TOI-1278 B: SPIRou Unveils a Rare Brown Dwarf Companion in Close-in Orbit around an M Dwarf

Etienne Artigau; Guillaume Hébrard; Charles Cadieux; Thomas Vandal; Neil J. Cook; René Doyon; Jonathan Gagné; Claire Moutou; Eder Martioli; Antonio Frasca; Farbod Jahandar; David Lafreniere; Lison Malo; Jean Francois Donati; Pía Cortés-Zuleta; Isabelle Boisse; Xavier Delfosse; Andres Carmona; Pascal Fouqué; Julien Morin; Jason Rowe; Giuseppe Marino; Riccardo Papini; David R. Ciardi; Michael B. Lund; Jorge H.C. Martins; Stefan Pelletier; Luc Arnold; Francois Bouchy; Thierry Forveille; Nuno C. Santos; Xavier Bonfils; Pedro Figueira; Michael Fausnaugh; George Ricker; David W. Latham; Sara Seager; Joshua N. Winn; Jon M. Jenkins; Eric B. Ting; Guillermo Torres; Joao Gomes Da Silva

doi:10.3847/1538-3881/ac096d

TOI-1278 B: SPIRou Unveils a Rare Brown Dwarf Companion in Close-in Orbit around an M Dwarf

Etienne Artigau, Guillaume Hébrard, Charles Cadieux, Thomas Vandal, Neil J. Cook, René Doyon, Jonathan Gagné, Claire Moutou, Eder Martioli, Antonio Frasca, Farbod Jahandar, David Lafreniere, Lison Malo, Jean Francois Donati, Pía Cortés-Zuleta, Isabelle Boisse, Xavier Delfosse, Andres Carmona, Pascal Fouqué, Julien MorinJason Rowe, Giuseppe Marino, Riccardo Papini, David R. Ciardi, Michael B. Lund, Jorge H.C. Martins, Stefan Pelletier, Luc Arnold, Francois Bouchy, Thierry Forveille, Nuno C. Santos, Xavier Bonfils, Pedro Figueira, Michael Fausnaugh, George Ricker, David W. Latham, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Eric B. Ting, Guillermo Torres, Joao Gomes Da Silva

Astrophysical Sciences

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

22 Scopus citations

Abstract

We present the discovery of an 18.5 ± 0.5 M Jup brown dwarf (BD) companion to the M0V star TOI-1278. The system was first identified through a percent-deep transit in Transiting Exoplanet Survey Satellite photometry; further analysis showed it to be a grazing transit of a Jupiter-sized object. Radial velocity (RV) follow-up with the SPIRou near-infrared high-resolution velocimeter and spectropolarimeter in the framework of the 300-night SPIRou Legacy Survey carried out at the Canada-France-Hawaii Telescope led to the detection of a Keplerian RV signal with a semi-amplitude of 2306 ± 10 m s-1 in phase with the 14.5 day transit period, with a slight but nonzero eccentricity. The intermediate-mass ratio (M ∗/M comp ∼ 31) is unique for having such a short separation (0.095 ± 0.001 au) among known M-dwarf systems. Interestingly, M-dwarf-BD systems with similar mass ratios exist with separations of tens to thousands of astronomical unit.

Original language	English (US)
Article number	144
Journal	Astronomical Journal
Volume	162
Issue number	4
DOIs	https://doi.org/10.3847/1538-3881/ac096d
State	Published - Oct 2021

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Brown dwarfs
M dwarf stars
Radial velocity
Transit photometry
Transits

Access to Document

10.3847/1538-3881/ac096d

Cite this

Artigau, E., Hébrard, G., Cadieux, C., Vandal, T., Cook, N. J., Doyon, R., Gagné, J., Moutou, C., Martioli, E., Frasca, A., Jahandar, F., Lafreniere, D., Malo, L., Donati, J. F., Cortés-Zuleta, P., Boisse, I., Delfosse, X., Carmona, A., Fouqué, P., ... Da Silva, J. G. (2021). TOI-1278 B: SPIRou Unveils a Rare Brown Dwarf Companion in Close-in Orbit around an M Dwarf. Astronomical Journal, 162(4), Article 144. https://doi.org/10.3847/1538-3881/ac096d

