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J/A+AS/117/281 Spectroscopy of HD 51585 (= OY Gem) (Jaschek+, 1996)
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B[e] stars. I. HD 51585 (= OY Gem)
Jaschek C., Andrillat Y., Jaschek M.
<Astron. Astrophys. Suppl. Ser. 117, 281 (1996)>
=1996A&AS..117..281J (SIMBAD/NED BibCode)
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ADC_Keywords: Equivalent widths ; Spectra, infrared ; Spectroscopy
Keywords: stars: emission line, B[e] - stars: variables: others -
stars: HD 51585
Description:
We analyse CCD spectroscopic material obtained at the Haute Provence
Observatory between 1990 and 1993, covering the wavelength region
380-1100mm. 320 emission lines were measured and identified. Of these
about 40% correspond to permitted or forbidden lines of ionized iron.
Many forbidden lines (20% of the total) are present, including many
classic nebular lines. We also provide a comparison of our results
with those of other authors. The equivalent width measurements permit
to follow in detail the variations of the lines of several elements
over the three years and to compare them to variations reported by
other authors. On our material the largest variations correspond to
helium, which varied by a factor of two and are not in phase with the
variations of hydrogen. Many helium lines exhibit P Cyg type profiles,
indicating strong outflow of matter from the star. The lines of other
elements follow either the variations of the helium or of the hydrogen
lines. The radial velocity varies over the years, with an amplitude of
more than 60km/s.
Objects:
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RA (2000) DE Designation(s)
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06 58.6 +16 20 HD 51585 = OY Gem = MWC 162
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 80 321 Line identification
table4 125 15 Variations in equivalent width
table5 36 24 Neutral helium lines
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See also:
J/A+AS/118/495 : B[e] stars. II. MWC 349 A
J/A+AS/120/99 : B[e] stars. III. MWC 645
J/A+AS/124/441 : B[e] stars. IV. MWC 142
J/A+AS/128/475 : B[e] stars. V. MWC 158
J/A+AS/131/479 : B[e] stars. VI. MWC 297
Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 8 F8.2 0.1nm Lambda Laboratory wavelength
9 A1 --- u_Lambda [?] Uncertainty flag on Lambda
11 A1 --- Spect1 Spectrum identification (see table1)
13- 17 F5.2 0.1nm EW1 ? Equivalent width of the line, for Spect1 (1)
18- 19 A2 --- n_EW1 Note on EW1 (2)
21 A1 --- Spect2 Spectrum identification (see table1)
23- 27 F5.2 0.1nm EW2 ? Equivalent width of the line, for Spect2 (1)
28- 29 A2 --- n_EW2 Note on EW2 (2)
32- 81 A50 --- Ident Line identification of the order element
ionization stage and multiplet number (3)
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Note (1): A blank indicates that the line is present but has not been measured
A blank followed by a dash indicates the absence of the line
on this particular plate
Note (2): * : quoted by Johansson (1977)
+p : refers to the preceding line
+f : refers to the following line
- : indicates the absence of the line on this particular plate
:) : indicates a uncertain value
Note (3): J stands for Johansson (1978)
* : quoted by Johansson (1977)
** : quoted by Hamann and Persson (1989)
*** : Jaschek et al. (1994)
**** : Andrillat and Houziaux (1996)
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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- 8 A8 --- Date Date (1)
10- 14 F5.2 0.1nm EWP12 ? P12 8750 equivalent width
16- 19 F4.2 0.1nm EWP14 ? P14 8598 equivalent width
21- 24 F4.2 0.1nm EWP16 ? P16 8502 equivalent width
26- 30 F5.2 0.1nm EWPCaIIa ? CaII 8662 equivalent width
