The CARMENES search for exoplanets around M dwarfs: HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf

A. Reiners; I. Ribas; M. Zechmeister; J. A. Caballero; T. Trifonov; S. Dreizler; J. C. Morales; L. Tal-Or; M. Lafarga; A. Quirrenbach; P. J. Amado; A. Kaminski; S. V. Jeffers; J. Aceituno; V. J.S. Béjar; J. Guàrdia; E. W. Guenther; H. J. Hagen; D. Montes; V. M. Passegger; W. Seifert; A. Schweitzer; M. Cortés-Contreras; M. Abril; F. J. Alonso-Floriano; M. Ammler Von Eiff; R. Antona; G. Anglada-Escudé; H. Anwand-Heerwart; B. Arroyo-Torres; M. Azzaro; D. Baroch; D. Barrado; F. F. Bauer; S. Becerril; D. Benítez; Z. M. Berdiñas; G. Bergond; M. Blümcke; M. Brinkmöller; C. Del Burgo; J. Cano; M. C. Cárdenas Vázquez; E. Casal; C. Cifuentes; A. Claret; J. Colomé; S. Czesla; E. Díez-Alonso; C. Feiz; M. Fernández; I. M. Ferro; B. Fuhrmeister; D. Galadí-Enríquez; A. Garcia-Piquer; M. L. García Vargas; L. Gesa; V. Gómez Galera; J. I. González Hernández; R. González-Peinado; U. Grözinger; S. Grohnert; A. Guijarro; E. De Guindos; J. Gutiérrez-Soto; A. P. Hatzes; P. H. Hauschildt; R. P. Hedrosa; J. Helmling; Th Henning; I. Hermelo; R. Hernández Arabí; L. Hernández Castaño; F. Hernández Hernando; E. Herrero; A. Huber; P. Huke; E. N. Johnson; E. De Juan; M. Kim; R. Klein; J. Klüter; A. Klutsch; M. Kürster; F. Labarga; A. Lamert; M. Lampón; L. M. Lara; W. Laun; U. Lemke; R. Lenzen; R. Launhardt; M. López Del Fresno; M. J. López-González; M. López-Puertas; J. F. López Salas; J. López-Santiago; R. Luque; H. Magán Madinabeitia; U. Mall; L. Mancini; H. Mandel; E. Marfil; J. A. Marín Molina; D. Maroto Fernández; E. L. Martín; S. Martín-Ruiz; C. J. Marvin; R. J. Mathar; E. Mirabet; M. E. Moreno-Raya; A. Moya; R. Mundt; E. Nagel; V. Naranjo; L. Nortmann; G. Nowak; A. Ofir; R. Oreiro; E. Pallé; J. Panduro; J. Pascual; A. Pavlov; S. Pedraz; A. Pérez-Calpena; D. Pérez Medialdea; M. Perger; M. A.C. Perryman; M. Pluto; O. Rabaza; A. Ramón; R. Rebolo; P. Redondo; S. Reffert; S. Reinhart; P. Rhode; H. W. Rix; F. Rodler; E. Rodríguez; C. Rodríguez-López; A. Rodríguez Trinidad; R. R. Rohloff; A. Rosich; S. Sadegi; E. Sánchez-Blanco; M. A. Sánchez Carrasco; A. Sánchez-López; J. Sanz-Forcada; P. Sarkis; L. F. Sarmiento; S. Schäfer; J. H.M.M. Schmitt; J. Schiller; P. Schöfer; E. Solano; O. Stahl; J. B.P. Strachan; J. Stürmer; J. C. Suárez; H. M. Tabernero; M. Tala; S. M. Tulloch; R. G. Ulbrich; G. Veredas; J. I. Vico Linares; F. Vilardell; K. Wagner; J. Winkler; V. Wolthoff; W. Xu; F. Yan; M. R. Zapatero Osorio

doi:10.1051/0004-6361/201732165

The CARMENES search for exoplanets around M dwarfs: HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf

