Recent transits of the super-Earth exoplanet GJ 1214b

Pedro V. Sada, Drake Deming, Brian Jackson, Donald E. Jennings, Steven W. Peterson, Flynn Haase, Kevin Bays, Eamon O'Gorman, Alan Lundsford

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We report recent ground-based photometry of the transiting super-Earth exoplanet GJ 1214b at several wavelengths, including the infrared near 1.25 μm (J band).We observed a J-band transit with the FLAMINGOS infrared imager and the 2.1 m telescope on Kitt Peak, and we observed several optical transits using a 0.5 m telescope on Kitt Peak and the 0.36 m Universidad de Monterrey Observatory telescope. Our high-precision J-band observations exploit the brightness of the M dwarf host star at this infrared wavelength as compared with the optical and are significantly less affected by stellar activity and limb darkening. We fit the J-band transit to obtain an independent determination of the planetary and stellar radii. Our radius for the planet (2.61 -011+0.30. R⊕) is in excellent agreement with the discovery value reported by Charbonneau et al. based on optical data. We demonstrate that the planetary radius is insensitive to degeneracies in the fitting process. We use all of our observations to improve the transit ephemeris, finding P = 1.5804043 ± 0.0000005 days and T0 = 2454964.94390 ± 0.00006 BJD. © 2010. The American Astronomical Society. All rights reserved.
Original languageEnglish
JournalAstrophysical Journal Letters
DOIs
Publication statusPublished - 10 Sep 2010

Fingerprint

extrasolar planets
transit
wavelength
telescopes
radii
limb
near infrared
planet
observatory
stellar activity
limb darkening
dwarf stars
darkening
M stars
wavelengths
photometry
planets
observatories
brightness

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Sada, P. V., Deming, D., Jackson, B., Jennings, D. E., Peterson, S. W., Haase, F., ... Lundsford, A. (2010). Recent transits of the super-Earth exoplanet GJ 1214b. Astrophysical Journal Letters. https://doi.org/10.1088/2041-8205/720/2/L215
Sada, Pedro V. ; Deming, Drake ; Jackson, Brian ; Jennings, Donald E. ; Peterson, Steven W. ; Haase, Flynn ; Bays, Kevin ; O'Gorman, Eamon ; Lundsford, Alan. / Recent transits of the super-Earth exoplanet GJ 1214b. In: Astrophysical Journal Letters. 2010.
@article{35bbce27696a4228a5764193c1b32513,
title = "Recent transits of the super-Earth exoplanet GJ 1214b",
abstract = "We report recent ground-based photometry of the transiting super-Earth exoplanet GJ 1214b at several wavelengths, including the infrared near 1.25 μm (J band).We observed a J-band transit with the FLAMINGOS infrared imager and the 2.1 m telescope on Kitt Peak, and we observed several optical transits using a 0.5 m telescope on Kitt Peak and the 0.36 m Universidad de Monterrey Observatory telescope. Our high-precision J-band observations exploit the brightness of the M dwarf host star at this infrared wavelength as compared with the optical and are significantly less affected by stellar activity and limb darkening. We fit the J-band transit to obtain an independent determination of the planetary and stellar radii. Our radius for the planet (2.61 -011+0.30. R⊕) is in excellent agreement with the discovery value reported by Charbonneau et al. based on optical data. We demonstrate that the planetary radius is insensitive to degeneracies in the fitting process. We use all of our observations to improve the transit ephemeris, finding P = 1.5804043 ± 0.0000005 days and T0 = 2454964.94390 ± 0.00006 BJD. {\circledC} 2010. The American Astronomical Society. All rights reserved.",
author = "Sada, {Pedro V.} and Drake Deming and Brian Jackson and Jennings, {Donald E.} and Peterson, {Steven W.} and Flynn Haase and Kevin Bays and Eamon O'Gorman and Alan Lundsford",
year = "2010",
month = "9",
day = "10",
doi = "10.1088/2041-8205/720/2/L215",
language = "English",
journal = "Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing Ltd.",

}

Sada, PV, Deming, D, Jackson, B, Jennings, DE, Peterson, SW, Haase, F, Bays, K, O'Gorman, E & Lundsford, A 2010, 'Recent transits of the super-Earth exoplanet GJ 1214b', Astrophysical Journal Letters. https://doi.org/10.1088/2041-8205/720/2/L215

Recent transits of the super-Earth exoplanet GJ 1214b. / Sada, Pedro V.; Deming, Drake; Jackson, Brian; Jennings, Donald E.; Peterson, Steven W.; Haase, Flynn; Bays, Kevin; O'Gorman, Eamon; Lundsford, Alan.

In: Astrophysical Journal Letters, 10.09.2010.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Recent transits of the super-Earth exoplanet GJ 1214b

AU - Sada, Pedro V.

AU - Deming, Drake

AU - Jackson, Brian

AU - Jennings, Donald E.

AU - Peterson, Steven W.

AU - Haase, Flynn

AU - Bays, Kevin

AU - O'Gorman, Eamon

AU - Lundsford, Alan

PY - 2010/9/10

Y1 - 2010/9/10

N2 - We report recent ground-based photometry of the transiting super-Earth exoplanet GJ 1214b at several wavelengths, including the infrared near 1.25 μm (J band).We observed a J-band transit with the FLAMINGOS infrared imager and the 2.1 m telescope on Kitt Peak, and we observed several optical transits using a 0.5 m telescope on Kitt Peak and the 0.36 m Universidad de Monterrey Observatory telescope. Our high-precision J-band observations exploit the brightness of the M dwarf host star at this infrared wavelength as compared with the optical and are significantly less affected by stellar activity and limb darkening. We fit the J-band transit to obtain an independent determination of the planetary and stellar radii. Our radius for the planet (2.61 -011+0.30. R⊕) is in excellent agreement with the discovery value reported by Charbonneau et al. based on optical data. We demonstrate that the planetary radius is insensitive to degeneracies in the fitting process. We use all of our observations to improve the transit ephemeris, finding P = 1.5804043 ± 0.0000005 days and T0 = 2454964.94390 ± 0.00006 BJD. © 2010. The American Astronomical Society. All rights reserved.

AB - We report recent ground-based photometry of the transiting super-Earth exoplanet GJ 1214b at several wavelengths, including the infrared near 1.25 μm (J band).We observed a J-band transit with the FLAMINGOS infrared imager and the 2.1 m telescope on Kitt Peak, and we observed several optical transits using a 0.5 m telescope on Kitt Peak and the 0.36 m Universidad de Monterrey Observatory telescope. Our high-precision J-band observations exploit the brightness of the M dwarf host star at this infrared wavelength as compared with the optical and are significantly less affected by stellar activity and limb darkening. We fit the J-band transit to obtain an independent determination of the planetary and stellar radii. Our radius for the planet (2.61 -011+0.30. R⊕) is in excellent agreement with the discovery value reported by Charbonneau et al. based on optical data. We demonstrate that the planetary radius is insensitive to degeneracies in the fitting process. We use all of our observations to improve the transit ephemeris, finding P = 1.5804043 ± 0.0000005 days and T0 = 2454964.94390 ± 0.00006 BJD. © 2010. The American Astronomical Society. All rights reserved.

U2 - 10.1088/2041-8205/720/2/L215

DO - 10.1088/2041-8205/720/2/L215

M3 - Article

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

SN - 2041-8205

ER -