Day-side z′-band emission and eccentricity of wasp-12b

Mercedes López-Morales, Jeffrey L. Coughlin, David K. Sing, Adam Burrows, Daniel Apai, Justin C. Rogers, David S. Spiegel, Elisabeth R. Adams

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

We report the detection of the eclipse of the very hot Jupiter WASP-12b via z′-band time-series photometry obtained with the 3.5 m Astrophysical Research Consortium telescope at Apache Point Observatory. We measure a decrease in flux of 0.082% 0.015% during the passage of the planet behind the star. That planetary flux is equally well reproduced by atmospheric models with and without extra absorbers, and blackbody models with f ≥ 0.585 ± 0.080. It is therefore necessary to measure the planet at other wavelengths to further constrain its atmospheric properties. The eclipse appears centered at phase φ = 0.5100+0.0072 -0.0061, consistent with an orbital eccentricity of |ecos ω| = 0.016+0.011 -0.009 (see note at the end of Section 4). If the orbit of the planet is indeed eccentric, the large radius of WASP-12b can be explained by tidal heating.

Original languageEnglish (US)
JournalAstrophysical Journal Letters
Volume716
Issue number1 PART 2
DOIs
StatePublished - 2010
Externally publishedYes

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wasp
eccentricity
planets
planet
eclipses
atmospheric models
eccentrics
Jupiter (planet)
Jupiter
photometry
absorbers
observatories
astrophysics
observatory
telescopes
time series
heating
wavelength
orbits
stars

Keywords

  • Planetary systems
  • Stars: individual (WASP-12)
  • Techniques: photometric

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

López-Morales, M., Coughlin, J. L., Sing, D. K., Burrows, A., Apai, D., Rogers, J. C., ... Adams, E. R. (2010). Day-side z′-band emission and eccentricity of wasp-12b. Astrophysical Journal Letters, 716(1 PART 2). https://doi.org/10.1088/2041-8205/716/1/L36

Day-side z′-band emission and eccentricity of wasp-12b. / López-Morales, Mercedes; Coughlin, Jeffrey L.; Sing, David K.; Burrows, Adam; Apai, Daniel; Rogers, Justin C.; Spiegel, David S.; Adams, Elisabeth R.

In: Astrophysical Journal Letters, Vol. 716, No. 1 PART 2, 2010.

Research output: Contribution to journalArticle

López-Morales, M, Coughlin, JL, Sing, DK, Burrows, A, Apai, D, Rogers, JC, Spiegel, DS & Adams, ER 2010, 'Day-side z′-band emission and eccentricity of wasp-12b', Astrophysical Journal Letters, vol. 716, no. 1 PART 2. https://doi.org/10.1088/2041-8205/716/1/L36
López-Morales M, Coughlin JL, Sing DK, Burrows A, Apai D, Rogers JC et al. Day-side z′-band emission and eccentricity of wasp-12b. Astrophysical Journal Letters. 2010;716(1 PART 2). https://doi.org/10.1088/2041-8205/716/1/L36
López-Morales, Mercedes ; Coughlin, Jeffrey L. ; Sing, David K. ; Burrows, Adam ; Apai, Daniel ; Rogers, Justin C. ; Spiegel, David S. ; Adams, Elisabeth R. / Day-side z′-band emission and eccentricity of wasp-12b. In: Astrophysical Journal Letters. 2010 ; Vol. 716, No. 1 PART 2.
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