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J/ApJS/73/661       H II regions in M 101          (Hodge+ 1990)
The H II regions of M 101. I. An atlas of 1264 emission regions
      Hodge P., Gurwell M., Goldader J.D., Kennicutt R.C. Jr.
     <Astrophys. J. Suppl. Ser. 73, 661 (1990)>
     =1990ApJS...73..661H      (SIMBAD/NED BibCode)
ADC_Keywords: Atlases ; H II regions

Keywords: galaxies: individual (M101) - nebulae: H II regions


Abstract:
    A previous survey of the H II regions in M101 (Hodge and Kennicutt)
    has been extended by a series of CCD images and image tube plates of
    the galaxy, approximately tripling the number of known emission
    regions. This paper provides maps and a catalog of a total of 1264 H
    II regions in M101.
Objects:
    ----------------------------------------------------------
       RA  (2000)  DE    Designation(s)
    ----------------------------------------------------------
    14 03.3     +54 21   M101 = NGC 5457
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1            39      660   H II regions with positions from CCD frames
table2            40      604   H II regions with positions from image tube plates
table3            15      109   H II regions within NGC complexes


Byte-by-byte Description of file: table1 table2

   Bytes Format Units   Label     Explanations

   1-  4  I4    ---     Seq       Sequental number
   6- 10  A5    ---     Frame     CCD frame (table1) or
                                   image tube plate localisation (table2)
  12- 13  I2    h       RAh       Right ascension (J2000.0)
  15- 16  I2    min     RAm       Right ascension (J2000.0)
  18- 21  F4.1  s       RAs       Right ascension (J2000.0)
      23  A1    ---     DE-       Declination sign
  24- 25  I2    deg     DEd       Declination (J2000.0)
  27- 28  I2    arcmin  DEm       Declination (J2000.0)
  30- 31  I2    arcsec  DEs       Declination (J2000.0)
  33- 35  I3    ---     N1982     ? Chart number in Hodge & Kennicutt,
                                      1983ApJ...267..563H
  37- 39  I3    ---     N1969     ? Chart number in Hodge, 1969ApJS...18...73H


Byte-by-byte Description of file: table3

   Bytes Format Units   Label     Explanations

   1-  8  A8    ---     NGC       NGC name
  10- 13  I4    ---     HII       HII region number


History: Prepared via OCR at CDS.

(End)                      Marie-Jose Wagner,  Patricia Bauer [CDS]  02-May-1997