J/AZh/79/867 Abundances of HII regions in blue galaxies (Holovatyy+, 2002)
The chemical composition of HII regions in blue compact dwarf galaxies.
Holovatyy V.V., Melekh B.Ya.
<Astron. Zh. 79, 867 (2002)>
=2002AZh....79..867H 2002AZh....79..867H
=2002ARep...46..779H 2002ARep...46..779H
ADC_Keywords: Galaxies, optical ; H II regions ; Abundances
Abstract:
New expression for the ionization correction factors (ICF) are used to
find the nebular-gas compositions in HII regions in blue compact dwarf
galaxies (BCD). The abundances of He, N, O, Ne, S, and Ar in 41 HII
regions are determined.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
position.dat 63 41 HII region positions from Simbad
table1.dat 102 17 Empirical expression for determining the
compositions of nebular gas and values of
(A/H)calc/(A/H)mod for HII regions in BCD
galaxies
refs.dat 64 12 References from table1
table2.dat 110 41 Composition of HII regions in BCD galaxies,
found using ICFs in table1.dat
table3.dat 104 41 Composition of HII regions in BCD galaxies,
found using ICFs from grids of photoionization
models from Stasinska, 1990A&AS...83..501S 1990A&AS...83..501S
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See also:
J/A+AS/139/1 : HI in Byurakan blue compact galaxies (Thuan+, 1999)
J/ApJ/511/639 : Abundances in blue compact galaxies (Izotov+, 1999)
J/A+A/397/463 : The Hamburg/SAO Survey for BCGs. I. (Ugryumov+, 2003)
Byte-by-byte Description of file: position.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- HII Name of the HII region
16- 17 I2 h RAh Right ascension (J2000.0)
19- 20 I2 min RAm Right ascension (J2000.0)
22- 25 F4.1 s RAs Right ascension (J2000.0)
27 A1 --- DE- Declination sign (J2000.0)
28- 29 I2 deg DEd Declination (J2000.0)
31- 32 I2 arcmin DEm Declination (J2000.0)
34- 35 I2 arcsec DEs ? Declination (J2000.0)
37- 63 A27 --- Com Comments
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- TN Analytical expression designation (T1-T17)
5- 12 A8 --- r_TN Reference numbers, in file "refs.dat"
14- 96 A83 --- Expression Expression
99-102 F4.2 --- D(A/H) Calculated to model (A/H) abundance ratio
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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 --- RefNo Reference number
3 A1 --- --- [:]
5- 64 A60 --- Text Author and reference (bibcode)
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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- 2 I2 --- N Running number
4- 17 A14 --- HII Name of HII region
20- 24 F5.2 10-2 [He/H]T1/8 Abundance [He/H]*100 using T1 and
recombination coefficient from
Brocklehurst, 1972MNRAS.157..211B 1972MNRAS.157..211B
27- 31 F5.2 10-2 [He/H]T2/8 ? Abundance [He/H]*100 using T2 and
recombination coefficient from
Brocklehurst, 1972MNRAS.157..211B 1972MNRAS.157..211B
34- 38 F5.2 10-2 [He/H]T1/9 Abundance [He/H]*100 using T1 and
recombination coefficient from
Smits, 1996MNRAS.278..683S 1996MNRAS.278..683S
41- 45 F5.2 10-2 [He/H]T2/9 ? Abundance [He/H]*100 using T2 and
recombination coefficient from
Smits, 1996MNRAS.278..683S 1996MNRAS.278..683S
48- 51 F4.2 10-6 [N/H]T6 ? Abundance [N/H]*106 using T6
54- 58 F5.2 10-5 [O/H]T7 Abundance [O/H]*105 using T7
61- 65 F5.2 10-5 [O/H]T8 ? Abundance [O/H]*105 using T8
68- 72 F5.2 10-5 [O/H]T9 ? Abundance [O/H]*105 using T9
75- 79 F5.2 10-5 [O/H]T10 Abundance [O/H]*105 using T10
82- 86 F5.2 10-6 [Ne/H]T11 ? Abundance [Ne/H]*106 using T11
89- 92 F4.2 10-6 [S/H]T13 ? Abundance [S/H]*106 using T13
95- 98 F4.2 10-7 [Ar/H]T14 ? Abundance [Ar/H]*107 using T14
101-104 F4.2 10-7 [Ar/H]T16 ? Abundance [Ar/H]*107 using T16
107-110 F4.2 10-7 [Ar/H]T17 ? Abundance [Ar/H]*107 using T17
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- N Running number
4- 17 A14 --- HII Name of HII region
20- 23 F4.2 10-2 [He/H]8 ? Abundance [He/H]*100 using T1 and
recombination coefficient from
Brocklehurst, 1972MNRAS.157..211B 1972MNRAS.157..211B
26- 29 F4.2 10-2 e_[He/H]8 ? Uncertainty in [He/H]8
32- 35 F4.2 10-2 [He/H]9 ? Abundance [He/H]*100 using recombination
coefficient from Smits, 1996MNRAS.278..683S 1996MNRAS.278..683S
38- 41 F4.2 10-2 e_[He/H]9 ? Uncertainty in [He/H]9
44- 48 F5.2 10-5 [O/H] Abundance [O/H]*105, using G3, G4, G26 (1)
51- 54 F4.2 10-5 e_[O/H] Uncertainty in [O/H]
57- 60 F4.2 10-6 [N/H] ? Abundance [N/H]*106, using G6 (1)
63- 66 F4.2 10-6 e_[N/H] ? Uncertainty in [N/H]
69- 73 F5.2 10-6 [Ne/H] ? Abundance [Ne/H]*106, using G29 (1)
76- 79 F4.2 10-6 e_[Ne/H] ? Uncertainty in [Ne/H]
82- 85 F4.2 10-6 [S/H] ? Abundance [S/H]*106, using G30 (1)
88- 91 F4.2 10-6 e_[S/H] ? Uncertainty in [S/H]
94- 97 F4.2 10-7 [Ar/H] ? Abundance [Ar/H]*107,
using G10, G11, G31, G32 (1)
101-104 F4.2 10-7 e_[Ar/H] ? Uncertainty in [Ar/H]
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Note (1): G1-G32 are ionization correction factors (ICF) expression of table3
in Holovatyy and Melekh, Kinematica Fiz. Nebesnykh Tel (2002) (in press).
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(End) Veta Avedisova [INASAN] 01-Apr-2003