HATS-43b, HATS-44b, HATS-45b, and HATS-46b: four short period transiting giant planets in the Neptune Jupiter mass range
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2018Metadata
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Brahm, R.
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HATS-43b, HATS-44b, HATS-45b, and HATS-46b: four short period transiting giant planets in the Neptune Jupiter mass range
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Abstract
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.
Patrocinador
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
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The Astronomical Journal, 155: 112 (18pp), 2018
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