J/A+AS/128/331 X-ray Sources in Molecular Clouds (Danner 1998)
Searching for Old Neutron Stars with ROSAT:
I. Soft X-ray Sources in Molecular Clouds at High Galactic Latitude.
Danner R.
<Astron. Astrophys. Suppl. Ser. 128, 331 (1998)>
=1998A&AS..128..331D 1998A&AS..128..331D (SIMBAD/NED BibCode)
ADC_Keywords: X-ray sources
Mission_Name: ROSAT
Keywords: surveys - stars: neutron; white dwarfs - X-rays: stars -
radio continuum: stars
Description:
Figure 9: Finding charts for the objects where spectra were taken,
based on the APM data base. The cross is centered at the X-ray
position. 30 arcsec radius error circles are shown and arrows mark the
objects with the available spectra. North is up and East to the left
in all charts.
Figure 10: Deep CCD images of the X-ray source fields with faint
optical counterparts. Circles with 30 arcsec radius are centered on
the X-ray position. Capital letters identify the brightest object next
to them (see Table 3 for remarks on identification). The filter used
and the exposure time are shown above each image in brackets.
See also:
J/A+A/316/147 : Catalogue of ROSAT White Dwarfs (Fleming+ 1996)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 102 89 Summary of the identification program of all
89 sources found within the lowest contours
of the MBM cloud maps
table2.tex 153 137 LaTeX version of table2
fig9a.ps 80 845 Finding charts
fig9b.ps 80 997 Finding charts
fig9c.ps 80 876 Finding charts
fig9d.ps 80 848 Finding charts
fig9e.ps 80 944 Finding charts
fig9f.ps 80 906 Finding charts
fig10a.ps 72 12627 Deep CCD images
fig10b.ps 72 12627 Deep CCD images
fig10c.ps 72 12627 Deep CCD images
fig10d.ps 72 12627 Deep CCD images
fig10e.ps 72 12627 Deep CCD images
fig10f.ps 72 12627 Deep CCD images
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- ID Internal reference number
4- 5 I2 h RAh X-ray right ascension (J2000.0)
7- 8 I2 min RAm X-ray right ascension (J2000.0)
10- 13 F4.1 s RAs X-ray right ascension (J2000.0)
15 A1 --- DE- Declination sign
16- 17 I2 deg DEd X-ray declination (J2000.0)
19- 20 I2 arcmin DEm X-ray declination (J2000.0)
22- 23 I2 arcsec DEs X-ray declination (J2000.0)
25- 29 F5.3 ct/s Rate Source count rate
31- 35 F5.3 ct/s e_Rate Error in count rate
37- 41 F5.2 --- HR1 ? Hardness ratio HR1 (1)
43- 47 F5.2 --- HR2 ? Hardness ratio HR2 (1)
49- 63 A15 --- Name Catalog name of object
64 A1 --- n_Name [*+ab] Note on Name (2)
66- 73 A8 --- SpType Spectral Type
76 A1 --- BandP [OVJ] Band of the magnitude mvis
77- 81 F5.2 mag mvis ? Visual magnitude of counterpart
83 A1 --- l_O-E Limit flag on O-E
84- 88 F5.2 mag O-E ? O-E color index from APM scans
90- 93 F4.1 arcsec Dist ? Separation between X-ray source and
proposed counterpart
95- 96 A2 --- Band Bands in which the source has been observed
at the VLA
98 A1 --- l_log(FX/Fopt) Limit flag on log(FX/Fopt)
99-102 F4.1 --- log(FX/Fopt) ? Logarithm of X-ray to optical flux ratio
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Note (1): When blank, source was not detected when data were split into
two spectral channels
Note (2): *: new Identification
+: new classification
a: not detected in snapshot
b: in visual binary with M4V
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Acknowledgements: Rudolf Danner
References:
Danner, Paper II. 1998A&AS..128..349D 1998A&AS..128..349D
(End) Patricia Bauer [CDS] 20-Aug-1997