A Caltech Library Service

HAT-P-38b: A Saturn-Mass Planet Transiting a Late G Star

Sato, Bun'ei and Hartman, Joel D. and Bakos, Gaspar Á. and Béky, Bence and Torres, Guillermo and Latham, David W. and Kovács, Géza and Csubry, Zoltán and Penev, Kaloyan and Noyes, Robert W. and Buchhave, Lars A. and Quinn, Samuel N. and Everett, Mark and Esquerdo, Gilbert A. and Fischer, Debra A. and Howard, Andrew W. and Johnson, John A. and Marcy, Geoff W. and Sasselov, Dimitar D. and Szklenár, Tamás and Lázár, József and Papp, István and Sári, Pál (2012) HAT-P-38b: A Saturn-Mass Planet Transiting a Late G Star. Publications of the Astronomical Society of Japan, 64 (5). Art. No. 97. ISSN 0004-6264.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


We report on the discovery of HAT-P-38b, a Saturn-mass exoplanet, transiting the V = 12.56 dwarf star GSC 2314-00559 on a P = 4.6404 d circular orbit. The host star is a 0.89 M_⊙ late G dwarf, with solar metallicity and a radius of 0.92 R_⊙. The planetary companion has a mass of 0.27 M_J and a radius of 0.82 R_J. HAT-P-38b is one of the planets the mass and radius of which have ever been discovered to be the closest to those of Saturn.

Item Type:Article
Related URLs:
URLURL TypeDescription
Hartman, Joel D.0000-0001-8732-6166
Bakos, Gaspar Á.0000-0001-7204-6727
Torres, Guillermo0000-0002-5286-0251
Latham, David W.0000-0001-9911-7388
Penev, Kaloyan0000-0003-4464-1371
Buchhave, Lars A.0000-0003-1605-5666
Quinn, Samuel N.0000-0002-8964-8377
Everett, Mark0000-0002-0885-7215
Esquerdo, Gilbert A.0000-0002-9789-5474
Fischer, Debra A.0000-0003-2221-0861
Howard, Andrew W.0000-0001-8638-0320
Johnson, John A.0000-0001-9808-7172
Marcy, Geoff W.0000-0002-2909-0113
Sasselov, Dimitar D.0000-0001-7014-1771
Additional Information:© 2012 Astronomical Society of Japan. Received 2012 January 25; accepted 2012 March 13. HATNet operations have been funded by NASA grants NNG04GN74G, NNX08AF23G, NNX09AB29G and SAO IR&D grants. GT acknowledges partial support from NASA grant NNX09AF59G. We also acknowledge partial support from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (DWL, PI). GK thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NASA (N108Hr). Based in part on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.
Funding AgencyGrant Number
Hungarian Scientific Research Foundation (OTKA)K-81373
Smithsonian Astrophysical ObservatoryUNSPECIFIED
Subject Keywords:stars: individual (GSC 2314-00559); stars: planetary systems; techniques: photometric; techniques: spectroscopic
Issue or Number:5
Record Number:CaltechAUTHORS:20130205-162243030
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36789
Deposited By: Jason Perez
Deposited On:08 Feb 2013 16:12
Last Modified:09 Mar 2020 13:19

Repository Staff Only: item control page