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J/A+A/333/658 D-type symbiotic stars emission line fluxes (Pereira+ 1998)
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Spectroscopic observations of D-type symbiotic stars
Pereira C.B., Landaberry S.J.C., Junqueira S.
<Astron. Astrophys. 333, 658 (1998)>
=1998A&A...333..658P (SIMBAD/NED BibCode)
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ADC_Keywords: Binaries, spectroscopic; Spectroscopy
Keywords: symbiotic stars - stars: abundances
Abstract:
Observations of five D-type symbiotics are presented: three oxygen
Mira (He2-38, H2-38 and H1-36) and two carbon Mira symbiotics (AS 210
and SS 38). The observations in the spectral range between 3200{AA}
and 7400{AA} show the presence of several emission lines in various
states of excitation. A line list is provided with their suggested
identifications. Several parameters were derived for each object:
interstellar reddening as determined from Balmer decrement and He II
lines, temperature and electronic density, abundance ratios of Ne/O,
Ar/O, Fe/Ne, N/O and He/H. We found nitrogen enrichment while for the
other elements their abundances are compatible with solar, except iron
which is depleted. We did not detect significant changes in the line
and in the continuos spectra of the stars analyzed here, except for
He2-38, which increased its degree of excitation compared to Allen's
(1984PASAu...5..562N) catalogue.
Objects:
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RA (2000) DE Designation(s)
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09 54 43.2 -57 18 53 Hen 2-38 = V366 Car = PK 280-02 1
16 51 20.4 -26 00 27 AS 210 = Hen 3-1265 = PK 355+11 1
18 06 01.0 -28 17 06 PN H 2-38 = PK 002-03 4 = Hen 2-343
17 49 48.1 -37 01 28 PN H 1-36 = PK 353-04 1 = Hen 2-289
06 21 04.4 +22 10 12 SS 38
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 50 252 Observed emission line fluxes relative to
H-{beta} = 100
table7.tex 123 303 LaTeX version of table2
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See also:
III/174 : Atlas of line profiles of symbiotic stars (VanWinckel+, 1994)
Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 4 I4 0.1nm lambda ? Wavelength
6- 15 A10 --- Ion Ion
16 A1 --- n_Ion [*] Note on Ion (1)
17- 22 F6.1 --- He2-38 ? Relative line fluxes of He2-38 (H{beta}=100)
24- 29 F6.1 --- AS210 ? Relative line fluxes of AS 210 (H{beta}=100)
31- 36 F6.1 --- H2-38 ? Relative line fluxes of H2-38 (H{beta}=100)
38- 43 F6.1 --- H1-36 ? Relative line fluxes of H1-36 (H{beta}=100)
45- 50 F6.1 --- SS38 ? Relative line fluxes of SS 38 (H{beta}=100)
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Note (1) : O VI Raman scattered
w1 : present in NGC 7027 , Wyse (1942ApJ....95..356W)
w2 : present in NGC 7027 , Wyse (1942ApJ....95..356W)
w3 : present in NGC 6741 , Wyse (1942ApJ....95..356W)
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Acknowledgements: Claudio Pereira <claudio@balmer.physics.utep.edu>
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(End) Patricia Bauer [CDS] 30-Jan-1998