SIMBAD references

2024ApJ...967L..21K - Astrophys. J., 967, L21 (2024/June-1)

Gliese 12 b: A Temperate Earth-sized Planet at 12 pc Ideal for Atmospheric Transmission Spectroscopy.

KUZUHARA M., FUKUI A., LIVINGSTON J.H., CABALLERO J.A., DE LEON J.P., HIRANO T., KASAGI Y., MURGAS F., NARITA N., OMIYA M., ORELL-MIQUEL J., PALLE E., CHANGEAT Q., ESPARZA-BORGES E., HARAKAWA H., HELLIER C., HORI Y., IKUTA K., ISHIKAWA H.T., KODAMA T., KOTANI T., KUDO T., MORALES J.C., MORI M., NAGEL E., PARVIAINEN H., PERDELWITZ V., REINERS A., RIBAS I., SANZ-FORCADA J., SATO B., SCHWEITZER A., TABERNERO H.M., TAKARADA T., UYAMA T., WATANABE N., ZECHMEISTER M., ABREU GARCIA N., AOKI W., BEICHMAN C., BEJAR V.J.S., BRANDT T.D., CALATAYUD-BORRAS Y., CARLEO I., CHARBONNEAU D., COLLINS K.A., CURRIE T., DOTY J.P., DREIZLER S., FERNANDEZ-RODRIGUEZ G., FUKUDA I., GALAN D., GERALDIA-GONZALEZ S., GONZALEZ-RODRIGUEZ J., HAYASHI Y., HEDGES C., HENNING T., HODAPP K., IKOMA M., ISOGAI K., JACOBSON S., JANSON M., JENKINS J.M., KAGETANI T., KAMBE E., KAWAI Y., KAWAUCHI K., KOKUBO E., KONISHI M., KORTH J., KRISHNAMURTHY V., KUROKAWA T., KUSAKABE N., KWON J., LAZA-RAMOS A., LIBOTTE F., LUQUE R., MADRIGAL-AGUADO A., MATSUMOTO Y., MAWET D., McELWAIN M.W., MENI GALLARDO P.P., MORELLO G., MUNOZ TORRES S., NISHIKAWA J., NUGROHO S.K., OGIHARA M., PELAEZ-TORRES A., RAPETTI D., SANCHEZ-BENAVENTE M., SCHLECKER M., SEAGER S., SERABYN E., SERIZAWA T., STANGRET M., TAKAHASHI A., TENG H.-Y., TAMURA M., TERADA Y., UEDA A., USUDA T., VANDERSPEK R., VIEVARD S., WATANABE D., WINN J.N. and ZAPATERO OSORIO M.R.

Abstract (from CDS):

Recent discoveries of Earth-sized planets transiting nearby M dwarfs have made it possible to characterize the atmospheres of terrestrial planets via follow-up spectroscopic observations. However, the number of such planets receiving low insolation is still small, limiting our ability to understand the diversity of the atmospheric composition and climates of temperate terrestrial planets. We report the discovery of an Earth-sized planet transiting the nearby (12 pc) inactive M3.0 dwarf Gliese 12 (TOI-6251) with an orbital period (P_orb) of 12.76 days. The planet, Gliese 12 b, was initially identified as a candidate with an ambiguous P_orb from TESS data. We confirmed the transit signal and P_orb using ground-based photometry with MuSCAT2 and MuSCAT3, and validated the planetary nature of the signal using high-resolution images from Gemini/NIRI and Keck/NIRC2 as well as radial velocity (RV) measurements from the InfraRed Doppler instrument on the Subaru 8.2 m telescope and from CARMENES on the CAHA 3.5 m telescope. X-ray observations with XMM-Newton showed the host star is inactive, with an X-ray-to-bolometric luminosity ratio of $\mathrm{log}{L}_{{\rm{X}}}/{L}_{\mathrm{bol}}\approx -5.7$ . Joint analysis of the light curves and RV measurements revealed that Gliese 12 b has a radius of 0.96 ± 0.05 R_⊕, a 3σ mass upper limit of 3.9 M_⊕, and an equilibrium temperature of 315 ± 6 K assuming zero albedo. The transmission spectroscopy metric (TSM) value of Gliese 12 b is close to the TSM values of the TRAPPIST-1 planets, adding Gliese 12 b to the small list of potentially terrestrial, temperate planets amenable to atmospheric characterization with JWST.

Journal keyword(s): Exoplanet astronomy - Exoplanet atmospheres - Exoplanets - Extrasolar rocky planets - Space telescopes - Transit photometry - Radial velocity - Astronomy data modeling - High resolution spectroscopy

Simbad objects: 21

Full paper

View the references in ADS

To bookmark this query, right click on this link: simbad:2024ApJ...967L..21K and select 'bookmark this link' or equivalent in the popup menu