TESS delivers its first Earth-sized planet and a warm sub-Neptune
© 2019. The American Astronomical Society. All rights reserved.. The future of exoplanet science is bright, as Transiting Exoplanet Survey Satellite (TESS) once again demonstrates with the discovery of its longest-period confirmed planet to date. We hereby present HD 21749b (TOI 186.01), a sub-Neptu...
| Main Authors: | , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Astronomical Society
2020
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| Online Access: | https://hdl.handle.net/1721.1/124719 |
| _version_ | 1826194212779982848 |
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| author | Dragomir, Diana Günther, Maximilian N. Burt, Jennifer A. Huang, Chelsea Matthews, Elisabeth Ricker, George R. Vanderspek, Roland K. Seager, Sara Francis, James Goeke, Robert F. Sha, Lizhou Shporer, Avi Garcia Soto, Aylin Villanueva, Steven Zhan, Zhuchang |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Dragomir, Diana Günther, Maximilian N. Burt, Jennifer A. Huang, Chelsea Matthews, Elisabeth Ricker, George R. Vanderspek, Roland K. Seager, Sara Francis, James Goeke, Robert F. Sha, Lizhou Shporer, Avi Garcia Soto, Aylin Villanueva, Steven Zhan, Zhuchang |
| author_sort | Dragomir, Diana |
| collection | MIT |
| description | © 2019. The American Astronomical Society. All rights reserved.. The future of exoplanet science is bright, as Transiting Exoplanet Survey Satellite (TESS) once again demonstrates with the discovery of its longest-period confirmed planet to date. We hereby present HD 21749b (TOI 186.01), a sub-Neptune in a 36 day orbit around a bright (V = 8.1) nearby (16 pc) K4.5 dwarf. TESS measures HD 21749b to be R ⊕, and combined archival and follow-up precision radial velocity data put the mass of the planet at M ⊕. HD 21749b contributes to the TESS Level 1 Science Requirement of providing 50 transiting planets smaller than 4 R ⊕ with measured masses. Furthermore, we report the discovery of HD 21749c (TOI 186.02), the first Earth-sized () planet from TESS. The HD 21749 system is a prime target for comparative studies of planetary composition and architecture in multi-planet systems. |
| first_indexed | 2024-09-23T09:52:20Z |
| format | Article |
| id | mit-1721.1/124719 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:52:20Z |
| publishDate | 2020 |
| publisher | American Astronomical Society |
| record_format | dspace |
| spelling | mit-1721.1/1247192022-09-30T17:23:34Z TESS delivers its first Earth-sized planet and a warm sub-Neptune Dragomir, Diana Günther, Maximilian N. Burt, Jennifer A. Huang, Chelsea Matthews, Elisabeth Ricker, George R. Vanderspek, Roland K. Seager, Sara Francis, James Goeke, Robert F. Sha, Lizhou Shporer, Avi Garcia Soto, Aylin Villanueva, Steven Zhan, Zhuchang Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Department of Aeronautics and Astronautics MIT Kavli Institute for Astrophysics and Space Research © 2019. The American Astronomical Society. All rights reserved.. The future of exoplanet science is bright, as Transiting Exoplanet Survey Satellite (TESS) once again demonstrates with the discovery of its longest-period confirmed planet to date. We hereby present HD 21749b (TOI 186.01), a sub-Neptune in a 36 day orbit around a bright (V = 8.1) nearby (16 pc) K4.5 dwarf. TESS measures HD 21749b to be R ⊕, and combined archival and follow-up precision radial velocity data put the mass of the planet at M ⊕. HD 21749b contributes to the TESS Level 1 Science Requirement of providing 50 transiting planets smaller than 4 R ⊕ with measured masses. Furthermore, we report the discovery of HD 21749c (TOI 186.02), the first Earth-sized () planet from TESS. The HD 21749 system is a prime target for comparative studies of planetary composition and architecture in multi-planet systems. NASA Hubble Fellowship (grant no. HST-HF2-51372.001-A) NASA Hubble Fellowship (grant no. HST-HF2-51399.001-A) 2020-04-17T15:02:46Z 2020-04-17T15:02:46Z 2019-04 2020-04-09T16:37:00Z Article http://purl.org/eprint/type/JournalArticle 2041-8213 2041-8205 https://hdl.handle.net/1721.1/124719 Dragomir, Diana, et al., "TESS delivers its first Earth-sized planet and a warm sub-Neptune." Astrophysical journal. Letters 875, 2 (April 2019): letter 7 doi 10.3847/2041-8213/AB12ED ©2019 Author(s) en 10.3847/2041-8213/AB12ED 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 American Astronomical Society The American Astronomical Society |
| spellingShingle | Dragomir, Diana Günther, Maximilian N. Burt, Jennifer A. Huang, Chelsea Matthews, Elisabeth Ricker, George R. Vanderspek, Roland K. Seager, Sara Francis, James Goeke, Robert F. Sha, Lizhou Shporer, Avi Garcia Soto, Aylin Villanueva, Steven Zhan, Zhuchang TESS delivers its first Earth-sized planet and a warm sub-Neptune |
| title | TESS delivers its first Earth-sized planet and a warm sub-Neptune |
| title_full | TESS delivers its first Earth-sized planet and a warm sub-Neptune |
| title_fullStr | TESS delivers its first Earth-sized planet and a warm sub-Neptune |
| title_full_unstemmed | TESS delivers its first Earth-sized planet and a warm sub-Neptune |
| title_short | TESS delivers its first Earth-sized planet and a warm sub-Neptune |
| title_sort | tess delivers its first earth sized planet and a warm sub neptune |
| url | https://hdl.handle.net/1721.1/124719 |
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