The CARMENES search for exoplanets around M dwarfs: LP 714-47 b (TOI 442.01): Populating the Neptune desert

S. Dreizler; I. J.M. Crossfield; D. Kossakowski; P. Plavchan; S. V. Jeffers; J. Kemmer; R. Luque; N. Espinoza; E. Pallé; K. Stassun; E. Matthews; B. Cale; J. A. Caballero; M. Schlecker; J. Lillo-Box; M. Zechmeister; S. Lalitha; A. Reiners; A. Soubkiou; B. Bitsch; M. R. Zapatero Osorio; P. Chaturvedi; A. P. Hatzes; G. Ricker; R. Vanderspek; D. W. Latham; S. Seager; J. Winn; J. M. Jenkins; J. Aceituno; P. J. Amado; K. Barkaoui; M. Barbieri; N. M. Batalha; F. F. Bauer; B. Benneke; Z. Benkhaldoun; C. Beichman; J. Berberian; J. Burt; R. P. Butler; D. A. Caldwell; A. Chintada; A. Chontos; J. L. Christiansen; D. R. Ciardi; C. Cifuentes; K. A. Collins; K. I. Collins; D. Combs; M. Cortés-Contreras; J. D. Crane; T. Daylan; D. Dragomir; E. Esparza-Borges; P. Evans; F. Feng; E. E. Flowers; A. Fukui; B. Fulton; E. Furlan; E. Gaidos; C. Geneser; S. Giacalone; M. Gillon; E. Gonzales; V. Gorjian; C. Hellier; D. Hidalgo; A. W. Howard; S. Howell; D. Huber; H. Isaacson; E. Jehin; E. L.N. Jensen; A. Kaminski; S. R. Kane; K. Kawauchi; J. F. Kielkopf; H. Klahr; M. R. Kosiarek; L. Kreidberg; M. Kürster; M. Lafarga; J. Livingston; D. Louie; A. Mann; A. Madrigal-Aguado; R. A. Matson; T. Mocnik; J. C. Morales; P. S. Muirhead; F. Murgas; S. Nandakumar; N. Narita; G. Nowak; M. Oshagh; H. Parviainen; V. M. Passegger; D. Pollacco; F. J. Pozuelos; A. Quirrenbach; M. Reefe; I. Ribas; P. Robertson; C. Rodríguez-López; M. E. Rose; A. Roy; A. Schweitzer; J. Schlieder; S. Shectman; A. Tanner; H. V. Senavcl; J. Teske; J. D. Twicken; J. Villasenor; S. X. Wang; L. M. Weiss; J. Wittrock; M. Yllmaz; F. Zohrabi

doi:10.1051/0004-6361/202038016

The CARMENES search for exoplanets around M dwarfs: LP 714-47 b (TOI 442.01): Populating the Neptune desert

