CDROM/APJS/V111/P163    Einstein X-Ray Survey Galaxies. I.
================================================================================
An Einstein X-Ray Survey of Optically Selected Galaxies. I. Data
       David Burstein, C. Jones, W. Forman, A. P. Marston, and Ronald O. Marzke
       <ApJS 1997, 111, 163>
       =1997ApJS..111..163B
================================================================================

Abstract:
     We present the results of a complete Einstein imaging proportional
  counter X-ray survey of optically-selected galaxies from the
  Shapley-Ames Catalog, the Uppsala General Catalog and the European
  Southern Observatory Catalog.  Well-defined optical criteria are used
  to select the galaxies, and X-ray fluxes are measured at the
  optically-defined positions. The result is a comprehensive list of
  X-ray detection and upper limit measurements for 1018 galaxies.  Of
  these, 827 have either independent distance estimates or radial
  velocities.  Associated optical, redshift, and distance data have been
  assembled for these galaxies, and their distances come from a
  combination of directly predicted distances and those predicted from
  the Faber-Burstein Great Attractor/Virgocentric infall model.
     The accuracy of the X-ray fluxes has been checked in three
  different ways; all are consistent with the derived X-ray fluxes being
  of <=0.1 dex accuracy.  In particular, there is agreement with
  previously published X-ray fluxes for galaxies in common with a 1991
  study by Roberts et al. and a 1992 study by Fabbiano et al.  The data
  presented here will be used in further studies to characterize the
  X-ray output of galaxies of various morphological types and thus to
  enable the determination of the major sources contributing to the
  X-ray emission from galaxies.

Keywords: catalogs -- galaxies: distances and redshifts -- surveys --
  X-rays: galaxies

Description:
  The Einstein X-Ray Survey data consist of 3 separate kinds of files
  for each of our three data subsets:
  Tables 5-7:  These tables give the basic observed data for the galaxies
               for which the authors were able to obtain X-ray data, both
               detections and upper limits.  Included are both observed
               X-ray data and correlated optical data.
  Tables 9-11: These tables list the galaxies that were included in the
               search of the IPC images, but for which X-ray fluxes were
               not measured.  A code explains why no measurement was made.
  Tables 12-14: These tables list the distance-dependent parameters,
               including predicted distance, method of predicted distance,
               X-ray luminosities or upper limits, absolute B optical
               diameters and absolute B magnitudes.


File Summary:
--------------------------------------------------------------------------------
File Name    Lrecl    Records   Explanations
--------------------------------------------------------------------------------
table5.dat      89        313   Properties of Shapley-Ames galaxies with X-ray
                                observations
table6.dat      89        393   Properties of UGC galaxies with X-ray
                                observations
table7.dat      94        312   Properties of ESO galaxies with X-ray
                                observations
table9.dat      19         91   Shapley-Ames galaxies without X-ray observations
table10.dat     19        277   UGC galaxies without X-ray observations
table11.dat     23        373   ESO galaxies without X-ray observations
table12.dat     50        313   Derived properties of X-ray observed
                                Shapley-Ames galaxies
table13.dat     50        329   Derived properties of X-ray observed UGC
                                galaxies
table14.dat     54        180   Derived properties of X-ray observed ESO
                                galaxies
--------------------------------------------------------------------------------

Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
   Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1-10   A10    ---      Name      *Name given in the RC2
  11-15   F5.2   mag      B_T       *B mag as given in the RC2
  16-18   3X     ---      ---        Blank
  19-22   F4.2  0.1arcmin Log_D     *Log B diameter
  23-24   2X     ---      ---        Blank
  25-26   I2     ---      Gal_Type  *Morphological Type Code, RC2
  27-32   I6     ---      IPC_fld   *IPC Field Number (-1 if more than one)
  33-39   I7     s        Exp_time  *Total exposure time for IPC field(s)
  40-41   2X     ---      ---        Blank
  42-43   I2     hr       RAh        Right Ascension 1950 RC2
  44-49   F6.2   min      RAm        R.A. RC2
  50      1X     ---      ---        Blank
  51      A1     ---      DE-        Declination sign RC2
  52-53   I2     deg      DEd        Declination 1950 RC2
  54-58   F5.1   arcmin   DEm        Dec. RC2
  59-66   F8.2   ---      Xray_ct   *X-ray count-rate
  67-74   F8.2   ---      e_Xray_ct *X-ray count-rate, 1-sigma error
  75-80   F6.3   ---      Corr      *Correction factor to X-ray ct rate
  81-86   F6.3   ---      Vignette  *Vignetting correction to X-ray ct rate
  87-88   2X     ---      ---        Blank
  89      I1     ---      Ap_code   *Code for X-ray aperture size
--------------------------------------------------------------------------------

Notes for file: table5.dat
--------------------------------------------------------------------------------
Name:
  Name for Shapley-Ames Galaxy given in RC2 (de Vaucouleurs,
  de Vaucouleurs & Corwin 1976, Univ. of Texas).

B_T:
  Either B_T (if given) or otherwise m_B as given in computer
  version of RC2.

Log_D:
  Log of RC2 observed B mag diameter, Log D_25, as observed,
  given in units of 0.1 arcmin.

Gal_Type:
  RC2 numerical code for galaxy morphological type, with the
  Burstein revision that I0 = -7 (not 0 as in RC2).

IPC_fld:
  IPC Field Number on which X-ray flux was measured.  If
  more than one IPC field was measured, a -1 is entered here,
  and the fields used are given in Table 8 of the paper.

Exp_time:
  Total exposure time for IPC images, summed over all observed fields.

Xray_ct:
  X-ray count rate and error, in units of 1000 times observed
  count rate, only deadtime-corrected and background-corrected.

e_Xray_ct:
  Error in X-ray count rate, taking into account all sources
  of random error.

Corr:
  Multiplicative correction factor for HI column density and
  source energy distribution, to transform vignetting-corrected
  and dead-time corrected source counts to X-ray flux in units
  of 10^{-11} ergs/cm2/s.

Vignette:
  Vignetting correction, to be divided into observed count rate.

Ap_code:
  Numerical code for the largest aperture used to obtain the
  X-ray count rate. 1 = 200" aperture, 2 = 232" aperture,
  3 = 264" aperture and 4 = 296" aperture.
--------------------------------------------------------------------------------


Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
  Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1-10   A10    ---      Name      UGC number of galaxy
  11-15   F5.2   mag      m_B      *B mag as given in the UGC
  16-18   3X     ---      ---       Blank
  19-22   F4.2  0.1arcmin Log_D    *Log B diameter, UGC
  23-24   2X     ---      ---       Blank
  25-26   I2     ---      Gal_Type *Burstein Morphological Type Code, UGC
  27-32   I6     ---      IPC_fld   IPC Field Number (-1 if more than one)
  33-39   I7     s        Exp_time  Total exposure time for IPC field(s)
  40-41   2X     ---      ---       Blank
  42-43   I2     hr       RAh      *Right Ascension 1950
  44-49   F6.2   min      RAm      *R.A.
  50      1X     ---      ---       Blank
  51      A1     ---      De-      *Declination sign
  52-53   I2     deg      Ded      *Declination 1950
  54-58   F5.1   arcmin   Dem      *Dec.
  59-66   F8.2   ---      Xray_ct   X-ray count-rate
  67-74   F8.2   ---      e_Xray_ct X-ray count-rate, 1-sigma error
  75-80   F6.3   ---      Corr      Correction factor to X-ray ct rate
  81-86   F6.3   ---      Vignette  Vignetting correction to X-ray ct rate
  87-88   2X     ---      ---       Blank
  89      I1     ---      Ap_code   Code for X-ray aperture size
--------------------------------------------------------------------------------

Notes for file: table6.dat
--------------------------------------------------------------------------------
m_B:
  If m_B le 15.7, comes from Zwicky via Huchra (1976)
  corrections.  Otherwise it is just a rough estimate
  (accuracy 0.5-1.0 mag) by Nilson.

