J/other/JAD/14.3 Emission lines in 32 Cygni (Eaton, 2008)
Emission lines in 32 Cygni.
Eaton J.A.
<J. Astron. Data, 14, 3-18 (2008)>
=2008JAD....14....3E 2008JAD....14....3E
ADC_Keywords: Binaries, eclipsing ; Spectra, ultraviolet ; Spectroscopy
Abstract:
I identify the profusion of emission lines seen in IUE spectra of 32
Cyg (K4-5 Ib+B6-7 IV-V) during total eclipse. With the exception of a
very few weak lines, all of these are also seen in zeta Aur during its
eclipse, and the stronger features appear in 31 Cyg. Seventy-four
percent of these emission lines can be attributed to FeII. Few are
intrisically weaker than gf∼0.01. Other spectra definitely present are
CII, NI, OI, SiII, MgII, SII, CrII, NiII, AlII, AlIII, FIII, SiIV, and
CIV. No emission lines of the neutral metals, except for fluorescent
FeI UV44, are unambiguously detected; specifically, lines of CI, SiI,
or SI were not detected in the spectrum.
Description:
The observations analyzed consist of a pair of deeply exposed IUE
spectra of 32 Cyg taken in total eclipse on 31 March 1981 by R.E.
Stencel.
Objects:
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RA (2000) DE Designation(s)
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20 15 28.3 +47 42 51 32 Cyg = V* V1488 Cyg
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 62 615 Ultraviolet lines
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2- 8 F7.2 0.1nm lambda [1190/3011] Measured wavelength (Å)
11- 14 I4 10-17W/m2 Flux ? Line flux (in 10-14ergs/cm2/s)
17- 24 F8.3 0.1nm lambda0 ? Laboratory wavelength of identified line
27- 56 A30 --- Mult Multiplet of identified line
58- 62 A5 --- Notes Notes (1)
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Note (1): Notes as follows:
s = saturated
r = affected by a reseau
o = might be affected by the edge of an echelle order
f = known fluorescent line
Z = also clearly present in the eclipse spectrum of zeta Aur
S = identified in zeta Aur by Stencel & Chapman (1981ApJ...251..597S 1981ApJ...251..597S)
3 = present in the eclipse spectrum of 31 Cyg
B = listed in 31 Cyg by Bauer & Stencel (1989ApJS...69..667H 1989ApJS...69..667H)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Jan-2012