S. Dreizler, I. J.M. Crossfield, D. Kossakowski, P. Plavchan, S. V. Jeffers, J. Kemmer, R. Luque, N. Espinoza, E. Pallé, K. Stassun, E. Matthews, B. Cale, J. A. Caballero, M. Schlecker, J. Lillo-Box, M. Zechmeister, S. Lalitha, A. Reiners, A. Soubkiou, B. BitschM. R. Zapatero Osorio, P. Chaturvedi, A. P. Hatzes, G. Ricker, R. Vanderspek, D. W. Latham, S. Seager, J. Winn, J. M. Jenkins, J. Aceituno, P. J. Amado, K. Barkaoui, M. Barbieri, N. M. Batalha, F. F. Bauer, B. Benneke, Z. Benkhaldoun, C. Beichman, J. Berberian, J. Burt, R. P. Butler, D. A. Caldwell, A. Chintada, A. Chontos, J. L. Christiansen, D. R. Ciardi, C. Cifuentes, K. A. Collins, K. I. Collins, D. Combs, M. Cortés-Contreras, J. D. Crane, T. Daylan, D. Dragomir, E. Esparza-Borges, P. Evans, F. Feng, E. E. Flowers, A. Fukui, B. Fulton, E. Furlan, E. Gaidos, C. Geneser, S. Giacalone, M. Gillon, E. Gonzales, V. Gorjian, C. Hellier, D. Hidalgo, A. W. Howard, S. Howell, D. Huber, H. Isaacson, E. Jehin, E. L.N. Jensen, A. Kaminski, S. R. Kane, K. Kawauchi, J. F. Kielkopf, H. Klahr, M. R. Kosiarek, L. Kreidberg, M. Kürster, M. Lafarga, J. Livingston, D. Louie, A. Mann, A. Madrigal-Aguado, R. A. Matson, T. Mocnik, J. C. Morales, P. S. Muirhead, F. Murgas, S. Nandakumar, N. Narita, G. Nowak, M. Oshagh, H. Parviainen, V. M. Passegger, D. Pollacco, F. J. Pozuelos, A. Quirrenbach, M. Reefe, I. Ribas, P. Robertson, C. Rodríguez-López, M. E. Rose, A. Roy, A. Schweitzer, J. Schlieder, S. Shectman, A. Tanner, H. V. Senavcl, J. Teske, J. D. Twicken, J. Villasenor, S. X. Wang, L. M. Weiss, J. Wittrock, M. Yllmaz, F. Zohrabi

Astrophysical Sciences

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30 Scopus citations

Abstract

We report the discovery of a Neptune-like planet (LP 714-47 b, P = 4.05204 d, mb = 30.8 ± 1.5Mpdbl, Rb = 4.7 ± 0.3 Rpdbl) located in the "hot Neptune desert". Confirmation of the TESS Object of Interest (TOI 442.01) was achieved with radial-velocity follow-up using CARMENES, ESPRESSO, HIRES, iSHELL, and PFS, as well as from photometric data using TESS, Spitzer, and ground-based photometry from MuSCAT2, TRAPPIST-South, MONET-South, the George Mason University telescope, the Las Cumbres Observatory Global Telescope network, the El Sauce telescope, the TÜBITAK National Observatory, the University of Louisville Manner Telescope, and WASP-South. We also present high-spatial resolution adaptive optics imaging with the Gemini Near-Infrared Imager. The low uncertainties in the mass and radius determination place LP 714-47 b among physically well-characterised planets, allowing for a meaningful comparison with planet structure models. The host star LP 714-47 is a slowly rotating early M dwarf (Teff = 3950 ± 51 K) with a mass of 0.59 ± 0.02Mpdbl and a radius of 0.58 ± 0.02Rpdbl. From long-term photometric monitoring and spectroscopic activity indicators, we determine a stellar rotation period of about 33 d. The stellar activity is also manifested as correlated noise in the radial-velocity data. In the power spectrum of the radial-velocity data, we detect a second signal with a period of 16 days in addition to the four-day signal of the planet. This could be shown to be a harmonic of the stellar rotation period or the signal of a second planet. It may be possible to tell the difference once more TESS data and radial-velocity data are obtained.

Original language	English (US)
Article number	A127
Journal	Astronomy and Astrophysics
Volume	644
DOIs	https://doi.org/10.1051/0004-6361/202038016
State	Published - Dec 1 2020

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Methods: data analysis
Planetary systems
Planets and satellites: individual: LP 714-47 b
Stars: individual: LP 714-47
Stars: late-type

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10.1051/0004-6361/202038016

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Dreizler, S., Crossfield, I. J. M., Kossakowski, D., Plavchan, P., Jeffers, S. V., Kemmer, J., Luque, R., Espinoza, N., Pallé, E., Stassun, K., Matthews, E., Cale, B., Caballero, J. A., Schlecker, M., Lillo-Box, J., Zechmeister, M., Lalitha, S., Reiners, A., Soubkiou, A., ... Zohrabi, F. (2020). The CARMENES search for exoplanets around M dwarfs: LP 714-47 b (TOI 442.01): Populating the Neptune desert. Astronomy and Astrophysics, 644, Article A127. https://doi.org/10.1051/0004-6361/202038016

