A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b
The water abundance in a planetary atmosphere provides a key constraint on the planet's primordial origins because water ice is expected to play an important role in the core accretion model of planet formation. However, the water content of the solar system giant planets is not well known beca...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2015
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| Online Access: | http://hdl.handle.net/1721.1/93095 https://orcid.org/0000-0002-6892-6948 |
| _version_ | 1826188036481744896 |
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| author | Kreidberg, Laura Bean, Jacob L. Desert, Jean-Michel Line, Michael R. Fortney, Jonathan J. Madhusudhan, Nikku Stevenson, Kevin B. Showman, Adam P. Charbonneau, David McCullough, Peter R. Seager, Sara Burrows, Adam Henry, Gregory W. Williamson, Michael Kataria, Tiffany Homeier, Derek |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Kreidberg, Laura Bean, Jacob L. Desert, Jean-Michel Line, Michael R. Fortney, Jonathan J. Madhusudhan, Nikku Stevenson, Kevin B. Showman, Adam P. Charbonneau, David McCullough, Peter R. Seager, Sara Burrows, Adam Henry, Gregory W. Williamson, Michael Kataria, Tiffany Homeier, Derek |
| author_sort | Kreidberg, Laura |
| collection | MIT |
| description | The water abundance in a planetary atmosphere provides a key constraint on the planet's primordial origins because water ice is expected to play an important role in the core accretion model of planet formation. However, the water content of the solar system giant planets is not well known because water is sequestered in clouds deep in their atmospheres. By contrast, short-period exoplanets have such high temperatures that their atmospheres have water in the gas phase, making it possible to measure the water abundance for these objects. We present a precise determination of the water abundance in the atmosphere of the 2 M Jup short-period exoplanet WASP-43b based on thermal emission and transmission spectroscopy measurements obtained with the Hubble Space Telescope. We find the water content is consistent with the value expected in a solar composition gas at planetary temperatures (0.4-3.5 × solar at 1σ confidence). The metallicity of WASP-43b's atmosphere suggested by this result extends the trend observed in the solar system of lower metal enrichment for higher planet masses. |
| first_indexed | 2024-09-23T07:53:37Z |
| format | Article |
| id | mit-1721.1/93095 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T07:53:37Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/930952022-09-30T00:49:54Z A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b Kreidberg, Laura Bean, Jacob L. Desert, Jean-Michel Line, Michael R. Fortney, Jonathan J. Madhusudhan, Nikku Stevenson, Kevin B. Showman, Adam P. Charbonneau, David McCullough, Peter R. Seager, Sara Burrows, Adam Henry, Gregory W. Williamson, Michael Kataria, Tiffany Homeier, Derek Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Department of Physics Seager, Sara The water abundance in a planetary atmosphere provides a key constraint on the planet's primordial origins because water ice is expected to play an important role in the core accretion model of planet formation. However, the water content of the solar system giant planets is not well known because water is sequestered in clouds deep in their atmospheres. By contrast, short-period exoplanets have such high temperatures that their atmospheres have water in the gas phase, making it possible to measure the water abundance for these objects. We present a precise determination of the water abundance in the atmosphere of the 2 M Jup short-period exoplanet WASP-43b based on thermal emission and transmission spectroscopy measurements obtained with the Hubble Space Telescope. We find the water content is consistent with the value expected in a solar composition gas at planetary temperatures (0.4-3.5 × solar at 1σ confidence). The metallicity of WASP-43b's atmosphere suggested by this result extends the trend observed in the solar system of lower metal enrichment for higher planet masses. United States. National Aeronautics and Space Administration (Space Telescope Science Institute (U.S.)) 2015-01-21T18:50:25Z 2015-01-21T18:50:25Z 2014-09 2014-08 Article http://purl.org/eprint/type/JournalArticle 2041-8213 2041-8205 http://hdl.handle.net/1721.1/93095 Kreidberg, Laura, Jacob L. Bean, Jean-Michel Desert, Michael R. Line, Jonathan J. Fortney, Nikku Madhusudhan, Kevin B. Stevenson, et al. “A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b.” The Astrophysical Journal 793, no. 2 (September 12, 2014): L27. © 2014 The American Astronomical Society https://orcid.org/0000-0002-6892-6948 en_US http://dx.doi.org/10.1088/2041-8205/793/2/l27 Astrophysical Journal. Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing American Astronomical Society |
| spellingShingle | Kreidberg, Laura Bean, Jacob L. Desert, Jean-Michel Line, Michael R. Fortney, Jonathan J. Madhusudhan, Nikku Stevenson, Kevin B. Showman, Adam P. Charbonneau, David McCullough, Peter R. Seager, Sara Burrows, Adam Henry, Gregory W. Williamson, Michael Kataria, Tiffany Homeier, Derek A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b |
| title | A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b |
| title_full | A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b |
| title_fullStr | A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b |
| title_full_unstemmed | A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b |
| title_short | A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b |
| title_sort | precise water abundance measurement for the hot jupiter wasp 43b |
| url | http://hdl.handle.net/1721.1/93095 https://orcid.org/0000-0002-6892-6948 |
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