J/ApJS/98/659 Galactic PNe statistical distance scale (Zhang 1995)
A statistical distance scale for galactic planetary nebulae
Zhang C.Y.
<Astrophys. J. Suppl. Ser. 98, 659 (1995)>
=1995ApJS...98..659Z 1995ApJS...98..659Z
ADC_Keywords: Planetary nebulae ; Stars, distances
Keywords: distance scale - planetary nebulae: general
Description:
A statistical distance scale is proposed. It is based on the
correlation between the ionized mass and the radius and the
correlation between the radio continuum surface brightness temperature
and the nebular radius. The proposed statistical distance scale is an
average of the two distances obtained using the correlations. These
correlations, calibrated on the 132 planetary nebulae with
well-determined individual distances by Zhang, can reproduce not only
the average distance of a sample of Galactic Bulge planetary nebulae
exactly at the distance to the Galactic center, but also the expected
gaussian distribution of their distances around the Galactic center.
This new distance scale is applied to 647 Galactic planetary nebulae.
It is estimated that this distance scale can be accurate on average to
35%-50%. Our statistical distance scale is in good agreement with the
one recently proposed by Van de Steene and Zijlstra
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 78 134 Planetary nebulae with individually determined
distances
table1.tex 113 159 LaTeX version of table1
table3 72 647 Catalog of statistical distances of planetary
nebulae
table3.tex 100 675 LaTeX version of table3
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See also:
V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+ 1992)
Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Common name
9- 16 A8 --- PK Perek & Kohoutek name
18- 22 F5.2 kpc Dist Individually determined distance
24- 27 I4 mJy S5GHz 5 GHz (6 cm) radio flux density
29- 33 F5.1 arcsec Diam Diameter of nebula
35- 41 F7.2 K Tb Radio Brightness Temperature
43- 47 F5.3 pc Rad Radius of nebula
49- 54 E6.1 solMass Mi Ionized gas mass of nebula
56- 60 F5.2 kpc DMi Statistical distance derived from
mass-radius relation
62- 66 F5.2 kpc DTb Statistical distance from Tb - R relation
68- 72 F5.2 kpc Df Mean of DMi and DTb adopted as final result (1)
74- 78 F5.1 % Delta ? Fractional difference between Df and Dist
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Note (1): In Table 1 of the paper, Dm should read Df.
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Common name
11- 18 A8 --- PK PK name
19- 24 F6.1 mJy S5GHz 5 GHz (6 cm) radio flux density
26- 30 F5.1 arcsec Diam Diameter of nebula in arcsec
32- 34 I3 --- Ref References for the previous columns (1)
36- 42 F7.2 K Tb Radio Brightness Temperature
44- 48 F5.2 kpc DMi Statistical distance derived from
mass-radius relation
50- 54 F5.2 kpc DTb Statistical distance from Tb - R relation
56- 60 F5.2 kpc Df Mean of DMi and DTb adopted as final result (2)
62- 66 F5.2 kpc D(VSZ) ? Distance from Van de Steene and Zijstra (1995)
68- 72 F5.2 kpc D(CKS) ? Distance from Cahn, Kaler & Stanghellini (1992)
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Note (1): Reference numbers are:
1: Pottasch (1994A&A...289..261P 1994A&A...289..261P)
2: Aaquist & Kwok (1990A&AS...84..229A 1990A&AS...84..229A)
3: Zijlstra et al. (1989A&AS...79..329Z 1989A&AS...79..329Z)
4: Milne & Aller (1975A&A....38..183M 1975A&A....38..183M)
5: Milne (1979A&AS...36..227M 1979A&AS...36..227M)
6: Roelfsema et al. (1991A&A...251..611R 1991A&A...251..611R)
7: Cahn et al. (1992A&AS...94..399C 1992A&AS...94..399C)
8: Pottasch & Zijlstra (1994A&A...289..261P 1994A&A...289..261P)
Note (2): In Table 3 of the paper, Dm should read Df.
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Acknowledgements:
References:
Aaquist & Kwok, 1990 A&AS 84, 229 =1990A&AS...84..229A 1990A&AS...84..229A
Cahn et al., 1992 A&AS 94, 399 =1992A&AS...94..399C 1992A&AS...94..399C
Milne, 1979 A&AS 36, 227 =1979A&AS...36..227M 1979A&AS...36..227M
Milne & Aller, 1975 A&A 38, 183 =1975A&A....38..183M 1975A&A....38..183M
Pottasch, 1984 Planetary nebulae (Dordrecht: Reidel)
Pottasch & Zijlstra, 1994 A&A 289, 261 =1994A&A...289..261P 1994A&A...289..261P
Roelfsema et al., 1991 A&A 251, 611 =1991A&A...251..611R 1991A&A...251..611R
Van de Steene and Zijlstra, 1994, =1994A&AS..108..485V 1994A&AS..108..485V
Van de Steene and Zijlstra, 1995, A&A 293, 541 =1995A&A...293..541V 1995A&A...293..541V
Zijlstra et al., 1989 A&AS 79, 329 =1989A&AS...79..329Z 1989A&AS...79..329Z
(End) Patricia Bauer [CDS] 28-Aug-1996