A. Reiners, I. Ribas, M. Zechmeister, J. A. Caballero, T. Trifonov, S. Dreizler, J. C. Morales, L. Tal-Or, M. Lafarga, A. Quirrenbach, P. J. Amado, A. Kaminski, S. V. Jeffers, J. Aceituno, V. J.S. Béjar, J. Guàrdia, E. W. Guenther, H. J. Hagen, D. Montes, V. M. PasseggerW. Seifert, A. Schweitzer, M. Cortés-Contreras, M. Abril, F. J. Alonso-Floriano, M. Ammler Von Eiff, R. Antona, G. Anglada-Escudé, H. Anwand-Heerwart, B. Arroyo-Torres, M. Azzaro, D. Baroch, D. Barrado, F. F. Bauer, S. Becerril, D. Benítez, Z. M. Berdiñas, G. Bergond, M. Blümcke, M. Brinkmöller, C. Del Burgo, J. Cano, M. C. Cárdenas Vázquez, E. Casal, C. Cifuentes, A. Claret, J. Colomé, S. Czesla, E. Díez-Alonso, C. Feiz, M. Fernández, I. M. Ferro, B. Fuhrmeister, D. Galadí-Enríquez, A. Garcia-Piquer, M. L. García Vargas, L. Gesa, V. Gómez Galera, J. I. González Hernández, R. González-Peinado, U. Grözinger, S. Grohnert, A. Guijarro, E. De Guindos, J. Gutiérrez-Soto, A. P. Hatzes, P. H. Hauschildt, R. P. Hedrosa, J. Helmling, Th Henning, I. Hermelo, R. Hernández Arabí, L. Hernández Castaño, F. Hernández Hernando, E. Herrero, A. Huber, P. Huke, E. N. Johnson, E. De Juan, M. Kim, R. Klein, J. Klüter, A. Klutsch, M. Kürster, F. Labarga, A. Lamert, M. Lampón, L. M. Lara, W. Laun, U. Lemke, R. Lenzen, R. Launhardt, M. López Del Fresno, M. J. López-González, M. López-Puertas, J. F. López Salas, J. López-Santiago, R. Luque, H. Magán Madinabeitia, U. Mall, L. Mancini, H. Mandel, E. Marfil, J. A. Marín Molina, D. Maroto Fernández, E. L. Martín, S. Martín-Ruiz, C. J. Marvin, R. J. Mathar, E. Mirabet, M. E. Moreno-Raya, A. Moya, R. Mundt, E. Nagel, V. Naranjo, L. Nortmann, G. Nowak, A. Ofir, R. Oreiro, E. Pallé, J. Panduro, J. Pascual, A. Pavlov, S. Pedraz, A. Pérez-Calpena, D. Pérez Medialdea, M. Perger, M. A.C. Perryman, M. Pluto, O. Rabaza, A. Ramón, R. Rebolo, P. Redondo, S. Reffert, S. Reinhart, P. Rhode, H. W. Rix, F. Rodler, E. Rodríguez, C. Rodríguez-López, A. Rodríguez Trinidad, R. R. Rohloff, A. Rosich, S. Sadegi, E. Sánchez-Blanco, M. A. Sánchez Carrasco, A. Sánchez-López, J. Sanz-Forcada, P. Sarkis, L. F. Sarmiento, S. Schäfer, J. H.M.M. Schmitt, J. Schiller, P. Schöfer, E. Solano, O. Stahl, J. B.P. Strachan, J. Stürmer, J. C. Suárez, H. M. Tabernero, M. Tala, S. M. Tulloch, R. G. Ulbrich, G. Veredas, J. I. Vico Linares, F. Vilardell, K. Wagner, J. Winkler, V. Wolthoff, W. Xu, F. Yan, M. R. Zapatero Osorio

