J/A+A/552/A27 Stellar activity and kinematics of FGK stars (Murgas+, 2013)
Stellar activity as a tracer of moving groups.
Murgas F., Jenkins J.S., Rojo P., Jones H.R.A, Pinfield D.J.
<Astron. Astrophys. 552, A27 (2013)>
=2013A&A...552A..27M 2013A&A...552A..27M
ADC_Keywords: Stars, nearby ; Stars, late-type ; Space velocities
Keywords: stars: activity - stars: kinematics and dynamics - stars: solar-type -
solar neighborhood
Abstract:
We present the results of a study of the stellar activity in the solar
neighborhood using complete kinematics (galactocentric velocities
U,V,W) and the chromospheric activity index log RHK. We analyzed the
average activity level near the centers of known moving groups using a
sample of 2529 stars and found that the stars near these associations
tend to be more active than field stars. This supports the hypothesis
that these structures, or at least the dominant fraction of them, are
composed of kinematically bound, young stars. We confirmed our results
by using Galaxy Evolution Explorer (GALEX) UV data and kinematics
taken from the Geneva-Copenhagen Survey for the stars in the sample.
Finally, we present a compiled catalog with kinematics and activities
for 2529 stars and a list of potential moving group members selected
based on their stellar activity level.
Description:
We present a compilation of stellar activity catalogs combined with
galactic velocity information of 2529 F, G, and K stars. The stellar
activity catalogs use in this work are: Jenkins et al. 2011 (Cat.
J/A+A/531/A8); Gray et al. 2003 (Cat. J/AJ/126/2048), 2006 (Cat.
J/AJ/132/161); Henry et al 1996 (Cat. J/A+A/111/439); Wright et al.
2004 (Cat. J/ApJS/152/261); Duncan et al. (1991ApJS...76..383D 1991ApJS...76..383D, Cat.
III/159). The galactic velocities are taken from the Jenkins et al.
2011 (Cat. J/A+A/531/A8) and the Geneva-Copenhaguen Survey (GCS)
Nordstrom et al. (2004A&A...418..989N 2004A&A...418..989N, Cat. V/117).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 42 2529 Stellar activity and kinematics for 2529 F, G
and K stars
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See also:
V/130 : Geneva-Copenhagen Survey of Solar neighbourhood III
(Holmberg+, 2009)
J/AJ/111/439 : Chromospheric emission in late-type stars. (Henry+ 1996)
J/AJ/126/2048 : NStars project: the Northern Sample. I. (Gray+, 2003)
J/ApJS/152/261 : Chromospheric Ca II emission in nearby stars (Wright+, 2004)
J/AJ/132/161 : NStars project: The southern sample. I. (Gray+, 2006)
J/A+A/530/A138 : Geneva-Copenhagen survey re-analysis (Casagrande+, 2011)
J/A+A/531/A8 : Activity indexes and velocities for 890 stars (Jenkins+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name (HD or HIP)
12- 18 F7.2 km/s Uvel Galactrocentric velocity U
20- 26 F7.2 km/s Vvel Galactrocentric velocity V
28- 33 F6.2 km/s Wvel Galactrocentric velocity W
35- 40 F6.3 --- logRhk Stellar activity HK index
42 I1 --- r_logRhk Source of logRhk (1)
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Note (1): Stellar activity source as follows:
1 = Jenkins et al., 2011, Cat. J/A+A/531/A8
2 = Gray et al., 2003, Cat. J/AJ/126/2048, 2006, Cat. J/AJ/132/161
3 = Henry et al., 1996, Cat. J/AJ/111/439
4 = Wright et al., 2004, Cat. J/ApJS/152/261
5 = Duncan et al., 1991ApJS...76..383D 1991ApJS...76..383D, Cat. III/159
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Acknowledgements:
Felipe Murgas, murgas(at)iac.es
(End) Felipe Murgas [IAC, Spain] 21-Feb-2013