TESS discovery of a sub-Neptune orbiting a mid-M dwarf TOI-2136

被引：10

作者：

Gan, Tianjun ^{[1
]}

Soubkiou, Abderahmane ^{[2
,3
,4
]}

Wang, Sharon X. ^{[1
]}

Benkhaldoun, Zouhair ^{[2
]}

Mao, Shude ^{[1
,5
]}

Artigau, Etienne ^{[6
,7
]}

Fouque, Pascal ^{[8
,9
]}

Arnold, Luc ^{[9
]}

Giacalone, Steven ^{[10
]}

Theissen, Christopher A. ^{[11
]}

Aganze, Christian ^{[11
]}

Burgasser, Adam ^{[11
]}

Collins, Karen A. ^{[12
]}

Shporer, Avi ^{[13
,14
]}

Barkaoui, Khalid ^{[15
,16
,17
]}

Ghachoui, Mourad ^{[2
,15
]}

Howell, Steve B. ^{[18
]}

Lamman, Claire ^{[12
]}

Demangeon, Olivier D. S. ^{[3
,4
]}

Burdanov, Artem ^{[16
]}

Cadieux, Charles ^{[6
]}

Chouqar, Jamila ^{[2
]}

Collins, Kevin, I ^{[19
]}

Cook, Neil J. ^{[6
]}

Delrez, Laetitia ^{[15
,20
]}

Demory, Brice-Olivier ^{[21
]}

Doyon, Rene ^{[6
,7
]}

Dransfield, Georgina ^{[22
]}

Dressing, Courtney D. ^{[10
]}

Ducrot, Elsa ^{[15
,23
]}

Fan, Jiahao ^{[24
]}

Garcia, Lionel ^{[15
]}

Gill, Holden ^{[10
]}

Gillon, Michael ^{[15
]}

Gnilka, Crystal L. ^{[18
,25
]}

Gomez Maqueo Chew, Yilen ^{[26
]}

Guenther, Maximilian N. ^{[27
]}

Henze, Christopher E. ^{[18
]}

Huang, Chelsea X. ^{[13
,14
,28
]}

Jehin, Emmanuel ^{[20
]}

Jensen, Eric L. N. ^{[29
]}

Lin, Zitao ^{[30
]}

Manset, Nadine ^{[8
]}

McCormac, James ^{[31
]}

Murray, Catriona A. ^{[32
]}

Niraula, Prajwal ^{[16
]}

Pedersen, Peter P. ^{[32
]}

Pozuelos, Francisco J. ^{[15
,20
]}

Queloz, Didier ^{[32
]}

Rackham, Benjamin, V ^{[16
]}

机构：

[1] Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China

[2] Cadi Ayyad Univ, High Energy Phys & Astrophys Lab, Oukaimeden Observ, Marrakech 644M C9G, Morocco

[3] Univ Porto, Fac Ciencias, Dept Fis & Astron, Rua Campo Alegre, P-4169007 Porto, Portugal

[4] Univ Porto, Inst Astrofis & Ciencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, Portugal

[5] Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China

[6] Univ Montreal, Dept Phys, IREX, Montreal, PQ H3C 3J7, Canada

[7] Univ Montreal, Observ Mont Megant, Montreal, PQ H3C 3J7, Canada

[8] Canada France Hawaii Telescope, 65-1238 Mamalahoa Hwy, Kamuela, HI 96743 USA

[9] Univ Toulouse, CNRS, IRAP, 14 Ave Belin, F-31400 Toulouse, France

[10] Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA

[11] Univ Calif San Diego, Ctr Astrophys & Space Sci, 9500 Gilman Dr, La Jolla, CA 92093 USA

[12] Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA

[13] MIT, Dept Phys, Cambridge, MA 02139 USA

[14] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA

[15] Univ Liege, Astrobiol Res Unit, Allee 6 Aout 19C, B-4000 Liege, Belgium

[16] MIT, Dept Earth Atmospher & Planetary Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[17] Inst Astrofis Canarias IAC, Calle Via Lactea S-N, E-38200 Tenerife, Spain

[18] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[19] George Mason Univ, 4400 Univ Dr, Fairfax, VA 22030 USA

[20] Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, Allee 6 Aout 19C, B-4000 Liege, Belgium

[21] Univ Bern, Ctr Space & Habitabil, Gesell Str 6, CH-3012 Bern, Switzerland

[22] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[23] Univ Paris, Univ Paris Saclay, CEA, F-91191 Gif Sur Yvette, France

[24] Tsinghua Univ, Sch Aerosp Engn, Beijing 100084, Peoples R China

[25] CALTECH, IPAC, NASA, Exoplanet Sci Inst, Mail Code 100-22,1200 E Calif Blvd, Pasadena, CA 91125 USA

[26] Univ Nacl Autonoma Mexico, Inst Astron, Ciudad Univ, Mexico City 04510, DF, Mexico

[27] European Space Agcy ESA, European Space Res & Technol Ctr ESTEC, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands

[28] Univ Southern Queensland, Ctr Astrophys, West St, Toowoomba, Qld 4350, Australia

[29] Swarthmore Coll, Dept Phys & Astron, Swarthmore, PA 19081 USA

[30] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[31] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[32] Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England

[33] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[34] Patashnick Voorheesville Observ, Voorheesville, NY 12186 USA

[35] MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[36] Princeton Univ, Dept Astrophys Sci, 4 Ivy Lane, Princeton, NJ 08544 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 514卷 / 03期

基金：

美国国家科学基金会; 瑞士国家科学基金会; 欧洲研究理事会; 英国科学技术设施理事会;

关键词：

planets and satellites: detection; stars: individual: TIC 336128819; TOI-2136; planetary systems; POWERED MASS-LOSS; EARTH-SIZED PLANET; RADIUS DISTRIBUTION; ERROR-CORRECTION; SUPER-EARTH; VALLEY; SYSTEM; AU; DEPENDENCE; FIELD;

D O I：

10.1093/mnras/stac1448

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the discovery of TOI-2136 b, a sub-Neptune planet transiting a nearby M4.5V-type star every 7.85 d, identified through photometric measurements from the Transiting Exoplanet Survey Satellite (TESS) mission. The host star is located 33 pc away with a radius of R-* = 0.34 +/- 0.02 R-circle dot, a mass of 0.34 +/- 0.02 M-circle dot, and an effective temperature of 3342 +/- 100 K. We estimate its stellar rotation period to be 75 +/- 5 d based on archival long-term photometry. We confirm and characterize the planet based on a series of ground-based multiwavelength photometry, high-angular-resolution imaging observations, and precise radial velocities from Canada-France-Hawaii Telescope (CFHT)/SpectroPolarimetre InfraROUge (SPIRou). Our joint analysis reveals that the planet has a radius of 2.20 +/- 0.17 R-circle plus and a mass of 6.4 +/- 2.4 M-circle plus. The mass and radius of TOI-2136 b are consistent with a broad range of compositions, from water-ice to gas-dominated worlds. TOI-2136 b falls close to the radius valley for M dwarfs predicted by thermally driven atmospheric mass-loss models, making it an interesting target for future studies of its interior structure and atmospheric properties.

引用

页码：4120 / 4139

页数：20

共 48 条

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