HII regions in NGC 628 and NGC 6946

DOI

We present here two HII region catalogues with azimuthal resolution for the two grand design galaxies NGC 628 and NGC 6946. With the help of these catalogues, we study several properties of the star-forming processes occurring in spiral galaxies. We obtained direct imaging in the narrow-band filters centred at H{alpha}, H{beta}, [OII]{lambda}3727, and [OIII]{lambda}{lambda}4959, 5007 and their respective continua. After the calibration and correction of the data, we obtained for each HII region the de-reddened fluxes in the aforementioned lines, the size, the H{alpha} equivalent width, and, using two different empirical calibrations, the metallicity. Employing a method based on the Delaunay triangulation, a two-dimensional (2D) representation of the metallicity was obtained.

Cone search capability for table J/A+A/545/A43/ngc628 (NGC 628 HII regions data)

Cone search capability for table J/A+A/545/A43/ngc6946 (NGC 6946 HII regions data)

Identifier
DOI http://doi.org/10.26093/cds/vizier.35450043
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/545/A43
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/545/A43
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/545/A43
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/545/A43
Provenance
Creator Cedres B.; Cepa J.; Bongiovanni A.; Castaneda H.; Sanchez-Portal M.,Tomita A.
Publisher CDS
Publication Year 2012
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; Interdisciplinary Astronomy; Interstellar medium; Natural Sciences; Physics