J/A+A/552/A78 Solar like stars radial velocities (Zechmeister+, 2013)
The planet search programme at the ESO Coude Echelle spectrometer and HARPS.
IV. The search for Jupiter analogues around solar-like stars.
Zechmeister M., Kuerster M., Endl M., Lo Curto G. , Hartman H.,
Nilsson H., Henning T., Hatzes A. P., Cochran W. D.
<Astron. Astrophys. 552, A78 (2013)>
=2013A&A...552A..78Z 2013A&A...552A..78Z
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities
Keywords: stars: general - stars: planetary systems -
techniques: radial velocities - methods: data analysis
Abstract:
In 1992 we began a precision radial velocity (RV) survey for planets
around solar-like stars with the Coude Echelle Spectrograph and the
Long Camera (CES LC) at the 1.4m telescope in La Silla (Chile). We
have continued the survey with the upgraded CES Very Long Camera (VLC)
and HARPS, both at the 3.6m telescope, until 2007. The observations
for 31 stars cover a time span of up to 15 years and the RV precision
permit a search for Jupiter analogues. We perform a joint analysis for
variability, trends, periodicities, and Keplerian orbits and compute
detection limits. Moreover, the HARPS RVs are analysed for
correlations with activity indicators (CaII H&K and CCF shape).
We achieve a long-term RV precision of 15m/s (CES+LC, 1992-1998), 9m/s
(CES+VLC, 1999-2006), and 2.8m/s (HARPS, 2003-2009, including archive
data), resp. This enables us to confirm the known planets around Iota
Hor, HR 506, and HR 3259. A steady RV trend for Eps Ind A can be
explained by a planetary companion. On the other hand, we find
previously reported trends to be smaller for Beta Hyi and not present
for Alp Men. The candidate planet Eps Eri b was not detected despite
our better precision. Also the planet announced for HR 4523 cannot be
confirmed. Long-term trends in several of our stars are compatible
with known stellar companions. We provide a spectroscopic orbital
solution for the binary HR 2400 and refined solutions for the planets
around HR 506 and Iota Hor. For some other stars the variations could
be attributed to stellar activity.
Description:
The catalogue is composed of radial velocity timeseries for 31 stars
obtained with three instruments (CES+LC,CES+VLC,HARPS). Additionally
the HARPS timeseries include activity indicators (logR'HK and Bisector
span, FWHM, and Contrast of the cross correlation function).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 139 31 Studied stars
lc/* . 31 CES+LC radial velocities
vlc/* . 31 CES+VLC radial velocities
harps/* . 31 HARPS radial velocities and activity index
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See also:
J/A+A/487/373 : Spectroscopic parameters of 451 HARPS-GTO stars (Sousa+, 2008)
J/A+A/497/563 : Chemical abundances of 451 stars (Neves+, 2009)
J/A+A/496/527 : Radial velocity curves of HD 47186 & HD 181433 (Bouchy+, 2009)
J/A+A/505/859 : M dwarfs radial velocities (Zechmeister+, 2009)
J/A+A/526/A99 : Metal-poor solar-type stars spectroscopy & masses (Sousa+ 2011)
J/A+A/545/A32 : Chemical abundances of 1111 stars (Adibekyan+, 2012)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HR]
4- 7 I4 --- HR HR number (see Cat. V/50)
9- 17 A9 --- OName Other star name
19- 20 I2 h RAh Simbad Hour of Right Ascension (J2000.0)
22- 23 I2 min RAm Simbad Minute of Right Ascension (J2000.0)
25- 28 F4.1 s RAs Simbad Second of Right Ascension (J2000.0)
30 A1 --- DE- Simbad Sign of the Declination (J2000.0)
31- 32 I2 deg DEd Simbad Degree of Declination (J2000.0)
34- 35 I2 arcmin DEm Simbad Arcminute of Declination (J2000.0)
37- 38 I2 arcsec DEs Simbad Arcsecond of Declination (J2000.0)
40- 45 A6 --- SpType MK spectral type (1)
47- 51 F5.2 mag Vmag Visual magnitude (2)
53- 58 F6.2 pc d Heliocentric distance (3)
60- 63 F4.2 m/s/yr SA Secular radial velocity acceleration (dRV/dt)
65- 68 F4.2 Msun Mass Stellar mass estimate
70- 71 A2 --- r_Mass Reference for the stellar mass estimate (4)
73- 80 F8.3 km/s Mean HARPS radial velocity (5)
82- 87 F6.3 --- <logR'HK> Mean of activity index logR'(HK) (6)
89- 93 F5.3 --- s<logR'HK> Scatter (rms) of activity index logR'(HK)
95- 96 A2 --- src [ABP? ] Probable main source of RV
variations: Activity, Binarity, or Planet.
