Related papers: The CARMENES search for exoplanets around M dwarfs…

The CARMENES search for exoplanets around M dwarfs: Spectroscopic orbits of nine M-dwarf multiple systems, including two triples, two brown dwarf candidates, and one close M-dwarf-white dwarf binary

M dwarfs are ideal targets for the search of Earth-size planets in the habitable zone using the radial velocity method, attracting the attention of many ongoing surveys. As a by-product of these surveys, new multiple stellar systems are…

Solar and Stellar Astrophysics · Physics 2021-09-08 D. Baroch , J. C. Morales , I. Ribas , V. J. S. Béjar , S. Reffert , C. Cardona Guillén , A. Reiners , J. A. Caballero , A. Quirrenbach , P. J. Amado , G. Anglada-Escudé , J. Colomé , M. Cortés-Contreras , S. Dreizler , D. Galadí-Enríquez , A. P. Hatzes , S. V. Jeffers , Th. Henning , E. Herrero , A. Kaminski , M. Kürster , M. Lafarga , N. Lodieu , M. J. López-González , D. Montes , E. Pallé , M. Perger , D. Pollacco , C. Rodríguez-López , E. Rodríguez , A. Rosich , P. Schöfer , A. Schweitzer , Y. Shan , L. Tal-Or , M. Zechmeister

The CARMENES search for exoplanets around M dwarfs. A homogeneous catalogue of projected rotational velocities accounting for limb-darkening

Stellar rotation is closely linked to both age and magnetic activity. Through gyrochronology, it provides a means to estimate stellar ages and trace the evolution of planetary systems, and it is also crucial to constrain and correct stellar…

Solar and Stellar Astrophysics · Physics 2026-05-27 R. Varas , G. Morello , M. Zechmeister , P. J. Amado , F. J. Pozuelos , J. A. Caballero , A. Claret , C. Cifuentes , R. Morales , A. Quirrenbach , A. Reiners , I. Ribas , V. J. S. Béjar , M. Cortés-Contreras , A. P. Hatzes , Th. Henning , I. Hermelo , H. L. Ruh , A. Schweitzer , H. M. Tabernero , M. R. Zapatero Osorio

CARMENES input catalogue of M dwarfs II. High-resolution imaging with FastCam

Aims: We search for low-mass companions of M dwarfs and characterize their multiplicity fraction with the purpose of helping in the selection of the most appropriate targets for the CARMENES exoplanet survey. Methods: We obtained…

Solar and Stellar Astrophysics · Physics 2016-12-21 M. Cortes-Contreras , V. J. S. Bejar , J. A. Caballero , B. Gauza , D. Montes , F. J. Alonso-Floriano , S. V. Jeffers , J. C. Morales , A. Reiners , I. Ribas , P. Schoefer , A. Quirrenbach , P. J. Amado , R. Mundt , W. Seifert

The CARMENES search for exoplanets around M dwarfs. First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems

Context: The main goal of the CARMENES survey is to find Earth-mass planets around nearby M-dwarf stars. Seven M-dwarfs included in the CARMENES sample had been observed before with HIRES and HARPS and either were reported to have one short…

