TMTS delta Scuti stars Virtual Observatory Resource

Authors
  1. Lin J.
  2. Wang X.
  3. Mo J.
  4. Xi G.
  5. Filippenko A.V.
  6. Yan S.
  7. Brink T.G.
  8. Yang Y.,Wu C.
  9. Nemeth P.
  10. Li G.
  11. Guo F.
  12. Guo J.
  13. Cai Y.
  14. Xiong H.
  15. Zheng W.,Liu Q.
  16. Zhang J.
  17. Jiang X.
  18. Chen L.
  19. Xia Q.
  20. Peng H.
  21. Chen Z.
  22. Li W.,Lin W.
  23. Xiang D.
  24. Ma X.
  25. Liu J.
  26. Published by
    CDS
Abstract

Over the past few years, wide-field time-domain surveys like ZTF and OGLE have led to discoveries of various types of interesting short-period stellar variables, such as ultracompact eclipsing binary white dwarfs, rapidly rotating magnetised white dwarfs (WDs), transitional cataclysmic variables between hydrogen-rich and helium accretion, and blue large-amplitude pulsators (BLAPs), which greatly enrich our understandings of stellar physics under some extreme conditions. In this paper, we report the first-two-year discoveries of short-period variables (i.e., P<2hr) by the Tsinghua University-Ma Huateng Telescopes for Survey (TMTS). TMTS is a multi-tube telescope system with a field of view up to 18deg^2^, which started to monitor the LAMOST sky areas since 2020 and generated uninterrupted minute-cadence light curves for about ten million sources within 2 years. Adopting the Lomb-Scargle periodogram with period-dependent thresholds for the maximum powers, we identify over 1,100 sources that exhibit a variation period shorter than 2hr. Compiling the light curves with the Gaia magnitudes and colours, LAMOST spectral parameters, VSX classifications, and archived observations from other prevailing time-domain survey missions, we identified 1,076 as delta Scuti stars, which allows us study their populations and physical properties in the short-period regime. The other 31 sources include BLAPs, subdwarf B variables (sdBVs), pulsating WDs, ultracompact/short-period eclipsing/ellipsoidal binaries, cataclysmic variables below the period gap, etc., which are highly interesting and worthy of follow-up investigations.

Keywords
  1. surveys
  2. variable-stars
  3. photometry
  4. visible-astronomy
  5. effective-temperature
Bibliographic source Bibcode
2023MNRAS.523.2172L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/523/2172
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/523/2172
Document Object Identifer DOI
doi:10.26093/cds/vizier.75232172

Access

IVOA Table Access TAP
https://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/523/2172/dsct?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/523/2172/dsct?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/523/2172/dsct?

History

2023-06-06T09:20:22Z
Resource record created
2023-06-06T09:20:22Z
Created
2024-08-22T20:17:20Z
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