J/A+A/403/659 Classification of WR planetary nebulae (Acker+, 2003)
Quantitative classification of WR nuclei of planetary nebulae.
Acker A., Neiner C.
<Astron. Astrophys. 403, 659 (2003)>
=2003A&A...403..659A 2003A&A...403..659A
ADC_Keywords: Planetary nebulae ; Stars, Wolf-Rayet ; Line Profiles
Keywords: planetary nebulae: general - stars: evolution -
stars: AGB and post-AGB - stars: Wolf-Rayet - line: profiles
Abstract:
We analyse 42 emission-line nuclei of Planetary Nebulae (PNe), in the
framework of a large spectrophotometric survey of [WC] nuclei of PNe
conducted since 1994, using low/medium resolution spectra obtained at
ESO and at OHP. We construct a grid of selected line-intensities
(normalized to C IV-5806Å=100) ordered by decreasing ionisation
potential going from 871 to 24eV. In this grid, the stars appear to
belong clearly to prominent O (hot [WO1-4] types) or C (cooler
[WC4-11] types) line-sequences, in agreement with the classification
of massive WR stars applied to Central Stars of Planetary Nebulae
(CSPNe) by Crowther et al. (1998MNRAS.296..367C 1998MNRAS.296..367C, CMB98).
We propose 20 selected line ratios and the FWHM of CIV and CIII lines
as classification diagnostics, which agree well with the 7 line ratios
and the FWHM proposed by CMB98.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
position.dat 80 121 PN positions, from Simbad
table4.dat 245 121 List of all known WC and weak emission-line
(wels) stars
refs.dat 120 39 References
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See also:
V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)
IV/24 : Catalogue of Galactic Planetary Nebulae (Kohoutek, 2001)
J/A+A/303/893 : Planetary nebulae with WR-type nuclei (Gorny+, 1995)
Byte-by-byte Description of file: position.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [PN G]
5- 14 A10 --- PNG PNG designation (see Cat. V/84)
20- 21 I2 h RAh Right ascension (J2000.0)
23- 24 I2 min RAm Right ascension (J2000.0)
26- 29 F4.1 s RAs Right ascension (J2000.0)
31 A1 --- DE- Declination sign (J2000.0)
32- 33 I2 deg DEd Declination (J2000.0)
35- 36 I2 arcmin DEm Declination (J2000.0)
38- 39 I2 arcsec DEs Declination (J2000.0)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- PNG Planetary nebula PNG designation
11 A1 --- n_PNG [S] Note on PNG (1)
12 A1 --- Note [*+] PNG (*) designation or name (+)
corrected (different of those indicated in
the on-line version)
13- 23 A11 --- Name Planetary nebula name
25- 36 A12 --- SpType Spectral type from this paper
37- 38 A2 --- n_SpType Note on SpType (2)
40- 47 A8 --- SpType1 Tylenda et al., 1992A&AS...95..337T 1992A&AS...95..337T,
spectral type
49- 59 A11 --- SpType3 Other spectral type
61 A1 --- --- [(]
62- 89 A28 --- r_SpType3 References for SpType3
92-123 A32 --- SpType4 Other spectral type
125 A1 --- --- [(]
126-139 A14 --- r_SpType4 References for SpType4
140-157 A18 --- SpType5 Other spectral type
159 A1 --- --- [(]
160-170 A11 --- r_SpType5 References for SpType5
172-183 A12 --- SpType6 Other spectral type
185 A1 --- --- [(]
186-200 A15 --- r_SpType6 References for SpType6
202-212 A11 --- SpType7 Other spectral type
214 A1 --- --- [(]
215-227 A13 --- r_SpType7 References for SpType7
229-237 A9 --- SpType8 Other spectral type
239 A1 --- --- [(]
240-245 A6 --- r_SpType8 References for SpType8
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Note (1): The PN labelled with 'S' belongs to the Sagittarius dwarf galaxy.
Note (2): Spectral classes marked with
*: classification based on observations obtained at OHP
(1993-2000, see Sect. 2).
*1: visual inspection on ``Pediscou'' plates, obtained at OHP
(tel. 1.93m), in June 1974 with an exposure time of 15 min.
*2: visual inspection on `electronic camera' plates, obtained at
OHP (tel. 1.93m), in 1961, by M. Chopinet (private com.).
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Ref Reference code
8- 26 A19 --- BibCode BibCode
28- 50 A23 --- Aut Author's name
51-130 A80 --- Com Comments
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History: 16-Sep-2003: two modifications in table4.dat
Acknowledgements: Agnes Acker
(End) Patricia Bauer [CDS] 16-May-2003