Earth and Planetary Astrophysics · Physics 2018-02-07 T. Trifonov , M. Kürster , M. Zechmeister , L. Tal-Or , J. A. Caballero , A. Quirrenbach , P. J. Amado , I. Ribas , A. Reiners , S. Reffert , S. Dreizler , A. P. Hatzes , A. Kaminski , R. Launhardt , Th. Henning , D. Montes , V. J. S. Béjar , R. Mundt , A. Pavlov , J. H. M. M. Schmitt , W. Seifert , J. C. Morales , G. Nowak , S. V. Jeffers , C. Rodríguez-López , C. del Burgo , G. Anglada-Escudé , J. López-Santiago , R. J. Mathar , M. Ammler-von Eiff , E. W. Guenther , D. Barrado , J. I. González Hernández , L. Mancini , J. Stürmer , M. Abril , J. Aceituno , F. J. Alonso-Floriano , R. Antona , H. Anwand-Heerwart , B. Arroyo-Torres , M. Azzaro , D. Baroch , F. F. Bauer , S. Becerril , D. Benítez , Z. M. Berdiñas , G. Bergond , M. Blümcke , M. Brinkmöller , J. Cano , M. C. Cárdenas Vázquez , E. Casal , C. Cifuentes , A. Claret , J. Colomé , M. Cortés-Contreras , 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 , R. González-Peinado , U. Grözinger , S. Grohnert , J. Guàrdia , A. Guijarro , E. de Guindos , J. Gutiérrez-Soto , H. -J. Hagen , P. H. Hauschildt , R. P. Hedrosa , J. Helmling , I. Hermelo , R. Hernández Arabí , L. Hernández Castaño , F. Hernández Hernando , E. Herrero , A. Huber , P. Huke , E. Johnson , E. de Juan , M. Kim , R. Klein , J. Klüter , A. Klutsch , M. Lafarga , M. Lampón , L. M. Lara , W. Laun , U. Lemke , R. Lenzen , M. López del Fresno , J. López-González , M. López-Puertas , J. F. López Salas , R. Luque , H. Magán Madinabeitia , U. Mall , H. Mandel , E. Marfil , J. A. Marín Molina , D. Maroto Fernández , E. L. Martín , S. Martín-Ruiz , C. J. Marvin , E. Mirabet , A. Moya , M. E. Moreno-Raya , E. Nagel , V. Naranjo , L. Nortmann , A. Ofir , R. Oreiro , E. Pallé , J. Panduro , J. Pascual , V. M. Passegger , 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. Reinhardt , P. Rhode , H. -W. Rix , F. Rodler , E. Rodríguez , 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. Schiller , P. Schöfer , A. Schweitzer , E. Solano , O. Stahl , J. B. P. Strachan , J. C. Suárez , H. M. Tabernero , M. Tala , S. M. Tulloch , G. Veredas , J. I. Vico Linares , F. Vilardell , K. Wagner , J. Winkler , V. Wolthoff , W. Xu , F. Yan , M. R. Zapatero Osorio

The CARMENES search for exoplanets around M dwarfs - Photospheric parameters of target stars from high-resolution spectroscopy

The new CARMENES instrument comprises two high-resolution and high-stability spectrographs that are used to search for habitable planets around M dwarfs in the visible and near-infrared regime via the Doppler technique. Characterising our…

Solar and Stellar Astrophysics · Physics 2018-07-04 V. M. Passegger , A. Reiners , S. V. Jeffers , S. Wende-von Berg , P. Schoefer , J. A. Caballero , A. Schweitzer , P. J. Amado , V. J. S. Bejar , M. Cortes-Contreras , A. P. Hatzes , M. Kuerster , D. Montes , S. Pedraz , A. Quirrenbach , I. Ribas , W. Seifert

CARMENES input catalogue of M dwarfs V. Luminosities, colours, and spectral energy distributions

The relevance of M dwarfs in the search for potentially habitable Earth-sized planets has grown significantly in the last years. In our on-going effort to comprehensively and accurately characterise confirmed and potential planet-hosting M…

Solar and Stellar Astrophysics · Physics 2020-10-14 C. Cifuentes , J. A. Caballero , M. Cortes-Contreras , D. Montes , F. J. Abellan , R. Dorda , G. Holgado , M. R. Zapatero Osorio , J. C. Morales , P. Amado , V. M. Passegger , A. Quirrenbach , A. Reiners , I. Ribas , J. Sanz-Forcada , A. Schweitzer , W. Seifert , E. Solano

The CARMENES search for exoplanets around M dwarfs: Different roads to radii and masses of the target stars

We determine the radii and masses of 293 nearby, bright M dwarfs of the CARMENES survey. This is the first time that such a large and homogeneous high-resolution (R>80 000) spectroscopic survey has been used to derive these fundamental…

Solar and Stellar Astrophysics · Physics 2019-05-15 Andreas Schweitzer , V. M. Passegger , C. Cifuentes , V. J. S. Bejar , M. Cortes-Contreras , J. A. Caballero , C. del Burgo , S. Czesla , M. Kuerster , D. Montes , M. R. Zapatero Osorio , I. Ribas , A. Reiners , A. Quirrenbach , P. J. Amado , J. Aceituno , G. Anglada-Escud , F. F. Bauer , S. Dreizler , S. V. Jeffers , E. W. Guenther , T. Henning , A. Kaminski , M. Lafarga , E. Marfil , J. C. Morales , J. H. M. M. Schmitt , W. Seifert , E. Solano , H. M. Tabernero , M. Zechmeister

