SIMBAD references

2012AJ....143..111J - Astron. J., 143, 111 (2012/May-0)

Characterizing the cool KOIs. II. The M dwarf KOI-254 and its hot Jupiter.

JOHNSON J.A., GAZAK J.Z., APPS K., MUIRHEAD P.S., CREPP J.R., CROSSFIELD I.J.M., BOYAJIAN T., VON BRAUN K., ROJAS-AYALA B., HOWARD A.W., COVEY K.R., SCHLAWIN E., HAMREN K., MORTON T.D., MARCY G.W. and LLOYD J.P.

Abstract (from CDS):

We report the confirmation and characterization of a transiting gas giant planet orbiting the M dwarf KOI-254 every 2.455239 days, which was originally discovered by the Kepler mission. We use radial velocity measurements, adaptive optics imaging, and near-infrared spectroscopy to confirm the planetary nature of the transit events. KOI-254 b is the first hot Jupiter discovered around an M-type dwarf star. We also present a new model-independent method of using broadband photometry to estimate the mass and metallicity of an M dwarf without relying on a direct distance measurement. Included in this methodology is a new photometric metallicity calibration based on J - K colors. We use this technique to measure the physical properties of KOI-254 and its planet. We measure a planet mass of MP= 0.505 MJup, radius RP= 0.96 RJup, and semimajor axis a = 0.030 AU, based on our measured stellar mass M{sstarf}= 0.59 M and radius R{sstarf}= 0.55 R. We also find that the host star is metal-rich, which is consistent with the sample of M-type stars known to harbor giant planets.

Abstract Copyright:

Journal keyword(s): planetary systems - techniques: photometric - techniques: radial velocities - techniques: spectroscopic

CDS comments: Figure 4: HD 19305 is a misprint for HD 199305.

Simbad objects: 15

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2019.12.12-22:40:34

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