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

50 Scopus citations

Abstract

We report on the first star discovered to host a planet detected by radial velocity (RV) observations obtained within the CARMENES survey for exoplanets around M dwarfs. HD 147379 (V = 8.9 mag, M = 0.58 ± 0.08 M), a bright M0.0 V star at a distance of 10.7 pc, is found to undergo periodic RV variations with a semi-amplitude of K = 5.1 ± 0.4 m s^-1 and a period of P = 86.54 ± 0.06 d. The RV signal is found in our CARMENES data, which were taken between 2016 and 2017, and is supported by HIRES/Keck observations that were obtained since 2000. The RV variations are interpreted as resulting from a planet of minimum mass m_P sin i = 25 ± 2 M, 1.5 times the mass of Neptune, with an orbital semi-major axis a = 0.32 au and low eccentricity (e < 0.13). HD 147379 b is orbiting inside the temperate zone around the star, where water could exist in liquid form. The RV time-series and various spectroscopic indicators show additional hints of variations at an approximate period of 21.1 d (and its first harmonic), which we attribute to the rotation period of the star.

Original language	English
Article number	L5
Journal	Astronomy and Astrophysics
Volume	609
DOIs	https://doi.org/10.1051/0004-6361/201732165
State	Published - 1 Jan 2018
Externally published	Yes

Keywords

Planets and satellites: individual: HD 147379 b
Stars: activity
Stars: individual: HD 147379
Stars: late-type
Stars: low-mass
Stars: rotation

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10.1051/0004-6361/201732165

Cite this

Reiners, A., Ribas, I., Zechmeister, M., Caballero, J. A., Trifonov, T., Dreizler, S., Morales, J. C., Tal-Or, L., Lafarga, M., Quirrenbach, A., Amado, P. J., Kaminski, A., Jeffers, S. V., Aceituno, J., Béjar, V. J. S., Guàrdia, J., Guenther, E. W., Hagen, H. J., Montes, D., ... Zapatero Osorio, M. R. (2018). The CARMENES search for exoplanets around M dwarfs: HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf. Astronomy and Astrophysics, 609, Article L5. https://doi.org/10.1051/0004-6361/201732165

@article{28f98e8afbd4405eb045212274c9dbd9,

title = "The CARMENES search for exoplanets around M dwarfs: HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf",

abstract = "We report on the first star discovered to host a planet detected by radial velocity (RV) observations obtained within the CARMENES survey for exoplanets around M dwarfs. HD 147379 (V = 8.9 mag, M = 0.58 ± 0.08 M), a bright M0.0 V star at a distance of 10.7 pc, is found to undergo periodic RV variations with a semi-amplitude of K = 5.1 ± 0.4 m s-1 and a period of P = 86.54 ± 0.06 d. The RV signal is found in our CARMENES data, which were taken between 2016 and 2017, and is supported by HIRES/Keck observations that were obtained since 2000. The RV variations are interpreted as resulting from a planet of minimum mass mP sin i = 25 ± 2 M, 1.5 times the mass of Neptune, with an orbital semi-major axis a = 0.32 au and low eccentricity (e < 0.13). HD 147379 b is orbiting inside the temperate zone around the star, where water could exist in liquid form. The RV time-series and various spectroscopic indicators show additional hints of variations at an approximate period of 21.1 d (and its first harmonic), which we attribute to the rotation period of the star.",

keywords = "Planets and satellites: individual: HD 147379 b, Stars: activity, Stars: individual: HD 147379, Stars: late-type, Stars: low-mass, Stars: rotation",

