Cartwheel galaxy nebular abundances Virtual Observatory Resource

Authors
  1. Zaragoza-Cardiel J.
  2. Gomez-Gonzalez V.M.A.
  3. Mayya D.
  4. Ramos-Larios G.
  5. Published by
    CDS
Abstract

We here present the results from a detailed analysis of nebular abundances of commonly observed ions in the collisional ring galaxy Cartwheel using the Very Large Telescope (VLT) Multi-Unit Spectroscopic Explorer (MUSE) dataset. The analysis includes 221 HII regions in the star-forming ring, in addition to 40 relatively fainter Ha-emitting regions in the spokes, disk and the inner ring. The ionic abundances of He, N, O and Fe are obtained using the direct method (DM) for 9, 20, 20, and 17 ring HII regions, respectively, where the S++ temperature-sensitive line is detected. For the rest of the regions, including all the nebulae between the inner and the outer ring, we obtained O abundances using the strong-line method (SLM). The ring regions have a median 12+log(O/H)=8.19+/-0.15, log(N/O)=-1.57+/-0.09 and log(Fe/O)=-2.24+/-0.09 using the DM. Within the range of O abundances seen in the Cartwheel, the N/O and Fe/O values decrease proportionately with increasing O, suggesting local enrichment of O without corresponding enrichment of primary N and Fe. The O abundances of the disk HII regions obtained using the SLM show a well-defined radial gradient. The mean O abundance of the ring HII regions is lower by ~0.1dex as compared to the extrapolation of the radial gradient. The observed trends suggest the preservation of the pre-collisional abundance gradient, displacement of most of the processed elements to the ring, as predicted by the recent simulation by Renaud et al. (2018MNRAS.473..585R), and post- collisional infall of metal-poor gas in the ring.

Keywords
  1. Galaxies
  2. H II regions
  3. Chemical abundances
  4. Optical astronomy
Bibliographic source Bibcode
2022MNRAS.514.1689Z
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/514/1689
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/514/1689

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/514/1689
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/514/1689
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/514/1689
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/514/1689/table?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/514/1689/table?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/514/1689/table?

History

2022-08-19T12:32:51Z
Resource record created
2022-08-19T12:32:51Z
Created
2022-11-13T17:33:38Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr