A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs: Color validation of TOI-4479b and TOI-2081b

E. Esparza-Borges; H. Parviainen; F. Murgas; E. Pallé; A. Maas; G. Morello; M. R. Zapatero-Osorio; K. Barkaoui; N. Narita; A. Fukui; N. Casasayas-Barris; M. Oshagh; N. Crouzet; D. Galán; G. E. Fernández; T. Kagetani; K. Kawauchi; T. Kodama; J. Korth; N. Kusakabe; A. Laza-Ramos; R. Luque; J. Livingston; A. Madrigal-Aguado; M. Mori; J. Orell-Miquel; M. Puig-Subirà; M. Stangret; Y. Terada; N. Watanabe; Y. Zou; A. Baliga Savel; A. A. Belinski; K. Collins; C. D. Dressing; S. Giacalone; H. Gill; M. V. Goliguzova; M. Ikoma; J. M. Jenkins; M. Tamura; J. D. Twicken; G. R. Ricker; R. P. Schwarz; S. Seager; A. Shporer; R. Vanderspek; J. Winn

doi:10.1051/0004-6361/202243731

A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs: Color validation of TOI-4479b and TOI-2081b

E. Esparza-Borges, H. Parviainen, F. Murgas, E. Pallé, A. Maas, G. Morello, M. R. Zapatero-Osorio, K. Barkaoui, N. Narita, A. Fukui, N. Casasayas-Barris, M. Oshagh, N. Crouzet, D. Galán, G. E. Fernández, T. Kagetani, K. Kawauchi, T. Kodama, J. Korth, N. KusakabeA. Laza-Ramos, R. Luque, J. Livingston, A. Madrigal-Aguado, M. Mori, J. Orell-Miquel, M. Puig-Subirà, M. Stangret, Y. Terada, N. Watanabe, Y. Zou, A. Baliga Savel, A. A. Belinski, K. Collins, C. D. Dressing, S. Giacalone, H. Gill, M. V. Goliguzova, M. Ikoma, J. M. Jenkins, M. Tamura, J. D. Twicken, G. R. Ricker, R. P. Schwarz, S. Seager, A. Shporer, R. Vanderspek, J. Winn

Astrophysical Sciences

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Aims. We report the discovery and validation of two TESS exoplanets orbiting faint M dwarfs: TOI-4479b and TOI-2081b. Methods. We jointly analyzed space (TESS mission) and ground-based (MuSCAT2, MuSCAT3 and SINISTRO instruments) light curves using our multicolor photometry transit analysis pipeline. This allowed us to compute contamination limits for both candidates and validate them as planet-sized companions. Results. We found TOI-4479b to be a sub-Neptune-sized planet (Rp = 2.82-0.63+0.65 R⊕) and TOI-2081b to be a super-Earth-sized planet (Rp = 2.04-0.54+0.50 R⊕). Furthermore, we obtained that TOI-4479b, with a short orbital period of 1.15890-0.00001+0.00002 days, lies within the Neptune desert and is in fact the largest nearly ultra-short period planet around an M dwarf known to date. Conclusions. These results make TOI-4479b rare among the currently known exoplanet population of M dwarf stars and an especially interesting target for spectroscopic follow-up and future studies of planet formation and evolution.

Original language	English (US)
Article number	A10
Journal	Astronomy and Astrophysics
Volume	666
DOIs	https://doi.org/10.1051/0004-6361/202243731
State	Published - Oct 1 2022

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Methods: observational
Planets and satellites: detection
Planets and satellites: general
Planets and satellites: individual: TOI-2081b
Planets and satellites: individual: TOI-4479b
Techniques: photometric

Access to Document

10.1051/0004-6361/202243731

Cite this

Esparza-Borges, E., Parviainen, H., Murgas, F., Pallé, E., Maas, A., Morello, G., Zapatero-Osorio, M. R., Barkaoui, K., Narita, N., Fukui, A., Casasayas-Barris, N., Oshagh, M., Crouzet, N., Galán, D., Fernández, G. E., Kagetani, T., Kawauchi, K., Kodama, T., Korth, J., ... Winn, J. (2022). A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs: Color validation of TOI-4479b and TOI-2081b. Astronomy and Astrophysics, 666, Article A10. https://doi.org/10.1051/0004-6361/202243731

