| Issue |
A&A
Volume 558, October 2013
|
|
|---|---|---|
| Article Number | A86 | |
| Number of page(s) | 10 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361/201220993 | |
| Published online | 09 October 2013 | |
HAT-P-42b and HAT-P-43b
Two inflated transiting hot Jupiters from the HATNet Survey⋆,⋆⋆
1
Centro de Astrofísica, Universidade do Porto,
Rua das Estrelas, 4150-762
Porto,
Portugal
e-mail: Isabelle.Boisse@astro.up.pt
2
Princeton University, Department of Astrophysical
Sciences, Princeton,
NJ,
USA
3
Harvard-Smithsonian Center for Astrophysics,
Cambridge, MA, USA
4
Konkoly Observatory, Budapest, Hungary
5
Niels Bohr Institute, University of Copenhagen,
2100
Copenhagen,
Denmark
6
Centre for Star and Planet Formation, Natural History Museum of
Denmark, University of Copenhagen, 1350
Copenhagen,
Denmark
7
Division of Geological and Planetary Sciences, California
Institute of Technology, Pasadena, CA
91125,
USA
8
LCOGT, 6740
Cortona Drive, Santa
Barbara, CA,
USA
9
Department of Physics, Broida Hall, University of
California, Santa
Barbara, CA
93106,
USA
10
Institute for Astronomy, University of Hawaii,
Honolulu, HI, USA
11
Hungarian Astronomical Association, Budapest, Hungary
12
Department of Physics and Astrophysics, University of North
Dakota, Grand Forks,
ND,
USA
Received:
22
December
2012
Accepted:
14
April
2013
Aims. We announce the discovery of two new transiting planets, and provide their accurate initial characterization.
Methods. First identified from the HATNet wide-field photometric survey, these candidate transiting planets were then followed-up with a variety of photometric observations. Determining the planetary nature of the objects and characterizing the parameters of the systems were mainly done with the SOPHIE spectrograph at the 1.93 m telescope at OHP and the TRES spectrograph at the 1.5 m telescope at FLWO.
Results. HAT-P-42b and HAT-P-43b are typical hot Jupiters on circular orbits around early-G/late-F main sequence host stars, with periods of 4.641878 ± 0.000032 and 3.332687 ± 0.000015 days, masses of 1.044 ± 0.083 and 0.662 ± 0.060 MJ, and radii of 1.280 ± 0.153 and 1.28+0.062-0.033RJ, respectively. These discoveries increase the sample of planets with measured mean densities, which are needed to constrain theories of planetary interiors and atmospheres. Moreover, their hosts are relatively bright (V < 13.5), which facilitates further follow-up studies.
Key words: planetary systems / techniques: radial velocities / techniques: photometric / stars: individual: HAT-P-42 / stars: individual: HAT-P-43
Full Table 2 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/558/A86
The photometric/spectroscopic data presented in this paper are based in part on observations carried out by the Hungarian-made Automated Telescope Network, using telescopes operated at the Fred Lawrence Whipple Observatory (FLWO) of the Smithsonian Astrophysical Observatory (SAO), and at the Submillimeter Array (SMA) of SAO, by the Tillinghast Reflector 1.5 m telescope and the 1.2 m telescope, both operated by SAO at FLWO, by the SOPHIE spectrograph mounted on the 1.93 m telescope at Observatoire de Haute Provence, France (runs DDT-Dec. 2011), by the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias, and by the facilities of the Las Cumbres Observatory Global Telescope.
© ESO, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.