EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 399/3 Article
Free access article

Issue A&A
Volume 399, Number 3, March I 2003
Page(s) 919 - 929
Section Stellar clusters and associations
DOI http://dx.doi.org/10.1051/0004-6361:20021818



A&A 399, 919-929 (2003)
DOI: 10.1051/0004-6361:20021818

The X-ray Luminosity Distributions of the high-metallicity open cluster Blanco 1

I. Pillitteri1, G. Micela2, S. Sciortino2 and F. Favata3

1  Dipartimento di Scienze Fisiche e Astronomiche, Sezione di Astronomia, Università di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy
    e-mail: pilli@astropa.unipa.it
2  INAF - Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy
    e-mail: giusi@astropa.unipa.it, sciorti@astropa.unipa.it
3  Astrophysics Division, Research & Scientific Support Department of ESA, ESTEC, Postbus 299, 2200 AG Noordwijk, The Netherlands
    e-mail: fabio.favata@rssd.esa.int

(Received 22 October 2001 / Accepted 10 October 2002 )

Abstract
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.


Key words: X-ray: stars -- stars: activity -- open clusters and associations: individual: Blanco 1

Offprint request: I. Pillitteri, pilli@astropa.unipa.it

SIMBAD Objects



© ESO 2003


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.