2020A&A...640A..50B

Query : 2020A&A...640A..50B

2020A&A...640A..50B - Astronomy and Astrophysics, volume 640A, 50-50 (2020/8-1)

The CARMENES search for exoplanets around M dwarfs. Measuring precise radial velocities in the near infrared: The example of the super-Earth CD Cet b.

BAUER F.F., ZECHMEISTER M., KAMINSKI A., RODRIGUEZ LOPEZ C., CABALLERO J.A., AZZARO M., STAHL O., KOSSAKOWSKI D., QUIRRENBACH A., BECERRIL JARQUE S., RODRIGUEZ E., AMADO P.J., SEIFERT W., REINERS A., SCHAFER S., RIBAS I., BEJAR V.J.S., CORTES-CONTRERAS M., DREIZLER S., HATZES A., HENNING T., JEFFERS S.V., KURSTER M., LAFARGA M., MONTES D., MORALES J.C., SCHMITT J.H.M.M., SCHWEITZER A. and SOLANO E.

Abstract (from CDS):

The high-resolution, dual channel, visible and near-infrared spectrograph CARMENES offers exciting opportunities for stellar and exoplanetary research on M dwarfs. In this work we address the challenge of reaching the highest radial velocity precision possible with a complex, actively cooled, cryogenic instrument, such as the near-infrared channel. We describe the performance of the instrument and the work flow used to derive precise Doppler measurements from the spectra. The capability of both CARMENES channels to detect small exoplanets is demonstrated with the example of the nearby M5.0 V star CD Cet (GJ 1057), around which we announce a super-Earth (4.0±0.4M⊕) companion on a 2.29d orbit.

Abstract Copyright: © ESO 2020

Journal keyword(s): planetary systems - techniques: radial velocities - stars: individual: CD Cet - stars: late-type

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME CD Cet b Pl? 03 13 22.9175070353 +04 46 29.336548127           ~ 5 0
2 V* CD Cet BY* 03 13 22.9175070353 +04 46 29.336548127   15.61 14.001 13.650   M4.5V 135 0
3 HD 20369 ** 03 16 45.67588 +05 01 10.0945           G2/3V 27 0
4 * 51 Peg b Pl 22 57 27.9804852576 +20 46 07.797040104           ~ 666 1

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