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Title: THE ATMOSPHERES OF THE HOT-JUPITERS KEPLER-5b AND KEPLER-6b OBSERVED DURING OCCULTATIONS WITH WARM-SPITZER AND KEPLER

Abstract

This paper reports the detection and the measurements of occultations of the two transiting hot giant exoplanets Kepler-5b and Kepler-6b by their parent stars. The observations are obtained in the near-infrared with Warm-Spitzer Space Telescope and at optical wavelengths by combining more than a year of Kepler photometry. The investigation consists of constraining the eccentricities of these systems and of obtaining broadband emergent photometric data for individual planets. For both targets, the occultations are detected at the 3{sigma} level at each wavelength with mid-occultation times consistent with circular orbits. The brightness temperatures of these planets are deduced from the infrared observations and reach T{sub Spitzer} = 1930 {+-} 100 K and T{sub Spitzer} = 1660 {+-} 120 K for Kepler-5b and Kepler-6b, respectively. We measure optical geometric albedos A{sub g} in the Kepler bandpass and find A{sub g} = 0.12 {+-} 0.04 for Kepler-5b and A{sub g} = 0.11 {+-} 0.04 for Kepler-6b, leading to upper an limit for the Bond albedo of A{sub B} {<=} 0.17 in both cases. The observations for both planets are best described by models for which most of the incident energy is redistributed on the dayside, with only less than 10% of the absorbedmore » stellar flux redistributed to the nightside of these planets.« less

Authors:
; ; ;  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [12]
  1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
  2. Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States)
  3. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)
  4. Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States)
  5. Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
  6. NASA Ames Research Center, Moffett Field, CA 94035 (United States)
  7. Las Cumbres Observatory Global Telescope, Goleta, CA 93117 (United States)
  8. SETI Institute, Mountain View, CA 94043 (United States)
  9. Department of Astronomy, University of Florida, Gainesville, FL 32611 (United States)
  10. Space Telescope Science Institute, Baltimore, MD 21218 (United States)
  11. Berkeley Astronomy Department, University of California, Berkeley, CA 94720 (United States)
  12. Massachusetts Institute of Technology, Cambridge, MA 02159 (United States)
Publication Date:
OSTI Identifier:
22047346
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal, Supplement Series
Additional Journal Information:
Journal Volume: 197; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0067-0049
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ALBEDO; ASTRONOMY; ASTROPHYSICS; ATMOSPHERES; BRIGHTNESS; DETECTION; ECLIPSE; ORBITS; PHOTOMETRY; PLANETS; SPACE; STARS; STELLAR RADIATION; TELESCOPES; WAVELENGTHS

Citation Formats

Desert, Jean-Michel, Charbonneau, David, Fressin, Francois, Latham, David W, Fortney, Jonathan J, Madhusudhan, Nikku, Knutson, Heather A, Deming, Drake, Borucki, William J, Brown, Timothy M, Caldwell, Douglas, Ford, Eric B, Gilliland, Ronald L, Marcy, Geoffrey W, and Seager, Sara. THE ATMOSPHERES OF THE HOT-JUPITERS KEPLER-5b AND KEPLER-6b OBSERVED DURING OCCULTATIONS WITH WARM-SPITZER AND KEPLER. United States: N. p., 2011. Web. doi:10.1088/0067-0049/197/1/11.
Desert, Jean-Michel, Charbonneau, David, Fressin, Francois, Latham, David W, Fortney, Jonathan J, Madhusudhan, Nikku, Knutson, Heather A, Deming, Drake, Borucki, William J, Brown, Timothy M, Caldwell, Douglas, Ford, Eric B, Gilliland, Ronald L, Marcy, Geoffrey W, & Seager, Sara. THE ATMOSPHERES OF THE HOT-JUPITERS KEPLER-5b AND KEPLER-6b OBSERVED DURING OCCULTATIONS WITH WARM-SPITZER AND KEPLER. United States. https://doi.org/10.1088/0067-0049/197/1/11
Desert, Jean-Michel, Charbonneau, David, Fressin, Francois, Latham, David W, Fortney, Jonathan J, Madhusudhan, Nikku, Knutson, Heather A, Deming, Drake, Borucki, William J, Brown, Timothy M, Caldwell, Douglas, Ford, Eric B, Gilliland, Ronald L, Marcy, Geoffrey W, and Seager, Sara. 2011. "THE ATMOSPHERES OF THE HOT-JUPITERS KEPLER-5b AND KEPLER-6b OBSERVED DURING OCCULTATIONS WITH WARM-SPITZER AND KEPLER". United States. https://doi.org/10.1088/0067-0049/197/1/11.
@article{osti_22047346,
title = {THE ATMOSPHERES OF THE HOT-JUPITERS KEPLER-5b AND KEPLER-6b OBSERVED DURING OCCULTATIONS WITH WARM-SPITZER AND KEPLER},
author = {Desert, Jean-Michel and Charbonneau, David and Fressin, Francois and Latham, David W and Fortney, Jonathan J and Madhusudhan, Nikku and Knutson, Heather A and Deming, Drake and Borucki, William J and Brown, Timothy M and Caldwell, Douglas and Ford, Eric B and Gilliland, Ronald L and Marcy, Geoffrey W and Seager, Sara},
abstractNote = {This paper reports the detection and the measurements of occultations of the two transiting hot giant exoplanets Kepler-5b and Kepler-6b by their parent stars. The observations are obtained in the near-infrared with Warm-Spitzer Space Telescope and at optical wavelengths by combining more than a year of Kepler photometry. The investigation consists of constraining the eccentricities of these systems and of obtaining broadband emergent photometric data for individual planets. For both targets, the occultations are detected at the 3{sigma} level at each wavelength with mid-occultation times consistent with circular orbits. The brightness temperatures of these planets are deduced from the infrared observations and reach T{sub Spitzer} = 1930 {+-} 100 K and T{sub Spitzer} = 1660 {+-} 120 K for Kepler-5b and Kepler-6b, respectively. We measure optical geometric albedos A{sub g} in the Kepler bandpass and find A{sub g} = 0.12 {+-} 0.04 for Kepler-5b and A{sub g} = 0.11 {+-} 0.04 for Kepler-6b, leading to upper an limit for the Bond albedo of A{sub B} {<=} 0.17 in both cases. The observations for both planets are best described by models for which most of the incident energy is redistributed on the dayside, with only less than 10% of the absorbed stellar flux redistributed to the nightside of these planets.},
doi = {10.1088/0067-0049/197/1/11},
url = {https://www.osti.gov/biblio/22047346}, journal = {Astrophysical Journal, Supplement Series},
issn = {0067-0049},
number = 1,
volume = 197,
place = {United States},
year = {Tue Nov 01 00:00:00 EDT 2011},
month = {Tue Nov 01 00:00:00 EDT 2011}
}