Log_D:
  Log of UGC B mag diameter, given in units of 0.1 arcmin.

Gal_Type:
  Burstein developed a hierarchical numerical typing
  system for Morphological types.  The abbreviated system for
  the UGC and ESO catalogs is as follows:
    Burstein Code Number   Classification
                 1          E and E/S0
                10          All S0
                11          All S0/a
                12          All Sa
                13          All Sa/b
                14          All Sb
                15          All Sb/Sc
                16          All Sc
                17          All Sc/Sd
                18          All Sd
                19          All Sd/Irr
                20          All Irr
                30          All non-divided classified types
                40          Dwarf galaxies
                50          Compact galaxies and N galaxies
                60          Multiple systems
                70          Peculiar glaaxies
                90          No galaxy class given

RAh, RAm, DE-, DEd, DEm:
    Right Ascension and Declination are as determined either
    by Dressel & Condon (1976) or by our own measurements.
    Accuracy of +-8" in positions.
--------------------------------------------------------------------------------


Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
  Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1-14   A14    ---      Name      ESO name for galaxy
  15-20   F6.2   mag      m_B      *[]?=0.00 B mag, ESO-LV catalog
  21-23   3X     ---      ---       Blank
  24-28   F5.2  0.1arcmin Log_D    *[]?=-1.10 Log B diameter, ESO-LV
  29-30   2X     ---      ---       Blank
  31-32   I2     ---      Gal_Type *Burstein Morphological Type Code, ESO
  33-38   I6     ---      IPC_fld   IPC Field Number (-1 if more than one)
  39-44   I6     s        Exp_time  Total exposure time for IPC field(s)
  45-46   2X     ---      ---       Blank
  47-48   I2     hr       RAh       Right Ascension 1950 ESO
  49-54   F6.2   min      RAm       R.A. ESO
  55      1X     ---      ---       Blank
  56      A1     ---      DE-       Declination sign ESO
  57-58   I2     deg      DEd       Declination 1950 ESO
  59-63   F5.1   arcmin   DEm       Dec. ESO
  64-71   F8.2   ---      Xray_ct   X-ray count-rate
  72-79   F8.2   ---      e_Xray_ct X-ray count-rate, 1-sigma error
  80-85   F6.3   ---      Corr      Correction factor to X-ray ct rate
  86-91   F6.3   ---      Vignette  Vignetting correction to X-ray ct rate
  92-93   2X     ---      ---       Blank
  94      I1     ---      Ap_code   Code for X-ray aperture size
--------------------------------------------------------------------------------

Notes for file: table7.dat
--------------------------------------------------------------------------------
m_B:
  B mag as given in the ESO-LV catalog (Lauberts & Valentijn
  1989).  0.00 if no mag given.

Log_D:
  Log of ESO-LV B mag diameter at 25th mag isophote; -1.10
  if no diameter given.

Gal_Type:
  See the note for Gal_Type in table6.dat.
--------------------------------------------------------------------------------


Byte-by-byte Description of file: table9.dat
--------------------------------------------------------------------------------
  Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1-10   A10    ---      Name     *Name given in the RC2
  11-16   F6.2   mag      B_T      *B mag as given in the RC2
  17-18   2X     ---      ---       Blank
  19      I1     ---      ex_code  *Reason for omission from survey
--------------------------------------------------------------------------------

Notes for file: table9.dat
--------------------------------------------------------------------------------
Name:
  Name for Shapley-Ames Galaxy given in RC2 (de Vaucouleurs,
  de Vaucouleurs & Corwin 1976, Univ. of Texas).

