Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...399..919p&link_type=abstract
Astronomy and Astrophysics, v.399, p.919-929 (2003)
Astronomy and Astrophysics
Astrophysics
14
X-Ray: Stars, Stars: Activity, Open Clusters And Associations: Individual: Blanco 1
Scientific paper
We present X-ray Luminosity Distributions (XLDs) of late-type members (dF, dG, dK, dM) of the Blanco 1 cluster, based on ROSAT-HRI data and new astrometric-photometric membership obtained from the GSC-II project. For the first time we present the XLD of dM stars of this cluster. The high metallicity of Blanco 1 allows us to investigate the role of chemical composition on the coronal emission of late-type stars. Comparison between X-ray Luminosity Distributions of Blanco 1 and Pleiades, NGC 2516 and alpha Per suggests a possible metallicity effect in dM stars.
Favata Fabio
Micela Giuseppina
Pillitteri Ignazio
Sciortino Salvatore
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