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J/A+A/404/621      Light curves of ROTSE-I delta Scuti type stars   (Jin+, 2003)
Multiband photometric re-classification of ROTSE-I delta Scuti type stars.
    Jin H., Kim S.-L., Kwon S.-G., Youn J.H., Lee C.-U., Lee D.-J., Kim K.-S.
   <Astron. Astrophys. 404, 621 (2003)>
   =2003A&A...404..621J
ADC_Keywords: Stars, variable ; Photometry, CCD

Keywords: stars: variables: Delta Scuti - stars: binaries: eclipsing -
          techniques: photometric

Abstract:
    We present multi-passband CCD photometry of 20 ROTSE-I δ Scuti
    type pulsating stars and 1 RR Lyrae star to re-classify their variable
    types using the comparison of amplitudes between V and I passbands.
    For the re-classification, we used a criterion that pulsating stars
    have larger amplitude differences between passbands than eclipsing
    binaries because brightness changes of pulsating stars are mainly due
    to the temperature variations. As a result, only six stars were
    re-confirmed as δ Scuti variables and thirteen stars turned out
    to be W UMa type eclipsing binaries. The other two stars were
    identified as one cataclysmic variable and one non-variable,
    respectively. Our results suggest that a number of ROTSE-I δ
    Scuti type stars, which do not show typical pulsating light curves of
    high amplitude δ Scuti stars, are W UMa type eclipsing binaries.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
list.dat         114       21  *ROTSE parameters of the stars studied
table3a.dat       86       72   J125140.01+371546.2 light curves
table3b.dat       86       66   J134113.76+314725.5 light curves
table3c.dat       86      106   J140105.55+244216.2 light curves
table3d.dat       86       82   J152406.95+365200.9 light curves
table3e.dat       86       70   J161520.21+354226.1 light curves
table3f.dat       86       64   J164839.21+302745.6 light curves
table3g.dat       86      102   J170724.41+361525.7 light curves
table3h.dat       86       70   J171640.25+293412.9 light curves
table3i.dat       86       56   J173937.28+501202.0 light curves
table3j.dat       86       48   J181123.41+303641.4 light curves
table3k.dat       86       50   J181324.63+255008.4 light curves
table3l.dat       86       60   J181613.28+495205.0 light curves
table3m.dat       86       52   J182943.22+280955.2 light curves
table3n.dat       86       64   J183206.54+403555.9 light curves
table3o.dat       86       62   J184522.47+455321.0 light curves
table3p.dat       86       51   J191516.94+475914.5 light curves
table3q.dat       86       85   J192108.38+510200.8 light curves
table3r.dat       86       63   J193210.39+454409.7 light curves
table3s.dat       86       68   J193445.28+455416.9 light curves
table3t.dat       86       64   J194505.99+532334.5 light curves
table3u.dat       86       70   J163117.94+115952.4 light curves
table3.tex       132     1939   LaTeX version of table3

Note on list.dat: contains also the new class from the table2 of the paper,
     as well as the variable star name if existing in 2012 (added at CDS)


See also:
    J/AJ/119/1901 : ROTSE all-sky surveys for variable stars (Akerlof+, 2000)


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

   Bytes Format Units   Label     Explanations

   1- 19  A19   ---     ROTSE     RSV1 ROTSE1 name
  21- 30  F10.6 deg     RAdeg     Right ascension in decimal degrees (J2000) (4)
  32- 41  F10.6 deg     DEdeg     Declination in decimal degrees (J2000) (4)
  43- 52  F10.8 d       Per       Period
  54- 63  F10.8 d       e_Per     rms uncertainty on Per
  65- 70  F6.3  mag     mag       Mean ROTSE magnitude
  72- 76  F5.3  mag     Amp       Amplitude
  78- 81  A4    ---     ClR       ROTSE Classification: ds=δ Sct variable, 
                                  rrab=RR Lyr (class ab) star
  83- 87  A5    ---     Vtype     Our variable classification (3)
  90- 91  I2    ---     Qual      Quality flag of the light curve (2)
  93-103  A11   ---     table3    Name of the table containing the light curves
 105-114  A10   ---     VName     Name of variable (3)

Note (2): The light curve and its classification was manually graded for
     quality from 10 (excellent) to 1 (marginal)
Note (3): Columns added at CDS in 2012.
    * the type of variability is from the table 2 of the paper;
      the type HADS = High Amplitude δ Sct star
    * the name of the variable was added from the GCVS (Cat. B/gcvs)
Note (4): the size of a pixel is ∼3arcsec, and the accuracy of the position
    cannot be better than 0.3arcsec.


Byte-by-byte Description of file: table3[a-u].dat

   Bytes Format Units   Label    Explanations

   1- 14  F14.6 d       JDmag    ? Julian date of ROTSE observation
  16- 22  F7.4  mag     mag      ? ROTSE magnitude
  24- 29  F6.4  mag     e_mag    ? rms uncertainty on mag
  31- 43  F13.5 d       JDImag   ? Julian date of I band observation
  45- 52  F8.3  mag     Imag     ? I magnitude
  54- 59  F6.3  mag     e_Imag   ? rms uncertainty on Imag (99.900 => erroneous)
  61- 73  F13.5 d       JDVmag   ? Julian date of V band observation
  75- 80  F6.3  mag     Vmag     ? V magnitude
  82- 86  F5.3  mag     e_Vmag   ? rms uncertainty on Vmag


Acknowledgements: Jin Ho 

(End)                                          Patricia Bauer [CDS]  02-May-2003