Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 7 of 7
Full-Text Articles in Physical Sciences and Mathematics
On The Stellar Companion To The Exoplanet Hosting Star 30 Arietis B, S. R. Kane, T. Barclay, M. Hartmann, A. P. Hatzes, Eric L. N. Jensen, D. R. Ciardi, D. Huber, J. T. Wright, E. V. Quintana
On The Stellar Companion To The Exoplanet Hosting Star 30 Arietis B, S. R. Kane, T. Barclay, M. Hartmann, A. P. Hatzes, Eric L. N. Jensen, D. R. Ciardi, D. Huber, J. T. Wright, E. V. Quintana
Physics & Astronomy Faculty Works
A crucial aspect of understanding planet formation is determining the binarity of the host stars. Results from radial velocity (RV) surveys and the follow-up of Kepler exoplanet candidates have demonstrated that stellar binarity certainly does not exclude the presence of planets in stable orbits and the configuration may in fact be relatively common. Here we present new results for the 30 Arietis system which confirms that the B component hosts both planetary and stellar companions. Keck AO imaging provides direct detection of the stellar companion and additional RV data are consistent with an orbiting star. We present a revised orbit …
Six Planets Orbiting Hd 219134, Steve Vogt, Jennifer Burt, Stefano Meschiari, R. Paul Butler, Gregory W. Henry, Songhu Wang, Brad Holden, Cyril Gapp, Russell Hanson, Pamela Arriagada, Sandy Keiser, Johanna Teske, Gregory Laughlin
Six Planets Orbiting Hd 219134, Steve Vogt, Jennifer Burt, Stefano Meschiari, R. Paul Butler, Gregory W. Henry, Songhu Wang, Brad Holden, Cyril Gapp, Russell Hanson, Pamela Arriagada, Sandy Keiser, Johanna Teske, Gregory Laughlin
Information Systems and Engineering Management Research Publications
We present new, high-precision Doppler radial velocity (RV) data sets for the nearby K3V star HD 219134. The data include 175 velocities obtained with the HIRES Spectrograph at the Keck I Telescope and 101 velocities obtained with the Levy Spectrograph at the Automated Planet Finder Telescope at Lick Observatory. Our observations reveal six new planetary candidates, with orbital periods of P = 3.1, 6.8, 22.8, 46.7, 94.2, and 2247 days, spanning masses of ${\mathcal{M}}\mathrm{sin}i=3.8,$ 3.5, 8.9, 21.3, 10.8, and $108\;{{\mathcal{M}}}_{\oplus }$, respectively. Our analysis indicates that the outermost signal is unlikely to be an artifact induced by stellar activity. In …
Kelt-8b: A Highly Inflated Transiting Hot Jupiter And A New Technique For Extracting High-Precision Radial Velocities From Noisy Spectra, B. J. Fulton, K. A. Collins, B. S. Gaudi, K. G. Stassun, J. Pepper, T. G. Beatty, R. J. Siverd, K. Penev, A. W. Howard, C. Baranec, G. Corfini, J. D. Eastman, J. Gregorio, N. M. Law, M. B. Lund, T. E. Oberst, M. T. Penny, R. Riddle, J. E. Rodriguez, D. J. Stevens, R. Zambelli, C. Ziegler, A. Bieryla, G. D'Ago, D. L. Depoy, Eric L.N. Jensen, J. F. Kielkopf, D. W. Latham, M. Manner, J. Marshall, K. K. Mcleod, P. A. Reed
Kelt-8b: A Highly Inflated Transiting Hot Jupiter And A New Technique For Extracting High-Precision Radial Velocities From Noisy Spectra, B. J. Fulton, K. A. Collins, B. S. Gaudi, K. G. Stassun, J. Pepper, T. G. Beatty, R. J. Siverd, K. Penev, A. W. Howard, C. Baranec, G. Corfini, J. D. Eastman, J. Gregorio, N. M. Law, M. B. Lund, T. E. Oberst, M. T. Penny, R. Riddle, J. E. Rodriguez, D. J. Stevens, R. Zambelli, C. Ziegler, A. Bieryla, G. D'Ago, D. L. Depoy, Eric L.N. Jensen, J. F. Kielkopf, D. W. Latham, M. Manner, J. Marshall, K. K. Mcleod, P. A. Reed
Physics & Astronomy Faculty Works
We announce the discovery of a highly inflated transiting hot Jupiter by the KELT-North survey. A global analysis including constraints from isochrones indicates that the V = 10.8 host star (HD 343246) is a mildly evolved, G dwarf with {T}{eff}={5754}-55+54 K, {log} g={4.078}-0.054+0.049, [{Fe}/{{H}}]=0.272+/- 0.038, an inferred mass {M}*={1.211}-0.066+0.078 {M}☉ , and radius {R}*={1.67}-0.12+0.14 {R}☉ . The planetary companion has a mass {M}{{P}}={0.867}-0.061+0.065 MJ, radius {R}{{P}}={1.86}-0.16+0.18 RJ, surface gravity {log} {g} …
Kelt-7b: A Hot Jupiter Transiting A Bright V = 8.54 Rapidly Rotating F-Star, A. Bieryla, K. Collins, T. G. Beatty, J. Eastman, R. J. Siverd, J. Pepper, B. S. Gaudi, K. G. Stassun, C. Cañas, D. W. Latham, L. A. Buchhave, R. Sanchis-Ojeda, J. N. Winn, Eric L.N. Jensen, J. F. Kielkopf, K. K. Mcleod, J. Gregorio, K. D. Colón, R. Street, R. Ross, M. Penny, S. N. Mellon, T. E. Oberst, B. J. Fulton, J. Wang, P. Berlind, M. L. Calkins, G. A. Esquerdo, D. L. Depoy, A. Gould, J. Marshall, R. Pogge, M. Trueblood, P. Trueblood
