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J/A+A/324/904       NGC 4151 line-continuum diagram sequences  (Malkov+ 1997)
Complex variability pattern in NGC 4151.
I. Sequences on the line-continuum diagram
     Malkov Yu.F., Pronik V.I., Sergeev S.G.
    <Astron. Astrophys. 324, 904 (1997)>
    =1997A&A...324..904M      (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, spectra ; Galaxies, Seyfert

Keywords: galaxies: active - galaxies: individual: NGC 4151 - galaxies: nuclei -
          galaxies: Seyfert - galaxies: emission lines

Description:
    We present the first results of an 8-year spectroscopic monitoring of
    the Seyfert 1.5 galaxy NGC 4151 carried out with a CCD spectrograph
    at the 2.6-m Shajn Telescope of the Crimean Astrophysical Observatory
    in 1988-1995. Total of 202 H{ alpha} region spectra and 154 Hβ
    region spectra have formed the data set. A ll spectra were calibrated
    in flux using the narrow emission lines which were as summed to be
    constant over the duration of the monitoring program.
Objects:
    ----------------------------------------------------------
       RA   (2000)   DE      Designation(s)
    ----------------------------------------------------------
    12 10 32.5   +39 24 21   NGC 4151
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1            32       35   Cassegrain H-alpha region fluxes (not corrected for
                              seeing effects)
table2            37       19   Cassegrain H-beta region fluxes (not corrected for
                              seeing effects)
table3            37      102   Nasmyth H-alpha region fluxes (corrected for seeing
                              effects)
table4            51       92   Nasmyth H-beta region fluxes (corrected for seeing
                              effects)
figure3.ps        66     8084   Seeing correction parameters phi and G for the line
                              and continuum fluxes measured in Nasmyth spectra


Byte-by-byte Description of file: table1

   Bytes Format    Units     Label     Explanations

   1- 11  F11.3    ---       JD        Average Julian Date for a night
      14  I1       ---       Nspect    Number of averaged individual spectra
  17- 20  F4.2 10-13mW/m2/nm F635nm    Continuum flux density at 635.0 nm
  23- 26  F4.2 10-13mW/m2/nm F681nm    Continuum flux density at 681.5 nm
  29- 32  F4.2    10-11mW/m2 SHalpha   Integrated H-alpha line flux


Byte-by-byte Description of file: table2

   Bytes Format    Units     Label    Explanations

   1- 11  F11.3    ---       JD       Average Julian Date for a night
      14  I1       ---       Nspect   Number of averaged individual spectra
  17- 20  F4.2 10-13mW/m2/nm F512nm   Continuum flux at 512.0 nm
  23- 26  F4.2    10-12mW/m2 SHbeta   Integrated H-beta line flux
  29- 32  F4.2    10-12mW/m2 SHeII    ? Integrated HeII 4686 line flux


Byte-by-byte Description of file: table3

   Bytes Format    Units     Label     Explanations

   1- 11  F11.3    ---       JD        Average Julian Date for a night
      14  I1       ---       Nspect    Number of averaged individual spectra
  17- 19  F3.1     arcsec    Seeing    Seeing
  22- 25  F4.2 10-13mW/m2/nm F623nm    Continuum flux at 623.0 nm
  28- 31  F4.2 10-13mW/m2/nm F691nm    Continuum flux at 691.0 nm
  34- 37  F4.2    10-11mW/m2 SHalpha   Integrated H-alpha line flux


Byte-by-byte Description of file: table4

   Bytes Format     Units    Label     Explanations

   1- 11  F11.3     ---      JD        Average Julian Date for a night
  14- 15  I2        ---      Nspect    Number of averaged individual spectra
  18- 20  F3.1      arcsec   Seeing    Seeing
  23- 27  F5.2 10-13mW/m2/nm F448mn    Continuum flux at 448.0 nm
  30- 33  F4.2 10-13mW/m2/nm F512nm    Continuum flux at 512.0 nm
  36- 39  F4.2    10-12mW/m2 SHbeta    Integrated H-beta line flux
  42- 45  F4.2    10-12mW/m2 SHeII     Integrated HeII 4686 line flux
  48- 51  F4.2    10-12mW/m2 S4540     ? Integrated 4540 feature flux


Acknowledgements: Yuri Malkov 

(End)                                         Patricia Bauer [CDS]   26-Feb-1997