author = "A. Reiners and I. Ribas and M. Zechmeister and Caballero, {J. A.} and T. Trifonov and S. Dreizler and Morales, {J. C.} and L. Tal-Or and M. Lafarga and A. Quirrenbach and Amado, {P. J.} and A. Kaminski and Jeffers, {S. V.} and J. Aceituno and B{\'e}jar, {V. J.S.} and J. Gu{\`a}rdia and Guenther, {E. W.} and Hagen, {H. J.} and D. Montes and Passegger, {V. M.} and W. Seifert and A. Schweitzer and M. Cort{\'e}s-Contreras and M. Abril and Alonso-Floriano, {F. J.} and Eiff, {M. Ammler Von} and R. Antona and G. Anglada-Escud{\'e} and H. Anwand-Heerwart and B. Arroyo-Torres and M. Azzaro and D. Baroch and D. Barrado and Bauer, {F. F.} and S. Becerril and D. Ben{\'i}tez and Berdi{\~n}as, {Z. M.} and G. Bergond and M. Bl{\"u}mcke and M. Brinkm{\"o}ller and {Del Burgo}, C. and J. Cano and {C{\'a}rdenas V{\'a}zquez}, {M. C.} and E. Casal and C. Cifuentes and A. Claret and J. Colom{\'e} and S. Czesla and E. D{\'i}ez-Alonso and C. Feiz and M. Fern{\'a}ndez and Ferro, {I. M.} and B. Fuhrmeister and D. Galad{\'i}-Enr{\'i}quez and A. Garcia-Piquer and {Garc{\'i}a Vargas}, {M. L.} and L. Gesa and {G{\'o}mez Galera}, V. and {Gonz{\'a}lez Hern{\'a}ndez}, {J. I.} and R. Gonz{\'a}lez-Peinado and U. Gr{\"o}zinger and S. Grohnert and A. Guijarro and {De Guindos}, E. and J. Guti{\'e}rrez-Soto and Hatzes, {A. P.} and Hauschildt, {P. H.} and Hedrosa, {R. P.} and J. Helmling and Th Henning and I. Hermelo and {Hern{\'a}ndez Arab{\'i}}, R. and {Hern{\'a}ndez Casta{\~n}o}, L. and {Hern{\'a}ndez Hernando}, F. and E. Herrero and A. Huber and P. Huke and Johnson, {E. N.} and {De Juan}, E. and M. Kim and R. Klein and J. Kl{\"u}ter and A. Klutsch and M. K{\"u}rster and F. Labarga and A. Lamert and M. Lamp{\'o}n and Lara, {L. M.} and W. Laun and U. Lemke and R. Lenzen and R. Launhardt and {L{\'o}pez Del Fresno}, M. and L{\'o}pez-Gonz{\'a}lez, {M. J.} and M. L{\'o}pez-Puertas and {L{\'o}pez Salas}, {J. F.} and J. L{\'o}pez-Santiago and R. Luque and {Mag{\'a}n Madinabeitia}, H. and U. Mall and L. Mancini and H. Mandel and E. Marfil and {Mar{\'i}n Molina}, {J. A.} and {Maroto Fern{\'a}ndez}, D. and Mart{\'i}n, {E. L.} and S. Mart{\'i}n-Ruiz and Marvin, {C. J.} and Mathar, {R. J.} and E. Mirabet and Moreno-Raya, {M. E.} and A. Moya and R. Mundt and E. Nagel and V. Naranjo and L. Nortmann and G. Nowak and A. Ofir and R. Oreiro and E. Pall{\'e} and J. Panduro and J. Pascual and A. Pavlov and S. Pedraz and A. P{\'e}rez-Calpena and {P{\'e}rez Medialdea}, D. and M. Perger and Perryman, {M. A.C.} and M. Pluto and O. Rabaza and A. Ram{\'o}n and R. Rebolo and P. Redondo and S. Reffert and S. Reinhart and P. Rhode and Rix, {H. W.} and F. Rodler and E. Rodr{\'i}guez and C. Rodr{\'i}guez-L{\'o}pez and {Rodr{\'i}guez Trinidad}, A. and Rohloff, {R. R.} and A. Rosich and S. Sadegi and E. S{\'a}nchez-Blanco and {S{\'a}nchez Carrasco}, {M. A.} and A. S{\'a}nchez-L{\'o}pez and J. Sanz-Forcada and P. Sarkis and Sarmiento, {L. F.} and S. Sch{\"a}fer and Schmitt, {J. H.M.M.} and J. Schiller and P. Sch{\"o}fer and E. Solano and O. Stahl and Strachan, {J. B.P.} and J. St{\"u}rmer and Su{\'a}rez, {J. C.} and Tabernero, {H. M.} and M. Tala and Tulloch, {S. M.} and Ulbrich, {R. G.} and G. Veredas and {Vico Linares}, {J. I.} and F. Vilardell and K. Wagner and J. Winkler and V. Wolthoff and W. Xu and F. Yan and {Zapatero Osorio}, {M. R.}",

