A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS

N. Astudillo-Defru; R. Cloutier; S. X. Wang; J. Teske; R. Brahm; C. Hellier; G. Ricker; R. Vanderspek; D. Latham; S. Seager; J. N. Winn; J. M. Jenkins; K. A. Collins; K. G. Stassun; C. Ziegler; J. M. Almenara; D. R. Anderson; E. Artigau; X. Bonfils; F. Bouchy; C. Briceño; R. P. Butler; D. Charbonneau; D. M. Conti; J. Crane; I. J.M. Crossfield; M. Davies; X. Delfosse; R. F. Díaz; R. Doyon; D. Dragomir; J. D. Eastman; N. Espinoza; Z. Essack; F. Feng; P. Figueira; T. Forveille; T. Gan; A. Glidden; N. Guerrero; R. Hart; Th Henning; E. P. Horch; G. Isopi; J. S. Jenkins; A. Jordán; J. F. Kielkopf; N. Law; C. Lovis; F. Mallia; A. W. Mann; J. R. De Medeiros; C. Melo; R. E. Mennickent; L. Mignon; F. Murgas; D. A. Nusdeo; F. Pepe; H. M. Relles; M. Rose; N. C. Santos; D. Ségransan; S. Shectman; A. Shporer; J. C. Smith; P. Torres; S. Udry; J. Villasenor; J. G. Winters; G. Zhou

doi:10.1051/0004-6361/201937179

A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS

N. Astudillo-Defru, R. Cloutier, S. X. Wang, J. Teske, R. Brahm, C. Hellier, G. Ricker, R. Vanderspek, D. Latham, S. Seager, J. N. Winn, J. M. Jenkins, K. A. Collins, K. G. Stassun, C. Ziegler, J. M. Almenara, D. R. Anderson, E. Artigau, X. Bonfils, F. BouchyC. Briceño, R. P. Butler, D. Charbonneau, D. M. Conti, J. Crane, I. J.M. Crossfield, M. Davies, X. Delfosse, R. F. Díaz, R. Doyon, D. Dragomir, J. D. Eastman, N. Espinoza, Z. Essack, F. Feng, P. Figueira, T. Forveille, T. Gan, A. Glidden, N. Guerrero, R. Hart, Th Henning, E. P. Horch, G. Isopi, J. S. Jenkins, A. Jordán, J. F. Kielkopf, N. Law, C. Lovis, F. Mallia, A. W. Mann, J. R. De Medeiros, C. Melo, R. E. Mennickent, L. Mignon, F. Murgas, D. A. Nusdeo, F. Pepe, H. M. Relles, M. Rose, N. C. Santos, D. Ségransan, S. Shectman, A. Shporer, J. C. Smith, P. Torres, S. Udry, J. Villasenor, J. G. Winters, G. Zhou

Astrophysical Sciences

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

39 Scopus citations

Abstract

We report the detection of a transiting super-Earth-sized planet (R = 1.39 ± 0.09 R⊕ ) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 ± 0.02 pc. The host star was observed in the first sector of the Transiting Exoplanet Survey Satellite (TESS) mission. For confirmation and planet mass measurement purposes, this was followed up with ground-based photometry, seeing-limited and high-resolution imaging, and precise radial velocity (PRV) observations using the HARPS and Magellan/PFS spectrographs. By combining the TESS data and PRV observations, we find the mass of L 168-9 b to be 4.60 ± 0.56 M⊕ and thus the bulk density to be 1.74-0.33^+0.44 times higher than that of the Earth. The orbital eccentricity is smaller than 0.21 (95% confidence). This planet is a level one candidate for the TESS mission's scientific objective of measuring the masses of 50 small planets, and it is one of the most observationally accessible terrestrial planets for future atmospheric characterization.

Original language	English (US)
Article number	A58
Journal	Astronomy and Astrophysics
Volume	636
DOIs	https://doi.org/10.1051/0004-6361/201937179
State	Published - Apr 1 2020

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Planetary systems
Stars: individual: L 168-9
Stars: late-type
Techniques: photometric
Techniques: radial velocities

Access to Document

10.1051/0004-6361/201937179

Cite this

Astudillo-Defru, N., Cloutier, R., Wang, S. X., Teske, J., Brahm, R., Hellier, C., Ricker, G., Vanderspek, R., Latham, D., Seager, S., Winn, J. N., Jenkins, J. M., Collins, K. A., Stassun, K. G., Ziegler, C., Almenara, J. M., Anderson, D. R., Artigau, E., Bonfils, X., ... Zhou, G. (2020). A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS. Astronomy and Astrophysics, 636, Article A58. https://doi.org/10.1051/0004-6361/201937179