@article{b31f789b6fca410ea3996b33cde3a813,

title = "The CARMENES search for exoplanets around M dwarfs: LP 714-47 b (TOI 442.01): Populating the Neptune desert",

abstract = "We report the discovery of a Neptune-like planet (LP 714-47 b, P = 4.05204 d, mb = 30.8 ± 1.5Mpdbl, Rb = 4.7 ± 0.3 Rpdbl) located in the {"}hot Neptune desert{"}. Confirmation of the TESS Object of Interest (TOI 442.01) was achieved with radial-velocity follow-up using CARMENES, ESPRESSO, HIRES, iSHELL, and PFS, as well as from photometric data using TESS, Spitzer, and ground-based photometry from MuSCAT2, TRAPPIST-South, MONET-South, the George Mason University telescope, the Las Cumbres Observatory Global Telescope network, the El Sauce telescope, the T{\"U}BITAK National Observatory, the University of Louisville Manner Telescope, and WASP-South. We also present high-spatial resolution adaptive optics imaging with the Gemini Near-Infrared Imager. The low uncertainties in the mass and radius determination place LP 714-47 b among physically well-characterised planets, allowing for a meaningful comparison with planet structure models. The host star LP 714-47 is a slowly rotating early M dwarf (Teff = 3950 ± 51 K) with a mass of 0.59 ± 0.02Mpdbl and a radius of 0.58 ± 0.02Rpdbl. From long-term photometric monitoring and spectroscopic activity indicators, we determine a stellar rotation period of about 33 d. The stellar activity is also manifested as correlated noise in the radial-velocity data. In the power spectrum of the radial-velocity data, we detect a second signal with a period of 16 days in addition to the four-day signal of the planet. This could be shown to be a harmonic of the stellar rotation period or the signal of a second planet. It may be possible to tell the difference once more TESS data and radial-velocity data are obtained.",

keywords = "Methods: data analysis, Planetary systems, Planets and satellites: individual: LP 714-47 b, Stars: individual: LP 714-47, Stars: late-type",

author = "S. Dreizler and Crossfield, {I. J.M.} and D. Kossakowski and P. Plavchan and Jeffers, {S. V.} and J. Kemmer and R. Luque and N. Espinoza and E. Pall{\'e} and K. Stassun and E. Matthews and B. Cale and Caballero, {J. A.} and M. Schlecker and J. Lillo-Box and M. Zechmeister and S. Lalitha and A. Reiners and A. Soubkiou and B. Bitsch and {Zapatero Osorio}, {M. R.} and P. Chaturvedi and Hatzes, {A. P.} and G. Ricker and R. Vanderspek and Latham, {D. W.} and S. Seager and J. Winn and Jenkins, {J. M.} and J. Aceituno and Amado, {P. J.} and K. Barkaoui and M. Barbieri and Batalha, {N. M.} and Bauer, {F. F.} and B. Benneke and Z. Benkhaldoun and C. Beichman and J. Berberian and J. Burt and Butler, {R. P.} and Caldwell, {D. A.} and A. Chintada and A. Chontos and Christiansen, {J. L.} and Ciardi, {D. R.} and C. Cifuentes and Collins, {K. A.} and Collins, {K. I.} and D. Combs and M. Cort{\'e}s-Contreras and Crane, {J. D.} and T. Daylan and D. Dragomir and E. Esparza-Borges and P. Evans and F. Feng and Flowers, {E. E.} and A. Fukui and B. Fulton and E. Furlan and E. Gaidos and C. Geneser and S. Giacalone and M. Gillon and E. Gonzales and V. Gorjian and C. Hellier and D. Hidalgo and Howard, {A. W.} and S. Howell and D. Huber and H. Isaacson and E. Jehin and Jensen, {E. L.N.} and A. Kaminski and Kane, {S. R.} and K. Kawauchi and Kielkopf, {J. F.} and H. Klahr and Kosiarek, {M. R.} and L. Kreidberg and M. K{\"u}rster and M. Lafarga and J. Livingston and D. Louie and A. Mann and A. Madrigal-Aguado and Matson, {R. A.} and T. Mocnik and Morales, {J. C.} and Muirhead, {P. S.} and F. Murgas and S. Nandakumar and N. Narita and G. Nowak and M. Oshagh and H. Parviainen and Passegger, {V. M.} and D. Pollacco and Pozuelos, {F. J.} and A. Quirrenbach and M. Reefe and I. Ribas and P. Robertson and C. Rodr{\'i}guez-L{\'o}pez and Rose, {M. E.} and A. Roy and A. Schweitzer and J. Schlieder and S. Shectman and A. Tanner and Senavcl, {H. V.} and J. Teske and Twicken, {J. D.} and J. Villasenor and Wang, {S. X.} and Weiss, {L. M.} and J. Wittrock and M. Yllmaz and F. Zohrabi",

