HATS-43b, HATS-44b, HATS-45b, and HATS-46b: Four Short-period Transiting Giant Planets in the Neptune-Jupiter Mass Range

R. Brahm, J. D. Hartman, A. Jordán, G. A. Bakos, N. Espinoza, M. Rabus, W. Bhatti, K. Penev, P. Sarkis, V. Suc, Z. Csubry, D. Bayliss, J. Bento, G. Zhou, L. Mancini, T. Henning, S. Ciceri, M. De Val-Borro, S. Shectman, J. D. CraneP. Arriagada, P. Butler, J. Teske, I. Thompson, D. Osip, M. Díaz, B. Schmidt, J. Lázár, I. Papp, P. Sári

Research output: Contribution to journalArticle

3 Scopus citations

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 MJ, 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.

Original languageEnglish (US)
Article number112
JournalAstronomical Journal
Volume155
Issue number3
DOIs
StatePublished - Mar 2018

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • planetary systems
  • stars: individual (HATS-43, HATS-44, HATS-45, HATS-46)

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    Brahm, R., Hartman, J. D., Jordán, A., Bakos, G. A., Espinoza, N., Rabus, M., Bhatti, W., Penev, K., Sarkis, P., Suc, V., Csubry, Z., Bayliss, D., Bento, J., Zhou, G., Mancini, L., Henning, T., Ciceri, S., Val-Borro, M. D., Shectman, S., ... Sári, P. (2018). HATS-43b, HATS-44b, HATS-45b, and HATS-46b: Four Short-period Transiting Giant Planets in the Neptune-Jupiter Mass Range. Astronomical Journal, 155(3), [112]. https://doi.org/10.3847/1538-3881/aaa898