note = "Publisher Copyright: {\textcopyright} ESO, 2018.",

year = "2018",

month = jan,

day = "1",

doi = "10.1051/0004-6361/201732165",

language = "אנגלית",

volume = "609",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Reiners, A, Ribas, I, Zechmeister, M, Caballero, JA, Trifonov, T, Dreizler, S, Morales, JC, Tal-Or, L, Lafarga, M, Quirrenbach, A, Amado, PJ, Kaminski, A, Jeffers, SV, Aceituno, J, Béjar, VJS, Guàrdia, J, Guenther, EW, Hagen, HJ, Montes, D, Passegger, VM, Seifert, W, Schweitzer, A, Cortés-Contreras, M, Abril, M, Alonso-Floriano, FJ, Eiff, MAV, Antona, R, Anglada-Escudé, G, Anwand-Heerwart, H, Arroyo-Torres, B, Azzaro, M, Baroch, D, Barrado, D, Bauer, FF, Becerril, S, Benítez, D, Berdiñas, ZM, Bergond, G, Blümcke, M, Brinkmöller, M, Del Burgo, C, Cano, J, Cárdenas Vázquez, MC, Casal, E, Cifuentes, C, Claret, A, Colomé, J, Czesla, S, Díez-Alonso, E, Feiz, C, Fernández, M, Ferro, IM, Fuhrmeister, B, Galadí-Enríquez, D, Garcia-Piquer, A, García Vargas, ML, Gesa, L, Gómez Galera, V, González Hernández, JI, González-Peinado, R, Grözinger, U, Grohnert, S, Guijarro, A, De Guindos, E, Gutiérrez-Soto, J, Hatzes, AP, Hauschildt, PH, Hedrosa, RP, Helmling, J, Henning, T, Hermelo, I, Hernández Arabí, R, Hernández Castaño, L, Hernández Hernando, F, Herrero, E, Huber, A, Huke, P, Johnson, EN, De Juan, E, Kim, M, Klein, R, Klüter, J, Klutsch, A, Kürster, M, Labarga, F, Lamert, A, Lampón, M, Lara, LM, Laun, W, Lemke, U, Lenzen, R, Launhardt, R, López Del Fresno, M, López-González, MJ, López-Puertas, M, López Salas, JF, López-Santiago, J, Luque, R, Magán Madinabeitia, H, Mall, U, Mancini, L, Mandel, H, Marfil, E, Marín Molina, JA, Maroto Fernández, D, Martín, EL, Martín-Ruiz, S, Marvin, CJ, Mathar, RJ, Mirabet, E, Moreno-Raya, ME, Moya, A, Mundt, R, Nagel, E, Naranjo, V, Nortmann, L, Nowak, G, Ofir, A, Oreiro, R, Pallé, E, Panduro, J, Pascual, J, Pavlov, A, Pedraz, S, Pérez-Calpena, A, Pérez Medialdea, D, Perger, M, Perryman, MAC, Pluto, M, Rabaza, O, Ramón, A, Rebolo, R, Redondo, P, Reffert, S, Reinhart, S, Rhode, P, Rix, HW, Rodler, F, Rodríguez, E, Rodríguez-López, C, Rodríguez Trinidad, A, Rohloff, RR, Rosich, A, Sadegi, S, Sánchez-Blanco, E, Sánchez Carrasco, MA, Sánchez-López, A, Sanz-Forcada, J, Sarkis, P, Sarmiento, LF, Schäfer, S, Schmitt, JHMM, Schiller, J, Schöfer, P, Solano, E, Stahl, O, Strachan, JBP, Stürmer, J, Suárez, JC, Tabernero, HM, Tala, M, Tulloch, SM, Ulbrich, RG, Veredas, G, Vico Linares, JI, Vilardell, F, Wagner, K, Winkler, J, Wolthoff, V, Xu, W, Yan, F & Zapatero Osorio, MR 2018, 'The CARMENES search for exoplanets around M dwarfs: HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf', Astronomy and Astrophysics, vol. 609, L5. https://doi.org/10.1051/0004-6361/201732165

TY - JOUR

T1 - The CARMENES search for exoplanets around M dwarfs

T2 - HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf

AU - Reiners, A.

