Star formation in Milky Way analogues Virtual Observatory Resource

Authors
  1. Fraser-McKelvie A.
  2. Merrifield M.
  3. Aragon-Salamanca A.
  4. Published by
    CDS
Abstract

The Milky Way has been described as an anaemic spiral, but is its star formation rate (SFR) unusually low when compared to its peers? To answer this question, we define a sample of Milky Way analogues (MWAs) based on stringent cuts on the best literature estimates of non-transient structural features for the Milky Way. This selection yields only 176 galaxies from the whole of the SDSS DR7 spectroscopic sample which have morphological classifications in Galaxy Zoo 2, from which we infer SFRs from two separate indicators. The mean SFRs found are log(SFR_SED_/M_{sun}_yr^-1^)=0.53 with a standard deviation of 0.23dex from SED fits, and log(SFR_W4_/M_{sun}_yr^-1^)=0.68 with a standard deviation of 0.41dex from a mid-infrared calibration. The most recent estimate for the Milky Way's SFR of log(SFR_MW_/M_{sun}_yr^-1^)=0.22 fits well within 2{sigma} of these values, where {sigma} is the standard deviation of each of the SFR indicator distributions. We infer that the Milky Way, while being a galaxy with a somewhat low SFR, is not unusual when compared to similar galaxies.

Keywords
  1. galaxies
  2. photometry
  3. spectroscopy
  4. milky-way-galaxy
  5. visible-astronomy
  6. infrared-astronomy
Bibliographic source Bibcode
2019MNRAS.489.5030F
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/489/5030
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/489/5030
Document Object Identifer DOI
doi:10.26093/cds/vizier.74895030

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/489/5030
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/489/5030
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/489/5030
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).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/489/5030/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/489/5030/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/489/5030/table1?

History

2023-02-14T14:23:07Z
Resource record created
2023-02-14T14:23:07Z
Created
2024-08-20T20:13:11Z
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