Astronomical Data Center

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/catalogs/2/2086/

The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:

1. Use the ADC Data Viewer Suite to visualize the data. [preview
2. Get the data files via anonymous FTP. (See Note.) [ftp


II/86       UV Bright-Star Spectrophotetric Supplement      (Macau-Hercot+ 1978)
================================================================================
Supplement to the Ultraviolet Bright Star Spectrophotometric Catalogue
    Macau-Hercot D., Jamar C., Monfils A., Thompson L., Houziaux L.,
    Wilson R.
    <ESA Special Report 28 (1978)>
    =1978stub.book.....M
================================================================================
ADC_Keywords: Spectrophotometry ; Photometry, ultraviolet
Mission_Name: TD1

Description:
    This catalogue is a supplement of the Ultraviolet Bright Star
    Spectrophotometric Catalogue (=III/39A). It contains observations
    carried out by the S2/68 Ultraviolet Sky Survey Telescope (UVSST)
    aboard the ESRO satellite TD-1. The data presented in this supplement
    were obtained during the second and third observation periods, which
    lasted from 19 February 1973 to 30 September 1973 and from 16 February
    to 6 May 1974. The S2/68 experiment has been described by Boksenberg
    et al. (=1973MNRAS.163..291B)

    Owing to the optical scanning mode, most of the stars observed during
    the first observational period, the spectra of which are included in
    the "Ultraviolet Bright-Star Spectrophotometric Catalogue", were
    seen again by the telescope. This supplement, however, has been
    limited to the spectra of stars that were not observed during the
    first period. The data reduction and selection criteria are identical
    to those underlying the main Catalogue and hence the data presented in
    the Supplement are directly comparable with those in the main
    Catalogue.

    The Supplement contains data for 435 stars. For a statistical summary
    of the observed stars, see the tables I and II in the published version
    of the Supplement. The spectrum scanning itself was achieved by the
    movement of a star image across the wide entrance slot of the
    spectrophotometer, which caused the corresponding spectrum image to
    pass over the three exit slits in the direction of dispersion. The
    motion of the primary image during each detector integration interval
    (0.148 s) was equivalent to 19.4 A, depending on the channel. The
    wavelength range covered was 1350 - 2550 A. The passband of the
    photometer channel, defined by a glass transmission filter and the
    photocathode tube response, was centered at 2740 A and had a full
    width at half height of 310 A.


File Summary:
--------------------------------------------------------------------------------
 FileName    Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
suppl         1484        435    The UV Spectrophotometric Supplement.
--------------------------------------------------------------------------------

See also:
   II/59 : Catalogue of stellar UV fluxes (TD1) (Thompson et al., 1978)
  III/39 : UV Bright Star Spectrophotometric Catalog (Jamar et al., 1976)

Byte-by-byte Description of file: suppl
--------------------------------------------------------------------------------
   Bytes    Format  Units    Label   Explanations
--------------------------------------------------------------------------------
   1-  2     I2     h        RAh     Right Ascension 1900 (hours) from HD
   3-  6     F4.1   min      RAm     Right Ascension 1900 (minutes) from HD
       7     A1     ---      DE-     Declination 1900 (sign) from HD
   8-  9     I2     deg      DEd     Declination 1900 (degrees) from HD
  10- 11     I2     arcmin   DEm     Declination 1900 (minutes) from HD
  13- 18     I6     ---      HD      designation
  20- 21     I2     ---      Nsp     Number of individual spectra that
                                        have been averaged
  22- 30     E9.2 10mW/m2/nm F2740   Flux measured by the first photometer
                                        at 274nm (see TD1 Catalogue,
                                        Thompson et al., 1978)
  31- 33     I3     %        e_F2740 []? Mean error on F2740
  34- 42     E9.2 10mW/m2/nm Fmax    Highest flux for that star
  45-1124 120E9.2 10mW/m2/nm Flux    []? UV fluxes at wavelengths from 135nm
                                        to 254nm, (1350-2540A), step 1nm(10A)
                                        (units are erg/cm2/s/Angstroem)
 1125-1484  120I3   %        e_Flux  []? Error on Fluxes, in percent
--------------------------------------------------------------------------------

References:
  Boksenberg A., Evans R.G., Fowler R.G., Gardner I.S.K., Houziaux L.,
    Humphries C.M., Jamar C., Macau D., Malaise D., Monfils A., Nandy K.,
    Thompson G.I., Wilson R., Wroe H., =1973MNRAS.163..291B
  Jamar C., Macau-Hercot D., Monfils A., Thompson G.I., Houziaux L.,
    Wilson R., 1976, "Ultraviolet Bright Star Spectrophotometric
    Catalogue", ESA Special Report 27,  =III/39A
  Thompson G.I., Nandy K., Jamar C., Monfils A., Houziaux L., Carnochan A.,
    Wilson R., 1978, "Catalogue of stellar ultraviolet fluxes (TD1)",
    The Science Research Council, U.K., =II/59B
  Thompson G.I., Nandy K., Jamar C., Monfils A., Houziaux L., Carnochan A.,
    Wilson R., 1979, =1979BICDS..17...78T, Catalog =V/38

Historical Notes:
  * The catalogue was provided to CDS by G.I. Thompson in 1979.
  * A CD-ROM version with most of the enclosed description section
    was created in October 1991 at ADC on the
    "Selected Astronomical Catalogs" Vol. 1 , directory
    /spectro/uvbssupp
  * 24-Oct-1995: the catalog was reformatted at CDS (Francois Ochsenbein);
    the following modifications were performed:
    => the positions were added from HD (=III/135) catalogue
    => there were initially 132 columns for lambda (the wavelength),
       132 columns for the corresponding Fluxes and 132 columns for
       the mean errors. The lambda columns were removed; the
       corresponding fluxes and errors were moved to fixed positions.
    => unknown values, originally indicated by zero fluxes and "  -" in
       the mean errors, have been blanked.
================================================================================
(End)                                     Francois Ochsenbein [CDS]  24-Oct-1995

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