J/ApJS/210/5 The twenty-five year Lick planet search (Fischer+, 2014)
The twenty-five year Lick planet search.
Fischer D.A., Marcy G.W., Spronck J.F.P.
<Astrophys. J. Suppl. Ser., 210, 5 (2014)>
=2014ApJS..210....5F 2014ApJS..210....5F
ADC_Keywords: Planets ; Radial velocities ; Stars, double and multiple ;
Surveys ; Photometry, UBV
Keywords: surveys; techniques: radial velocities
Abstract:
The Lick Planet Search program began in 1987 when the first spectrum
of τ Ceti was taken with an iodine cell and the Hamilton
Spectrograph. Upgrades to the instrument improved the Doppler
precision from about 10m/s in 1992 to about 3m/s in 1995. The project
detected dozens of exoplanets with orbital periods ranging from a few
days to several years. The Lick survey identified the first planet in
an eccentric orbit (70 Virginis) and the first multi-planet system
around a normal main sequence star (Upsilon Andromedae). These
discoveries advanced our understanding of planet formation and orbital
migration. Data from this project helped to quantify a correlation
between host star metallicity and the occurrence rate of gas giant
planets. The program also served as a test bed for innovation with
testing of a tip-tilt system at the Coudé focus and fiber scrambler
designs to stabilize illumination of the spectrometer optics. The Lick
Planet Search with the Hamilton Spectrograph effectively ended when a
heater malfunction compromised the integrity of the iodine cell. Here,
we present more than 14000 velocities for 386 stars that were surveyed
between 1987 and 2011.
Description:
The Hamilton Spectrograph is a high-resolution optical echelle
spectrometer that is located at the Coude focus of the 3m Shane
telescope with a second light feed from the Coude Auxiliary Telescope
(CAT), which is a siderostat-fed 0.6m telescope. The CAT enables use
of the spectrometer when other instruments are being used on the 3m
telescope. The free spectral range can include 3400-9000Å in a
single observation. The instrument resolution varies from 50000-115000
depending primarily on the choice of decker (the width of the entrance
slit).
One of the most impactful changes to the Lick Planet Search project
involved a series of upgrades of CCD detectors. The pixel size and
charge transfer characteristics of the detector affect the spectral
resolution and contribute to the spectral line spread function (SLSF;
Spronck et al. 2013PASP..125..511S 2013PASP..125..511S) so that CCD replacements can
introduce velocity offsets that required zero-point corrections based
on "standard" stars in the program (stars with low rms velocities).
See section 3 for detailed explanations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 386 Star sample
table2.dat 44 17275 Radial velocity measurements for 383 stars
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
J/A+A/552/A78 : Solar like stars radial velocities (Zechmeister+, 2013)
J/A+A/526/A112 : Radial velocities of HARPS metal-poor sample (Santos+, 2011)
J/ApJ/725/875 : Chromospheric activity for CPS stars (Isaacson+, 2010)
J/ApJ/719/890 : Keck radial velocities of GJ 876 (Rivera+, 2010)
J/A+A/511/A21 : Radial velocities of GJ876 planetary system (Correia+, 2010)
J/ApJS/182/97 : Radial velocities of multi-planet systems (Wittenmyer+, 2009)
J/A+A/479/271 : HD 196885 radial velocities (Correia+, 2008)
J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)
J/ApJ/634/625 : Radial velocities and photometry of GJ 876 (Rivera+, 2005)
J/ApJ/622/1102 : The planet-metallicity correlation. (Fischer+, 2005)
J/A+A/415/1153 : [Fe/H] for 98 extra-solar planet-host stars (Santos+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Star identifier (HD or GJ)
9- 10 I2 h RAh Hour of Right Ascension (J2000)
12- 13 I2 min RAm Minute of Right Ascension (J2000)
15- 19 F5.2 s RAs Second of Right Ascension (J2000)
21 A1 --- DE- Sign of the Declination (J2000)
22- 23 I2 deg DEd Degree of Declination (J2000)
25- 26 I2 arcmin DEm Arcminute of Declination (J2000)
28- 29 I2 arcsec DEs Arcsecond of Declination (J2000)
31- 35 F5.2 mag Vmag [3/11.2] Apparent V band magnitude
37- 41 F5.3 mag B-V [0.3/1.8] The (B-V) color index
43- 46 A4 --- SpT MK spectral type from Hipparcos,
Cat. I/239, or SIMBAD database
48- 51 I4 --- Nobs [3/2056] Number of observations
53- 59 F7.2 yr Time [0.01/25] Number of years star was observed
61- 65 F5.2 m/s <Err> [0.5/53]? Mean radial velocity error (1)
67- 74 F8.2 m/s rms [6/10064]? Radial velocity rms (1)
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Note (1): A blank indicates NaN.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Star identifier (HD or GJ)
9- 19 F11.5 d JD [36056/55848]? Julian Date of the observation
(JD-2400000) (1)
21- 29 F9.2 m/s RVel [-30741/7349]? Radial velocity (1)
31- 36 F6.2 m/s e_RVel [0.1/232]? Error in RVel (1)
38- 41 I4 --- SNR [8/1227] Signal-to-Noise Ratio
43- 44 I2 --- CCD [2/13] CCD Dewar used (2)
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Note (1): A blank indicates NaN.
Note (2): See http://mthamilton.ucolick.org/techdocs/detectors for the Dewar
specifications and section 3 for further explanations.
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History:
From electronic version of the journal
* 07-Feb-2014: Insert into VizieR
* 12-Feb-2014: In Table 1, "Time" for GJ 569A has been corrected and table 2
has been modified to add values for GJ 569a. (Files sent by the author)
* 26-Feb-2014: in table2, the JD was changed to a JD-2400000 (originally
JD-2440000, with a few negative dates)
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 27-Jan-2014