@article{85585aa3a3e34e87b49780a1bdade4a0,

title = "TOI-1278 B: SPIRou Unveils a Rare Brown Dwarf Companion in Close-in Orbit around an M Dwarf",

abstract = "We present the discovery of an 18.5 ± 0.5 M Jup brown dwarf (BD) companion to the M0V star TOI-1278. The system was first identified through a percent-deep transit in Transiting Exoplanet Survey Satellite photometry; further analysis showed it to be a grazing transit of a Jupiter-sized object. Radial velocity (RV) follow-up with the SPIRou near-infrared high-resolution velocimeter and spectropolarimeter in the framework of the 300-night SPIRou Legacy Survey carried out at the Canada-France-Hawaii Telescope led to the detection of a Keplerian RV signal with a semi-amplitude of 2306 ± 10 m s-1 in phase with the 14.5 day transit period, with a slight but nonzero eccentricity. The intermediate-mass ratio (M ∗/M comp ∼ 31) is unique for having such a short separation (0.095 ± 0.001 au) among known M-dwarf systems. Interestingly, M-dwarf-BD systems with similar mass ratios exist with separations of tens to thousands of astronomical unit.",

keywords = "Brown dwarfs, M dwarf stars, Radial velocity, Transit photometry, Transits",

author = "Etienne Artigau and Guillaume H{\'e}brard and Charles Cadieux and Thomas Vandal and Cook, {Neil J.} and Ren{\'e} Doyon and Jonathan Gagn{\'e} and Claire Moutou and Eder Martioli and Antonio Frasca and Farbod Jahandar and David Lafreniere and Lison Malo and Donati, {Jean Francois} and P{\'i}a Cort{\'e}s-Zuleta and Isabelle Boisse and Xavier Delfosse and Andres Carmona and Pascal Fouqu{\'e} and Julien Morin and Jason Rowe and Giuseppe Marino and Riccardo Papini and Ciardi, {David R.} and Lund, {Michael B.} and Martins, {Jorge H.C.} and Stefan Pelletier and Luc Arnold and Francois Bouchy and Thierry Forveille and Santos, {Nuno C.} and Xavier Bonfils and Pedro Figueira and Michael Fausnaugh and George Ricker and Latham, {David W.} and Sara Seager and Winn, {Joshua N.} and Jenkins, {Jon M.} and Ting, {Eric B.} and Guillermo Torres and {Da Silva}, {Joao Gomes}",

year = "2021",

month = oct,

doi = "10.3847/1538-3881/ac096d",

language = "English (US)",

volume = "162",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "IOP Publishing Ltd.",

number = "4",

}

Artigau, E, Hébrard, G, Cadieux, C, Vandal, T, Cook, NJ, Doyon, R, Gagné, J, Moutou, C, Martioli, E, Frasca, A, Jahandar, F, Lafreniere, D, Malo, L, Donati, JF, Cortés-Zuleta, P, Boisse, I, Delfosse, X, Carmona, A, Fouqué, P, Morin, J, Rowe, J, Marino, G, Papini, R, Ciardi, DR, Lund, MB, Martins, JHC, Pelletier, S, Arnold, L, Bouchy, F, Forveille, T, Santos, NC, Bonfils, X, Figueira, P, Fausnaugh, M, Ricker, G, Latham, DW, Seager, S, Winn, JN, Jenkins, JM, Ting, EB, Torres, G & Da Silva, JG 2021, 'TOI-1278 B: SPIRou Unveils a Rare Brown Dwarf Companion in Close-in Orbit around an M Dwarf', Astronomical Journal, vol. 162, no. 4, 144. https://doi.org/10.3847/1538-3881/ac096d

TY - JOUR

T1 - TOI-1278 B

T2 - SPIRou Unveils a Rare Brown Dwarf Companion in Close-in Orbit around an M Dwarf

AU - Artigau, Etienne

AU - Hébrard, Guillaume

AU - Cadieux, Charles

AU - Vandal, Thomas

AU - Cook, Neil J.