B_T:
  Either B_T (if given) or otherwise m_B as given in computer
  version of RC2.

ex_code:
  Reason for omitting galaxy from X-ray survey:
    0 = image not available in processed form;
    2 = on IPC 'ribs';
    3 = on or off edge of IPC field;
    4 = in obvious diffuse emission;
    7 = too large for this survey
    9 = only HRI image available.
--------------------------------------------------------------------------------


Byte-by-byte Description of file: table10.dat
--------------------------------------------------------------------------------
  Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1-10   A10    ---      Name      UGC number of galaxy
  11-16   F6.2   mag      B_T       B mag as given in the UGC
  17-18   2X     ---      ---       Blank
  19      I1     ---      ex_code   Reason for omission from survey
--------------------------------------------------------------------------------

Notes for file: table10.dat
--------------------------------------------------------------------------------
B_T:
  B mag as given in UGC.  If B_T le 15.7, comes from Zwicky;
  otherwise just a rough estimate (accuarcy 0.5-1.0 mag).

ex_code:
  Reason for omitting galaxy from X-ray survey:
    0 = image not available in processed form;
    2 = on IPC 'ribs';
    3 = on or off edge of IPC field;
    4 = in obvious diffuse emission;
    9 = only HRI image available.
--------------------------------------------------------------------------------


Byte-by-byte Description of file: table11.dat
--------------------------------------------------------------------------------
  Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1-14   A14    ---      Name      ESO name for galaxy
  15-20   F6.2   mag      B_T      *[]?=0.00 B mag as given by ESO-LV
  21-22   2X     ---      ---       Blank
  23      I1     ---      ex_code  *Reason for omission from survey
--------------------------------------------------------------------------------

Notes for file: table11.dat
--------------------------------------------------------------------------------
B_T:
  B mag as given in the ESO-LV catalog (Lauberts & Valentijn
  1989).  0.00 if no mag given.

ex_code:
  Reason for omitting galaxy from X-ray survey:
    0 = image not available in processed form;
    2 = on IPC 'ribs';
    3 = on or off edge of IPC field;
    4 = in obvious diffuse emission;
    9 = only HRI image available.
--------------------------------------------------------------------------------


Byte-by-byte Description of file: table12.dat
--------------------------------------------------------------------------------
  Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1-10   A10    ---      Name      *Name given in the RC2
  11-14   I4     km/s     V_helio   *Heliocentric radial velocity
  15-21   F7.2   Mpc      Distance  *Distance
  22-23   2X     ---      ---        Blank
  24-25   I2     ---      r_Dist    *Source of distance
  26-32   F7.2   mag      Abs_B_T   *Absolute Blue mag
  33-39   F7.2   kpc      Log_D_abs *Log of metric diameter
  40      1X     ---      ---        Blank
  41      A1     ---      l_L_xray  *[ <]? Symbol if detected or upper limit
  42-46   F5.2   ergs/s   L_xray    *Log of Absolute X-ray luminosity/upp-limit
  47-49   3X     ---      ---        Blank
  50      I1     ---      Sy_code   *[]? Code if Seyfert galaxy
--------------------------------------------------------------------------------

Notes for file: table12.dat
--------------------------------------------------------------------------------
Name:
  Name for Shapley-Ames galaxy as given in the RC2.

V_helio:
  The heliocentric velocity, from sources as cited in the
  paper, including:  RC2, RC3, NASA Extragalactic Database (NED)

Distance:
  Distance, in Mpc, based on the source of distance (r_Dist),
  assuming H_0 = 75 km/s/Mpc.

