SH{alpha}DE dwarf galaxies' mass and kinematics Virtual Observatory Resource

Authors
  1. Barat D.
  2. D'Eugenio F.
  3. Colless M.
  4. Sweet S.M.
  5. Groves B.
  6. Cortese L.
  7. Published by
    CDS
Abstract

The Study of H{alpha} from Dwarf Emissions (SH{alpha}DE) is a high spectral resolution (R=13500) H{alpha} integral field survey of 69 dwarf galaxies with stellar masses 10^6^<M_*_<10^9^M_{sun}_. The survey used FLAMES on the ESO Very Large Telescope. SH{alpha}DE is designed to study the kinematics and stellar populations of dwarf galaxies using consistent methods applied to massive galaxies and at matching level of detail, connecting these mass ranges in an unbiased way. In this paper, we set out the science goals of SH{alpha}DE, describe the sample properties, outline the data reduction, and analysis processes. We investigate the logM_*_-logS_0.5_ mass-kinematics scaling relation, which has previously shown potential for combining galaxies of all morphologies in a single scaling relation. We extend the scaling relation from massive galaxies to dwarf galaxies, demonstrating this relation is linear down to a stellar mass of M_*_~10^8.6^M_{sun}_. Below this limit, the kinematics of galaxies inside one effective radius appears to be dominated by the internal velocity dispersion limit of the H{alpha}-emitting gas, giving a bend in the logM_{*}_-logS_0.5_ relation. Replacing stellar mass with total baryonic mass using gas mass estimate reduces the severity but does not remove the linearity limit of the scaling relation. An extrapolation to estimate the galaxies' dark matter halo masses, yields a logM_h_-logS_0.5_ scaling relation that is free of any bend, has reduced curvature over the whole mass range, and brings galaxies of all masses and morphologies on to the virial relation.

Keywords
  1. dwarf-galaxies
  2. redshifted
  3. galaxy-radii
  4. galaxy-kinematics
  5. stellar-masses
  6. visible-astronomy
  7. spectroscopy
Bibliographic source Bibcode
2020MNRAS.498.5885B
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/498/5885
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/498/5885
Document Object Identifer DOI
doi:10.26093/cds/vizier.74985885

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/498/5885
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/498/5885
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/498/5885
IVOA Table Access TAP
http://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/498/5885/tablea1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/498/5885/tablea1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/498/5885/tablea1?

History

2023-11-06T10:03:35Z
Resource record created
2023-11-06T10:03:35Z
Created
2024-08-21T20:16:05Z
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