Debris Disks can Contaminate Mid-Infrared Exoplanet Spectra: Evidence for a Circumstellar Debris Disk around Exoplanet Host WASP-39
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866914823359430656 |
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| author | Flagg, Laura Weinberger, Alycia J. Bell, Taylor J. Welbanks, Luis Morello, Giuseppe Powell, Diana Bean, Jacob L. Blecic, Jasmina Crouzet, Nicolas Gao, Peter Inglis, Julie Kirk, James Lopez-Morales, Mercedes Molaverdikhani, Karan Nikolov, Nikolay Oza, Apurva V. Rackham, Benjamin V. Redfield, Seth Tsai, Shang-Min Jayawardhana, Ray Kreidberg, Laura Nixon, Matthew C. Stevenson, Kevin B. Turner, Jake D. |
| author_facet | Flagg, Laura Weinberger, Alycia J. Bell, Taylor J. Welbanks, Luis Morello, Giuseppe Powell, Diana Bean, Jacob L. Blecic, Jasmina Crouzet, Nicolas Gao, Peter Inglis, Julie Kirk, James Lopez-Morales, Mercedes Molaverdikhani, Karan Nikolov, Nikolay Oza, Apurva V. Rackham, Benjamin V. Redfield, Seth Tsai, Shang-Min Jayawardhana, Ray Kreidberg, Laura Nixon, Matthew C. Stevenson, Kevin B. Turner, Jake D. |
| contents | The signal from a transiting planet can be diluted by astrophysical contamination. In the case of circumstellar debris disks, this contamination could start in the mid-infrared and vary as a function of wavelength, which would then change the observed transmission spectrum for any planet in the system. The MIRI/LRS WASP-39b transmission spectrum shows an unexplained dip starting at $\sim$10 $μ$m that could be caused by astrophysical contamination. The spectral energy distribution displays excess flux at similar levels to that which are needed to create the dip in the transmission spectrum. In this article, we show that this dip is consistent with the presence of a bright circumstellar debris disk, at a distance of $>$2 au. We discuss how a circumstellar debris disk like that could affect the atmosphere of WASP-39b. We also show that even faint debris disks can be a source of contamination in MIRI exoplanet spectra. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_02305 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Debris Disks can Contaminate Mid-Infrared Exoplanet Spectra: Evidence for a Circumstellar Debris Disk around Exoplanet Host WASP-39 Flagg, Laura Weinberger, Alycia J. Bell, Taylor J. Welbanks, Luis Morello, Giuseppe Powell, Diana Bean, Jacob L. Blecic, Jasmina Crouzet, Nicolas Gao, Peter Inglis, Julie Kirk, James Lopez-Morales, Mercedes Molaverdikhani, Karan Nikolov, Nikolay Oza, Apurva V. Rackham, Benjamin V. Redfield, Seth Tsai, Shang-Min Jayawardhana, Ray Kreidberg, Laura Nixon, Matthew C. Stevenson, Kevin B. Turner, Jake D. Earth and Planetary Astrophysics Solar and Stellar Astrophysics The signal from a transiting planet can be diluted by astrophysical contamination. In the case of circumstellar debris disks, this contamination could start in the mid-infrared and vary as a function of wavelength, which would then change the observed transmission spectrum for any planet in the system. The MIRI/LRS WASP-39b transmission spectrum shows an unexplained dip starting at $\sim$10 $μ$m that could be caused by astrophysical contamination. The spectral energy distribution displays excess flux at similar levels to that which are needed to create the dip in the transmission spectrum. In this article, we show that this dip is consistent with the presence of a bright circumstellar debris disk, at a distance of $>$2 au. We discuss how a circumstellar debris disk like that could affect the atmosphere of WASP-39b. We also show that even faint debris disks can be a source of contamination in MIRI exoplanet spectra. |
| title | Debris Disks can Contaminate Mid-Infrared Exoplanet Spectra: Evidence for a Circumstellar Debris Disk around Exoplanet Host WASP-39 |
| topic | Earth and Planetary Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2406.02305 |