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

year = "2020",

month = dec,

day = "1",

doi = "10.1051/0004-6361/202038016",

language = "English (US)",

volume = "644",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Dreizler, S, Crossfield, IJM, Kossakowski, D, Plavchan, P, Jeffers, SV, Kemmer, J, Luque, R, Espinoza, N, Pallé, E, Stassun, K, Matthews, E, Cale, B, Caballero, JA, Schlecker, M, Lillo-Box, J, Zechmeister, M, Lalitha, S, Reiners, A, Soubkiou, A, Bitsch, B, Zapatero Osorio, MR, Chaturvedi, P, Hatzes, AP, Ricker, G, Vanderspek, R, Latham, DW, Seager, S, Winn, J, Jenkins, JM, Aceituno, J, Amado, PJ, Barkaoui, K, Barbieri, M, Batalha, NM, Bauer, FF, Benneke, B, Benkhaldoun, Z, Beichman, C, Berberian, J, Burt, J, Butler, RP, Caldwell, DA, Chintada, A, Chontos, A, Christiansen, JL, Ciardi, DR, Cifuentes, C, Collins, KA, Collins, KI, Combs, D, Cortés-Contreras, M, Crane, JD, Daylan, T, Dragomir, D, Esparza-Borges, E, Evans, P, Feng, F, Flowers, EE, Fukui, A, Fulton, B, Furlan, E, Gaidos, E, Geneser, C, Giacalone, S, Gillon, M, Gonzales, E, Gorjian, V, Hellier, C, Hidalgo, D, Howard, AW, Howell, S, Huber, D, Isaacson, H, Jehin, E, Jensen, ELN, Kaminski, A, Kane, SR, Kawauchi, K, Kielkopf, JF, Klahr, H, Kosiarek, MR, Kreidberg, L, Kürster, M, Lafarga, M, Livingston, J, Louie, D, Mann, A, Madrigal-Aguado, A, Matson, RA, Mocnik, T, Morales, JC, Muirhead, PS, Murgas, F, Nandakumar, S, Narita, N, Nowak, G, Oshagh, M, Parviainen, H, Passegger, VM, Pollacco, D, Pozuelos, FJ, Quirrenbach, A, Reefe, M, Ribas, I, Robertson, P, Rodríguez-López, C, Rose, ME, Roy, A, Schweitzer, A, Schlieder, J, Shectman, S, Tanner, A, Senavcl, HV, Teske, J, Twicken, JD, Villasenor, J, Wang, SX, Weiss, LM, Wittrock, J, Yllmaz, M & Zohrabi, F 2020, 'The CARMENES search for exoplanets around M dwarfs: LP 714-47 b (TOI 442.01): Populating the Neptune desert', Astronomy and Astrophysics, vol. 644, A127. https://doi.org/10.1051/0004-6361/202038016

TY - JOUR

T1 - The CARMENES search for exoplanets around M dwarfs

T2 - LP 714-47 b (TOI 442.01): Populating the Neptune desert

AU - Dreizler, S.

