ROSAT X-ray observations of a complete, volume-limited sample of late-type giants.

Details ROSAT X-ray observations of a complete, volume-limited sample of late-type giants. ROSAT X-ray observations of a complete, volume-limited sample of late-type giants.

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...310..801h&link_type=abstract

Astronomy and Astrophysics, v.310, p.801-812

Astronomy and Astrophysics

Astrophysics

51

Stars: Activity, Stars: Coronae, Stars: Late-Type, X-Rays: Stars

Scientific paper

We have investigated a complete sample of the nearest 39 late type giants (d<=25pc) for which we have probed the X-ray luminosity function with unprecedented sensitivity by deep (3...18ksec) ROSAT PSPC-observations in the pointed mode, together with ROSAT All-Sky survey (RASS) data. We confirm the X-ray dividing line for luminosity class III giants as proposed by Haisch et al. (1991, 1992) and we find evidence, that essentially all luminosity class III giants with B-V<1.2 or spectral type

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