| _version_ |
1811093766885343232
|
| collection |
MIT
|
| description |
© 2020 The Author(s). The Neptune desert is a feature seen in the radius-period plane, whereby a notable dearth of short period, Neptune-like planets is found. Here, we report the Transiting Exoplanet Survey Satellite (TESS) discovery of a new short-period planet in the Neptune desert, orbiting the G-type dwarf TYC8003-1117-1 (TOI-132). TESS photometry shows transit-like dips at the level of ∼1400 ppm occurring every ∼2.11 d. High-precision radial velocity follow-up with High Accuracy Radial Velocity Planet Searcher confirmed the planetary nature of the transit signal and provided a semi-amplitude radial velocity variation of 11.38+0.84-0.85 ms-1, which, when combined with the stellar mass of 0.97 ± 0.06 M⊙, provides a planetary mass of 22.40+1.90-1.92 M⊕. Modelling the TESS light curve returns a planet radius of 3.42+0.13-0.14 R⊕, and therefore the planet bulk density is found to be 3.08+0.44-0.46 g cm-3. Planet structure models suggest that the bulk of the planet mass is in the form of a rocky core, with an atmospheric mass fraction of 4.3+1.2-2.3 per cent. TOI-132 b is a TESS Level 1 Science Requirement candidate, and therefore priority follow-up will allow the search for additional planets in the system, whilst helping to constrain low-mass planet formation and evolution models, particularly valuable for better understanding of the Neptune desert.
|
| first_indexed |
2024-09-23T15:50:19Z
|
| format |
Article
|
| id |
mit-1721.1/135560
|
| institution |
Massachusetts Institute of Technology
|
| language |
English
|
| last_indexed |
2024-09-23T15:50:19Z
|
| publishDate |
2021
|
| publisher |
Oxford University Press (OUP)
|
| record_format |
dspace
|
| spelling |
mit-1721.1/1355602022-04-01T17:27:46Z TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★ © 2020 The Author(s). The Neptune desert is a feature seen in the radius-period plane, whereby a notable dearth of short period, Neptune-like planets is found. Here, we report the Transiting Exoplanet Survey Satellite (TESS) discovery of a new short-period planet in the Neptune desert, orbiting the G-type dwarf TYC8003-1117-1 (TOI-132). TESS photometry shows transit-like dips at the level of ∼1400 ppm occurring every ∼2.11 d. High-precision radial velocity follow-up with High Accuracy Radial Velocity Planet Searcher confirmed the planetary nature of the transit signal and provided a semi-amplitude radial velocity variation of 11.38+0.84-0.85 ms-1, which, when combined with the stellar mass of 0.97 ± 0.06 M⊙, provides a planetary mass of 22.40+1.90-1.92 M⊕. Modelling the TESS light curve returns a planet radius of 3.42+0.13-0.14 R⊕, and therefore the planet bulk density is found to be 3.08+0.44-0.46 g cm-3. Planet structure models suggest that the bulk of the planet mass is in the form of a rocky core, with an atmospheric mass fraction of 4.3+1.2-2.3 per cent. TOI-132 b is a TESS Level 1 Science Requirement candidate, and therefore priority follow-up will allow the search for additional planets in the system, whilst helping to constrain low-mass planet formation and evolution models, particularly valuable for better understanding of the Neptune desert. 2021-10-27T20:24:01Z 2021-10-27T20:24:01Z 2020 2020-05-05T18:33:29Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/135560 en 10.1093/mnras/staa277 Monthly Notices of the Royal Astronomical Society Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Oxford University Press (OUP) arXiv
|
| spellingShingle |
TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★
|
| title |
TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★
|
| title_full |
TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★
|
| title_fullStr |
TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★
|
| title_full_unstemmed |
TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★
|
| title_short |
TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★
|
| title_sort |
toi 132 b a short period planet in the neptune desert transiting a v 11 3 g type star★
|
| url |
https://hdl.handle.net/1721.1/135560
|