CARMENES input catalogue of M dwarfs IX. Multiplicity from close spectroscopic binaries to ultra-wide systems

Multiplicity studies greatly benefit from focusing on M dwarfs because they are often paired in a variety of configurations with both stellar and substellar objects, including exoplanets. We aim to address the observed multiplicity of M…

Solar and Stellar Astrophysics · Physics 2024-12-18 C. Cifuentes , J. A. Caballero , J. González-Payo , P. J. Amado , V. J. S. Béjar , A. J. Burgasser , M. Cortés-Contreras , N. Lodieu , D. Montes , A. Quirrenbach , A. Reiners , I. Ribas , J. Sanz-Forcada , W. Seifert , M. R. Zapatero Osorio

The CARMENES search for exoplanets around M dwarfs -- Photospheric parameters of target stars from high-resolution spectroscopy. II. Simultaneous multiwavelength range modeling of activity insensitive lines

We present precise photospheric parameters of 282 M dwarfs determined from fitting the most recent version of PHOENIX models to high-resolution CARMENES spectra in the visible (0.52 - 0.96 $\mu$m) and near-infrared wavelength range (0.96 -…

Solar and Stellar Astrophysics · Physics 2019-07-17 V. M. Passegger , A. Schweitzer , D. Shulyak , E. Nagel , P. H. Hauschildt , A. Reiners , P. J. Amado , J. A. Caballero , M. Cortés-Contreras , A. J. Domínguez-Fernández , A. Quirrenbach , I. Ribas , M. Azzaro , G. Anglada-Escudé , F. F. Bauer , V. J. S. Béjar , S. Dreizler , E. W. Guenther , T. Henning , S. V. Jeffers , A. Kaminski , M. Kürster , M. Lafarga , E. L. Martín , D. Montes , J. C. Morales , J. H. M. M. Schmitt , M. Zechmeister

The CARMENES search for exoplanets around M dwarfs. Occurrence rates of Earth-like planets around very low-mass stars

Aims: Previous estimates of planet occurrence rates in the CARMENES survey indicated increased numbers of planets on short orbits for M dwarfs with masses below 0.34\,M$_\odot$. Here we focused on the lowest-mass stars in the survey,…

Earth and Planetary Astrophysics · Physics 2025-04-09 A. Kaminski , S. Sabotta , J. Kemmer , P. Chaturvedi , R. Burn , J. C. Morales , J. A. Caballero , I. Ribas , A. Reiners , A. Quirrenbach , P. J. Amado , V. J. S. Béjar , S. Dreizler , E. W. Guenther , A. P. Hatzes , Th. Henning , M. Kürster , D. Montes , E. Nagel , E. Pallé , V. Pinter , S. Reffert , M. Schlecker , Y. Shan , T. Trifonov , M. R. Zapatero Osorio , M. Zechmeister

CARMENES input catalogue of M dwarfs IV. New rotation periods from photometric time series

Aims. The main goal of this work is to measure rotation periods of the M-type dwarf stars being observed by the CARMENES exoplanet survey to help distinguish radial-velocity signals produced by magnetic activity from those produced by…

Solar and Stellar Astrophysics · Physics 2019-01-30 E. Diez Alonso , J. A. Caballero , D. Montes , F. J. de Cos Juez , S. Dreizler , F. Dubois , S. V. Jeffers , S. Lalitha , R. Naves , A. Reiners , I. Ribas , S. Vanaverbeke , P. J. Amado , V. J. S. Bejar , M. Cortes-Contreras , E. Herrero , D. Hidalgo , M. Kurster , L. Logie , A. Quirrenbach , S. Rau , W. Seifert , P. Schofer , L. Tal-Or

Preparation & Scientific Explotation of CARMENES: The Metallicity of M-dwarfs

CARMENES is a next-generation instrument being built by a consortium of German and Spanish institutions to carry out a survey of 300 M-type dwarf stars with the goal of detecting exoearths by radial-velocity measurements. To collect…

Solar and Stellar Astrophysics · Physics 2022-06-09 R. González-Peinado

The CARMENES search for exoplanets around M dwarfs: High-resolution optical and near-infrared spectroscopy of 324 survey stars

