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J/AZh/74/853         Distances and  physical parameters of PNe   (Mal'kov, 1997)

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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 114 170 Input data for a self-consistent method refs.dat 131 55 References to table1.dat table2.dat 104 170 Distances and parameters of central stars and optical depth of PN envelopes
See also: V/84 : Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (Acker+, 1992) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
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 Hβ 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/Hβ relative intensity 35 A1 --- u_HeI/Hbeta [:] Unreliable value of HeI/Hβ 36 A1 --- n_HeI/Hbeta [*] Adopted value of HeI/Hβ 37- 42 F6.4 --- HeII/Hbeta ? HeII4686/Hbeta relative intensity 43 A1 --- u_HeII/Hbeta [:] Unreliable value of HeII/Hβ 44 A1 --- n_HeII/Hbeta [*] Adopted value of HeII/Hβ 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
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
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference code 4- 22 A19 --- BibCode BibCode 24- 49 A26 --- Aut Auhtor's name 51-131 A81 --- Com Comments
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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
Note (1): Regions of the galaxy: 1 - Galactic disk 2 - Galactic bulge 3 - Galactic halo
References: Mal'kov, Chemical compositions 1998ARep...42..293M = 1998AZh....75..344M
(End) Veta Avedisova [INASAN] 05-May-2000
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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