32- 35 F4.2 0.1nm EWPCaIIb ? CaII 8498 equivalent width
37- 41 F5.2 0.1nm EWHa ? Halpha 6562 equivalent width
43- 47 F5.2 0.1nm EWHb ? Hbeta 4861 equivalent width
48- 52 F5.2 0.1nm EWHg ? Hgamma 4340 equivalent width
54- 57 F4.2 0.1nm EWHd ? Hdelta 4101 equivalent width
59- 62 F4.2 0.1nm EWOIIIa ? [OIII] 5007 equivalent width
65- 68 F4.2 0.1nm EWOIIIb ? [OIII] 4363 equivalent width
70- 74 F5.2 0.1nm EWHeI ? HeI 7065 equivalent width
76- 79 F4.2 0.1nm EWFeII ? [FeII] 7155 equivalent width
81- 84 F4.2 0.1nm EWCaII ? [CaII] 7294 equivalent width
86- 89 F4.2 0.1nm EWMgIIa ? MgII 7877 equivalent width
91- 94 F4.2 0.1nm EWMgIIb ? MgII 7896 equivalent width
96- 99 F4.2 0.1nm EWTiIIa ? [TiII] 7917 equivalent width
101-104 F4.2 0.1nm EWTiIIb ? TiII 7977 equivalent width
106-109 F4.2 0.1nm EWFeIIb ? FeII 8490 equivalent width
111-115 F5.2 0.1nm EWOI ? OI 8446 equivalent width
117-120 F4.2 0.1nm EWNIa ? NI 8617 equivalent width
122-125 F4.2 0.1nm EWNIb ? NI 8629 equivalent width
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Note (1): * from Beals C.S. and Hatcher R.D.(1948)
** from Arkhipova (1962)
The errors of the different measurements are of the order of 10%
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Byte-by-byte Description of file: table5
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Bytes Format Units Label Explanations
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1- 8 A8 --- Serie Neutral helium line serie
10- 14 I5 0.1nm Lambda Wavelength
18- 23 A6 --- Profil Profil description (1)
25- 29 F5.2 0.1nm EW ? Equivalent width
30- 31 A2 --- n_EW Note on EW (2)
33- 36 I4 --- LabInt ? Laboratory intensity
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Note (1): P: P Cyg profil
W: not covered with our material
&: continuum too noisy to decide if P Cyg profil present
Note (2): bl : blend
) : uncertain value
* : also 1 2,98 and 1 0,25
** : also 2,29 and 2,10
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Table 1. Observational data
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Date Wavelength Code Number
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04-04-93 3736-4190 a 1
25-10-91 4285-4725 b 2
25-10-91 4698-5139 c 2
08-04-93 6012-6460 d 3
20-04-92 6856-7246 e 1
24-10-91 6973-7383 f 2
06-04-93 7000-7445 g 2
28-12-90 7570-7994 h 2
07-04-93 7613-8054 i 2
31-03-93 8358-8792 j 3
21-02-92 8365-8785 k 2
27-12-90 8360-8776 l 1
27-12-90 9010-9425 m 1
14-04-92 9830-10234 n 1
30-12-90 9830-10220 o 2
20-04-92 10535-10927 p 2
30-12-90 10630-11026 q 1
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Table 3. Strong unidentified lines. (W>0.50A)
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Wavelength W Note
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3808.5 0.70 * 1
4570.9 0.68 * 1
7953.3 0.51
8423.2 0.50 * 2
8427.7 0.60
8672.2 1.20 * 2
8758.7 0.80
8765.0 0.62
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If a line had been measured more than once, the table gives an average. An
asterisk(*) stands for a mention in Meinel (1989) 1=found in symbiotic
objects 2=found in nova-like objects
References:
Andrillat Y. & Houziaux L. 1973, Men. Soc. Roy Sc. de Liege,
sixieme serie V, 377
Arkhipova V.P., 1962, Sov. Astr. 6, 286 =1962SvA.....6..286A
Beals C.S. and Hatcher R.D., 1948, Contr. Dom. Obs. Ottawa 2, No. 1
Hamann F. and Persson S.E., 1989, ApJS 71, 931 =1989ApJS...71..931H
Jaschek C. et al., 1994, A&A 282, 911 =1994A&A...282..911J
Johansson S., 1977, MN 178, p17 =1977MNRAS.178p..17J
Johansson S., 1978, Phys. Scripta 18, 217
Meinel A.B. et al., 1969, Catalog of emission-lines in astrophysical
objects, Tucson
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(End) Patricia Bauer [CDS] 12-Jan-1996