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

John Asher Johnson, J. Zachary Gazak, Kevin Apps, Philip S. Muirhead, Justin R. Crepp, Ian J M Crossfield, Boyajian Tabetha Boyajian, Kaspar Von Braun, Barbara Rojas-Ayala, Andrew W. Howard, Kevin R. Covey, Everett Schlawin, Katherine Hamren, Timothy D. Morton, Geoffrey W. Marcy, James P. Lloyd

Resultado de la investigación: Article

90 Citas (Scopus)

Resumen

We report the confirmation and characterization of a transiting gas giant planet orbiting the M dwarf KOI-254 every 2.455239days, 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-254b 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 M P = 0.505 M Jup, radius R P = 0.96 R Jup, and semimajor axis a = 0.030 AU, based on our measured stellar mass M = 0.59 M and radius R = 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.

Idioma originalEnglish
Número de artículo111
PublicaciónAstronomical Journal
Volumen143
N.º5
DOI
EstadoPublished - may 2012

Huella dactilar

Jupiter (planet)
Jupiter
planets
planet
metallicity
Kepler mission
gas giant planets
dwarf stars
stars
radii
harbors
transit
stellar mass
adaptive optics
velocity measurement
radial velocity
photometry
physical properties
infrared spectroscopy
methodology

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Johnson, J. A., Gazak, J. Z., Apps, K., Muirhead, P. S., Crepp, J. R., Crossfield, I. J. M., ... Lloyd, J. P. (2012). Characterizing the cool KOIs. II. the M dwarf KOI-254 and its hot Jupiter. Astronomical Journal, 143(5), [111]. https://doi.org/10.1088/0004-6256/143/5/111
Johnson, John Asher ; Gazak, J. Zachary ; Apps, Kevin ; Muirhead, Philip S. ; Crepp, Justin R. ; Crossfield, Ian J M ; Tabetha Boyajian, Boyajian ; Von Braun, Kaspar ; Rojas-Ayala, Barbara ; Howard, Andrew W. ; Covey, Kevin R. ; Schlawin, Everett ; Hamren, Katherine ; Morton, Timothy D. ; Marcy, Geoffrey W. ; Lloyd, James P. / Characterizing the cool KOIs. II. the M dwarf KOI-254 and its hot Jupiter. En: Astronomical Journal. 2012 ; Vol. 143, N.º 5.
@article{d5df6655408b4e4eac9f8fd963b45719,
title = "Characterizing the cool KOIs. II. the M dwarf KOI-254 and its hot Jupiter",
abstract = "We report the confirmation and characterization of a transiting gas giant planet orbiting the M dwarf KOI-254 every 2.455239days, 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-254b 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 M P = 0.505 M Jup, radius R P = 0.96 R Jup, and semimajor axis a = 0.030 AU, based on our measured stellar mass M = 0.59 M and radius R = 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.",
keywords = "planetary systems, techniques: photometric, techniques: radial velocities, techniques: spectroscopic",
author = "Johnson, {John Asher} and Gazak, {J. Zachary} and Kevin Apps and Muirhead, {Philip S.} and Crepp, {Justin R.} and Crossfield, {Ian J M} and {Tabetha Boyajian}, Boyajian and {Von Braun}, Kaspar and Barbara Rojas-Ayala and Howard, {Andrew W.} and Covey, {Kevin R.} and Everett Schlawin and Katherine Hamren and Morton, {Timothy D.} and Marcy, {Geoffrey W.} and Lloyd, {James P.}",
year = "2012",
month = "5",
doi = "10.1088/0004-6256/143/5/111",
language = "English",
volume = "143",
journal = "Astronomical Journal",
issn = "0004-6256",
publisher = "IOP Publishing Ltd.",
number = "5",

}

Johnson, JA, Gazak, JZ, Apps, K, Muirhead, PS, Crepp, JR, Crossfield, IJM, Tabetha Boyajian, B, Von Braun, K, Rojas-Ayala, B, Howard, AW, Covey, KR, Schlawin, E, Hamren, K, Morton, TD, Marcy, GW & Lloyd, JP 2012, 'Characterizing the cool KOIs. II. the M dwarf KOI-254 and its hot Jupiter', Astronomical Journal, vol. 143, n.º 5, 111. https://doi.org/10.1088/0004-6256/143/5/111

Characterizing the cool KOIs. II. the M dwarf KOI-254 and its hot Jupiter. / Johnson, John Asher; Gazak, J. Zachary; Apps, Kevin; Muirhead, Philip S.; Crepp, Justin R.; Crossfield, Ian J M; Tabetha Boyajian, Boyajian; Von Braun, Kaspar; Rojas-Ayala, Barbara; Howard, Andrew W.; Covey, Kevin R.; Schlawin, Everett; Hamren, Katherine; Morton, Timothy D.; Marcy, Geoffrey W.; Lloyd, James P.

En: Astronomical Journal, Vol. 143, N.º 5, 111, 05.2012.

Resultado de la investigación: Article

TY - JOUR

T1 - Characterizing the cool KOIs. II. the M dwarf KOI-254 and its hot Jupiter

AU - Johnson, John Asher

AU - Gazak, J. Zachary

AU - Apps, Kevin

AU - Muirhead, Philip S.

AU - Crepp, Justin R.

AU - Crossfield, Ian J M

AU - Tabetha Boyajian, Boyajian

AU - Von Braun, Kaspar

AU - Rojas-Ayala, Barbara

AU - Howard, Andrew W.

AU - Covey, Kevin R.

AU - Schlawin, Everett

AU - Hamren, Katherine

AU - Morton, Timothy D.

AU - Marcy, Geoffrey W.

AU - Lloyd, James P.

PY - 2012/5

Y1 - 2012/5

N2 - We report the confirmation and characterization of a transiting gas giant planet orbiting the M dwarf KOI-254 every 2.455239days, 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-254b 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 M P = 0.505 M Jup, radius R P = 0.96 R Jup, and semimajor axis a = 0.030 AU, based on our measured stellar mass M = 0.59 M and radius R = 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.

AB - We report the confirmation and characterization of a transiting gas giant planet orbiting the M dwarf KOI-254 every 2.455239days, 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-254b 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 M P = 0.505 M Jup, radius R P = 0.96 R Jup, and semimajor axis a = 0.030 AU, based on our measured stellar mass M = 0.59 M and radius R = 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.

KW - planetary systems

KW - techniques: photometric

KW - techniques: radial velocities

KW - techniques: spectroscopic

UR - http://www.scopus.com/inward/record.url?scp=84859908840&partnerID=8YFLogxK

U2 - 10.1088/0004-6256/143/5/111

DO - 10.1088/0004-6256/143/5/111

M3 - Article

AN - SCOPUS:84859908840

VL - 143

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

IS - 5

M1 - 111

ER -

Johnson JA, Gazak JZ, Apps K, Muirhead PS, Crepp JR, Crossfield IJM y otros. Characterizing the cool KOIs. II. the M dwarf KOI-254 and its hot Jupiter. Astronomical Journal. 2012 may;143(5). 111. https://doi.org/10.1088/0004-6256/143/5/111