AU - Crossfield, I. J.M.

AU - Kossakowski, D.

AU - Plavchan, P.

AU - Jeffers, S. V.

AU - Kemmer, J.

AU - Luque, R.

AU - Espinoza, N.

AU - Pallé, E.

AU - Stassun, K.

AU - Matthews, E.

AU - Cale, B.

AU - Caballero, J. A.

AU - Schlecker, M.

AU - Lillo-Box, J.

AU - Zechmeister, M.

AU - Lalitha, S.

AU - Reiners, A.

AU - Soubkiou, A.

AU - Bitsch, B.

AU - Zapatero Osorio, M. R.

AU - Chaturvedi, P.

AU - Hatzes, A. P.

AU - Ricker, G.

AU - Vanderspek, R.

AU - Latham, D. W.

AU - Seager, S.

AU - Winn, J.

AU - Jenkins, J. M.

AU - Aceituno, J.

AU - Amado, P. J.

AU - Barkaoui, K.

AU - Barbieri, M.

AU - Batalha, N. M.

AU - Bauer, F. F.

AU - Benneke, B.

AU - Benkhaldoun, Z.

AU - Beichman, C.

AU - Berberian, J.

AU - Burt, J.

AU - Butler, R. P.

AU - Caldwell, D. A.

AU - Chintada, A.

AU - Chontos, A.

AU - Christiansen, J. L.

AU - Ciardi, D. R.

AU - Cifuentes, C.

AU - Collins, K. A.

AU - Collins, K. I.

AU - Combs, D.

AU - Cortés-Contreras, M.

AU - Crane, J. D.

AU - Daylan, T.

AU - Dragomir, D.

AU - Esparza-Borges, E.

AU - Evans, P.

AU - Feng, F.

AU - Flowers, E. E.

AU - Fukui, A.

AU - Fulton, B.

AU - Furlan, E.

AU - Gaidos, E.

AU - Geneser, C.

AU - Giacalone, S.

AU - Gillon, M.

AU - Gonzales, E.

AU - Gorjian, V.

AU - Hellier, C.

AU - Hidalgo, D.

AU - Howard, A. W.

AU - Howell, S.

AU - Huber, D.

AU - Isaacson, H.

AU - Jehin, E.

AU - Jensen, E. L.N.

AU - Kaminski, A.

AU - Kane, S. R.

AU - Kawauchi, K.

AU - Kielkopf, J. F.

AU - Klahr, H.

AU - Kosiarek, M. R.

AU - Kreidberg, L.

AU - Kürster, M.

AU - Lafarga, M.

AU - Livingston, J.

AU - Louie, D.

AU - Mann, A.

AU - Madrigal-Aguado, A.

AU - Matson, R. A.

AU - Mocnik, T.

AU - Morales, J. C.

AU - Muirhead, P. S.

AU - Murgas, F.

AU - Nandakumar, S.

AU - Narita, N.

AU - Nowak, G.

AU - Oshagh, M.

AU - Parviainen, H.

AU - Passegger, V. M.

AU - Pollacco, D.

AU - Pozuelos, F. J.

AU - Quirrenbach, A.

AU - Reefe, M.

AU - Ribas, I.

AU - Robertson, P.

AU - Rodríguez-López, C.

AU - Rose, M. E.

AU - Roy, A.

AU - Schweitzer, A.

AU - Schlieder, J.

AU - Shectman, S.

AU - Tanner, A.

AU - Senavcl, H. V.

AU - Teske, J.

AU - Twicken, J. D.

AU - Villasenor, J.

AU - Wang, S. X.

AU - Weiss, L. M.

AU - Wittrock, J.

