J/A+A/399/919 X-ray Luminosities in Blanco 1 (Pillitteri+, 2003)
The X-ray Luminosity Distributions of the high-metallicity
open cluster Blanco 1.
Pillitteri I., Micela G., Sciortino S., Favata F.
<Astron. Astrophys. 399, 919 (2003)>
=2003A&A...399..919P 2003A&A...399..919P
ADC_Keywords: Clusters, open ; X-ray sources
Keywords: X-ray: stars - stars: activity -
open clusters and associations: individual: Blanco 1
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 α Per suggests a possible metallicity
effect in dM stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 67 93 Optical, infrared and X-ray band properties of
Blanco 1 members in the combined fields of view
of the two ROSAT-HRI observations.
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See also:
J/A+AS/121/213 : BV photometry of Blanco 1 stars (Panagi+, 1997)
J/A+A/421/175 : XMM sources in Blanco 1 (Pillitteri+, 2004)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Name of identified sources (1)
7 I1 h RAh Right ascension (J2000) (2)
9- 10 I2 min RAm Right ascension (J2000) (2)
12- 15 F4.1 s RAs Right ascension (J2000) (2)
17 A1 --- DE- Declination sign (J2000) (2)
18- 19 I2 deg DEd Declination (J2000) (2)
21- 22 I2 arcmin DEm Declination (J2000) (2)
24- 27 F4.1 arcsec DEs Declination (J2000) (2)
30- 33 F4.2 % Prob Astrometric membership probability
35- 38 F4.2 mag B-V B-V colour index
40- 43 F4.2 mag J-H ? J-H colour index
45- 48 F4.2 mag H-K ? H-K colour index
50- 53 I4 K Teff ? Effective temperature
55- 58 F4.2 solMass Mass ? Stellar mass
60- 61 A2 --- l_logLX [≤ ] Limit flag on logLX
62- 66 F5.2 [10-7W] logLX ? X-ray luminosity
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Note (1): Identifiers in the first column are from Epstein & Epstein
(1968AJ.....73..556E 1968AJ.....73..556E) (prefix ZS, Cl* Blanco 1 ZS NNN in Simbad)
or from Paper I (Micela et al., 1999A&A...344...83M 1999A&A...344...83M) Table 4
(prefix BLX, BlX NN in Simbad).
Some sources have no identifier.
Note (2): Positions are taken from GSC-II catalog (Cat. I/271).
All objects are identified as [PMS2003] JHHMMSS.s+DDMMSS.s in Simbad
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History:
From electronic version of the journal
References:
Micela et al., Paper I 1999A&A...344...83M 1999A&A...344...83M
(End) Patricia Bauer [CDS] 16-Jun-2003