@article{bea793060bbb4c039ed50e794815c7be,

title = "A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs: Color validation of TOI-4479b and TOI-2081b",

abstract = "Aims. We report the discovery and validation of two TESS exoplanets orbiting faint M dwarfs: TOI-4479b and TOI-2081b. Methods. We jointly analyzed space (TESS mission) and ground-based (MuSCAT2, MuSCAT3 and SINISTRO instruments) light curves using our multicolor photometry transit analysis pipeline. This allowed us to compute contamination limits for both candidates and validate them as planet-sized companions. Results. We found TOI-4479b to be a sub-Neptune-sized planet (Rp = 2.82-0.63+0.65 R⊕) and TOI-2081b to be a super-Earth-sized planet (Rp = 2.04-0.54+0.50 R⊕). Furthermore, we obtained that TOI-4479b, with a short orbital period of 1.15890-0.00001+0.00002 days, lies within the Neptune desert and is in fact the largest nearly ultra-short period planet around an M dwarf known to date. Conclusions. These results make TOI-4479b rare among the currently known exoplanet population of M dwarf stars and an especially interesting target for spectroscopic follow-up and future studies of planet formation and evolution.",

keywords = "Methods: observational, Planets and satellites: detection, Planets and satellites: general, Planets and satellites: individual: TOI-2081b, Planets and satellites: individual: TOI-4479b, Techniques: photometric",

author = "E. Esparza-Borges and H. Parviainen and F. Murgas and E. Pall{\'e} and A. Maas and G. Morello and Zapatero-Osorio, {M. R.} and K. Barkaoui and N. Narita and A. Fukui and N. Casasayas-Barris and M. Oshagh and N. Crouzet and D. Gal{\'a}n and Fern{\'a}ndez, {G. E.} and T. Kagetani and K. Kawauchi and T. Kodama and J. Korth and N. Kusakabe and A. Laza-Ramos and R. Luque and J. Livingston and A. Madrigal-Aguado and M. Mori and J. Orell-Miquel and M. Puig-Subir{\`a} and M. Stangret and Y. Terada and N. Watanabe and Y. Zou and {Baliga Savel}, A. and Belinski, {A. A.} and K. Collins and Dressing, {C. D.} and S. Giacalone and H. Gill and Goliguzova, {M. V.} and M. Ikoma and Jenkins, {J. M.} and M. Tamura and Twicken, {J. D.} and Ricker, {G. R.} and Schwarz, {R. P.} and S. Seager and A. Shporer and R. Vanderspek and J. Winn",

note = "Publisher Copyright: {\textcopyright} ",

year = "2022",

month = oct,

day = "1",

doi = "10.1051/0004-6361/202243731",

language = "English (US)",

volume = "666",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Esparza-Borges, E, Parviainen, H, Murgas, F, Pallé, E, Maas, A, Morello, G, Zapatero-Osorio, MR, Barkaoui, K, Narita, N, Fukui, A, Casasayas-Barris, N, Oshagh, M, Crouzet, N, Galán, D, Fernández, GE, Kagetani, T, Kawauchi, K, Kodama, T, Korth, J, Kusakabe, N, Laza-Ramos, A, Luque, R, Livingston, J, Madrigal-Aguado, A, Mori, M, Orell-Miquel, J, Puig-Subirà, M, Stangret, M, Terada, Y, Watanabe, N, Zou, Y, Baliga Savel, A, Belinski, AA, Collins, K, Dressing, CD, Giacalone, S, Gill, H, Goliguzova, MV, Ikoma, M, Jenkins, JM, Tamura, M, Twicken, JD, Ricker, GR, Schwarz, RP, Seager, S, Shporer, A, Vanderspek, R & Winn, J 2022, 'A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs: Color validation of TOI-4479b and TOI-2081b', Astronomy and Astrophysics, vol. 666, A10. https://doi.org/10.1051/0004-6361/202243731

TY - JOUR

T1 - A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs

T2 - Color validation of TOI-4479b and TOI-2081b

AU - Esparza-Borges, E.

AU - Parviainen, H.

AU - Murgas, F.