The CARMENES radial velocity (RV) survey is observing 324 M dwarfs to search for any orbiting planets. In this paper, we present the survey sample by publishing one CARMENES spectrum for each M dwarf. These spectra cover the wavelength…

Solar and Stellar Astrophysics · Physics 2018-04-25 A. Reiners , M. Zechmeister , J. A. Caballero , I. Ribas , J. C. Morales , S. V. Jeffers , P. Schöfer , L. Tal-Or , A. Quirrenbach , P. J. Amado , A. Kaminski , W. Seifert , M. Abril , J. Aceituno , 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 , V. J. S. Béjar , 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 , M. Cortés-Contreras , S. Czesla , E. Díez-Alonso , S. Dreizler , 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 , J. Guàrdia , E. W. Guenther , A. Guijarro , E. de Guindos , J. Gutiérrez-Soto , H. -J. Hagen , 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. Johnson , E. de Juan , M. Kim , R. Klein , J. Klüter , A. Klutsch , M. Kürster , M. Lafarga , A. Lamert , M. Lampón , L. M. Lara , W. Laun , U. Lemke , R. Lenzen , R. Launhardt , M. López del Fresno , 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 , D. Montes , 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 , V. M. Passegger , 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 , A. Schweitzer , E. Solano , O. Stahl , J. B. P. Strachan , J. Stürmer , J. C. Suárez , H. M. Tabernero , M. Tala , T. Trifonov , 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

CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS

Context. CARMENES is a stabilised, high-resolution, double-channel spectrograph at the 3.5 m Calar Alto telescope. It is optimally designed for radial-velocity surveys of M dwarfs with potentially habitable Earth-mass planets. Aims. We…

Solar and Stellar Astrophysics · Physics 2015-02-27 F. J. Alonso-Floriano , J. C. Morales , J. A. Caballero , D. Montes , A. Klutsch , R. Mundt , M. Cortes-Contreras , I. Ribas , A. Reiners , P. J. Amado , A. Quirrenbach , S. V. Jeffers

The CARMENES search for exoplanets around M dwarfs -- Planet occurrence rates from a subsample of 71 stars

The CARMENES exoplanet survey of M dwarfs has obtained more than 18 000 spectra of 329 nearby M dwarfs over the past five years as part of its guaranteed time observations (GTO) program. We determine planet occurrence rates with the 71…

Earth and Planetary Astrophysics · Physics 2021-09-22 S. Sabotta , M. Schlecker , P. Chaturvedi , E. W. Guenther , I. Muñoz Rodríguez , J. C. Muñoz Sánchez , J. A. Caballero , Y. Shan , S. Reffert , I. Ribas , A. Reiners , A. P. Hatzes , P. J. Amado , H. Klahr , J. C. Morales , A. Quirrenbach , Th. Henning , S. Dreizler , E. Pallé , M. Perger , M. Azzaro , S. V. Jeffers , A. Kaminski , M. Kürster , M. Lafarga , D. Montes , V. M. Passegger , M. Zechmeister

The CARMENES search for exoplanets around M dwarfs. Guaranteed time observations Data Release 1 (2016-2020)

The CARMENES instrument was conceived to deliver high-accuracy radial velocity (RV) measurements with long-term stability to search for temperate rocky planets around a sample of nearby cool stars. The broad wavelength coverage was designed…

