Solar siblings search with APOGEE and Gaia DR2 Virtual Observatory Resource

Authors
  1. Webb J.J.
  2. Price-Jones N.
  3. Bovy J.
  4. Portegies Zwart S.
  5. Hunt J.A.S.,Mackereth J.T.
  6. Leung H.W.
  7. Published by
    CDS
Abstract

We make use of APOGEE and Gaia data to identify stars that are consistent with being born in the same association or star cluster as the Sun. We limit our analysis to stars that match solar abundances within their uncertainties, as they could have formed from the same giant molecular cloud (GMC) as the Sun. We constrain the range of orbital actions that solar siblings can have with a suite of simulations of solar birth clusters evolved in static and time-dependent tidal fields. The static components of each galaxy model are the bulge, disc, and halo, while the various time-dependent components include a bar, spiral arms, and GMCs. In galaxy models without GMCs, simulated solar siblings all have J_R_<122kpc.km/s, 990<L_z_<1986kpc.km/s, and 0.15<J_z_<0.58kpc.km/s. Given the actions of stars in APOGEE and Gaia, we find 104 stars that fall within this range. One candidate in particular, Solar Sibling 1, has both chemistry and actions similar enough to the solar values that strong interactions with the bar or spiral arms are not required for it to be dynamically associated with the Sun. Adding GMCs to the potential can eject solar siblings out of the plane of the disc and increase their J_z_, resulting in a final candidate list of 296 stars. The entire suite of simulations indicate that solar siblings should have J_R_<122kpc.km/s, 353<L_z_<2110kpc.km/s, and J_z_<0.8kpc.km/s. Given these criteria, it is most likely that the association or cluster that the Sun was born in has reached dissolution and is not the commonly cited open cluster M67.

Keywords
  1. milky-way-galaxy
  2. astrometry
  3. stellar-distance
  4. proper-motions
  5. radial-velocity
  6. metallicity
  7. chemically-peculiar-stars
Bibliographic source Bibcode
2020MNRAS.494.2268W
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/494/2268
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/494/2268

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/494/2268
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/494/2268
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/494/2268
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/494/2268/catalog?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/494/2268/catalog?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/494/2268/catalog?

History

2023-07-28T14:31:25Z
Resource record created
2023-07-28T14:31:25Z
Created
2023-09-13T11:25:03Z
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