[ CATS home ] [ Back to CATS list ]
[ ftp ]
1998ApJS..117..319Appenzeller+
J/ApJS/117/319 Northern RASS X-ray sources catalog (Appenzeller+ 1998)
================================================================================
Identification of a complete sample of northern ROSAT All-Sky Survey X-ray
sources. III. The catalog.
Appenzeller I., Thiering I., Zickgraf F.-J., Krautter J., Voges W.,
Chavarria C., Kneer R., Mujica R., Pakull M., Rosso C., Ruzicka F.,
Serrano A., Ziegler B.
=1998ApJS..117..319A
================================================================================
ADC_Keywords: Radio sources ; Photometry
Mission_Name: ROSAT
Keywords: galaxies: active - galaxies: clusters: general - surveys -
X-rays: galaxies - X-rays: general - X-rays: stars
Abstract:
We present a catalog of optical identifications of a representative
sample of northern ({delta})>-9{deg}) ROSAT All-Sky Survey (RASS)
sources. A full identification has been carried out for a count-rate-
and area-limited complete RASS subsample comprising 674 sources. All
sources are within six study areas outside the galactic plane
(|b|>19.6{deg}), one area being near the north Galactic pole and one
near the north ecliptic pole.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 151 674 Count-rate- and area-limited X-ray
complete subsample
table2.dat 151 70 Additional sources outside the count-rate- and
Area-limited subsample
notes.dat 80 452 Individual notes
--------------------------------------------------------------------------------
See also:
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1996)
VIII/14 : 87GB Catalog of radio sources (Gregory et al., 1991)
Byte-by-byte Description of file: table1.dat table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- Seq Internal designation for the X-ray sources
in the six study areas (1)
6- 16 A11 --- RXJ RXJ designation
18- 19 I2 h RAh X-source right ascension (2000)
21- 22 I2 min RAm X-source right ascension (2000)
24- 27 F4.1 s RAs X-source right ascension (2000)
29 A1 --- DE- X-source declination sign (2000)
30- 31 I2 deg DEd X-source declination (2000)
33- 34 I2 arcmin DEm X-source declination (2000)
36- 37 I2 arcsec DEs X-source declination (2000)
39- 44 F6.3 ct/s CRate Net X-ray source count rate (2)
46- 50 F5.3 ct/s e_CRate rms uncertainty on CountRate
52- 57 F6.2 --- HR1 Hardness ratio HR1 (3)
59- 63 F5.2 --- e_HR1 rms uncertainty on HR1
65- 69 F5.2 --- HR2 Hardness ratio HR2 (3)
71- 75 F5.2 -- e_HR2 rms uncertainty on HR2
77- 81 F5.1 10-13mW/m2 FX X-ray flux
83- 85 I3 arcsec DRA ? RA(X)-RA(O) (4)
87- 89 I3 arcsec DDE ? DE(X)-DE(O) (4)
91 I1 --- Q [1-4] Identification quality index (5)
93- 99 A7 --- Class Classification of the optical
counterpart (6)
101-107 A7 --- SpType Spectral type for stellar sources
109-113 F5.3 --- z ? Redshift for extragalactic sources
115-119 F5.2 mag Vmag ? V magnitude
121-125 F5.2 mag B-V ? B-V colour index
127-131 F5.2 --- XV ? XV index (log(f_X_/f_V_) (7)
133-136 I4 mJy F4.85GHz ? Radio flux at 4.85GHz (6cm) for sources
within 0{deg})
138-149 A12 ---- Name designation of the (main) optical
counterpart, if known (8)
151 A1 --- Rem [R] remark detailed in file notes.dat
--------------------------------------------------------------------------------
Note (1): The letters A through F refer to study areas I, II, III, IV, V and VI.
Note (2): Net X-ray source count rate as derived after superposition of all
ROSAT scan stripes and correction for vignetting and dead time.
Note (3): HR1=(B-A)/(B+A) and HR2=(D-C)/(D+C)
A: integrated counts in the energy range 0.11-0.41keV
B: integrated counts in the energy range 0.52-2.01keV.
C: integrated counts in the energy range 0.52-0.90keV.
D: integrated counts in the energy range 0.91-2.01keV.
Note (4): No values for extended objects (such as clusters), double stars and
other cases where no accurate position could be determined.
Note (5): 1: reliable identifications based on our own observations
2: reliable informations with a known object based on literature data
3: likely but uncertain identifications
4: case in which no plausible optical counterpart could be found
Note (6): For multiple (maximum 3) counterparts, the entries are listed in order
of likelihood or assumed relative contribution to the total X-ray
flux and are separated by a colon.
st: normal star (i.e., an unresolved objects showing a stellar
absorption spectrum, including late-type stars showing
chromospheric emission lines, such as dMe stars).
ES: (hot) emission-line star (unresolved objects showing a blue
continuum, with or without absorption lines, and unshifted
emission lines. Most objects classified ES show typical CV
spectra).
WD: white dwarf (star showing absorption lines with FWHM>1500km/s).
WDA: white dwarf with Balmer lines only.
S1: Seyfert 1 galaxy (galaxy with an unresolved nucleus showing a
Seyfert-type spectrum with broad (>2000km/s) permitted lines and
with M_B_>-23.5).
S15..S19: Seyfert galaxy of type 1.5-1.9
NL1: Narrow-line Seyfert 1 galaxy (spectrum showing line ratios
typical of Seyfert 1 but with lower FWHM of permitted lines).
S2: Seyfert 2 galaxy
LI: LINER
QSO: quasi-stellar object (unresolved or resolved object with
M_B_<-23.5 showing a Seyfert 1 spectrum).
BLL: BL Lac object
G: (single) galaxy
Gin: interacting galaxy pair
Gr: radio galaxy
GSB: starburst galaxy
C: cluster or group of galaxies
Note (7): Decadic logarithm of the ratio of the X-ray flux and the visual flux
Note (8): For stars, the entry numbers in the most common star catalogs are
listed. For other objects, the corresponding designations and
abbreviations listed in the NED and SIMBAD databases are given.
In a few cases of very long designations, the names have been
shortened or truncated. Since in all these cases coordinate
information is given in the table, this should not result in
ambiguities. The full designations can be obtained from the NED.
Although in the Remarks (Sect. 3, below) NRAO VLA Sky Survey (NVSS)
(Condon et al., 1998, Cat. ) data are quoted for some
sources, no NVSS designations are used since the final version of the
NVSS catalog is still listed as "in preparation."
--------------------------------------------------------------------------------
Byte-by-byte Description of file: notes.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- Seq Sequential number
6- 80 A75 --- Note Text of the note
--------------------------------------------------------------------------------
History: From ApJS electronic version
References:
Zickgraf et al., Paper I. 1998AN....319...42Z
Zickgraf et al., Paper II. 1997A&AS..123..103Z
Zickgraf et al., Paper V. 1997A&A...323L..21Z
Zickgraf et al., Paper VI. 1998A&A...339..457Z
================================================================================
(End) James Marcout, Patricia Bauer [CDS] 24-Sep-1998