@article{4ce196c017e044168c29aaa02f46f682,

title = "A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS",

abstract = "We report the detection of a transiting super-Earth-sized planet (R = 1.39 ± 0.09 R⊕ ) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 ± 0.02 pc. The host star was observed in the first sector of the Transiting Exoplanet Survey Satellite (TESS) mission. For confirmation and planet mass measurement purposes, this was followed up with ground-based photometry, seeing-limited and high-resolution imaging, and precise radial velocity (PRV) observations using the HARPS and Magellan/PFS spectrographs. By combining the TESS data and PRV observations, we find the mass of L 168-9 b to be 4.60 ± 0.56 M⊕ and thus the bulk density to be 1.74-0.33+0.44 times higher than that of the Earth. The orbital eccentricity is smaller than 0.21 (95% confidence). This planet is a level one candidate for the TESS mission's scientific objective of measuring the masses of 50 small planets, and it is one of the most observationally accessible terrestrial planets for future atmospheric characterization.",

keywords = "Planetary systems, Stars: individual: L 168-9, Stars: late-type, Techniques: photometric, Techniques: radial velocities",

author = "N. Astudillo-Defru and R. Cloutier and Wang, {S. X.} and J. Teske and R. Brahm and C. Hellier and G. Ricker and R. Vanderspek and D. Latham and S. Seager and Winn, {J. N.} and Jenkins, {J. M.} and Collins, {K. A.} and Stassun, {K. G.} and C. Ziegler and Almenara, {J. M.} and Anderson, {D. R.} and E. Artigau and X. Bonfils and F. Bouchy and C. Brice{\~n}o and Butler, {R. P.} and D. Charbonneau and Conti, {D. M.} and J. Crane and Crossfield, {I. J.M.} and M. Davies and X. Delfosse and D{\'i}az, {R. F.} and R. Doyon and D. Dragomir and Eastman, {J. D.} and N. Espinoza and Z. Essack and F. Feng and P. Figueira and T. Forveille and T. Gan and A. Glidden and N. Guerrero and R. Hart and Th Henning and Horch, {E. P.} and G. Isopi and Jenkins, {J. S.} and A. Jord{\'a}n and Kielkopf, {J. F.} and N. Law and C. Lovis and F. Mallia and Mann, {A. W.} and {De Medeiros}, {J. R.} and C. Melo and Mennickent, {R. E.} and L. Mignon and F. Murgas and Nusdeo, {D. A.} and F. Pepe and Relles, {H. M.} and M. Rose and Santos, {N. C.} and D. S{\'e}gransan and S. Shectman and A. Shporer and Smith, {J. C.} and P. Torres and S. Udry and J. Villasenor and Winters, {J. G.} and G. Zhou",

note = "Publisher Copyright: {\textcopyright} ESO 2020.",

year = "2020",

month = apr,

day = "1",

doi = "10.1051/0004-6361/201937179",

language = "English (US)",

volume = "636",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Astudillo-Defru, N, Cloutier, R, Wang, SX, Teske, J, Brahm, R, Hellier, C, Ricker, G, Vanderspek, R, Latham, D, Seager, S, Winn, JN, Jenkins, JM, Collins, KA, Stassun, KG, Ziegler, C, Almenara, JM, Anderson, DR, Artigau, E, Bonfils, X, Bouchy, F, Briceño, C, Butler, RP, Charbonneau, D, Conti, DM, Crane, J, Crossfield, IJM, Davies, M, Delfosse, X, Díaz, RF, Doyon, R, Dragomir, D, Eastman, JD, Espinoza, N, Essack, Z, Feng, F, Figueira, P, Forveille, T, Gan, T, Glidden, A, Guerrero, N, Hart, R, Henning, T, Horch, EP, Isopi, G, Jenkins, JS, Jordán, A, Kielkopf, JF, Law, N, Lovis, C, Mallia, F, Mann, AW, De Medeiros, JR, Melo, C, Mennickent, RE, Mignon, L, Murgas, F, Nusdeo, DA, Pepe, F, Relles, HM, Rose, M, Santos, NC, Ségransan, D, Shectman, S, Shporer, A, Smith, JC, Torres, P, Udry, S, Villasenor, J, Winters, JG & Zhou, G 2020, 'A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS', Astronomy and Astrophysics, vol. 636, A58. https://doi.org/10.1051/0004-6361/201937179

TY - JOUR

T1 - A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS

AU - Astudillo-Defru, N.

