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J/A+A/540/A82  CaIIHK emission in stars with close-in planets  (Krejcova+, 2012)

Evidence for enhanced chromospheric Ca II H and K emission in stars with close-in extrasolar planets. Krejcova T., Budaj J. <Astron. Astrophys., 540, A82 (2012)> =2012A&A...540A..82K
ADC_Keywords: Stars, double and multiple ; Planets ; Equivalent widths Keywords: planets and satellites: general - planets and satellites: magnetic fields - planet-star interactions - stars: chromospheres - stars: magnetic field - planetary systems Abstract: The planet-star interaction is manifested in many ways. It has been found that a close-in exoplanet causes small but measurable variability in the cores of a few lines in the spectra of several stars, which corresponds to the orbital period of the exoplanet. Stars with and without exoplanets may have different properties. The main goal of our study is to search for the influence that exoplanets might have on atmospheres of their host stars. Unlike the previous studies, we do not study changes in the spectrum of a host star or differences between stars with and without exoplanets. We aim to study a large number of stars with exoplanets and the current level of their chromospheric activity and to look for a possible correlation with the exoplanetary properties. Description: To analyse the chromospheric activity of stars, we exploited our own and publicly available archival spectra, measured the equivalent widths of the cores of Ca II H and K lines, and used them to trace their activity. Subsequently, we searched for their dependence on the orbital parameters and the mass of the exoplanet. Stellar spectra used in our analysis originate from two different sources. The main source is the publicly available Keck HIRES spectrograph archive. These spectra have a typical resolution of up to 85000. We carefully selected only those spectra with the signal-to-noise ratio high enough to measure the precise EQW of Ca II K emission. These data were accompanied by our own observations of several stars (HD 179949, HD 212301, HD 149143, and Wasp-18) with a close-in exoplanet. We obtained these data with the FEROS spectrograph mounted on the 2.2m ESO/MPG telescope (night 18/19.9.2010). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 83 210 Parameters of exoplanetary systems
See also: J/MNRAS/414/108 : Calibrator of exoplanet-host stars (Beust+, 2011) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Object Planet name 14 A1 --- --- [/] 15- 24 A10 --- OName Other planet name 28- 34 F7.4 Mjup Mpsini Planet mass (Mp*sini) 37- 49 F13.8 d Porb Orbital period 53- 60 F8.6 AU a Planet distance to the star 62- 65 I4 K Teff Effective temperature of star 67- 73 F7.4 0.1nm EWCaIIK ?=- CaII K equivalent width 75- 80 F6.3 [-] logR'HK ?=- Activity index 82- 83 A2 --- Det [T RV] Detection method: transit (T) or radial velocity (RV)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 18-Jun-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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