99-111 A13 --- LCfile Name of the table containing CES LC RVs,
in subdirectory lc
113-125 A13 --- VLCfile Name of the table containing CES VLC RVs,
in subdirectory vlc
127-139 A13 --- HARPSfile Name of the table containing HARPS RVs,
in subdirectory harps
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Note (1): From Bright Star Catalogue, Hoffleit & Jaschek, 1991, Cat. V/50.
Note (2): From Hipparcos, Perryman et al., 1997A&A...323L..49P 1997A&A...323L..49P, Cat. I/239.
Note (3): From Hipparcos, van Leuuwen, 2007A&A...474..653V 2007A&A...474..653V, Cat. I/311.
Note (4): References as follows:
D = Dravins et al., 1998A&A...330.1077D 1998A&A...330.1077D
DS = Drake and Smith, 1993ApJ...412..797D 1993ApJ...412..797D
G = Gray, 1988lsla.book.....G 1988lsla.book.....G, Lectures on spectral-line
analysis: F,G, and K stars
PM = Porto de Mello, priv. comm.
P = Pourbaix et al., 2002A&A...386..280P 2002A&A...386..280P
T = Teixeira et al., 2009A&A...494..237T 2009A&A...494..237T
V = Vauclair et al., 2008A&A...482L...5V 2008A&A...482L...5V
Note (5): wrt. to the epoch with Julian date 2450000
(accounts for the secular acceleration SA)
Note (6): for HARPS measurements
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Byte-by-byte Description of file: lc/* vlc/*
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Bytes Format Units Label Explanations
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1- 16 F16.8 d BJD Barycentric Julian date
18- 27 F10.2 m/s RV Barycentric radial velocity (1)
29- 34 F6.2 m/s e_RV Uncertainty on RV
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Note (1): An offset from best joint fit model was added to the originally
differential RV measurements to match the HARPS reference frame.
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Byte-by-byte Description of file: harps/*
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Bytes Format Units Label Explanations
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1- 16 F16.8 d BJD Barycentric Julian date
18- 27 F10.2 m/s RV Barycentric radial velocity
29- 34 F6.2 m/s e_RV Uncertainty on RV (1)
36- 43 F8.4 [-] logR'(HK) Activity index logR'(HK)
45- 51 F7.4 [-] e_logR'(HK) Uncertainty on logR'(HK)
53- 60 F8.5 --- SHK CaII H+K index
62- 69 F8.5 --- e_SHK Uncertainty on SHK
71- 78 F8.2 m/s BIS Bisector Inverse Slope (2)
80- 87 F8.4 km/s FWHM Full-Width-at-Half-Maximum (2)
89- 96 F8.4 % Cont Contrast (2)
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Note (1): Uncertainty from the HARPS cross-correlation function.
Note (2): Parameters of the HARPS cross-correlation function.
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Acknowledgements:
Mathias Zechmeister, zechmeister(at)astro.physik.uni-goettingen.de
(End) Patricia Vannier [CDS] 06-Dec-2012