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J/A+AS/122/201 ROSAT Galactic Plane Survey observations (Motch+ 1997)
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The ROSAT Galactic Plane Survey: analysis of a low latitude sample area in
Cygnus. The observations
Motch C., Guillout P., Haberl F., Pakull M.W., Pietsch W., Reinsch K.
<Astron. Astrophys. Suppl. Ser. 122, 201 (1997)>
=1997A&AS..122..201M (SIMBAD/NED BibCode)
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ADC_Keywords: Radio sources
Keywords: X-ray: general - X-ray: stars - stars: activity - stars: neutron -
stars: statistics
Mission_Name: ROSAT
Abstract:
The analysis of the part of the ROSAT all-sky survey covering the
galactic plane is the scope of a dedicated project called the ROSAT
Galactic Plane Survey. In order to statistically understand the nature
of the =~14000 sources discovered by ROSAT at |b|<=20{deg}, a number
of sample areas have been chosen for follow-up optical identification.
In this paper we present the X-ray and optical material gathered in a
region located in the Cygnus constellation, centered at l=90{deg},
b=0{deg} and covering an area of 64.5deg^2^. A total of 95 and 128
sources are detected with a maximum likelihood larger than 10 and 8
respectively. With a typical survey exposure time of the order of 700
to 900 s the flux completeness level is =~0.02cts/s corresponding to
=~2x10^-13^erg/cm^2^/s. The position of the sample area allows to
investigate the soft X-ray content of a rather typical region of the
galactic plane. In this paper we describe the details of the
observational procedures and data reduction. For each ROSAT source we
list the main X-ray characteristics together with those of the
proposed optical identification. When appropriate, we also show
optical spectra and finding charts. The full analysis and discussion
of these data are presented in a companion paper (Motch et al.
1997, Cat. <J/A+A/318/111>).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 90 128 X-ray characteristics of ROSAT survey sources
detected with ML>=8 in the Cygnus test region
table3 90 30 X-ray characteristics of ROSAT survey sources
detected with 7<=ML<8 in the Cygnus test region
table4 99 128 Optical properties of all proposed optical
counterparts in the Cygnus test region for
sources with ML>= 8
table5 92 30 Optical properties of all proposed optical
counterparts in the Cygnus test region for
sources with 7<=ML< 8.
table6 758 30 Notes on individual sources
tables.tex 120 504 LaTeX version of the tables
supertabular.sty 75 311 LaTex style
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See also:
J/A+A/318/111: The ROSAT Galactic Plane Survey (Motch+ 1997)
Byte-by-byte Description of file: table2 table3
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Bytes Format Units Label Explanations
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1- 3 I3 --- Source Source index
5- 19 A15 --- ROSAT ROSAT name
21- 22 I2 h RAh X-ray right ascension (J2000)
24- 25 I2 min RAm X-ray right ascension (J2000)
27- 31 F5.2 s RAs X-ray right ascension (J2000)
33- 34 I2 deg DEd X-ray declination (J2000)
36- 37 I2 arcmin DEm X-ray declination (J2000)
39- 42 F4.1 arcsec DEs X-ray declination (J2000)
44- 47 F4.1 arcsec r90 90% confidence radius
49- 53 F5.3 ct/s Count Count rate
55- 59 F5.3 ct/s e_Count rms uncertainty on Count
61- 66 F6.1 --- MaxLik Maximum likehood
68- 72 F5.2 --- HR1 ? Hardness ratio 1
75- 78 F4.2 --- e_HR1 ? rms uncertainty on HR1
80- 84 F5.2 --- HR2 ? Hardness ratio 2
87- 90 F4.2 --- e_HR2 ? rms uncertainty on HR2
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Byte-by-byte Description of file: table4 table5
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Bytes Format Units Label Explanations
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1- 3 I3 --- Source Source index
5- 19 A15 --- ROSAT ROSAT name
21- 23 A3 --- Class Class of the proposed optical counterpart
24 A1 --- u_Class [?] ? for the more uncertain cases (1)
26- 44 A19 --- IdOpt Optical identification (1)
45 A1 --- u_IdOpt [?] ? for the more uncertain cases (1)
46- 51 A6 --- SpType Spectral type
54- 58 F5.2 mag Vmag ? V magnitude
60- 64 F5.2 mag B-V ? B-V colour index
66- 67 I2 h RAh ? Optical right ascension (J2000)
69- 70 I2 min RAm ? Optical right ascension (J2000)
72- 76 F5.2 s RAs ? Optical right ascension (J2000)
77 A1 --- n_RA [n] n: Right ascension not available
78- 79 I2 deg DEd ? Optical declination (J2000)
81- 82 I2 arcmin DEm ? Optical declination (J2000)
84- 87 F4.1 arcsec DEs ? Optical declination (J2000)
88 A1 --- n_DE [n] n: Declination not available
89- 92 F4.2 --- Dist ? Distance between X-ray and optical position
in units of 90% confidence radius
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Note (1): Proposed counterparts having a probability of identification in the
range 95% - 98%, These more uncertain cases are marked by a '?' in
the u_IdOpt column and in the u_Class column
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Byte-by-byte Description of file: table6
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Bytes Format Units Label Explanations
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1- 3 I3 --- Source Source index
5- 19 A15 --- ROSAT ROSAT name
21-758 A738 --- Com Comments
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Acknowledgements: Christian Motch <motch@cdsxb7.u-strasbg.fr>
References:
Platais I., 1994BICDS..44....9P = Cat. <I/203>
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(End) Patricia Bauer [CDS] 12-Aug-1996