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HAT-P-30b: A Transiting Hot Jupiter on a Highly Oblique Orbit

Johnson, John Asher and Morton, T. D. and Howard, A. W. (2011) HAT-P-30b: A Transiting Hot Jupiter on a Highly Oblique Orbit. Astrophysical Journal, 735 (1). Art. No. 24. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20110706-090138293

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Abstract

We report the discovery of HAT-P-30b, a transiting exoplanet orbiting the V = 10.419 dwarf star GSC 0208-00722. The planet has a period P = 2.810595 ± 0.000005 days, transit epoch Tc = 2455456.46561 ± 0.00037 (BJD), and transit duration 0.0887 ± 0.0015 days. The host star has a mass of 1.24 ± 0.04 M_⊙, radius of 1.21 ± 0.05 R_⊙, effective temperature of 6304 ± 88 K, and metallicity [Fe/H] = +0.13 ± 0.08. The planetary companion has a mass of 0.711 ± 0.028 M J and radius of 1.340 ± 0.065 R J yielding a mean density of 0.37 ± 0.05 g cm^(–3). We also present radial velocity measurements that were obtained throughout a transit that exhibit the Rossiter-McLaughlin effect. By modeling this effect, we measure an angle of λ = 73.°5 ± 9.°0 between the sky projections of the planet's orbit normal and the star's spin axis. HAT-P-30b represents another example of a close-in planet on a highly tilted orbit, and conforms to the previously noted pattern that tilted orbits are more common around stars with T_(eff*) ≳ 6250 K.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-637X/735/1/24DOIArticle
http://iopscience.iop.org/0004-637X/735/1/24PublisherArticle
ORCID:
AuthorORCID
Morton, T. D.0000-0002-8537-5711
Howard, A. W.0000-0001-8638-0320
Additional Information:© 2011 American Astronomical Society. Received 2011 March 19; accepted 2011 April 10; published 2011 June 10. Based in part on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NASA (N167Hr). Based in part on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. HATNet operations have been funded by NASA grants NNG04GN74G and NNX08AF23G and SAO IR&D grants. G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (PI: D.W.L.). G.K. 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 (N167Hr). Based in part on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.
Funders:
Funding AgencyGrant Number
NASANNG04GN74G
NASANNX08AF23G
NASANNX09AF59G
NASANCC2-1390
Hungarian Scientific Research Foundation (OTKA)K-81373
NASAN167Hr
Issue or Number:1
Classification Code:PACS: 97.82-j; 97.10.Wn; 97.1.Ri; 95.85.Kr; 97.10.Pg; 97.20.Jg
Record Number:CaltechAUTHORS:20110706-090138293
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110706-090138293
Official Citation:HAT-P-30b: A Transiting Hot Jupiter on a Highly Oblique Orbit John Asher Johnson, J. N. Winn, G. Á. Bakos, J. D. Hartman, T. D. Morton, G. Torres, Géza Kovács, D. W. Latham, R. W. Noyes, B. Sato, G. A. Esquerdo, D. A. Fischer, G. W. Marcy, A. W. Howard, L. A. Buchhave, G. Fűrész, S. N. Quinn, B. Béky, D. D. Sasselov, R. P. Stefanik, J. Lázár, I. Papp and P. Sári doi: 10.1088/0004-637X/735/1/24
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24311
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:06 Jul 2011 16:40
Last Modified:03 Oct 2019 02:55

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