2004/01/01 by I. Pillitteri, G. Micela, S. Sciortino +3
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:20035869
published as Astron.Astrophys.421:175-186,2004 · 18 pages, 8 figures, paper accepted for publication on A&A
openalex publication_date 2004/01/01 · arxiv created 2004/03/12 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/06/11
We present an X-ray study of the high metallicity young open cluster Blanco 1 based on XMM-Newton data. X-ray spectroscopy of cluster members is presented for the first time as well as new X-ray distribution functions of late-type stars. We detected all known dF and dG stars in the EPIC field and 80% and 90% of dK and dM stars, respectively. The X-ray spectral analysis of the X-ray brightest cluster stars and X-ray color analysis of a larger sample show that a model with two temperatures (at about 0.3 and 1 keV) explains the quiescent activity phase spectra. We discuss also the nature of unidentified X-ray sources in the observed region and their X-ray spectral properties.