Kelt-7b: A Hot Jupiter Transiting A Bright V = 8.54 Rapidly Rotating F-Star, A. Bieryla, K. Collins, T. G. Beatty, J. Eastman, R. J. Siverd, J. Pepper, B. S. Gaudi, K. G. Stassun, C. Cañas, D. W. Latham, L. A. Buchhave, R. Sanchis-Ojeda, J. N. Winn, Eric L.N. Jensen, J. F. Kielkopf, K. K. Mcleod, J. Gregorio, K. D. Colón, R. Street, R. Ross, M. Penny, S. N. Mellon, T. E. Oberst, B. J. Fulton, J. Wang, P. Berlind, M. L. Calkins, G. A. Esquerdo, D. L. Depoy, A. Gould, J. Marshall, R. Pogge, M. Trueblood, P. Trueblood
Physics & Astronomy Faculty Works
We report the discovery of KELT-7b, a transiting hot Jupiter with a mass of 1.28+/- 0.18 MJ, radius of {1.533}-0.047+0.046 RJ, and an orbital period of 2.7347749+/- 0.0000039 days. The bright host star (HD 33643; KELT-7) is an F-star with V = 8.54, Teff = 6789{}-49+50 K, [Fe/H] = {0.139}-0.081+0.075, and {log}\{\text{}}g\=4.149+/- 0.019. It has a mass of {1.535}-0.054+0.066 M☉, a radius of {1.732}-0.045+0.043 R☉, and is the fifth most massive, fifth hottest, and the ninth brightest star known to …
A Comprehensive Characterization Of The 70 Virginis Planetary System, Stephen R. Kane, Tabetha S. Boyajian, Gregory W. Henry, Y. Katherina Feng, Natalie R. Hinkel, Debra A. Fischer, Kaspar Von Braun, Andrew W. Howard, Jason T. Wright
A Comprehensive Characterization Of The 70 Virginis Planetary System, Stephen R. Kane, Tabetha S. Boyajian, Gregory W. Henry, Y. Katherina Feng, Natalie R. Hinkel, Debra A. Fischer, Kaspar Von Braun, Andrew W. Howard, Jason T. Wright
Information Systems and Engineering Management Research Publications
An on-going effort in the characterization of exoplanetary systems is the accurate determination of host star properties. This effort extends to the relatively bright host stars of planets discovered with the radial velocity method. The Transit Ephemeris Refinement and Monitoring Survey (TERMS) is aiding in these efforts as part of its observational campaign for exoplanet host stars. One of the first known systems is that of 70 Virginis, which harbors a jovian planet in an eccentric orbit. Here we present a complete characterization of this system with a compilation of TERMS photometry, spectroscopy, and interferometry. We provide fundamental properties of …
Three Super-Earths Orbiting Hd 7924, Benjamin J. Fulton, Lauren M. Weiss, Evan Sinukoff, Howard Isaacson, Andrew W. Howard, Geoffrey W. Marcy, Gregory W. Henry, Bradford P. Holden, Robert I. Kibrick
Three Super-Earths Orbiting Hd 7924, Benjamin J. Fulton, Lauren M. Weiss, Evan Sinukoff, Howard Isaacson, Andrew W. Howard, Geoffrey W. Marcy, Gregory W. Henry, Bradford P. Holden, Robert I. Kibrick
Information Systems and Engineering Management Research Publications
We report the discovery of two super-Earth-mass planets orbiting the nearby K0.5 dwarf HD 7924, which was previously known to host one small planet. The new companions have masses of 7.9 and 6.4 ${{M}_{\oplus }}$, and orbital periods of 15.3 and 24.5 days. We perform a joint analysis of high-precision radial velocity data from Keck/HIRES and the new Automated Planet Finder Telescope (APF) to robustly detect three total planets in the system. We refine the ephemeris of the previously known planet using 5 yr of new Keck data and high-cadence observations over the last 1.3 yr with the APF. With …
Refined Properties Of The Hd 130322 Planetary System, Natalie R. Hinkel, Stephen R. Kane, Gregory W. Henry, Y. Katherina Feng, Tabetha Boyajian, Jason Wright, Debra A. Fischer, Andrew W. Howard
Refined Properties Of The Hd 130322 Planetary System, Natalie R. Hinkel, Stephen R. Kane, Gregory W. Henry, Y. Katherina Feng, Tabetha Boyajian, Jason Wright, Debra A. Fischer, Andrew W. Howard
Information Systems and Engineering Management Research Publications
Exoplanetary systems closest to the Sun, with the brightest host stars, provide the most favorable opportunities for characterization studies of the host star and their planet(s). The Transit Ephemeris Refinement and Monitoring Survey uses both new radial velocity (RV) measurements and photometry in order to greatly improve planetary orbit uncertainties and the fundamental properties of the star, in this case HD 130322. The only companion, HD 130322b, orbits in a relatively circular orbit, e = 0.029 every ∼10.7 days. We have compiled RV measurements from multiple sources, including 12 unpublished from the Keck I telescope, over the course of ∼14 …