Massive galaxies environmental density Virtual Observatory Resource

Authors
  1. Bait O.
  2. Barway S.
  3. Wadadekar Y.
  4. Published by
    CDS
Abstract

Using multiwavelength data, from ultraviolet to optical to near-infrared to mid-infrared, for ~6000 galaxies in the local Universe, we study the dependence of star formation on the morphological T-types for massive galaxies (logM*/M_{sun}_>=10). We find that, early-type spirals (Sa-Sbc) and S0s predominate in the green valley, which is a transition zone between the star forming and quenched regions. Within the early-type spirals, as we move from Sa to Sbc spirals the fraction of green valley and quenched galaxies decreases, indicating the important role of the bulge in the quenching of galaxies. The fraction of early-type spirals decreases as we enter the green valley from the blue cloud, which coincides with the increase in the fraction of S0s. These points towards the morphological transformation of early-type spiral galaxies into S0s, which can happen due to environmental effects such as ram-pressure stripping, galaxy harassment or tidal interactions. We also find a second population of S0s that are actively star forming and are present in all environments. Since morphological T-type, specific star formation rate (sSFR), and environmental density are all correlated with each other, we compute the partial correlation coefficient for each pair of parameters while keeping the third parameter as a control variable. We find that morphology most strongly correlates with sSFR, independent of the environment, while the other two correlations (morphology-density and sSFR-environment) are weaker. Thus, we conclude that, for massive galaxies in the local Universe, the physical processes that shape their morphology are also the ones that determine their star-forming state.

Keywords
  1. galaxies
  2. redshifted
  3. galaxy-classification-systems
Bibliographic source Bibcode
2017MNRAS.471.2687B
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/471/2687
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/471/2687
Document Object Identifer DOI
doi:10.26093/cds/vizier.74712687

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/471/2687
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/471/2687
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/471/2687
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/471/2687/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/471/2687/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/471/2687/table2?

History

2020-07-22T12:46:03Z
Resource record created
2020-07-22T12:46:03Z
Created
2024-08-17T20:20:22Z
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