J/A+A/623/A7 Oxygen abundance in disk galaxies (Zinchenko+, 2019)
Characterizing the radial oxygen abundance distribution in disk galaxies.
Zinchenko I.A., Just A., Pilyugin L.S., Lara-Lopez M.A.
<Astron. Astrophys. 623, A7 (2019)>
=2019A&A...623A...7Z 2019A&A...623A...7Z (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; H II regions ; Abundances ; Morphology
Keywords: galaxies: abundances - ISM: abundances - H II regions
Abstract:
We examine the possible dependence of the radial oxygen abundance
distribution on non-axisymmetrical structures (bar/spirals) and other
macroscopic parameters such as the mass, the optical radius R25, the
color g-r, and the surface brightness of the galaxy. A sample of disk
galaxies from the third data release of the Calar Alto Legacy Integral
Field Area Survey (CALIFA DR3) is considered. We adopted the Fourier
amplitude A2 of the surface brightness as a quantitative
characteristic of the strength of nonaxisymmetric structures in a
galactic disk, in addition to the commonly used morphologic division
for A, AB, and B types based on the Hubble classification. To
distinguish changes in local oxygen abundance caused by the
non-axisymmetrical structures, the multiparametric mass-metallicity
relation was constructed as a function of parameters such as the
bar/spiral pattern strength, the disk size, color index g-r in the
Sloan Digital Sky Survey (SDSS) bands, and central surface brightness
of the disk. The gas-phase oxygen abundance gradient is determined by
using the R calibration We find that there is no significant impact of
the non-axisymmetric structures such as a bar and/or spiral patterns
on the local oxygen abundance and radial oxygen abundance gradient of
disk galaxies. Galaxies with higher mass, however, exhibit flatter
oxygen abundance gradients in units of dex/kpc, but this effect is
significantly less prominent for the oxygen abundance gradients in
units of dex/R25 and almost disappears when the inner parts are
avoided (R>0.25R25). We show that the oxygen abundance in the central
part of the galaxy depends neither on the optical radius R25 nor on
the color g-r or the surface brightness of the galaxy. Instead,
outside the central part of the galaxy, the oxygen abundance increases
with g-r value and central surface brightness of the disk.
Description:
Adopted and derived properties of our target galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 94 66 Adopted and derived properties of our target galaxies
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See also:
J/A+A/594/A36 : CALIFA Survey DR3 list of galaxies (Sanchez+, 2016)
J/A+A/595/A62 : CALIFA galaxies O/H and N/O slopes (Perez-Montero+, 2016)
J/MNRAS/462/2715 : Oxygen abundance maps of CALIFA galaxies (Zinchenko+, 2016)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name
10- 14 F5.1 Mpc Dist Distance (1)
18- 22 A5 --- Type Morphological type (2)
24- 26 I3 deg PA Position angle of the major axis (3)
30- 33 F4.1 deg incl Inclination of the galaxy (3)
37- 42 F6.3 [Msun] logMass Logarithm of the stellar mass (2)
46- 50 F5.2 kpc R25 Optical radius R25
54- 58 F5.3 mag g-r Colour index (SDSS g-r)
62- 66 F5.3 [Lsun/pc2] logSigma0 Logarithm of the surface brightness
of the disk (L_sun/pc^2)
69- 73 F5.3 --- A2 Fourier amplitude A_2
75- 80 F6.3 [-] logO/H ?=- The oxygen abundance gradient for
0<R<R25 (in dex/R25 unit)
82- 87 F6.3 [-] logO/Hinn ?=- The oxygen abundance gradient for
0<R<0.25R25 (in dex/R25 unit)
89- 94 F6.3 [-] logO/Hout ?=- The oxygen abundance gradient for
0.25R25<R<R25 (in dex/R25 unit)
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Note (1): From NED, https://ned.ipac.caltech.edu/
Note (2): Walcher et al. (2014A&A...569A...1W 2014A&A...569A...1W).
Note (3): For NGC 1070 derived from Sersic profile.
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Acknowledgements:
Igor Zinchenko, zinchenko(at)mao.kiev.ua
(End) Patricia Vannier [CDS] 14-Feb-2019