AU - Cloutier, R.

AU - Wang, S. X.

AU - Teske, J.

AU - Brahm, R.

AU - Hellier, C.

AU - Ricker, G.

AU - Vanderspek, R.

AU - Latham, D.

AU - Seager, S.

AU - Winn, J. N.

AU - Jenkins, J. M.

AU - Collins, K. A.

AU - Stassun, K. G.

AU - Ziegler, C.

AU - Almenara, J. M.

AU - Anderson, D. R.

AU - Artigau, E.

AU - Bonfils, X.

AU - Bouchy, F.

AU - Briceño, C.

AU - Butler, R. P.

AU - Charbonneau, D.

AU - Conti, D. M.

AU - Crane, J.

AU - Crossfield, I. J.M.

AU - Davies, M.

AU - Delfosse, X.

AU - Díaz, R. F.

AU - Doyon, R.

AU - Dragomir, D.

AU - Eastman, J. D.

AU - Espinoza, N.

AU - Essack, Z.

AU - Feng, F.

AU - Figueira, P.

AU - Forveille, T.

AU - Gan, T.

AU - Glidden, A.

AU - Guerrero, N.

AU - Hart, R.

AU - Henning, Th

AU - Horch, E. P.

AU - Isopi, G.

AU - Jenkins, J. S.

AU - Jordán, A.

AU - Kielkopf, J. F.

AU - Law, N.

AU - Lovis, C.

AU - Mallia, F.

AU - Mann, A. W.

AU - De Medeiros, J. R.

AU - Melo, C.

AU - Mennickent, R. E.

AU - Mignon, L.

AU - Murgas, F.

AU - Nusdeo, D. A.

AU - Pepe, F.

AU - Relles, H. M.

AU - Rose, M.

AU - Santos, N. C.

AU - Ségransan, D.

AU - Shectman, S.

AU - Shporer, A.

AU - Smith, J. C.

AU - Torres, P.

AU - Udry, S.

AU - Villasenor, J.

AU - Winters, J. G.

AU - Zhou, G.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - We report the detection of a transiting super-Earth-sized planet (R = 1.39 ± 0.09 R⊕ ) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 ± 0.02 pc. The host star was observed in the first sector of the Transiting Exoplanet Survey Satellite (TESS) mission. For confirmation and planet mass measurement purposes, this was followed up with ground-based photometry, seeing-limited and high-resolution imaging, and precise radial velocity (PRV) observations using the HARPS and Magellan/PFS spectrographs. By combining the TESS data and PRV observations, we find the mass of L 168-9 b to be 4.60 ± 0.56 M⊕ and thus the bulk density to be 1.74-0.33+0.44 times higher than that of the Earth. The orbital eccentricity is smaller than 0.21 (95% confidence). This planet is a level one candidate for the TESS mission's scientific objective of measuring the masses of 50 small planets, and it is one of the most observationally accessible terrestrial planets for future atmospheric characterization.

AB - We report the detection of a transiting super-Earth-sized planet (R = 1.39 ± 0.09 R⊕ ) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 ± 0.02 pc. The host star was observed in the first sector of the Transiting Exoplanet Survey Satellite (TESS) mission. For confirmation and planet mass measurement purposes, this was followed up with ground-based photometry, seeing-limited and high-resolution imaging, and precise radial velocity (PRV) observations using the HARPS and Magellan/PFS spectrographs. By combining the TESS data and PRV observations, we find the mass of L 168-9 b to be 4.60 ± 0.56 M⊕ and thus the bulk density to be 1.74-0.33+0.44 times higher than that of the Earth. The orbital eccentricity is smaller than 0.21 (95% confidence). This planet is a level one candidate for the TESS mission's scientific objective of measuring the masses of 50 small planets, and it is one of the most observationally accessible terrestrial planets for future atmospheric characterization.

KW - Planetary systems

KW - Stars: individual: L 168-9

KW - Stars: late-type

KW - Techniques: photometric

KW - Techniques: radial velocities

UR - http://www.scopus.com/inward/record.url?scp=85084144642&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85084144642&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201937179

DO - 10.1051/0004-6361/201937179

M3 - Article

AN - SCOPUS:85084144642

SN - 0004-6361

VL - 636

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A58

ER -

A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this