J/A+A/327/736 Planetary nebulae properties (Stasinska+ 1997)
On the mass distribution of planetary nebulae central stars
Stasinska G., Gorny S.K., Tylenda R.
<Astron. Astrophys. 327, 736 (1997)>
=1997A&A...327..736S 1997A&A...327..736S (SIMBAD/NED BibCode)
ADC_Keywords: Planetary nebulae ; Abundances ; Morphology
Keywords: planetary nebulae: general - stars: AGB and post-AGB -
stars: white dwarfs - stars: fundamental parameters
Abstract:
We apply a method, described in Gorny et al. (1997,
Cat. J/A+A/318/256), to derive the masses of 125 central stars of
planetary nebulae (PN). This method is self-consistent and
distance-independent. It requires the knowledge of the nebular Hβ
fluxes, angular radii and expansion velocities, as well as the stellar
visual magnitudes. This method is based on a simple model for the
evolution of planetary nebulae, in which the central stars evolve
according to the theoretical models of Bloecker (1995,
Cat. J/A+A/299/755) and Schoenberner (1983ApJ...272..708S 1983ApJ...272..708S). The
results are dependent on the assumed total nebular mass. Nevertheless,
for any reasonable total nebular mass distribution, we find that the
range in planetary nebulae central star masses is very restricted:
more than 80% of the objects have a central star mass between 0.55 and
0.65M☉. We show how to convert, in this mass range, the observed
PN central star mass distribution into a zero-age post-AGB star mass
distribution.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 86 49 Planetary nebulae properties and derived central
stars masses, evolutionary ages and distances
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See also:
J/A+A/303/893 : Planetary nebulae with WR-type nuclei (Gorny+, 1995)
J/A+A/318/256 : Planetary nebulae properties (Gorny+ 1997)
J/A+A/299/755 : Stellar evolution. II. Post-AGB (Bloecker+, 1995)
Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 10 A10 --- PNG PNG (Cat. V/84) designation
12- 19 A8 --- Name Name
21- 22 A2 --- Mtype Morphological type (1)
23 A1 --- u_Mtype [:] Uncertainty flag on morphological type
25- 28 F4.2 [K] log(THI) logarithm of HI Zanstra temperature
30- 33 F4.2 [solLum] log(LHI) logarithm of HI Zanstra luminosity
35- 39 F5.2 mag Mv Central star absolute visual magnitude
41- 45 F5.2 [pc] log(Rad) logarithm of nebular radius
47- 51 F5.2 [mW/m2/sr] log(SuBr) logarithm of nebular surface brightness
in Hβ
53- 57 F5.2 [mW/m2/sr] log(Sv) logarithm of S_v parameter
59- 62 F4.1 kpc DistS Shklovsky distance
64 A1 --- l_Mass [>] Lower limit flag on central star's mass
65- 69 F5.3 solMass Mass Derived mass of the central star
71- 75 F5.3 solMass MassUp ? Upper limit to the central star's mass
(where existing, one case only)
77- 80 F4.1 10+3yr Age Derived evolutionary age
82- 85 F4.1 kpc Dist Derived distance
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Note (1): Morphological type description:
e,E,EH: elliptical nebulae
B,BE: bipolar nebulae
P,PE: point symmetric nebulae
I: irregular nebulae
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Acknowledgements: Slawomir K. Gorny
(End) Patricia Bauer [CDS] 01-Aug-1997