Spitzer Transit Follow-up of Planet Candidates from the K2 Mission
© 2019. The American Astronomical Society. All rights reserved. We present precision 4.5 mm Spitzer transit photometry of eight planet candidates discovered by the K2 mission: K2-52 b, K2-53 b, EPIC 205084841.01, K2-289 b, K2-174 b, K2-87 b, K2-90 b, and K2-124 b. The sample includes four sub-Neptu...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Astronomical Society
2021
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| Online Access: | https://hdl.handle.net/1721.1/132401 |
| _version_ | 1826196975662399488 |
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| author | Livingston, John H Crossfield, Ian JM Werner, Michael W Gorjian, Varoujan Petigura, Erik A Ciardi, David R Dressing, Courtney D Fulton, Benjamin J Hirano, Teruyuki Schlieder, Joshua E Sinukoff, Evan Kosiarek, Molly Akeson, Rachel Beichman, Charles A Benneke, Björn Christiansen, Jessie L Hansen, Bradley MS Howard, Andrew W Isaacson, Howard Knutson, Heather A Krick, Jessica Martinez, Arturo O Sato, Bun’ei Tamura, Motohide |
| author_facet | Livingston, John H Crossfield, Ian JM Werner, Michael W Gorjian, Varoujan Petigura, Erik A Ciardi, David R Dressing, Courtney D Fulton, Benjamin J Hirano, Teruyuki Schlieder, Joshua E Sinukoff, Evan Kosiarek, Molly Akeson, Rachel Beichman, Charles A Benneke, Björn Christiansen, Jessie L Hansen, Bradley MS Howard, Andrew W Isaacson, Howard Knutson, Heather A Krick, Jessica Martinez, Arturo O Sato, Bun’ei Tamura, Motohide |
| author_sort | Livingston, John H |
| collection | MIT |
| description | © 2019. The American Astronomical Society. All rights reserved. We present precision 4.5 mm Spitzer transit photometry of eight planet candidates discovered by the K2 mission: K2-52 b, K2-53 b, EPIC 205084841.01, K2-289 b, K2-174 b, K2-87 b, K2-90 b, and K2-124 b. The sample includes four sub-Neptunes and two sub-Saturns, with radii between 2.6 and 18 R ® and equilibrium temperatures between 440 and 2000 K. In this paper we identify several targets of potential interest for future characterization studies, demonstrate the utility of transit follow-up observations for planet validation and ephemeris refinement, and present new imaging and spectroscopy data. Our simultaneous analysis of the K2 and Spitzer light curves yields improved estimates of the planet radii and multiwavelength information that helps validate their planetary nature, including the previously unvalidated candidate EPIC 205686202.01 (K2-289 b). Our Spitzer observations yield an order-of-magnitude increase in ephemeris precision, thus paving the way for efficient future study of these interesting systems by reducing the typical transit timing uncertainty in mid-2021 from several hours to a dozen or so minutes. K2-53 b, K2-289 b, K2-174 b, K2-87 b, and K2-90 b are promising radial velocity (RV) targets given the performance of spectrographs available today or in development, and the M3V star K2-124 hosts a temperate sub-Neptune that is potentially a good target for both RV and atmospheric characterization studies. |
| first_indexed | 2024-09-23T10:40:30Z |
| format | Article |
| id | mit-1721.1/132401 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:40:30Z |
| publishDate | 2021 |
| publisher | American Astronomical Society |
| record_format | dspace |
| spelling | mit-1721.1/1324012021-09-21T03:48:27Z Spitzer Transit Follow-up of Planet Candidates from the K2 Mission Livingston, John H Crossfield, Ian JM Werner, Michael W Gorjian, Varoujan Petigura, Erik A Ciardi, David R Dressing, Courtney D Fulton, Benjamin J Hirano, Teruyuki Schlieder, Joshua E Sinukoff, Evan Kosiarek, Molly Akeson, Rachel Beichman, Charles A Benneke, Björn Christiansen, Jessie L Hansen, Bradley MS Howard, Andrew W Isaacson, Howard Knutson, Heather A Krick, Jessica Martinez, Arturo O Sato, Bun’ei Tamura, Motohide © 2019. The American Astronomical Society. All rights reserved. We present precision 4.5 mm Spitzer transit photometry of eight planet candidates discovered by the K2 mission: K2-52 b, K2-53 b, EPIC 205084841.01, K2-289 b, K2-174 b, K2-87 b, K2-90 b, and K2-124 b. The sample includes four sub-Neptunes and two sub-Saturns, with radii between 2.6 and 18 R ® and equilibrium temperatures between 440 and 2000 K. In this paper we identify several targets of potential interest for future characterization studies, demonstrate the utility of transit follow-up observations for planet validation and ephemeris refinement, and present new imaging and spectroscopy data. Our simultaneous analysis of the K2 and Spitzer light curves yields improved estimates of the planet radii and multiwavelength information that helps validate their planetary nature, including the previously unvalidated candidate EPIC 205686202.01 (K2-289 b). Our Spitzer observations yield an order-of-magnitude increase in ephemeris precision, thus paving the way for efficient future study of these interesting systems by reducing the typical transit timing uncertainty in mid-2021 from several hours to a dozen or so minutes. K2-53 b, K2-289 b, K2-174 b, K2-87 b, and K2-90 b are promising radial velocity (RV) targets given the performance of spectrographs available today or in development, and the M3V star K2-124 hosts a temperate sub-Neptune that is potentially a good target for both RV and atmospheric characterization studies. 2021-09-20T18:22:14Z 2021-09-20T18:22:14Z 2020-10-19T18:03:27Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/132401 en 10.3847/1538-3881/AAFF69 Astronomical Journal 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 | Livingston, John H Crossfield, Ian JM Werner, Michael W Gorjian, Varoujan Petigura, Erik A Ciardi, David R Dressing, Courtney D Fulton, Benjamin J Hirano, Teruyuki Schlieder, Joshua E Sinukoff, Evan Kosiarek, Molly Akeson, Rachel Beichman, Charles A Benneke, Björn Christiansen, Jessie L Hansen, Bradley MS Howard, Andrew W Isaacson, Howard Knutson, Heather A Krick, Jessica Martinez, Arturo O Sato, Bun’ei Tamura, Motohide Spitzer Transit Follow-up of Planet Candidates from the K2 Mission |
| title | Spitzer Transit Follow-up of Planet Candidates from the K2 Mission |
| title_full | Spitzer Transit Follow-up of Planet Candidates from the K2 Mission |
| title_fullStr | Spitzer Transit Follow-up of Planet Candidates from the K2 Mission |
| title_full_unstemmed | Spitzer Transit Follow-up of Planet Candidates from the K2 Mission |
| title_short | Spitzer Transit Follow-up of Planet Candidates from the K2 Mission |
| title_sort | spitzer transit follow up of planet candidates from the k2 mission |
| url | https://hdl.handle.net/1721.1/132401 |
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