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J/A+A/483/903   Mount Wilson index for main sequence F-K stars  (Buccino+, 2008)

Mg II lines as stellar activity indicators of main sequence F-K stars. Buccino A.P., Mauas P.J.D. <Astron. Astrophys. 483, 903 (2008)> =2008A&A...483..903B
ADC_Keywords: Stars, dwarfs ; Stars, late-type ; Spectra, ultraviolet Keywords: standards - line: profiles - astronomical data bases: miscellaneous - instrumentation: spectrographs - stars: activity - ultraviolet: stars Abstract: The largest dataset of stellar activity measurements available at present is the one obtained at the Mount Wilson Observatory, where high-precision CaII H+K fluxes have been measured from 1966 for about 2200 stars. Since the MgII H and K lines at λ2800Å are formed in a similar way to the CaII H+K emission lines, they are also good indicators of chromospheric structure. The International Ultraviolet Explorer (IUE) provides a large database of UV spectra in the band 1150-3350Å from 1978 to 1995, which can also be used to study stellar activity. The main purpose of this study is to use the IUE spectra in the analysis of magnetic activity of main sequence F-K stars. Combining IUE observations of MgII and optical spectroscopy of CaII, the registry of activity of stars can be extended in time. Description: The Mount Wilson index derived from all the high resolution spectra of F, G and K main sequence stars observed by the IUE satellite. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 67 1624 Mount Wilson chromospheric activity indices (on 260 different stars)
See also: VI/110 : Final Merged Log of IUE Observations (NASA-ESA, 2000) I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) J/A+A/469/309 : Chromospheric activity in late-type stars (Cincunegui+, 2007) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD star number 8- 12 F5.2 mag Vmag Visual magnitude (1) 14- 18 F5.3 mag B-V B-V color index (1) 20- 25 F6.2 mas Plx Parallax (1) 27- 37 F11.3 d JD Julian date of observation 39- 45 F7.2 yr Obs Year of observation 47- 51 F5.3 --- S Mount Wilson activity index 53- 58 F6.4 --- e_S Mount Wilson activity index standard deviation 60- 67 A8 --- IUEsp IUE spectrum
Note (1): Quantities obtained from Hipparcos and Tycho catalogue (Cat. I/239)
Acknowledgements: Andrea Buccino, abuccino(at)iafe.uba.ar
(End) Patricia Vannier [CDS] 01-Apr-2008
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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