A nearby transiting rocky exoplanet that is suitable for atmospheric investigation
Abstract
Spectroscopy of transiting exoplanets can be used to investigate their atmospheric properties and habitability. Combining radial velocity (RV) and transit data provides additional information on exoplanet physical properties. We detect a transiting rocky planet with an orbital period of 1.467 days around the nearby red dwarf star Gliese 486. The planet Gliese 486 b is 2.81 Earth masses and 1.31 Earth radii, with uncertainties of 5%, as determined from RV data and photometric light curves. The host star is at a distance of ~8.1 parsecs, has a J-band magnitude of ~7.2, and is observable from both hemispheres of Earth. On the basis of these properties and the planet's short orbital period and high equilibrium temperature, we show that this terrestrial planet is suitable for emission and transit spectroscopy.
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@article{arxiv.2103.04950,
title = {A nearby transiting rocky exoplanet that is suitable for atmospheric investigation},
author = {T. Trifonov and J. A. Caballero and J. C. Morales and A. Seifahrt and I. Ribas and A. Reiners and J. L. Bean and R. Luque and H. Parviainen and E. Pallé and S. Stock and M. Zechmeister and P. J. Amado and G. Anglada-Escudé3 and M. Azzaro and T. Barclay and V. J. S. Béjar and P. Bluhm and N. Casasayas-Barris and C. Cifuentes and K. A. Collins and K. I. Collins and M. Cortés-Contreras and J. de Leon and S. Dreizler and C. D. Dressing and E. Esparza-Borges and N. Espinoza and M. Fausnaugh and A. Fukui and A. P. Hatzes and C. Hellier and Th. Henning and C. E. Henze and E. Herrero and S. V. Jeffers and J. M. Jenkins and E. L. N. Jensen and A. Kaminski and D. Kasper and D. Kossakowski and M. Kürster and M. Lafarga and D. W. Latham and A. W. Mann and K. Molaverdikhani and D. Montes and B. T. Montet and F. Murgas and N. Narita and M. Oshagh and V. M. Passegger and D. Pollacco and S. N. Quinn and A. Quirrenbach and G. R. Ricker and C. Rodríguez López and J. Sanz-Forcada and R. P. Schwarz and A. Schweitzer and S. Seager and A. Shporer and M. Stangret and J. Stürmer and T. G. Tan and P. Tenenbaum and J. D. Twicken and R. Vanderspek and J. N. Winn},
journal= {arXiv preprint arXiv:2103.04950},
year = {2021}
}
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Published in Science