r_Dist:
   A numerical code for the source of distance estimate.
   All independent distance measurements come from
   Willick et al. (1996b, ApJ 457, 460 and ADC-distributed
   data base); see references therein for details of individual
   data sets.  The abbreviations correspond to the notation of
   Willick et al.
     1 = Faber et al. (1989)
     2 = Tormen & Burstein reanalysis of Aaronson et al. (1982)
         H_{-0.05} magnitudes (A82);
     3 = Han, Mould et al. Northern survey data
        (e.g., Han & Mould, 1992; HM);
     4 = Han, Mould et al. Southern survey data
        (e.g., Han & Mould, 1992; HM);
     5 = Courteau and Faber data (CF; Courteau, 1992);
     6 = Mathewson, Ford & Buchhorn (1992; MAT);
     7,8 = Willick (Willick et al., 1996b);
     9 = from Faber-Burstein Great Attractor velocity field model
         for an associated cluster or a Local Group galaxy;
    10 = from Faber-Burstein Great Attractor velocity field
         model for this galaxy;
    90 = from Mark II data set (Burstein, 1989, email
         distribution);
    99 = from Willick et al. (1996b) but observed 2 or more times.

Abs_B_T:
  Absolute Blue mag, corrected for Galactic extinction from
  Burstein & Heiles (AJ 1984 and from the BH reddening maps)
  and redshift/K-corr via RC2 principles.  For spiral and
  irregular galaxies, also corrected for inclination via
  the general RC3 relation:  delta B_T = -1.5 log (a/b), where
  a/b is the observed axial ratio.

Log_D_abs:
  Absolute B mag diameter, 25th mag isophote, in kpc.  Corrected
  for Galactic extinction only; no inclination correction made.

l_L_xray:
  Upper limit symbol. '<' if upper limit; >2.5 sigma detection
  if blank.

L_xray:
  Log of absolute X-ray luminosity, fully-corrected as
  described in the paper.

Sy_code:
  A code for the type of Seyfert galaxy:
  blank = not a Seyfert
  1 = Seyfert 1
  2 = Seyfert 2
  3 = Seyfert ?
  Seyfert classifications taken from NED.
--------------------------------------------------------------------------------


Byte-by-byte Description of file: table13.dat
--------------------------------------------------------------------------------
  Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1- 9   A9     ---      Name       UGC number of galaxy
  10-14   I5     km/s     V_helio    Heliocentric radial velocity
  15-21   F7.2   Mpc      Distance   Distance
  22-23   2X     ---      ---        Blank
  24-25   I2     ---      r_Dist     Source of distance
  26-32   F7.2   mag      Abs_B_T    []?=0.00 Absolute Blue mag
  33-39   F7.2   kpc      Log_D_abs  Log of metric diameter
  40      1X     ---      ---        Blank
  41      A1     ---      l_L_xray   [ <]? Symbol if detected or upper limit
  42-46   F5.2   ergs/s   L_xray     Log of Absolute X-ray luminosity/upp-limit
  47-49   3X     ---      ---        Blank
  50      I1     ---      Sy_code    []? Code if Seyfert galaxy
--------------------------------------------------------------------------------


Byte-by-byte Description of file: table14.dat
--------------------------------------------------------------------------------
  Bytes Format  Units    Label     Explanations
--------------------------------------------------------------------------------
   1-13   A13    ---      Name       ESO name for galaxy
  14-18   I5     km/s     V_helio    Heliocentric radial velocity
  19-25   F7.2   Mpc      Distance   Distance
  26-27   2X     ---      ---        Blank
  28-29   I2     ---      r_Dist     Source of distance
  30-36   F7.2   mag      Abs_B_T    []?=0.00 Absolute Blue mag
  37-43   F7.2   kpc      Log_D_abs  []?=0.00 Log of metric diameter
  44      1X     ---      ---        Blank
  45      A1     ---      l_L_xray   [ <]? Symbol if detected or upper limit
  46-50   F5.2   ergs/s   L_xray     Log of Absolute X-ray luminosity/upp-limit
  51-53   3X     ---      ---        Blank
  54      I1     ---      Sy_code    []? Code if Seyfert galaxy
--------------------------------------------------------------------------------

================================================================================
(End) D. Burstein et al. [Arizona State Univ.] rev. Lee Brotzman [ADS] 17-Jun-97