ACV variables in the Zwicky Transient Facility Virtual Observatory Resource

Authors
  1. Faltova N.
  2. Kallova N.
  3. Prisegen M.
  4. Stanek P.
  5. Supikova J.
  6. Xia C.,Bernhard K.
  7. Hummerich S.
  8. Paunzen E.
  9. Published by
    CDS
Abstract

The present work presents a case study of known variables from the Zwicky Transient Facility (ZTF) survey, with the aim of investigating the survey's suitability for the detection and study of new ACV variables. Using suitable selection criteria based on the known characteristics of ACV variables, candidate ACV stars were selected from the ZTF Catalog of Periodic Variable Stars. All light curves were inspected in detail to select the most promising candidates. Where available, low-resolution spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) were employed to classify the stars on the MK system and confirm their status as mCP stars. We have identified 86 new promising ACV star candidates. 15 of these stars have LAMOST spectra available, which, in all cases, confirm them as classical mCP stars, which highlights the viability of our approach. We present astrophysical parameters for all sample stars, which can be sorted into four subgroups characterized by distinct light curve shapes. Anti-phase variations in different photometric passbands, in particular, is a unique characteristic of a subset of ACV stars readily usable for their identification. The availability of data in three different passbands (g, r, and i) is a major advantage of the ZTF survey. On the basis of our experience with other photometric surveys and the analysis of light curves, we conclude that the ZTF is well suited for the search for, and the analysis of, ACV variables, which, however, are not considered in the available ZTF variable star catalogues. Further work will be concerned with the development and refinement of a search algorithm to correctly identify these stars in ZTF data and, subsequently, in massive photometric time-series databases in general.

Keywords
  1. ap-stars
  2. peculiar-variable-stars
  3. variable-stars
  4. stellar-spectral-types
  5. morgan-keenan-classification
Bibliographic source Bibcode
2021A&A...656A.125F
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/656/A125
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/656/A125
Document Object Identifer DOI
doi:10.26093/cds/vizier.36560125

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/656/A125
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/656/A125
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/656/A125
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/A+A/656/A125/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/656/A125/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/656/A125/table1?

History

2021-12-10T09:11:25Z
Resource record created
2021-12-10T09:11:25Z
Created
2022-06-23T08:20:08Z
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