g and i bands LCs of Bernhard-2 star Virtual Observatory Resource

Authors
  1. Zhu W.
  2. Bernhard K.
  3. Dai F.
  4. Fang M.
  5. Zanazzi J.J.
  6. Zang W.
  7. Dong S.,Hambsch F.-J.
  8. Gan T.
  9. Wu Z.
  10. Poon M.
  11. Published by
    CDS
Abstract

KH 15D contains a circumbinary disk that is tilted relative to the orbital plane of the central binary. The precession of the disk and the orbital motion of the binary together produce rich phenomena in the photometric light curve. In this work, we present the discovery and preliminary analysis of two objects that resemble the key features of KH 15D from the Zwicky Transient Facility. These new objects, Bernhard-1 and Bernhard-2, show large-amplitude ( >1.5 mag), long-duration (more than tens of days), and periodic dimming events. A one-sided screen model is developed to model the photometric behavior of these objects, the physical interpretation of which is a tilted, warped circumbinary disk occulting the inner binary. Changes in the object light curves suggest potential precession periods over timescales longer than 10yr. Additional photometric and spectroscopic observations are encouraged to better understand the nature of these interesting systems.

Keywords
  1. infrared-photometry
  2. visible-astronomy
  3. broad-band-photometry
  4. variable-stars
  5. young-stellar-objects
Bibliographic source Bibcode
2022ApJ...933L..21Z
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/933/L21
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/933/L21

Access

IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2025-03-24T15:10:54Z
Resource record created
2025-03-24T15:10:54Z
Created
2025-04-01T12:52:45Z
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