Stellar activity as a tracer of moving groups

Bibcode
2013A&A...552A..27M
DOI
10.1051/0004-6361/201219483
Pinfield, D. J.; Jones, H. R. A.; Rojo, P.; Jenkins, J. S.; Murgas, F.
Bibliographical reference

Astronomy and Astrophysics, Volume 552, id.A27, 8 pp.

Advertised on:
4
2013
Journal
Astronomy and Astrophysics
Number of authors
5
IAC number of authors
1
Citations
29
Refereed citations
25
Description
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 R'HK. 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 a significant part 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. Table 4 is available in electronic form at http://www.aanda.orgFull Table 1 is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/552/A27
Related projects
Projects' name image
Exoplanets and Astrobiology

The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable

Enric
Pallé Bago
In progress
Type
Refereed
Solar neighborhood
Exoplanetary Systems & Solar System (SEYSS)

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