-Gon Park,Richard W. Pogge,Charles A. Beichman,Geoff Bryden,Sean Carey,B. Scott Gaudi,Calen B. Henderson,Wei Zhu,Pascal Fouqué,Matthew T. Penny,Andreea Petric,Todd Burdullis,Shude Mao +31 more
TL;DR: KMT-2018-BLG-0029Lb has the lowest planet-host mass ratio of any microlensing planet to date by more than a factor of two as discussed by the authors.