2022A&A...657A..87O


Query : 2022A&A...657A..87O

2022A&A...657A..87O - Astronomy and Astrophysics, volume 657A, 87-87 (2022/1-1)

CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars,.

OTTONI G., UDRY S., SEGRANSAN D., BULDGEN G., LOVIS C., EGGENBERGER P., PEZZOTTI C., ADIBEKYAN V., MARMIER M., MAYOR M., SANTOS N.C., SOUSA S.G., LAGARDE N. and CHARBONNEL C.

Abstract (from CDS):


Context. Following the first discovery of a planet orbiting a giant star in 2002, we started the CORALIE radial-velocity search for companions around evolved stars. We present the observations of three stars conducted at the 1.2 m Leonard Euler Swiss telescope at La Silla Observatory, Chile, using the CORALIE spectrograph.
Aims. We aim to detect planetary companions to intermediate-mass G- and K- type evolved stars and perform a statistical analysis of this population. We searched for new planetary systems around the stars HD 22532 (TIC 200851704), HD 64121 (TIC 264770836), and HD 69123 (TIC 146264536).
Methods. We have followed a volume-limited sample of 641 red giants since 2006 to obtain high-precision radial-velocity measurements. We used the Data & Analysis Center for Exoplanets platform to perform a radial-velocity analysis to search for periodic signals in the line profile and activity indices, to distinguish between planetary-induced radial-velocity variations and stellar photospheric jitter, and to search for significant signals in the radial-velocity time series to fit a corresponding Keplerian model.
Results. In this paper, we present the survey in detail, and we report on the discovery of the first three planets of the sample around the giant stars HD 22532, HD 64121, and HD 69123.

Abstract Copyright: © ESO 2022

Journal keyword(s): techniques: radial velocities - planets and satellites: detection - planetary systems

VizieR on-line data: <Available at CDS (J/A+A/657/A87): table2.dat>

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 22532b Pl? 03 35 15.4760346744 -49 25 02.638630920           ~ 2 0
2 HD 22532 PM* 03 35 15.4760346744 -49 25 02.638630920   8.76 7.84     G8III/IV 16 0
3 HD 41248 PM* 06 00 32.7813939624 -56 09 42.597168768   9.42 8.81     G2V 67 1
4 HD 64121 PM* 07 49 27.6379572528 -54 48 44.243614332   8.32 7.43     G8/K0III 18 0
5 HD 64121b Pl? 07 49 27.6379572528 -54 48 44.243614332           ~ 2 0
6 HD 69123b Pl? 08 14 13.2562210824 -35 29 24.067626504           ~ 2 0
7 HD 69123 PM* 08 14 13.2562210824 -35 29 24.067626504   6.802 5.765     K1III 25 0
8 * tau Boo Ro* 13 47 15.7381720026 +17 27 24.809555600 5.02 4.98 4.49 4.09 3.85 F7IV-V 953 1
9 * iot Dra V* 15 24 55.7746265 +58 57 57.834445 5.68 4.45 3.29 2.51 1.91 K2III 393 1
10 * 51 Peg b Pl 22 57 27.9804167474 +20 46 07.782240714           ~ 620 1
11 * gam Cep SB* 23 39 20.9104133784 +77 37 56.510781384 5.190 4.250   2.6   K1III-IVCN1 579 1

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2023.01.30-21:52:23

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