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J/A+A/312/221       Excess CaII H&K emission in active binaries  (Montes+, 1996)
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The behaviour of the excess CaII H & K and Hepsilon emissions
in chromospherically active binaries
    Montes D., Fernandez-Figueroa M.J., Cornide M., De Castro E.
   <Astron. Astrophys. 312, 221 (1996)>
   =1996A&A...312..221M      (SIMBAD/NED BibCode)
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ADC_Keywords: Stars, double and multiple ; Spectroscopy
Keywords: stars: activity  - stars: binaries: close - stars: chromospheres -
          stars: late-type - stars: rotation

Description:
    In this work we analyze the behaviour of the excess CaII H & K and
    H_epsilon emissions in a sample of 73 chromospherically active binary
    systems (RS CVn and BY Dra classes), of different activity levels and
    luminosity classes. This sample includes the 53 stars analyzed by
    Fernandez-Figueroa et al. (1994) and the observations of 28 systems
    described by Montes et al. (1995). By using the spectral subtraction
    technique (subtraction of a synthesized stellar spectrum constructed
    from reference stars of spectral type and luminosity class similar to
    those of the binary star components) we obtain the active-chromosphere
    contribution to the CaII H & K lines in these 73 systems. We have
    determined the excess CaII H & K emission equivalent widths and
    converted them into surface fluxes. The emissions arising from each
    component were obtained when it was possible to deblend both
    contributions.

File Summary:
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  FileName   Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe          80        .   This file
table1         102       93   CaII H & K lines measures in the observed
                              and subtracted spectrum  (Group 1)
table2         109       68   CaII H & K lines measures in the observed
                              and subtracted spectrum  (Group 2)
table3         132       64   CaII H & K lines measures in the observed
                              and subtracted spectrum  (Group 3)
table4          83       19   CaII H & K lines measures in the observed
                              and subtracted spectrum  (Single stars or
                              components of visual binaries)
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See also:
    V/76 : A catalog of chromospherically Active Binaries

Byte-by-byte Description of file: table1 table2 table3
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  Bytes Format   Units   Label     Explanations
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  1- 12 A12      ---     Name      Name
 14- 21 A8    "DD/MM/YY" Date      Date mm/dd/yy
 23- 26 F4.2     ---     phi       ? [0/1] Orbital phase
     28 A1       ---     E         H: hot C: cool T: Total
 30- 38 A9       ---     SH/SC     ? Weights for the hot and cool component
 40- 44 F5.3     0.1nm   EW(K)     ? EW(K) by reconstruction of the
                                      absorption line
 46- 50 F5.3     0.1nm   EW(H)     ? EW(H) by reconstruction of the
                                      absorption line
 52- 56 F5.3     0.1nm   EW(K)s    ? EW(K) in the subtracted spectrum
 58- 62 F5.3     0.1nm   EW(H)s    ? EW(H) in the subtracted spectrum
 64- 68 F5.3     0.1nm   EW(Hep)s  ? EW(H_epsilon) in the subtracted spectrum
 70- 74 F5.2     0.1nm   EW(K)c    ? EW(K) corrected
 75- 79 F5.2     0.1nm   EW(H)c    ? EW(H) corrected
 81- 84 F4.2     0.1nm   EW(Hep)c  ? EW(H_epsilon) corrected
 86- 89 F4.2  10mW/m2/nm logF(K)   ? log CaII K surface flux
 91- 94 F4.2  10mW/m2/nm logF(H)   ? log CaII H surface flux
 96- 99 F4.2  10mW/m2/nm logF(Hep) ? log H_epsilon surface flux
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Byte-by-byte Description of file: table4
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   Bytes Format     Units  Label    Explanations
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   1- 12  A12       ---    HD       HD number
  14- 25  A12       ---    Name     Name
  27- 31  F5.3      ---    F(1.0)K  Core flux at 1.0A for the K line in the
                                     normalized spectrum
  33- 37  F5.3      ---    F(1.0)H  Core flux 1.0A for the H line in the
                                     normalized spectrum
  39- 43  F5.3      0.1nm  EW(K)    EW(K) by reconstruction of the
                                      absorption line
  45- 49  F5.3      0.1nm  EW(H)    ? EW(H) by reconstruction of the
                                       absorption line
  51- 55  F5.3      0.1nm  EW(K)s   ? EW(K) in the subtracted spectrum
  57- 61  F5.3      0.1nm  EW(H)s   ? EW(H) in the subtracted spectrum
  63- 67  F5.3      0.1nm  EW(He)s  ? EW(H_epsilon) in the subtracted spectrum
  69- 72  F4.2  10mW/m2/nm logF(K)  log CaII K surface flux (erg/cm2/s/A)
  74- 77  F4.2  10mW/m2/nm logF(H)  ? log CaII H surface flux
  79- 82  F4.2  10mW/m2/nm logF(He) ? log CaII H-epsilon surface flux
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Courtesy: David Monte <dmg@astro4.fis.ucm.es>

References:
  Fernandez-Figueroa M.J., Montes D., De Castro E., Cornide M.,
   1994, ApJS 90, 433             =1994ApJS...90..433F
  Montes D., De Castro E., Fernandez-Figueroa M.J., Cornide M.
   1995, A&AS 114, 287            =1995A&AS..114..287M
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(End)                                         Patricia Bauer [CDS]   20-May-1996