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1998ApJS..117..319Appenzeller+

J/ApJS/117/319      Northern RASS X-ray sources catalog     (Appenzeller+ 1998)
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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
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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:
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  FileName      Lrecl  Records   Explanations
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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
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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
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   Bytes Format Units      Label     Explanations
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   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
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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."
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Byte-by-byte Description of file: notes.dat
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   Bytes Format Units   Label     Explanations
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   1-  4  A4    ---     Seq       Sequential number
   6- 80  A75   ---     Note      Text of the note
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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
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(End)                           James Marcout, Patricia Bauer [CDS]  24-Sep-1998