Published February 1988 | Version v1
Journal article Metadata-only

Einstein Observatory survey of stars in the Hyades cluster region

Creators

  • 1. Lockheed Research Laboratories, Palo Alto, CA (USA)
  • 2. Max-Planck-Institut fuer extraterrestrische Physik, Garching (Germany, F.R.)
  • 3. Osservatorio Astronomico, Palermo (Italy)

Description

The paper reports the results of an extensive X-ray study of the Hyades region and improves on previous studies by using refined X-ray source detection algorithms and the complete set of Einstein Observatory IPC exposures covering the Hyades cluster region (a total of 63 1 x 1 deg images). Maximum likelihood integral X-ray luminosity functions were computed for the Hyades stars for given color index (B-V) ranges. The present results agree substantially with a previous survey about the ubiquity of the stellar activity in the Hyades cluster, especially among solar-type stars. The result of Stern et al. (1981) that stellar X-ray emission is dependent on stellar age is confrimed. 92 references

Additional details

Publishing Information

Journal Title
Astrophys. J.
Journal Volume
325
Series
Astrophys. J.
Journal Page Range
798-819
ISSN
0004-637X
CODEN
ASJOA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
19080787
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
AGE ESTIMATION; ALGORITHMS; COSMIC X-RAY SOURCES; LUMINOSITY; MAXIMUM-LIKELIHOOD FIT; STAR CLUSTERS; STELLAR ACTIVITY; X RADIATION
Descriptors DEC
COSMIC RAY SOURCES; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; NUMERICAL SOLUTION; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS