The CARMENES search for exoplanets around M dwarfs: Two temperate Earth-mass 
planet candidates around Teegarden’s Star

Zechmeister, M.; Dreizler, S.; Ribas, I.; Reiners, A.; Caballero, J. A.; Bauer, F. F.; Béjar, V. J. S.; González-Cuesta, L.; Herrero, E.; Lalitha, S.; López-González, M. J.; Luque, R.; Morales, J. C.; Pallé, E.; Rodríguez, E.; Rodríguez López, C.; Tal-Or, L.; Anglada-Escudé, G.; Quirrenbach, A.; Amado, P. J.; Abril, M.; Aceituno, F. J.; Aceituno, J.; Alonso-Floriano, F. J.; Ammler-von Eiff, Matthias; Antona Jiménez, R.; Anwand-Heerwart, H.; Arroyo-Torres, B.; Azzaro, M.; Baroch, D.; Barrado, D.; Becerril, S.; Benítez, D.; Berdiñas, Z. M.; Bergond, G.; Bluhm, P.; Brinkmöller, M.; del Burgo, C.; Calvo Ortega, R.; Cano, J.; Cardona Guillén, C.; Carro, J.; Cárdenas Vázquez, M. C.; Casal, E.; Casasayas-Barris, N.; Casanova, V.; Chaturvedi, P.; Cifuentes, C.; Claret, A.; Colomé, J.; Cortés-Contreras, M.; Czesla, S.; Díez-Alonso, E.; Dorda, R.; Fernández, M.; Fernández-Martín, A.; Fuhrmeister, B.; Fukui, A.; Galadí-Enríquez, D.; Gallardo Cava, I.; Garcia de la Fuente, J.; Garcia-Piquer, A.; Garcia Vargas, M. L.; Gesa, L.; Góngora Rueda, J.; González-Álvarez, E.; González Hernández, J. I.; González-Peinado, R.; Grözinger, U.; Guàrdia, J.; Guijarro, A.; de Guindos, E.; Hatzes, A. P.; Hauschildt, P. H.; Hedrosa, R. P.; Helmling, J.; Henning, T.; Hermelo, I.; Hernández Arabi, R.; Hernández Castaño, L.; Hernández Otero, F.; Hintz, D.; Huke, P.; Huber, A.; Jeffers, S. V.; Johnson, E. N.; de Juan, E.; Kaminski, A.; Kemmer, J.; Kim, M.; Klahr, H.; Klein, R.; Klüter, J.; Klutsch, A.; Kossakowski, D.; Kürster, M.; Labarga, F.; Lafarga, M.; Llamas, M.; Lampón, M.; Lara, L. M.; Launhardt, R.; Lázaro, F. J.; Lodieu, N.; López del Fresno, M.; López-Puertas, M.; López Salas, J. F.; López-Santiago, J.; Magán Madinabeitia, H.; Mall, U.; Mancini, L.; Mandel, H.; Marfil, E.; Marin Molina, J. A.; Maroto Fernández, D.; Martín, E. L.; Martín-Fernández, P.; Martín-Ruiz, S.; Marvin, C. J.; Mirabet, E.; Montañés-Rodríguez, P.; Montes, D.; Moreno-Raya, M. E.; Nagel, E.; Naranjo, V.; Narita, N.; Nortmann, L.; Nowak, G.; Ofir, A.; Oshagh, M.; Panduro, J.; Parviainen, H.; Pascual, J.; Passegger, V. M.; Pavlov, A.; Pedraz, S.; Pérez-Calpena, A.; Pérez Medialdea, D.; Perger, M.; Perryman, M. A. C.; Rabaza, O.; Ramón Ballesta, A.; Rebolo, R.; Redondo, P.; Reffert, S.; Reinhardt, S.; Rhode, P.; Rix, H.-W.; Rodler, F.; Rodríguez Trinidad, A.; 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.; Schöfer, P.; Schweitzer, A.; Seifert, W.; Shulyak, Denis; Solano, E.; Sota, A.; Stahl, O.; Stock, S.; Strachan, J. B. P.; Stuber, T.; Stürmer, J.; Suárez, J. C.; Tabernero, H. M.; Tala Pinto, M.; Trifonov, T.; Veredas, G.; Vico Linares, J. I.; Vilardell, F.; Wagner, K.; Wolthoff, V.; Xu, W.; Yan, F.; Zapatero Osorio, M. R.

