J/ApJ/680/728 Diameters of exoplanet host stars (Baines+, 2008)
CHARA array measurements of the angular diameters of exoplanet host stars.
Baines E.K., Mcalister H.A., Ten Brummelaar T.A., Turner N.H., Sturmann J.,
Sturmann L., Goldfinger P.J., Ridgway S.T.
<Astrophys. J., 680, 728-733 (2008)>
=2008ApJ...680..728B 2008ApJ...680..728B
ADC_Keywords: Planets ; Interferometry ; Infrared sources ;
Stars, double and multiple
Keywords: infrared: stars - planetary systems - stars: fundamental parameters -
techniques: interferometric
Abstract:
We have measured the angular diameters for a sample of 24
exoplanet host stars using Georgia State University's CHARA Array
interferometer. We use these improved angular diameters together with
Hipparcos parallax measurements to derive linear radii and to estimate
the stars' evolutionary states.
Description:
We obtained data on 24 exoplanet (stars needed to be brighter than
V=+10 in order for the tip/tilt subsystem to lock onto the star, and
brighter than K=+6.5 so that fringes were easily visible) over
multiple observing runs spanning 2004 January to 2007 September (see
Table 1). The stars were observed using the Center for High Angular
Resolution Astronomy (CHARA) Array, a six-element Y-shaped
interferometric array located on Mount Wilson, California.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 47 53 Observing log
table3.dat 44 268 Exoplanet host stars' calibrated visibilities
table5.dat 104 24 Exoplanet host star angular diameter measurements
refs.dat 46 23 References for table 5
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See also:
J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)
J/ApJ/649/1010 : Habitability of known exoplanetary systems (Jones+, 2006)
J/ApJ/622/1102 : The planet-metallicity correlation. (Fischer+, 2005)
J/A+A/415/391 : The CORALIE survey for extrasolar planets. XII (Mayor+, 2004)
J/A+A/415/1153 : [Fe/H] for 98 extra-solar planet-host stars (Santos+, 2004)
J/A+A/410/1039 : Northern extra-solar planets ELODIE survey I (Perrier+, 2003)
J/A+A/410/1051 : ELODIE survey for northern extra-solar planets. II. (Naef+,
2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD Target name
8- 16 A9 --- OName Other name
18- 23 I6 --- Calib Calibrator HD
25- 29 A5 --- BaseL Baseline
31- 33 I3 m Lgth Length of baseline
35- 44 A10 "YYYY/MM/DD" ObsDate Date of observation (UT)
46- 47 I2 --- Nobs Number of observations
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HD]
4- 9 I6 --- HD Target name
11- 19 F9.3 d MJD Modified Julian Date
21- 26 F6.2 m B Baseline (length)
28- 32 F5.1 deg PA ? Position angle; East of North
34- 38 F5.3 --- Vc Calibrated visibility
40- 44 F5.3 --- e_Vc The 1σ error in Vc
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD Target name
8- 13 A6 --- SpType MK spectral type
14 A1 --- r_SpType Spectral type reference ; see refs.dat file
16- 19 I4 K Teff Effective temperature
20 A1 --- r_Teff [a-d] Teff and logg reference (1)
22- 25 F4.2 [cm/s2] logg Logarithm of gravity
27- 30 F4.2 --- muL Linear limb-darkening coefficient
µλ from Claret et al.
(1995A&AS..114..247C 1995A&AS..114..247C)
32- 36 F5.2 mas plx Hipparcos parallax from van Leeuwen (2007,
Cat. I/311)
38- 41 F4.2 mas e_plx plx uncertainty
43- 47 F5.3 mas the.SED SED diameter estimated from SED fit
49- 53 F5.3 mas e_the.SED θSED uncertainty
55- 59 F5.3 mas the.UD Apparent UD (Uniform Disk) angular diameter
of the star
61- 65 F5.3 mas e_the.UD θUD uncertainty
67- 71 F5.3 mas the.LD LD (Limb-Darkened) diameter
73- 77 F5.3 mas e_the.LD θLD uncertainty
79- 80 I2 % sigLD The limb-darkened relationship error
82- 87 F6.3 solRad Rlin Linear radius for the star
89- 94 F6.3 solRad e_Rlin Rlin uncertainty
96- 97 I2 % sigR Radius measurement error
99 A1 --- u_Rst [~] Approximative flag on Rst
100-104 F5.2 solRad Rst Radius expected from the spectral type
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Note (1): All Teff and logg are from Santos et al. (2004, Cat. J/A+A/415/1153)
unless flag; see refs.dat file
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1 A1 --- Ref Reference flag
3- 21 A19 --- BibCode Bibcode
23- 46 A24 --- Aut Author's name
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 14-Oct-2010