J/A+A/312/221 Excess CaII H&K emission in active binaries (Montes+, 1996)
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 1996A&A...312..221M (SIMBAD/NED BibCode)
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
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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
References:
Fernandez-Figueroa M.J., Montes D., De Castro E., Cornide M.,
1994, ApJS 90, 433 =1994ApJS...90..433F 1994ApJS...90..433F
Montes D., De Castro E., Fernandez-Figueroa M.J., Cornide M.
1995, A&AS 114, 287 =1995A&AS..114..287M 1995A&AS..114..287M
(End) Patricia Bauer [CDS] 20-May-1996