J/A+A/318/256 Planetary nebulae properties (Gorny+ 1997)
Planetary nebulae morphologies, central star masses and nebular properties
Gorny S.K., Stasinska G., Tylenda R.
<Astron. Astrophys. 318, 256 (1997)>
=1997A&A...318..256G 1997A&A...318..256G (SIMBAD/NED BibCode)
ADC_Keywords: Planetary nebulae ; Abundances ; Morphology
Keywords: planetary nebulae: general - stars: AGB and post-AGB -
stars: fundamental parameters
Description:
We have constituted a sample of about 80 PN with defined morphologies
and well observed basic parameters (fluxes, angular radii, expansion
velocities and magnitudes of the central stars). For these PN, we have
derived the central star masses by comparing the observed set of
parameters with those predicted by a simple evolutionary model of a
PN, expanding at the same velocity as the observed one
. We have then examined the relations between the PN morphological
types and other properties, linked to the central star mass. Bipolar
PN are shown to have a wider distribution of central star masses than
the rest of PN, and shifted towards higher values. They lie closer to
the Galactic plane and tend to have larger N/O ratios. Point symmetric
PN, which have not been much studied so far, are found to constitute
an outstanding class. They show an almost perfect M*-vexp
correlation. They correspond to a rather short evolutionary stage of
PN. They lie, on average, further from the Galactic plane than bipolar
PN and tend to have lower N/O. Globally, PN with higher central star
masses are found closer to the Galactic plane, and the observed
relation between N/O and M* is roughly consistent with the
predictions from evolutionary models for AGB stars.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1 103 76 Planetary nebulae properties and derived
central stars masses, evolutionary ages and
distances
table3 79 98 Chemical abundances of planetary nebulae
--------------------------------------------------------------------------------
See also:
J/A+A/327/736 : Planetary nebulae properties (Stasinska+ 1997)
Byte-by-byte Description of file: table1
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- PNG PNG designation
14- 21 A8 --- Name Other Name
25- 26 A2 --- MType Morphological type (1)
28 A1 --- u_MType Uncertainty flag on morphological type
32- 35 F4.2 K log(THI) Logarithm of HI Zanstra temperature
38- 41 F4.2 solLum log(LHI) Logarithm of HI Zanstra luminosity
44- 48 F5.2 mag MagVis Absolute visual magnitude of the
central star
51- 55 F5.2 pc log(Rad) Logarithm of nebular radius
58- 62 F5.2 mW/m2/sr log(SuBr) Logarithm of nebular surface brightness
in H_beta
65- 69 F5.2 mW/m2/sr log(Sv) Logarithm of S_v parameter
72- 75 F4.1 kpc DistS Shklovsky distance
78 A1 --- l_Mass [>] Lower limit flag on central star's mass
79- 83 F5.3 solMass Mass Derived mass of the central star
86- 90 F5.3 solMass MassUp ? Upper limit to the central star's mass
(where existing, individual cases only)
93- 96 F4.1 10+3yr Age ? Derived evolutionary age
99-102 F4.1 kpc Dist ? Derived distance
--------------------------------------------------------------------------------
Note (1): Morphological type description:
e, E, EH: elliptical nebulae
B, BE: bipolar nebulae
P, PE: point symmetric nebulae
I: irregular nebulae
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- PNG PNG designation
14- 25 A12 --- Name Name
29- 30 A2 --- MType Morphological type (1)
32 A1 --- u_MType Uncertainty flag on morphological type
35- 38 F4.2 --- a(N/H) Nitrogen abundance in respect to hydrogen
log(N/H) + 12
41- 54 A14 --- r_a(N/H) References for N/H abundance (2)
57- 60 F4.2 --- a(O/H) Oxygen abundance in respect to hydrogen
log(O/H) + 12
63- 76 A14 --- r_a(O/H) References for O/H abundance (2)
--------------------------------------------------------------------------------
Note (1): Morphological type description:
e, E, EH: elliptical nebulae
B, BE: bipolar nebulae
P, PE: point symmetric nebulae
I: irregular nebulae
Note (2): This table is based on the references from
Maciel & Koppen (1994A&A...282..436M 1994A&A...282..436M) with the following updates:
ASHAW84 - Adams et al., 1984MNRAS.207..471A 1984MNRAS.207..471A
CPT87 - Clegg et al., 1987MNRAS.224..761C 1987MNRAS.224..761C
CCMF96 - Costa et al., 1996A&AS..116..249C 1996A&AS..116..249C
CFM93 - Costa et al., 1993A&A...276..184C 1993A&A...276..184C
CAK96 - Cuisinier et al., 1996A&A...307..215C 1996A&A...307..215C
KB94 - Kingsburgh & Barlow, 1994MNRAS.271..257K 1994MNRAS.271..257K
WBC93 - Walton et al., 1993IAUS..155..581W 1993IAUS..155..581W
P91 - Perinotto, 1991ApJS...76..687P 1991ApJS...76..687P
PRMG89 - Pena et al., 1989RMxAA..17...25P 1989RMxAA..17...25P
PRTM90 - Pena et al., 1990A&A...237..454P 1990A&A...237..454P
PTPD93 - Pena et al., 1993RMxAA..27..175P 1993RMxAA..27..175P
R91 - Ratag, 1991, thesis, University of Groningen
TP79 - Torres-Peimbert & Peimbert, 1979RMxAA...4..341T 1979RMxAA...4..341T
--------------------------------------------------------------------------------
(End) Patricia Bauer [CDS] 12-Aug-1996