doi:10.1051/0004-6361/201935460

Local TagsRelease HistoryDetailsSummary

The CARMENES search for exoplanets around M dwarfs: Two temperate Earth-mass planet candidates around Teegarden’s Star

Zechmeister, M., Dreizler, S., Ribas, I., Reiners, A., Caballero, J. A., Bauer, F. F., et al. (2019). The CARMENES search for exoplanets around M dwarfs: Two temperate Earth-mass planet candidates around Teegarden’s Star. Astronomy and Astrophysics, 627: A49. doi:10.1051/0004-6361/201935460.

Item is Released

show all hide all

Basic

show hide

Item Permalink: https://hdl.handle.net/21.11116/0000-0006-5B7A-C Version Permalink: https://hdl.handle.net/21.11116/0000-0006-5B7B-B

Genre: Journal Article

Files

show Files

Locators

show

Creators

show

hide

Creators:
Zechmeister, M., Author
Dreizler, S., Author
Ribas, I., Author
Reiners, A., Author
Caballero, J. A., Author
Bauer, F. F., Author
Béjar, V. J. S., Author
González-Cuesta, L., Author
Herrero, E., Author
Lalitha, S., Author
López-González, M. J., Author
Luque, R., Author
Morales, J. C., Author
Pallé, E., Author
Rodríguez, E., Author
Rodríguez López, C., Author
Tal-Or, L., Author
Anglada-Escudé, G., Author
Quirrenbach, A., Author
Amado, P. J., Author
Abril, M., AuthorAceituno, F. J., AuthorAceituno, J., AuthorAlonso-Floriano, F. J., AuthorAmmler-von Eiff, Matthias¹, Author Antona Jiménez, R., AuthorAnwand-Heerwart, H., AuthorArroyo-Torres, B., AuthorAzzaro, M., AuthorBaroch, D., AuthorBarrado, D., AuthorBecerril, S., AuthorBenítez, D., AuthorBerdiñas, Z. M., AuthorBergond, G., AuthorBluhm, P., AuthorBrinkmöller, M., Authordel Burgo, C. , AuthorCalvo Ortega, R. , AuthorCano, J., AuthorCardona Guillén, C., AuthorCarro, J., AuthorCárdenas Vázquez, M. C. , AuthorCasal, E., AuthorCasasayas-Barris, N., AuthorCasanova, V., AuthorChaturvedi, P., AuthorCifuentes, C., AuthorClaret, A., AuthorColomé, J., AuthorCortés-Contreras, M., AuthorCzesla, S., AuthorDíez-Alonso, E., AuthorDorda, R., AuthorFernández, M., AuthorFernández-Martín, A., AuthorFuhrmeister, B., AuthorFukui, A., AuthorGaladí-Enríquez, D., AuthorGallardo Cava, I. , AuthorGarcia de la Fuente, J. , AuthorGarcia-Piquer, A., AuthorGarcia Vargas, M. L. , AuthorGesa, L., AuthorGóngora Rueda, J. , AuthorGonzález-Álvarez, E., AuthorGonzález Hernández, J. I. , AuthorGonzález-Peinado, R., AuthorGrözinger, U., AuthorGuàrdia, J., AuthorGuijarro, A., Authorde Guindos, E., AuthorHatzes, A. P., AuthorHauschildt, P. H., AuthorHedrosa, R. P., AuthorHelmling, J., AuthorHenning, T., AuthorHermelo, I., AuthorHernández Arabi, R. , AuthorHernández Castaño, L. , AuthorHernández Otero, F. , AuthorHintz, D., AuthorHuke, P., AuthorHuber, A., AuthorJeffers, S. V., AuthorJohnson, E. N., Authorde Juan, E., AuthorKaminski, A., AuthorKemmer, J., AuthorKim, M., AuthorKlahr, H., AuthorKlein, R., AuthorKlüter, J., AuthorKlutsch, A., AuthorKossakowski, D., AuthorKürster, M., AuthorLabarga, F., AuthorLafarga, M., AuthorLlamas, M., AuthorLampón, M., AuthorLara, L. M., AuthorLaunhardt, R., AuthorLázaro, F. J., AuthorLodieu, N., AuthorLópez del Fresno, M. , AuthorLópez-Puertas, M., AuthorLópez Salas, J. F. , AuthorLópez-Santiago, J., AuthorMagán Madinabeitia, H. , AuthorMall, U., AuthorMancini, L., AuthorMandel, H., AuthorMarfil, E., AuthorMarin Molina, J. A. , AuthorMaroto Fernández, D. , AuthorMartín, E. L., AuthorMartín-Fernández, P., AuthorMartín-Ruiz, S., AuthorMarvin, C. J., AuthorMirabet, E., AuthorMontañés-Rodríguez, P., AuthorMontes, D., AuthorMoreno-Raya, M. E., AuthorNagel, E., AuthorNaranjo, V., AuthorNarita, N., AuthorNortmann, L., AuthorNowak, G., AuthorOfir, A., AuthorOshagh, M., AuthorPanduro, J., AuthorParviainen, H., AuthorPascual, J., AuthorPassegger, V. M., AuthorPavlov, A., AuthorPedraz, S., AuthorPérez-Calpena, A., AuthorPérez Medialdea, D. , AuthorPerger, M., AuthorPerryman, M. A. C., AuthorRabaza, O., AuthorRamón Ballesta, A. , AuthorRebolo, R., AuthorRedondo, P., AuthorReffert, S., AuthorReinhardt, S., AuthorRhode, P., AuthorRix, H.-W., AuthorRodler, F., AuthorRodríguez Trinidad, A. , AuthorRosich, A., AuthorSadegi, S., AuthorSánchez-Blanco, E., AuthorSánchez Carrasco, M. A. , AuthorSánchez-López, A., AuthorSanz-Forcada, J., AuthorSarkis, P., AuthorSarmiento, L. F., AuthorSchäfer, S., AuthorSchmitt, J. H. M. M., AuthorSchöfer, P., AuthorSchweitzer, A., AuthorSeifert, W., AuthorShulyak, Denis², Author Solano, E., AuthorSota, A., AuthorStahl, O., AuthorStock, S., AuthorStrachan, J. B. P., AuthorStuber, T., AuthorStürmer, J., AuthorSuárez, J. C., AuthorTabernero, H. M., AuthorTala Pinto, M. , AuthorTrifonov, T., AuthorVeredas, G., AuthorVico Linares, J. I. , AuthorVilardell, F., AuthorWagner, K., AuthorWolthoff, V., AuthorXu, W., AuthorYan, F., AuthorZapatero Osorio, M. R. , Author more..