AU - Ribas, I.

AU - Zechmeister, M.

AU - Caballero, J. A.

AU - Trifonov, T.

AU - Dreizler, S.

AU - Morales, J. C.

AU - Tal-Or, L.

AU - Lafarga, M.

AU - Quirrenbach, A.

AU - Amado, P. J.

AU - Kaminski, A.

AU - Jeffers, S. V.

AU - Aceituno, J.

AU - Béjar, V. J.S.

AU - Guàrdia, J.

AU - Guenther, E. W.

AU - Hagen, H. J.

AU - Montes, D.

AU - Passegger, V. M.

AU - Seifert, W.

AU - Schweitzer, A.

AU - Cortés-Contreras, M.

AU - Abril, M.

AU - Alonso-Floriano, F. J.

AU - Eiff, M. Ammler Von

AU - Antona, R.

AU - Anglada-Escudé, G.

AU - Anwand-Heerwart, H.

AU - Arroyo-Torres, B.

AU - Azzaro, M.

AU - Baroch, D.

AU - Barrado, D.

AU - Bauer, F. F.

AU - Becerril, S.

AU - Benítez, D.

AU - Berdiñas, Z. M.

AU - Bergond, G.

AU - Blümcke, M.

AU - Brinkmöller, M.

AU - Del Burgo, C.

AU - Cano, J.

AU - Cárdenas Vázquez, M. C.

AU - Casal, E.

AU - Cifuentes, C.

AU - Claret, A.

AU - Colomé, J.

AU - Czesla, S.

AU - Díez-Alonso, E.

AU - Feiz, C.

AU - Fernández, M.

AU - Ferro, I. M.

AU - Fuhrmeister, B.

AU - Galadí-Enríquez, D.

AU - Garcia-Piquer, A.

AU - García Vargas, M. L.

AU - Gesa, L.

AU - Gómez Galera, V.

AU - González Hernández, J. I.

AU - González-Peinado, R.

AU - Grözinger, U.

AU - Grohnert, S.

AU - Guijarro, A.

AU - De Guindos, E.

AU - Gutiérrez-Soto, J.

AU - Hatzes, A. P.

AU - Hauschildt, P. H.

AU - Hedrosa, R. P.

AU - Helmling, J.

AU - Henning, Th

AU - Hermelo, I.

AU - Hernández Arabí, R.

AU - Hernández Castaño, L.

AU - Hernández Hernando, F.

AU - Herrero, E.

AU - Huber, A.

AU - Huke, P.

AU - Johnson, E. N.

AU - De Juan, E.

AU - Kim, M.

AU - Klein, R.

AU - Klüter, J.

AU - Klutsch, A.

AU - Kürster, M.

AU - Labarga, F.

AU - Lamert, A.

AU - Lampón, M.

AU - Lara, L. M.

AU - Laun, W.

AU - Lemke, U.

AU - Lenzen, R.

AU - Launhardt, R.

AU - López Del Fresno, M.

AU - López-González, M. J.

AU - López-Puertas, M.

AU - López Salas, J. F.

AU - López-Santiago, J.

AU - Luque, R.

AU - Magán Madinabeitia, H.

AU - Mall, U.

AU - Mancini, L.

AU - Mandel, H.

AU - Marfil, E.

AU - Marín Molina, J. A.

AU - Maroto Fernández, D.

AU - Martín, E. L.

AU - Martín-Ruiz, S.

AU - Marvin, C. J.

AU - Mathar, R. J.

AU - Mirabet, E.

AU - Moreno-Raya, M. E.

AU - Moya, A.

AU - Mundt, R.

AU - Nagel, E.

AU - Naranjo, V.

AU - Nortmann, L.

AU - Nowak, G.

AU - Ofir, A.

AU - Oreiro, R.

AU - Pallé, E.

AU - Panduro, J.

AU - Pascual, J.

AU - Pavlov, A.

AU - Pedraz, S.

AU - Pérez-Calpena, A.

AU - Pérez Medialdea, D.

AU - Perger, M.

AU - Perryman, M. A.C.

