2019A&A...627A..49Z


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.25CET09:31:14

2019A&A...627A..49Z - Astronomy and Astrophysics, volume 627A, 49-49 (2019/7-1)

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., BEJAR V.J.S., GONZALEZ-CUESTA L., HERRERO E., LALITHA S., LOPEZ-GONZALEZ M.J., LUQUE R., MORALES J.C., PALLE E., RODRIGUEZ E., RODRIGUEZ LOPEZ C., TAL-OR L., ANGLADA-ESCUDE G., QUIRRENBACH A., AMADO P.J., ABRIL M., ACEITUNO F.J., ACEITUNO J., ALONSO-FLORIANO F.J., AMMLER-VON EIFF M., ANTONA JIMENEZ R., ANWAND-HEERWART H., ARROYO-TORRES B., AZZARO M., BAROCH D., BARRADO D., BECERRIL S., BENITEZ D., BERDINAS Z.M., BERGOND G., BLUHM P., BRINKMOLLER M., DEL BURGO C., CALVO ORTEGA R., CANO J., CARDONA GUILLEN C., CARRO J., CARDENAS VAZQUEZ M.C., CASAL E., CASASAYAS-BARRIS N., CASANOVA V., CHATURVEDI P., CIFUENTES C., CLARET A., COLOME J., CORTES-CONTRERAS M., CZESLA S., DIEZ-ALONSO E., DORDA R., FERNANDEZ M., FERNANDEZ-MARTIN A., FUHRMEISTER B., FUKUI A., GALADI-ENRIQUEZ D., GALLARDO CAVA I., GARCIA DE LA FUENTE J., GARCIA-PIQUER A., GARCIA VARGAS M.L., GESA L., GONGORA RUEDA J., GONZALEZ-ALVAREZ E., GONZALEZ HERNANDEZ J.I., GONZALEZ-PEINADO R., GROZINGER U., GUARDIA J., GUIJARRO A., DE GUINDOS E., HATZES A.P., HAUSCHILDT P.H., HEDROSA R.P., HELMLING J., HENNING T., HERMELO I., HERNANDEZ ARABI R., HERNANDEZ CASTANO L., HERNANDEZ 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., KLUTER J., KLUTSCH A., KOSSAKOWSKI D., KURSTER M., LABARGA F., LAFARGA M., LLAMAS M., LAMPON M., LARA L.M., LAUNHARDT R., LAZARO F.J., LODIEU N., LOPEZ DEL FRESNO M., LOPEZ-PUERTAS M., LOPEZ SALAS J.F., LOPEZ-SANTIAGO J., MAGAN MADINABEITIA H., MALL U., MANCINI L., MANDEL H., MARFIL E., MARIN MOLINA J.A., MAROTO FERNANDEZ D., MARTIN E.L., MARTIN-FERNANDEZ P., MARTIN-RUIZ S., MARVIN C.J., MIRABET E., MONTANES-RODRIGUEZ 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., PEREZ-CALPENA A., PEREZ MEDIALDEA D., PERGER M., PERRYMAN M.A.C., RABAZA O., RAMON BALLESTA A., REBOLO R., REDONDO P., REFFERT S., REINHARDT S., RHODE P., RIX H.-W., RODLER F., RODRIGUEZ TRINIDAD A., ROSICH A., SADEGI S., SANCHEZ-BLANCO E., SANCHEZ CARRASCO M.A., SANCHEZ-LOPEZ A., SANZ-FORCADA J., SARKIS P., SARMIENTO L.F., SCHAFER S., SCHMITT J.H.M.M., SCHOFER P., SCHWEITZER A., SEIFERT W., SHULYAK D., SOLANO E., SOTA A., STAHL O., STOCK S., STRACHAN J.B.P., STUBER T., STURMER J., SUAREZ 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. and ZAPATERO OSORIO M.R.

Abstract (from CDS):

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 1.1M minimum mass, orbiting at periods of 4.91 and 11.4d, 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.

Abstract Copyright: © ESO 2019

Journal keyword(s): methods: data analysis - planetary systems - stars: late-type - stars: individual: Teegarden's Star

VizieR on-line data: <Available at CDS (J/A+A/627/A49): rv_vis.dat rv_nir.dat>

Simbad objects: 16

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Number of rows : 16

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Teegarden's Star c Pl 02 53 00.8913291021 +16 52 52.642086267           ~ 5 0
2 NAME Teegarden's Star b Pl 02 53 00.8913291021 +16 52 52.642086267           ~ 4 0
3 NAME Teegarden's Star LM* 02 53 00.8913291021 +16 52 52.642086267   17.21   14.1   dM6 111 0
4 K2-101b Pl 08 41 22.5783122210 +18 56 01.949079322           ~ 13 0
5 LP 321-222 LM* 12 46 51.6146466517 +31 48 10.899277087   19.9   17.7   M5V 33 0
6 V* V645 Cen Er* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 986 0
7 NAME V645 Cen b Pl 14 29 42.9451234609 -62 40 46.170818907           ~ 224 0
8 HD 156384C PM* 17 18 58.8271844065 -34 59 48.612934284 12.96 11.79 10.22 10.05 8.82 M1.5V 164 1
9 Kepler-62 Ro* 18 52 51.0518996853 +45 20 59.400075457   14.4 13.8     G5 100 1
10 Kepler-442 Ro* 19 01 27.9742963430 +39 16 48.223608589           ~ 25 0
11 Kepler-1229 Ro* 19 49 56.8075700263 +46 59 48.107320261           ~ 38 0
12 K2-112g Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 106 0
13 K2-112b Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 127 0
14 K2-112e Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 141 0
15 K2-112f Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 116 0
16 TRAPPIST-1 LM* 23 06 29.3684052886 -05 02 29.031690445     18.798 16.466 14.024 M7.5e 534 0

    Equat.    Gal    SGal    Ecl

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2020.10.25-09:31:14

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