Earth and Planetary Astrophysics · Physics 2023-03-01 I. Ribas , A. Reiners , M. Zechmeister , J. A. Caballero , J. C. Morales , S. Sabotta , D. Baroch , P. J. Amado , A. Quirrenbach , M. Abril , J. Aceituno , G. Anglada-Escudé , M. Azzaro , D. Barrado , V. J. S. Béjar , D. Benítez de Haro , G. Bergond , P. Bluhm , R. Calvo Ortega , C. Cardona Guillén , P. Chaturvedi , C. Cifuentes , J. Colomé , D. Cont , M. Cortés-Contreras , S. Czesla , E. Díez-Alonso , S. Dreizler , C. Duque-Arribas , N. Espinoza , M. Fernández , B. Fuhrmeister , D. Galadí-Enríquez , A. García-López , E. González-Álvarez , J. I. González Hernández , E. W. Guenther , E. de Guindos , A. P. Hatzes , Th. Henning , E. Herrero , D. Hintz , Á. L. Huelmo , S. V. Jeffers , E. N. Johnson , E. de Juan , A. Kaminski , J. Kemmer , J. Khaimova , S. Khalafinejad , D. Kossakowski , M. Kürster , F. Labarga , M. Lafarga , S. Lalitha , M. Lampón , J. Lillo-Box , N. Lodieu , M. J. López González , M. López-Puertas , R. Luque , H. Magán , L. Mancini , E. Marfil , E. L. Martín , S. Martín-Ruiz , K. Molaverdikhani , D. Montes , E. Nagel , L. Nortmann , G. Nowak , E. Pallé , V. M. Passegger , A. Pavlov , S. Pedraz , V. Perdelwitz , M. Perger , A. Ramón-Ballesta , S. Reffert , D. Revilla , E. Rodríguez , C. Rodríguez-López , S. Sadegi , M. Á. Sánchez Carrasco , A. Sánchez-López , J. Sanz-Forcada , S. Schäfer , M. Schlecker , J. H. M. M. Schmitt , P. Schöfer , A. Schweitzer , W. Seifert , Y. Shan , S. L. Skrzypinski , E. Solano , O. Stahl , M. Stangret , S. Stock , J. Stürmer , H. M. Tabernero , L. Tal-Or , T. Trifonov , S. Vanaverbeke , F. Yan , M. R. Zapatero Osorio

Spectroscopic characterisation of CARMENES target candidates from FEROS, CAFE and HRS high-resolution spectra

CARMENES (Calar Alto high-Resolution search for M dwarfs with Exoearths with Near-infrared and optical Echelle Spectrographs) started a new planet survey on M-dwarfs in January this year. The new high-resolution spectrographs are operating…

Solar and Stellar Astrophysics · Physics 2016-12-07 V. M. Passegger , A. Reiners , S. V. Jeffers , S. Wende , P. Schöfer , P. J. Amado , J. A. Caballero , D. Montes , R. Mundt , I. Ribas , A. Quirrenbach , the CARMENES Consortium

CARMENES input catalogue of M dwarfs: III. Rotation and activity from high-resolution spectroscopic observations

CARMENES is a spectrograph for radial velocity surveys of M dwarfs with the aim of detecting Earth-mass planets orbiting in the habitable zones of their host stars. To ensure an optimal use of the CARMENES Guaranteed Time Observations, in…

Solar and Stellar Astrophysics · Physics 2018-06-20 S. V. Jeffers , P. Schoefer , A. Lamert , A. Reiners , D. Montes , J. A. Caballero , M. Cortes-Contreras , C. J. Marvin , V. M. Passegger , M. Zechmeister , A. Quirrenbach , F. J. Alonso-Floriano , P. J. Amado , F. F. Bauer , E. Casal , E. Diez Alonso , E. Herrero , J. C. Morales , R. Mundt , I. Ribas , L. F. Sarmiento

The CARMENES search for exoplanets around M dwarfs -- A deep learning approach to determine fundamental parameters of target stars

Existing and upcoming instrumentation is collecting large amounts of astrophysical data, which require efficient and fast analysis techniques. We present a deep neural network architecture to analyze high-resolution stellar spectra and…

Solar and Stellar Astrophysics · Physics 2020-09-30 V. M. Passegger , A. Bello-García , J. Ordieres-Meré , J. A. Caballero , A. Schweitzer , A. González-Marcos , I. Ribas , A. Reiners , A. Quirrenbach , P. J. Amado , M. Azzaro , F. F. Bauer , V. J. S. Béjar , M. Cortés-Contreras , S. Dreizler , A. P. Hatzes , Th. Henning , S. V. Jeffers , A. Kaminski , M. Kürster , M. Lafarga , E. Marfil , D. Montes , J. C. Morales , E. Nagel , L. M. Sarro , E. Solano , H. M. Tabernero , M. Zechmeister

CARMENES as an Instrument for Exoplanet Research

CARMENES stands for Calar Alto high-Resolution search for M dwarfs with Exoearths with Near-infrared and optical \'Echelle Spectrographs. CARMENES took six years from a concept to the start of operations, and a couple more years of initial…

Earth and Planetary Astrophysics · Physics 2025-03-10 José A. Caballero , Walter Seifert , Andreas Quirrenbach , Pedro J. Amado , Ignasi Ribas , Ansgar Reiners