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J/AZh/74/853 Distances and physical parameters of PNe (Mal'kov, 1997)
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A self-consistent determination of the distances, physical parameters and
chemical composition for a large sample of galactic planetary nebulae: the
distances and parameters of central stars and the optical depth of envelopes.
Mal'kov Yu.F.
<Astron. Zh. 74, 853 (1997)>
=1997AZh....74..853M
=1997ARep...41..760M
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ADC_Keywords: Planetary nebulae; Effective temperatures
Abstract:
The distances and parameters of the central stars and the optical
depth of envelopes in the Lyman limits of neutral hydrogen and neutral
helium were determined in a self-consistent way for 170 galactic
planetary nebulae. The generalized energy-balance method was used
(Mal'kov, 1994KFNT...10e..35M).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 114 170 Input data for a self-consistent method
refs.dat 131 50 References to table1.dat
table2.dat 104 170 Distances and parameters of central stars
and optical depth of PN envelopes
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See also:
V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Planetary nebula (PN) name
12 I1 --- Region [1-3] Region of the Galaxy (1)
15- 20 F6.2 mW/m2 FHbeta ? Logarithm of H{beta} flux from PN
21 A1 --- u_FHbeta [:] Unreliable value of FHbeta
23- 26 F4.2 --- C(Hbeta) ? Interstellar extinction
29- 34 F6.4 --- HeI/Hbeta ? HeI4471/H{beta} relative intensity
35 A1 --- u_HeI/Hbeta [:] Unreliable value of HeI/H{beta}
36 A1 --- n_HeI/Hbeta [*] Adopted value of HeI/H{beta}
37- 42 F6.4 --- HeII/Hbeta ? HeII4686/Hbeta relative intensity
43 A1 --- u_HeII/Hbeta [:] Unreliable value of HeII/H{beta}
44 A1 --- n_HeII/Hbeta [*] Adopted value of HeII/H{beta}
47- 52 F6.4 --- 6300/3727 ? [OI]6300/[OII]3727 relative intensity
53 A1 --- u_6300/3727 [:] Unreliable value of 6300/3727
54 A1 --- n_6300/3727 [*] Adopted value of 6300/3727
57- 61 F5.1 --- rho ? Balance ratio
62 A1 --- u_rho [:] Unreliable value of rho
63- 65 A3 --- n_rho [OIU ] Spectral range, in which relative
intensities of lines excited by electron
collisions were summed (2)
67- 72 F6.2 arcsec Rad ? Angular radius of PN main structure
73 A1 --- n_Rad ? [ro] PN radius measurement
(r: radio, o: optical diameter)
75- 78 F4.1 km/s <Vexp> ? Mean expansion velocity
79 A1 --- n_<Vexp> [*] Adopted value of <Vexp>
83- 87 F5.2 mag mag ? V, B or U magnitude of PN nucleus
88 A1 --- u_mag [:] Unreliable value of mag
89 A1 --- n_mag ? [VBU ] Band of the magnitude
mainly from Acker et al., Cat. <V/84>
92- 97 F6.2 [mW/m2] FCont ? Logarithm of continuum flux
100-114 A15 --- r_Name References, in refs.dat file
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Note (1): Regions of the galaxy:
1 - Galactic disk
2 - Galactic bulge
3 - Galactic halo
Note (2): Spectral range:
O - optical
I - infrared
U - ultraviolet
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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- 2 I2 --- Ref Reference code
4- 22 A19 --- BibCode BibCode
24- 49 A26 --- Aut Auhtor's name
51-131 A81 --- Com Comments
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Planetary nebula (PN) name
12 I1 --- Region [1-3] Region of the Galaxy (1)
15- 19 F5.2 kpc Dist Distance of PN
23- 27 F5.1 K T(HI) Nucleus temperature from HI
30 A1 --- l_T(HeII) Limit flag on T(HeII)
31- 35 F5.1 K T(HeII) ? Nucleus temperature from HeII
38 A1 --- l_TGB Limit flag on TGB
39- 43 F5.1 K TGB ? Temperature from energy-balance method
47- 51 F5.1 K Teff Effective temperature
55- 58 F4.2 [cm/s2] logg Effective gravity
63- 66 I4 solLum Lum Luminosity
70- 74 F5.3 solMass Mass Mass
77- 82 I6 yr Age PN age
85 A1 --- l_tauH Limit flag on tauH
86- 92 F7.3 --- tauH PN optical depth within neutral hydrogen region
93 A1 --- n_tauH [*] * = adopted value of tauH
95 A1 --- l_tauHe Limit flag on tauHe
96-103 F8.4 --- tauHe PN optical depth within neutral helium region
104 A1 --- n_tauHe [*] * = adopted value of tauHe
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Note (1): Regions of the galaxy:
1 - Galactic disk
2 - Galactic bulge
3 - Galactic halo
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References:
Mal'kov, Chemical compositions 1998ARep...42..293M = 1998AZh....75..344M
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(End) Veta Avedisova [INASAN] 05-May-2000