AU - Pluto, M.

AU - Rabaza, O.

AU - Ramón, A.

AU - Rebolo, R.

AU - Redondo, P.

AU - Reffert, S.

AU - Reinhart, S.

AU - Rhode, P.

AU - Rix, H. W.

AU - Rodler, F.

AU - Rodríguez, E.

AU - Rodríguez-López, C.

AU - Rodríguez Trinidad, A.

AU - Rohloff, R. R.

AU - Rosich, A.

AU - Sadegi, S.

AU - Sánchez-Blanco, E.

AU - Sánchez Carrasco, M. A.

AU - Sánchez-López, A.

AU - Sanz-Forcada, J.

AU - Sarkis, P.

AU - Sarmiento, L. F.

AU - Schäfer, S.

AU - Schmitt, J. H.M.M.

AU - Schiller, J.

AU - Schöfer, P.

AU - Solano, E.

AU - Stahl, O.

AU - Strachan, J. B.P.

AU - Stürmer, J.

AU - Suárez, J. C.

AU - Tabernero, H. M.

AU - Tala, M.

AU - Tulloch, S. M.

AU - Ulbrich, R. G.

AU - Veredas, G.

AU - Vico Linares, J. I.

AU - Vilardell, F.

AU - Wagner, K.

AU - Winkler, J.

AU - Wolthoff, V.

AU - Xu, W.

AU - Yan, F.

AU - Zapatero Osorio, M. R.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - We report on the first star discovered to host a planet detected by radial velocity (RV) observations obtained within the CARMENES survey for exoplanets around M dwarfs. HD 147379 (V = 8.9 mag, M = 0.58 ± 0.08 M), a bright M0.0 V star at a distance of 10.7 pc, is found to undergo periodic RV variations with a semi-amplitude of K = 5.1 ± 0.4 m s-1 and a period of P = 86.54 ± 0.06 d. The RV signal is found in our CARMENES data, which were taken between 2016 and 2017, and is supported by HIRES/Keck observations that were obtained since 2000. The RV variations are interpreted as resulting from a planet of minimum mass mP sin i = 25 ± 2 M, 1.5 times the mass of Neptune, with an orbital semi-major axis a = 0.32 au and low eccentricity (e < 0.13). HD 147379 b is orbiting inside the temperate zone around the star, where water could exist in liquid form. The RV time-series and various spectroscopic indicators show additional hints of variations at an approximate period of 21.1 d (and its first harmonic), which we attribute to the rotation period of the star.

AB - We report on the first star discovered to host a planet detected by radial velocity (RV) observations obtained within the CARMENES survey for exoplanets around M dwarfs. HD 147379 (V = 8.9 mag, M = 0.58 ± 0.08 M), a bright M0.0 V star at a distance of 10.7 pc, is found to undergo periodic RV variations with a semi-amplitude of K = 5.1 ± 0.4 m s-1 and a period of P = 86.54 ± 0.06 d. The RV signal is found in our CARMENES data, which were taken between 2016 and 2017, and is supported by HIRES/Keck observations that were obtained since 2000. The RV variations are interpreted as resulting from a planet of minimum mass mP sin i = 25 ± 2 M, 1.5 times the mass of Neptune, with an orbital semi-major axis a = 0.32 au and low eccentricity (e < 0.13). HD 147379 b is orbiting inside the temperate zone around the star, where water could exist in liquid form. The RV time-series and various spectroscopic indicators show additional hints of variations at an approximate period of 21.1 d (and its first harmonic), which we attribute to the rotation period of the star.

KW - Planets and satellites: individual: HD 147379 b

KW - Stars: activity

KW - Stars: individual: HD 147379

KW - Stars: late-type

KW - Stars: low-mass

KW - Stars: rotation

UR - http://www.scopus.com/inward/record.url?scp=85041707218&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201732165

DO - 10.1051/0004-6361/201732165

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AN - SCOPUS:85041707218

SN - 0004-6361

VL - 609

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - L5

ER -

The CARMENES search for exoplanets around M dwarfs: HD147379 b: A nearby Neptune in the temperate zone of an early-M dwarf

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