J/AJ/147/131 Abundances of nearby late-type galaxies. I. Data (Pilyugin+, 2014)
The abundance properties of nearby late-type galaxies. I. The data.
Pilyugin L.S., Grebel E.K., Kniazev A.Y.
<Astron. J., 147, 131 (2014)>
=2014AJ....147..131P 2014AJ....147..131P
ADC_Keywords: Galaxies, nearby ; H II regions ; Abundances ; Morphology
Keywords: galaxies: abundances - galaxies: irregular - galaxies: ISM -
galaxies: spiral
Abstract:
We investigate the oxygen and nitrogen abundance distributions across
the optical disks of 130 nearby late-type galaxies using around 3740
published spectra of HII regions. We use these data in order to
provide homogeneous abundance determinations for all objects in the
sample, including HII regions in which not all of the usual diagnostic
lines were measured. Examining the relation between N and O abundances
in these galaxies we find that the abundances in their centers and at
their isophotal R25 disk radii follow the same relation. The
variation in N/H at a given O/H is around 0.3dex. We suggest that the
observed spread in N/H may be partly caused by the time delay between
N and O enrichment and the different star formation histories in
galaxies of different morphological types and dimensions. We study the
correlations between the abundance properties (central O and N
abundances, radial O and N gradients) of a galaxy and its
morphological type and dimension.
Description:
Our final sample includes 130 nearby late-type galaxies (Table1). We
have carried out an extensive search of the literature and compiled a
sample of measurements of HII regions in the nearby late-type
galaxies. We have searched for spectra of HII regions with the
requirement that they include the [OII]λ3727+λ3729,
[OIII]λ5007, [NII]λ6584, and
[SII]λ6717+λ6731 lines. Our list contains 3904 spectra
including 162 spectra of HII regions beyond the isophotal radius
R25.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 130 The adopted properties of our galaxies
table2.dat 97 130 The derived parameters of the radial oxygen and
nitrogen abundance distributions in galaxies
table3.dat 80 288 List of references for the emission line flux
measurements in the extragalactic HII regions
refs.dat 189 91 Other references
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See also:
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
J/ApJS/153/429 : SDSS strong emission line HII galaxies (Kniazev+, 2004)
J/MNRAS/424/2316 : Abundances in HII regions (Pilyugin+, 2012)
http://atlas.obs-hp.fr/hyperleda/ : HyperLeda database
http://www.sdss3.org/ : The SDSS-III Web site
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Galaxy name (1)
11- 15 A5 --- MType Morphological type from LEDA (VII/237)
16- 19 F4.1 --- TT Morphological type code from LEDA (VII/237)
21- 30 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000) (2)
32- 41 F10.6 deg DEdeg Declination in decimal degrees (J2000) (2)
43- 47 F5.2 arcmin R25a The isophotal radius (3)
48 A1 --- r_R25a Reference for R25; in refs.dat file
50- 52 I3 deg PA Position angle
54- 55 I2 deg i Inclination
57- 58 I2 --- r_i ? Reference for PA and i; in refs.dat file
60- 65 F6.2 Mpc Dist Distance
67- 68 I2 --- r_Dist Reference for Dist
70- 74 F5.2 kpc R25k The isophotal radius in kpc (4)
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Note (1): We have used the most widely used name for each galaxy. The galaxies
are listed in order of name category, with the following categories in
descending order: NGC=New General Catalogue, IC=Index Catalogue,
UGC=Uppsala General Catalog of Galaxies, PGC=Catalogue of Principal
Galaxies.
Note (2): From the NASA/IPAC Extragalactic Database
(NED, http://ned.ipac.caltech.edu/).
Note (3): Unless otherwise stated, the R25 values are taken from
de Vaucouleurs et al. (1991rc3..book.....D 1991rc3..book.....D).
Note (4): Estimated from the data in Columns R25a and Dist.
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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- 9 A9 --- Name Galaxy name
11- 14 F4.2 [-] [O/H] [7.5/9.0] Oxygen abundance at R0=0 (5)
16- 19 F4.2 [-] e_[O/H] Uncertainty in [O/H]
21- 26 F6.3 [-] C[O/H]1 [-0.9/0.3] O/H gradient normalized to the
disk's isophotal radius R25 (6)
28- 32 F5.3 [-] e_C[O/H]1 Uncertainty in C[O/H]1
34- 40 F7.4 [-] C[O/H]2 Oxygen abundance gradient expressed in terms
of dex/kpc
42- 47 F6.4 [-] e_C[O/H]2 Uncertainty in C[O/H]2
49- 53 F5.3 [-] s_[O/H] [0/0.1] Scatter of oxygen abundances around
the general radial oxygen abundance trend
55- 58 F4.2 [-] [N/H] [6.0/8.9]?=0 Nitrogen abundance at R0=0 (7)
60- 63 F4.2 [-] e_[N/H] Uncertainty in [N/H]
65- 70 F6.3 [-] C[N/H]1 N/H gradient normalized to the disk's
isophotal radius R25 (8)
72- 76 F5.3 [-] e_C[N/H]1 Uncertainty in C[N/H]1
78- 84 F7.4 [-] C[N/H]2 Nitrogen abundance expressed in terms
of dex/kpc
86- 91 F6.4 [-] e_C[N/H]2 Uncertainty in C[N/H]2
93- 97 F5.3 [-] s_[N/H] The scatter of nitrogen abundances around the
general radial nitrogen abundance trend
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Note (5): Extrapolated central 12+log(O/H)R0 oxygen abundance.
12+log(O/H)=12+log(O/H)R0+CO/H*(R/R25), where R/R25 is the
fractional radius (the galactocentric distance normalized to the disk's
isophotal radius R25) (Equation (5) in the paper).
Note (6): The slope of the oxygen abundance gradient expressed in terms of
dex/R25 (the coefficient CO/H in Equation (5)).
Note (7): Extrapolated central 12+log(N/H)R0 nitrogen abundance.
12+log(N/H)=12+log(N/H)R0+CN/H*(R/R25) (Equation (6) in the paper).
Note (8): The slope of the nitrogen abundance gradient expressed in terms of
dex/R25 (the coefficient CN/H in Equation (6)).
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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- 10 A10 --- Name Galaxy name
11- 14 A4 --- OName Other name
16- 34 A19 --- BibCode Bibliographic code
36- 59 A24 --- Aut Author's name
61- 64 A4 --- --- [Cat.]
66- 80 A15 --- Cat VizieR catalog designation
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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 A2 --- Ref Reference identifier
4- 22 A19 --- BibCode Bibliographic code
24- 49 A26 --- Aut Author's name
51-189 A139 --- Com Comments
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History:
From electronic version of the journal
(End) Sylvain Guehenneux [CDS] 26-Sep-2014