The CARMENES search for exoplanets around M dwarfs

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

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Pedro J. Amado
Reiners et al., 2018

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EDP Sciences, Astronomy & Astrophysics, (609), p. L5, 2018

DOI: 10.1051/0004-6361/201732165

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@article{Reiners2018,
 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 &lt; 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.},
 author = {Reiners, A. and Ribas, I. and Zechmeister, M. and Caballero, J. A. and Trifonov, T. and Dreizler, S. and Morales, J. C. and Tal-Or, L. and Lafarga, M. and Quirrenbach, A. and Amado, P. J. and Kaminski, A. and Jeffers, S. V. and Aceituno, J. and Béjar, V. J. S. and Guàrdia, J. and Guenther, E. W. and Hagen, H.-J. and Montes, D. and Passegger, V. M. and Seifert, W. and Schweitzer, A. and Cortés-Contreras, M. and Abril, M. and Alonso-Floriano, F. J. and Ammler-Von Eiff, M. and Antona, R. and Anglada-Escudé, G. and Anwand-Heerwart, H. and Arroyo-Torres, B. and Azzaro, M. and Baroch, D. and Barrado, D. and Bauer, F. F. and Becerril, S. and Benítez, D. and Berdiñas, Z. M. and Bergond, G. and Blümcke, M. and Brinkmöller, M. and del Burgo, C. and Cano, J. and Cárdenas Vázquez, M. C. and Casal, E. and Cifuentes, C. and Claret, A. and Colomé, J. and Czesla, S. and Díez-Alonso, E. and Feiz, C. and Fernández, M. and Ferro, I. M. and Fuhrmeister, B. and Galadí-Enríquez, D. and Garcia-Piquer, A. and García Vargas, M. L. and Gesa, L. and Gómez Galera, V. and González Hernández, J. I. and González-Peinado, R. and Grözinger, U. and Grohnert, S. and Guijarro, A. and de Guindos, E. and Gutiérrez-Soto, J. and Hatzes, A. P. and Hauschildt, P. H. and Hedrosa, R. P. and Helmling, J. and Henning, T.-H. and Hermelo, I. and Hernández Arabí, R. and Hernández Castaño, L. and Hernández Hernando, F. and Herrero, E. and Huber, A. and Huke, P. and Johnson, E. N. and de Juan, E. and Kim, M. and Klein, R. and Klüter, J. and Klutsch, A. and Kürster, M. and Labarga, F. and Lamert, A. and Lampón, M. and Lara, L. M. and Laun, W. and Lemke, U. and Lenzen, R. and Launhardt, R. and López del Fresno, M. and López-González, M. J. and López-Puertas, M. and López Salas, J. F. and López-Santiago, J. and Luque, R. and Magán Madinabeitia, H. and Mall, U. and Mancini, L. and Mandel, H. and Marfil, E. and Marín Molina, J. A. and Maroto Fernández, D. and Martín, E. L. and Martín-Ruiz, S. and Marvin, C. J. and Mathar, R. J. and Mirabet, E. and Moreno-Raya, M. E. and Moya, A. and Mundt, R. and Nagel, E. and Naranjo, V. and Nortmann, L. and Nowak, G. and Ofir, A. and Oreiro, R. and Pallé, E. and Panduro, J. and Pascual, J. and Pavlov, A. and Pedraz, S. and Pérez-Calpena, A. and Pérez Medialdea, D. and Perger, M. and Perryman, M. A. C. and Pluto, M. and Rabaza, O. and Ramón, A. and Rebolo, R. and Redondo, P. and Reffert, S. and Reinhart, S. and Rhode, P. and Rix, H.-W. and Rodler, F. and Rodríguez, E. and Rodríguez-López, C. and Rodríguez Trinidad, A. and Rohloff, R.-R. and Rosich, A. and Sadegi, S. and Sánchez-Blanco, E. and Sánchez Carrasco, M. A. and Sánchez-López, A. and Sanz-Forcada, J. and Sarkis, P. and Sarmiento, L. F. and Schäfer, S. and Schmitt, J. H. M. M. and Schiller, J. and Schöfer, P. and Solano, E. and Stahl, O. and Strachan, J. B. P. and Stürmer, J. and Suárez, J. C. and Tabernero, H. M. and Tala, M. and Tulloch, S. M. and Ulbrich, R.-G. and Veredas, G. and Vico Linares, J. I. and Vilardell, F. and Wagner, K. and Winkler, J. and Wolthoff, V. and Xu, W. and Yan, F. and Zapatero Osorio, M. R.},
 doi = {10.1051/0004-6361/201732165},
 journal = {Astronomy & Astrophysics},
 month = {jan},
 pages = {L5},
 title = {The CARMENES search for exoplanets around M dwarfs},
 url = {https://doi.org/10.1051/0004-6361/201732165},
 volume = {609},
 year = {2018}
}

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The CARMENES search for exoplanets around M dwarfs

Journal article published in 2018 by 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 and other authors. 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, T.-H. 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

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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.

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The CARMENES search for exoplanets around M dwarfs

Abstract