AU - Pallé, E.

AU - Maas, A.

AU - Morello, G.

AU - Zapatero-Osorio, M. R.

AU - Barkaoui, K.

AU - Narita, N.

AU - Fukui, A.

AU - Casasayas-Barris, N.

AU - Oshagh, M.

AU - Crouzet, N.

AU - Galán, D.

AU - Fernández, G. E.

AU - Kagetani, T.

AU - Kawauchi, K.

AU - Kodama, T.

AU - Korth, J.

AU - Kusakabe, N.

AU - Laza-Ramos, A.

AU - Luque, R.

AU - Livingston, J.

AU - Madrigal-Aguado, A.

AU - Mori, M.

AU - Orell-Miquel, J.

AU - Puig-Subirà, M.

AU - Stangret, M.

AU - Terada, Y.

AU - Watanabe, N.

AU - Zou, Y.

AU - Baliga Savel, A.

AU - Belinski, A. A.

AU - Collins, K.

AU - Dressing, C. D.

AU - Giacalone, S.

AU - Gill, H.

AU - Goliguzova, M. V.

AU - Ikoma, M.

AU - Jenkins, J. M.

AU - Tamura, M.

AU - Twicken, J. D.

AU - Ricker, G. R.

AU - Schwarz, R. P.

AU - Seager, S.

AU - Shporer, A.

AU - Vanderspek, R.

AU - Winn, J.

PY - 2022/10/1

Y1 - 2022/10/1

N2 - Aims. We report the discovery and validation of two TESS exoplanets orbiting faint M dwarfs: TOI-4479b and TOI-2081b. Methods. We jointly analyzed space (TESS mission) and ground-based (MuSCAT2, MuSCAT3 and SINISTRO instruments) light curves using our multicolor photometry transit analysis pipeline. This allowed us to compute contamination limits for both candidates and validate them as planet-sized companions. Results. We found TOI-4479b to be a sub-Neptune-sized planet (Rp = 2.82-0.63+0.65 R⊕) and TOI-2081b to be a super-Earth-sized planet (Rp = 2.04-0.54+0.50 R⊕). Furthermore, we obtained that TOI-4479b, with a short orbital period of 1.15890-0.00001+0.00002 days, lies within the Neptune desert and is in fact the largest nearly ultra-short period planet around an M dwarf known to date. Conclusions. These results make TOI-4479b rare among the currently known exoplanet population of M dwarf stars and an especially interesting target for spectroscopic follow-up and future studies of planet formation and evolution.

AB - Aims. We report the discovery and validation of two TESS exoplanets orbiting faint M dwarfs: TOI-4479b and TOI-2081b. Methods. We jointly analyzed space (TESS mission) and ground-based (MuSCAT2, MuSCAT3 and SINISTRO instruments) light curves using our multicolor photometry transit analysis pipeline. This allowed us to compute contamination limits for both candidates and validate them as planet-sized companions. Results. We found TOI-4479b to be a sub-Neptune-sized planet (Rp = 2.82-0.63+0.65 R⊕) and TOI-2081b to be a super-Earth-sized planet (Rp = 2.04-0.54+0.50 R⊕). Furthermore, we obtained that TOI-4479b, with a short orbital period of 1.15890-0.00001+0.00002 days, lies within the Neptune desert and is in fact the largest nearly ultra-short period planet around an M dwarf known to date. Conclusions. These results make TOI-4479b rare among the currently known exoplanet population of M dwarf stars and an especially interesting target for spectroscopic follow-up and future studies of planet formation and evolution.

KW - Methods: observational

KW - Planets and satellites: detection

KW - Planets and satellites: general

KW - Planets and satellites: individual: TOI-2081b

KW - Planets and satellites: individual: TOI-4479b

KW - Techniques: photometric

UR - http://www.scopus.com/inward/record.url?scp=85141010423&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85141010423&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/202243731

DO - 10.1051/0004-6361/202243731

M3 - Article

AN - SCOPUS:85141010423

SN - 0004-6361

VL - 666

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A10

ER -

A hot sub-Neptune in the desert and a temperate super-Earth around faint M dwarfs: Color validation of TOI-4479b and TOI-2081b

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this