AU - Doyon, René

AU - Gagné, Jonathan

AU - Moutou, Claire

AU - Martioli, Eder

AU - Frasca, Antonio

AU - Jahandar, Farbod

AU - Lafreniere, David

AU - Malo, Lison

AU - Donati, Jean Francois

AU - Cortés-Zuleta, Pía

AU - Boisse, Isabelle

AU - Delfosse, Xavier

AU - Carmona, Andres

AU - Fouqué, Pascal

AU - Morin, Julien

AU - Rowe, Jason

AU - Marino, Giuseppe

AU - Papini, Riccardo

AU - Ciardi, David R.

AU - Lund, Michael B.

AU - Martins, Jorge H.C.

AU - Pelletier, Stefan

AU - Arnold, Luc

AU - Bouchy, Francois

AU - Forveille, Thierry

AU - Santos, Nuno C.

AU - Bonfils, Xavier

AU - Figueira, Pedro

AU - Fausnaugh, Michael

AU - Ricker, George

AU - Latham, David W.

AU - Seager, Sara

AU - Winn, Joshua N.

AU - Jenkins, Jon M.

AU - Ting, Eric B.

AU - Torres, Guillermo

AU - Da Silva, Joao Gomes

PY - 2021/10

Y1 - 2021/10

N2 - We present the discovery of an 18.5 ± 0.5 M Jup brown dwarf (BD) companion to the M0V star TOI-1278. The system was first identified through a percent-deep transit in Transiting Exoplanet Survey Satellite photometry; further analysis showed it to be a grazing transit of a Jupiter-sized object. Radial velocity (RV) follow-up with the SPIRou near-infrared high-resolution velocimeter and spectropolarimeter in the framework of the 300-night SPIRou Legacy Survey carried out at the Canada-France-Hawaii Telescope led to the detection of a Keplerian RV signal with a semi-amplitude of 2306 ± 10 m s-1 in phase with the 14.5 day transit period, with a slight but nonzero eccentricity. The intermediate-mass ratio (M ∗/M comp ∼ 31) is unique for having such a short separation (0.095 ± 0.001 au) among known M-dwarf systems. Interestingly, M-dwarf-BD systems with similar mass ratios exist with separations of tens to thousands of astronomical unit.

AB - We present the discovery of an 18.5 ± 0.5 M Jup brown dwarf (BD) companion to the M0V star TOI-1278. The system was first identified through a percent-deep transit in Transiting Exoplanet Survey Satellite photometry; further analysis showed it to be a grazing transit of a Jupiter-sized object. Radial velocity (RV) follow-up with the SPIRou near-infrared high-resolution velocimeter and spectropolarimeter in the framework of the 300-night SPIRou Legacy Survey carried out at the Canada-France-Hawaii Telescope led to the detection of a Keplerian RV signal with a semi-amplitude of 2306 ± 10 m s-1 in phase with the 14.5 day transit period, with a slight but nonzero eccentricity. The intermediate-mass ratio (M ∗/M comp ∼ 31) is unique for having such a short separation (0.095 ± 0.001 au) among known M-dwarf systems. Interestingly, M-dwarf-BD systems with similar mass ratios exist with separations of tens to thousands of astronomical unit.

KW - Brown dwarfs

KW - M dwarf stars

KW - Radial velocity

KW - Transit photometry

KW - Transits

UR - http://www.scopus.com/inward/record.url?scp=85116339172&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85116339172&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/ac096d

DO - 10.3847/1538-3881/ac096d

M3 - Article

AN - SCOPUS:85116339172

SN - 0004-6256

VL - 162

JO - Astronomical Journal

JF - Astronomical Journal

IS - 4

M1 - 144

ER -

TOI-1278 B: SPIRou Unveils a Rare Brown Dwarf Companion in Close-in Orbit around an M Dwarf

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this