J/A+A/609/A102 Inner/outer HII regions: galaxy sample (Rodriguez-Baras+, 2018)
Inner and outer star forming regions over the disks of spiral galaxies.
I. Sample characterization.
Rodriguez-Baras M., Diaz A.I., Rosales-Ortega F.F., Sanchez S.F.
<Astron. Astrophys. 609, A102 (2018)>
=2018A&A...609A.102R 2018A&A...609A.102R (SIMBAD/NED BibCode)
ADC_Keywords: Spectroscopy ; H II regions ; Interstellar medium ;
Galaxies, optical ; Galaxies, spectra
Keywords: methods: data analysis - techniques: imaging spectroscopy -
galaxies: spirals - ISM: HII regions
Abstract:
Using integral field spectroscopy (IFS) observations we aim to perform
a systematic study and comparison of two inner and outer HII regions
samples. The spatial resolution of the IFS, the number of objects and
the homogeneity and coherence of the observations allow a complete
characterization of the main observational properties and differences
of the regions. We analyzed a sample of 725 inner HII regions and a
sample of 671 outer HII regions, all of them detected and extracted
from the observations of a sample of 263 nearby, isolated, spiral
galaxies observed by the CALIFA survey. We find that inner HII regions
show smaller equivalent widths, greater extinction and luminosities,
along with greater values of [NII] λ6583/Hα and
[OII] λ3727/[OIII] λ5007 emission-line ratios,
indicating higher metallicities and lower ionization parameters. Inner
regions have also redder colors and higher photometric and ionizing
masses, although Mion/Mphot is slightly higher for the outer regions.
This work shows important observational differences between inner and
outer HII regions in star forming galaxies not previously studied in
detail. These differences indicate that inner regions have more
evolved stellar populations and are in a later evolution state with
respect to outer regions, which goes in line with the inside-out
galaxy formation paradigm.
Description:
Physical properties for 263 isolated spiral galaxies, observed by the
CALIFA survey, are presented. These galaxies compose this work galaxy
sample. For each galaxy redshift, morphological type, inclination,
distance, effective radius, g and r SDSS magnitudes, absolute B
magnitude and total number of HII regions extracted in the galaxy are
given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 73 263 Physical properties for 263 galaxies
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See also:
J/A+A/559/A114 : Updated O3N2 and N2 abundance indicators (Marino+, 2013)
J/A+A/573/A59 : Gas kinematics in CALIFA survey (Garcia-Lorenzo+, 2015)
J/A+A/576/A135 : CALIFA DR2 (Garcia-Benito+, 2015)
J/A+A/581/A103 : CALIFA survey across the Hubble sequence (Gonzalez+, 2015)
J/A+A/582/A21 : Merging galaxies (mis)alignments (Barrera-Ballesteros+, 2015)
J/A+A/584/A87 : CALIFA sample SFR calibration (Catalan-Torrecilla+, 2015)
J/A+A/585/A47 : CALIFA color/metallicity gradients connections (Marino+, 2016)
J/A+A/587/A70 : CALIFA face-on spiral galaxies oxygen
(Sanchez-Menguiano+, 2016)
J/A+A/593/A114 : CALIFA space density distribution of galaxies
(Bekeraite+, 2016)
J/A+A/595/A62 : CALIFA galaxies O/H and N/O slopes (Perez-Montero+, 2016)
J/A+A/597/A48 : Stellar kinematics in CALIFA survey (Falcon-Barroso+, 2017)
J/A+A/598/A32 : 2D decomposition of CALIFA galaxies (Mendez-Abreu+, 2017)
J/A+A/604/A4 : CALIFA galaxies observational hints (Ruiz-Lara+, 2017)
J/ApJ/826/71 : Growth curves of CALIFA spiral galaxies
(Iglesias-Paramo+, 2016)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Name Galaxy name
25- 29 F5.3 --- z Redshift
31- 33 A3 --- Mtype Morphological type
35- 38 F4.1 --- Incl Inclination
40- 45 F6.2 Mpc Dist Distance
47- 51 F5.2 kpc Reff Effective radius
53- 57 F5.2 mag gmag g SDSS magnitude
59- 63 F5.2 mag rmag r SDSS magnitude
65- 70 F6.2 mag BMAG Absolute B magnitude
72- 73 I2 --- Nt Total number of HII regions extracted
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Acknowledgements:
Marina Rodriguez-Baras, mrodriguezbaras(at)gmail.com
(End) Marina Rodriguez-Baras [UAM, Spain], Patricia Vannier [CDS] 14-Nov-2017