A Transiting, Temperate Mini-Neptune Orbiting the M Dwarf TOI-1759 Unveiled by TESS
| dc.contributor.author | Espinoza, Néstor | |
| dc.contributor.author | Pallé, Enric | |
| dc.contributor.author | Kemmer, Jonas | |
| dc.contributor.author | Luque, Rafael | |
| dc.contributor.author | Barclay, Thomas | |
| dc.contributor.author | et al | |
| dc.date.accessioned | 2023-04-06T17:56:48Z | |
| dc.date.available | 2023-04-06T17:56:48Z | |
| dc.date.issued | 2022-02-16 | |
| dc.description | Authors: - Néstor Espinoza , Enric Pallé , Jonas Kemmer , Rafael Luque , José A. Caballero , Carlos Cifuentes , Enrique Herrero, , Víctor J. Sánchez Béjar, , Stephan Stock , Karan Molaverdikhani,,, , Giuseppe Morello, , Diana Kossakowski , Martin Schlecker , Pedro J. Amado , Paz Bluhm , Miriam Cortés-Contreras , Thomas Henning , Laura Kreidberg , Martin Kürster , Marina Lafarga, , Nicolas Lodieu, , Juan Carlos Morales, , Mahmoudreza Oshagh, , Vera M. Passegger,, Alexey Pavlov , Andreas Quirrenbach , Sabine Reffert , Ansgar Reiners, Ignasi Ribas, , Eloy Rodríguez , Cristina Rodríguez López , Andreas Schweitzer, Trifon Trifonov , Priyanka Chaturvedi, Stefan Dreizler, Sandra V. Jeffers, Adrian Kaminski , María José López-González , Jorge Lillo-Box , David Montes , Grzegorz Nowak, , Santos Pedraz, Siegfried Vanaverbeke,, Maria R. Zapatero Osorio, Mathias Zechmeister , Karen A. Collins , Eric Girardin, Pere Guerra, Ramon Naves, Ian J. M. Crossfield, Elisabeth C. Matthews, Steve B. Howell , David R. Ciardi , Erica Gonzales, Rachel A. Matson , Charles A. Beichman, Joshua E. Schlieder , Thomas Barclay, , Michael Vezie, Jesus Noel Villaseñor, Tansu Daylan , Ismael Mireies, Diana Dragomir , Joseph D. Twicken, , Jon Jenkins, Joshua N. Winn , David Latham , George Ricker , and Sara Seager | en_US |
| dc.description.abstract | We report the discovery and characterization of TOI-1759 b, a temperate (400 K) sub-Neptune-sized exoplanet orbiting the M dwarf TOI-1759 (TIC 408636441). TOI-1759 b was observed by TESS to transit in Sectors 16, 17, and 24, with only one transit observed per sector, creating an ambiguity regarding the orbital period of the planet candidate. Ground-based photometric observations, combined with radial-velocity measurements obtained with the CARMENES spectrograph, confirm an actual period of 18.85019 ± 0.00014 days. A joint analysis of all available photometry and radial velocities reveals a radius of 3.17 ± 0.10 R⊕ and a mass of 10.8 ± 1.5 M⊕. Combining this with the stellar properties derived for TOI-1759 (Rå = 0.597 ± 0.015 Re; Må = 0.606 ± 0.020 Me; Teff = 4065 ± 51 K), we compute a transmission spectroscopic metric (TSM) value of over 80 for the planet, making it a good target for transmission spectroscopy studies. TOI-1759 b is among the top five temperate, small exoplanets (Teq < 500 K, Rp < 4 R⊕) with the highest TSM discovered to date. Two additional signals with periods of 80 days and >200 days seem to be present in our radial velocities. While our data suggest both could arise from stellar activity, the later signal’s source and periodicity are hard to pinpoint given the ∼200 days baseline of our radial-velocity campaign with CARMENES. Longer baseline radial-velocity campaigns should be performed in order to unveil the true nature of this long-period signal. | en_US |
| dc.description.sponsorship | We acknowledge financial support from the Agencia Estatal de Investigación of the Ministerio de Ciencia, Innovación y Universidades and the ERDF through projects PID2019-109522GB-C5[1:4], PGC2018-098153-B-C33, AYA2018-84089, PID2019-107061GB-C64, PID2019- 110689RB-100, AYA2016-79425-C3-1/2/3-P, and BES2017-080769, and the Centre of Excellence “Severo Ochoa” and “María de Maeztu” awards to the Instituto de Astrofísica de Canarias (CEX2019-000920-S), Instituto de Astrofísica de Andalucía (SEV-2017-0709), and Centro de Astrobiología (MDM-2017-0737), NASA (NNX17AG24G), and the Generalitat de Catalunya/CERCA program. Data were partly collected with the 90 cm telescope at the Sierra Nevada Observatory (SNO) operated by the Instituto de Astrofí fica de Andalucí a (IAA, CSIC). We acknowledge the telescope operators from the Sierra Nevada Observatory for their support. G.M. has received funding from the European Unionʼs Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No 895525. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. We acknowledge the use of public TESS data from pipelines at the TESS Science Office and at the TESS Science Processing Operations Center. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.3847/1538-3881/ac4af0/meta | en_US |
| dc.format.extent | 15 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2xmks-vdfo | |
| dc.identifier.citation | Espinoza, Néstor, et al. "A Transiting, Temperate Mini-Neptune Orbiting the M Dwarf TOI-1759 Unveiled by TESS" The Astronomical Journal 163, no. 3 (16 Feb, 2023). Https://doi.org/10.3847/1538-3881/ac4af0. | en_US |
| dc.identifier.uri | https://doi.org/10.3847/1538-3881/ac4af0 | |
| dc.identifier.uri | http://hdl.handle.net/11603/27424 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | AAS | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | en_US |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | A Transiting, Temperate Mini-Neptune Orbiting the M Dwarf TOI-1759 Unveiled by TESS | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0001-7139-2724 | en_US |