Journal
ASTRONOMICAL JOURNAL
Volume 155, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/1538-3881/aaa898
Keywords
planetary systems; stars: individual (HATS-43, HATS-44, HATS-45, HATS-46)
Categories
Funding
- NSF MRI [NSF/AST-0723074]
- NASA [NNX09AB29G, NNX12AH91H, NNX17AB61G, NNX14AE87G]
- FONDECYT [1171208]
- BASAL CATA [PFB-06]
- project Millennium Institute of Astrophysics (MAS) of the Millennium Science Initiative, Chilean Ministry of Economy [IC120009]
- Robert Martin Ayers Sciences Fund
- [NSF/AST-1108686]
- NASA [NNX17AB61G, 1003940] Funding Source: Federal RePORTER
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We report the discovery of four short-period extrasolar planets transiting moderately bright stars from photometric measurements of the HATSouth network coupled to additional spectroscopic and photometric follow-up observations. While the planet masses range from 0.26 to 0.90 M-J, the radii are all approximately a Jupiter radii, resulting in a wide range of bulk densities. The orbital period of the planets ranges from 2.7 days to 4.7 days, with HATS-43b having an orbit that appears to be marginally non-circular (e = 0.173 +/- 0.089). HATS-44 is notable for having a high metallicity ([Fe/H]= 0.320 +/- 0.071). The host stars spectral types range from late F to early K, and all of them are moderately bright (13.3 < V < 14.4), allowing the execution of future detailed follow-up observations. HATS-43b and HATS-46b, with expected transmission signals of 2350 ppm and 1500 ppm, respectively, are particularly well suited targets for atmospheric characterization via transmission spectroscopy.
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