Access to Astronomical Catalogues

J/ApJS/117/361      PNe in NRAO VLA Sky Survey (Condon+ 1998)
Planetary nebulae in the NRAO VLA sky survey
       Condon J.J., Kaplan D.L.
      <Astrophys. J. Suppl. Ser. 117, 361 (1998)>
      =1998ApJS..117..361C      (SIMBAD/NED BibCode)
ADC_Keywords: Planetary nebulae ; Radio lines

Keywords: catalogs - dust, extinction - planetary nebulae: general -
          radio continuum: ISM - surveys

Abstract:
    The 1.4GHz NRAO VLA Sky Survey (NVSS) images and source catalog were
    used to detect radio emission from the 885 planetary nebulae north of
    J2000 declination δ=-40° in the Strasbourg-ESO Catalogue of
    Galactic Planetary Nebulae (Cat. V/84). We identified 680 radio
    sources brighter than about S=2.5mJy/beam (equivalent to T∼0.8K in the
    45" FWHM NVSS beam) with planetary nebulae by coincidence with
    accurate optical positions measured from Digitized Sky Survey (DSS)
    images. Total extinction coefficients c at λ=4861Å were
    calculated for the 429 planetary nebulae with available Hβ fluxes
    and low free-free optical depths at 1.4GHz. The variation of c with
    Galactic latitude and longitude is consistent with the extinction
    being primarily interstellar and not intrinsic.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       122      885   Optical and radio data
notes.dat         80      161   Individual notes


See also:
    V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units     Label     Explanations

   1- 10  A10   ---       PNG       IAU name (PN G)
  12- 13  I2    h         RAh       ? Optical right ascension (B1950)
  15- 16  I2    min       RAm       ? Optical right ascension (B1950)
  18- 21  F4.1  s         RAs       ? Optical right ascension (B1950)
      23  A1    ---       DE-       Optical declination sign (B1950)
  24- 25  I2    deg       DEd       ? Optical declination (B1950)
  27- 28  I2    arcmin    DEm       ? Optical declination (B1950)
  30- 31  I2    arcsec    DEs       ? Optical declination (B1950)
  33- 34  I2    h         RA2h      ? Optical right ascension (J2000)
  36- 37  I2    min       RA2m      ? Optical right ascension (J2000)
  39- 42  F4.1  s         RA2s      ? Optical right ascension (J2000)
      44  A1    ---       DE2-      Optical declination sign (J2000)
  45- 46  I2    deg       DE2d      ? Optical declination (J2000)
  48- 49  I2    arcmin    DE2m      ? Optical declination (J2000)
  51- 52  I2    arcsec    DE2s      ? Optical declination (J2000)
  54- 55  I2    arcsec    e_Pos     ? Optical position uncertainty
  57- 58  I2    h         RArh      ? Radio right ascension (J2000)
  60- 61  I2    min       RArm      ? Radio right ascension (J2000)
  63- 67  F5.2  s         RArs      ? Radio right ascension (J2000)
  69- 72  F4.2  arcsec    e_RArs    ? rms uncertainty on RAr
      74  A1    ---       DEr-      Radio declination sign (J2000)
  75- 76  I2    deg       DErd      ? Radio declination (J2000)
  78- 79  I2    arcmin    DErm      ? Radio declination (J2000)
  81- 84  F4.1  arcsec    DErs      ? Radio declination (J2000)
  86- 89  F4.1  arcsec    e_DErs    ? rms uncertainty on DEr
      91  A1    ---       l_S       [~<>] Limit flag on S
  92- 97  F6.1  mJy       S         ? 1.4GHz flux-density peak
  99-103  F5.1  mJy       e_S       ? rms uncertainty on S
 105-109  F5.1  arcsec    PhiM      ? Deconvolved Gaussian FWHM major axis
     111  A1    ---       l_Phim    Limit flag on Phim
 112-115  F4.1  arcsec    Phim      ? Deconvolved Gaussian FWHM minor axis
 117-120  F4.1  ---       c         ? Total Hβ extinction coefficient (1)
     122  A1    ---       Note      [*BCE] Notes (2)

Note (1): c = log[Fc(Hbeta)/F(Hbeta)],
               where Fc(Hbeta) is the Hbeta flux corrected for extinction
Note (2): B: blanked radio image
          C: confused radio source
          E: very extended nebula whose flux density could not be measured
          *: individual note in notes.dat file


Byte-by-byte Description of file: notes.dat

   Bytes Format Units   Label     Explanations

   1- 14  A14   ---     PNG       IAU name (PN G)
  16- 80  A65   ---     Note      Text of the note


History: From ApJS electronic version

(End)                           James Marcout, Patricia Bauer [CDS]  25-Sep-1998