Affiliations:
1Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832287
2Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288

Content

show

hide

Free keywords: -

Abstract: Context. Teegarden’s Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0 V), the star shows relatively little activity and is a prime target for near-infrared radial velocity surveys such as CARMENES.

Aims. As part of the CARMENES search for exoplanets around M dwarfs, we obtained more than 200 radial-velocity measurements of Teegarden’s Star and analysed them for planetary signals.

Methods. We find periodic variability in the radial velocities of Teegarden’s Star. We also studied photometric measurements to rule out stellar brightness variations mimicking planetary signals.

Results. We find evidence for two planet candidates, each with 1.1 M⊕ minimum mass, orbiting at periods of 4.91 and 11.4 d, respectively. No evidence for planetary transits could be found in archival and follow-up photometry. Small photometric variability is suggestive of slow rotation and old age.

Conclusions. The two planets are among the lowest-mass planets discovered so far, and they are the first Earth-mass planets around an ultra-cool dwarf for which the masses have been determined using radial velocities.

Details

show

hide

Language(s): eng - English

Dates: Published Online: 2019

Publication Status: Published online

Pages: -

Publishing info: -

Table of Contents: -

Rev. Type: Peer

Identifiers: DOI: 10.1051/0004-6361/201935460

Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show

hide

Title: Astronomy and Astrophysics

Other : Astron. Astrophys.

Source Genre: Journal

Creator(s):

Affiliations:

Publ. Info: Les Ulis Cedex A France : EDP Sciences

Pages: - Volume / Issue: 627 Sequence Number: A49 Start / End Page: - Identifier: Other: 1432-0746
ISSN: 0004-6361
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1