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J/A+A/537/A147      Optimizing exoplanet transit searches    (Herrero+, 2012)

Optimizing exoplanet transit searches around low-mass stars with inclination constraints. Herrero E., Ribas I., Jordi C., Guinan E.F., Scott S.G. <Astron. Astrophys. 537, A147 (2012)> =2012A&A...537A.147H
ADC_Keywords: Stars, double and multiple ; Planets ; Rotational velocities ; Spectroscopy Keywords: stars: activity - planets and satellites: detection - stars: rotation Abstract: We investigate a method to increase the efficiency of a targeted exoplanet search with the transit technique by preselecting a subset of candidates from large catalogs of stars. Assuming spin-orbit alignment, this can be achieved by considering stars that have a higher probability to be oriented nearly equator-on (inclination close to 90°). Description: The table is a compilation of several catalogs of stars containing log(R'HK), vsin(i) and (B-V) data. The statistical analysis described in the paper was performed to obtain the probability for each star to have an axis inclination above 80°, given by the parameters epsilon and P. The number of stars contained in the statistics box, described by the uncertainties in the defined parameters, is also indicated. The resulting probabilities can be used to constrain the sample and compile a catalog for high efficiency transit searches. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 104 1198 Catalog compilation with analysis results
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 16 A16 --- Name Star name 18- 24 F7.3 km/s vsini Projected rotation velocity, vsin(i) 26- 32 F7.3 km/s e_vsini Error in projected rotation velocity 36- 40 F5.3 --- B-V B-V color index 44- 48 F5.3 --- e_B-V Error in B-V color index 51- 56 F6.3 [-] log(R'HK) Activity index, log(R'HK) 60- 64 F5.3 [-] e_log(R'HK) Error in activity index log(R'HK) 68- 71 F4.2 --- eps epsilon parameter (1) 74- 79 I6 --- Nstar Number of stars in the statistics box 82- 85 F4.2 --- Prob P parameter (2) 91-104 A14 --- Ref References (3)
Note (1): Calculated probability for the star to have i>80°. Note (2): Normalized probability (P=1 or ε=0.17 for a non-preselected sample) Note (3): References as follows: Dc91 = Duncan et al. 1991, Cat. III/159 Gb03 = Glebocki & Gnacinski 2003, Cat. III/244 Gy06 = Gray et al. 2006, Cat. J/AJ/132/161 Hr96 = Henry et al. 1996, Cat. J/AJ/111/439 Jk11 = Jenkins et al. 2011, Cat. J/A+A/531/A8 Kh09 = Kharchenko & Roeser 2009, Cat. I/280 Lp10 = Lopez-Santiago et al. 2010, Cat. J/A+A/514/A97 Wr04 = Wright et al. 2004, Cat. J/ApJS/152/261
Acknowledgements: Enrique Herrero, eherrero(at)ice.cat
(End) Enrique Herrero [ICE (CSIC-IEEC)], Patricia Vannier [CDS] 10-Nov-2011
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