Milky Way mass model and rotation curve Virtual Observatory Resource

Authors
  1. McGaugh S.S.
  2. Published by
    CDS
Abstract

We discuss a model for the Milky Way obtained by fitting the observed terminal velocities with the radial acceleration relation. The resulting stellar surface density profile departs from a smooth exponential disk, having bumps and wiggles that correspond to massive spiral arms. These features are used to estimate the term for the logarithmic density gradient in the Jeans equation, which turn out to have exactly the right location and amplitude to reconcile the apparent discrepancy between the stellar rotation curve and that of the interstellar gas. This model also predicts a gradually declining rotation curve outside the solar circle with slope -1.7km/s/kpc, as subsequently observed.

Keywords
  1. astronomical-models
  2. milky-way-galaxy
  3. galaxy-rotation
Bibliographic source Bibcode
2019ApJ...885...87M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/885/87
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/885/87
Document Object Identifer DOI
doi:10.26093/cds/vizier.18850087

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/885/87
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/885/87
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/885/87
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2021-09-28T06:21:53Z
Resource record created
2021-09-28T06:21:53Z
Created
2022-03-15T08:00:47Z
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