AU - Yllmaz, M.

AU - Zohrabi, F.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - We report the discovery of a Neptune-like planet (LP 714-47 b, P = 4.05204 d, mb = 30.8 ± 1.5Mpdbl, Rb = 4.7 ± 0.3 Rpdbl) located in the "hot Neptune desert". Confirmation of the TESS Object of Interest (TOI 442.01) was achieved with radial-velocity follow-up using CARMENES, ESPRESSO, HIRES, iSHELL, and PFS, as well as from photometric data using TESS, Spitzer, and ground-based photometry from MuSCAT2, TRAPPIST-South, MONET-South, the George Mason University telescope, the Las Cumbres Observatory Global Telescope network, the El Sauce telescope, the TÜBITAK National Observatory, the University of Louisville Manner Telescope, and WASP-South. We also present high-spatial resolution adaptive optics imaging with the Gemini Near-Infrared Imager. The low uncertainties in the mass and radius determination place LP 714-47 b among physically well-characterised planets, allowing for a meaningful comparison with planet structure models. The host star LP 714-47 is a slowly rotating early M dwarf (Teff = 3950 ± 51 K) with a mass of 0.59 ± 0.02Mpdbl and a radius of 0.58 ± 0.02Rpdbl. From long-term photometric monitoring and spectroscopic activity indicators, we determine a stellar rotation period of about 33 d. The stellar activity is also manifested as correlated noise in the radial-velocity data. In the power spectrum of the radial-velocity data, we detect a second signal with a period of 16 days in addition to the four-day signal of the planet. This could be shown to be a harmonic of the stellar rotation period or the signal of a second planet. It may be possible to tell the difference once more TESS data and radial-velocity data are obtained.

AB - We report the discovery of a Neptune-like planet (LP 714-47 b, P = 4.05204 d, mb = 30.8 ± 1.5Mpdbl, Rb = 4.7 ± 0.3 Rpdbl) located in the "hot Neptune desert". Confirmation of the TESS Object of Interest (TOI 442.01) was achieved with radial-velocity follow-up using CARMENES, ESPRESSO, HIRES, iSHELL, and PFS, as well as from photometric data using TESS, Spitzer, and ground-based photometry from MuSCAT2, TRAPPIST-South, MONET-South, the George Mason University telescope, the Las Cumbres Observatory Global Telescope network, the El Sauce telescope, the TÜBITAK National Observatory, the University of Louisville Manner Telescope, and WASP-South. We also present high-spatial resolution adaptive optics imaging with the Gemini Near-Infrared Imager. The low uncertainties in the mass and radius determination place LP 714-47 b among physically well-characterised planets, allowing for a meaningful comparison with planet structure models. The host star LP 714-47 is a slowly rotating early M dwarf (Teff = 3950 ± 51 K) with a mass of 0.59 ± 0.02Mpdbl and a radius of 0.58 ± 0.02Rpdbl. From long-term photometric monitoring and spectroscopic activity indicators, we determine a stellar rotation period of about 33 d. The stellar activity is also manifested as correlated noise in the radial-velocity data. In the power spectrum of the radial-velocity data, we detect a second signal with a period of 16 days in addition to the four-day signal of the planet. This could be shown to be a harmonic of the stellar rotation period or the signal of a second planet. It may be possible to tell the difference once more TESS data and radial-velocity data are obtained.

KW - Methods: data analysis

KW - Planetary systems

KW - Planets and satellites: individual: LP 714-47 b

KW - Stars: individual: LP 714-47

KW - Stars: late-type

UR - http://www.scopus.com/inward/record.url?scp=85097891627&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85097891627&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/202038016

DO - 10.1051/0004-6361/202038016

M3 - Article

AN - SCOPUS:85097891627

SN - 0004-6361

VL - 644

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A127

ER -

The CARMENES search for exoplanets around M dwarfs: LP 714-47 b (TOI 442.01): Populating the Neptune desert

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