Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-12-01T01:59:44.430Z Has data issue: false hasContentIssue false
  • English
  • Français

Long-term photometric observations in the field of the star formation region NGC7129

Published online by Cambridge University Press:  16 July 2018

Evgeni Semkov ,
Stoyanka Peneva ,
Sunay Ibryamov  and
Asen Mutafov
Evgeni Semkov
Affiliation:
Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria email: [email protected]
Stoyanka Peneva
Affiliation:
Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria email: [email protected]
Sunay Ibryamov
Affiliation:
Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria email: [email protected] Department of Theoretical and Applied Physics, University of Shumen, Shumen, Bulgaria
Asen Mutafov
Affiliation:
Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, Sofia, Bulgaria email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present results from long-term optical photometric observations of the Pre-Main Sequence (PMS) stars, located in the star formation region around the bright nebula NGC 7129. Using the long-term light curves and spectroscopic data, we tried to classify the PMS objects in the field and to define the reasons for the observed brightness variations. Our main goal is to explore the known PMS stars and discover new, young, variable stars. The new variable PMS star 2MASS J21403576+6635000 exhibits unusual brightness variations for very short time intervals (few minutes or hours) with comparatively large amplitudes (ΔI = 2.65 mag).

Keywords

Stars: pre-main-sequencestars: variables: T TauriISM: Herbig-Haro objects
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S336: Astrophysical Masers: Unlocking the Mysteries of the Universe , September 2017 , pp. 287 - 288
Copyright
Copyright © International Astronomical Union 2018 

References

Hartigan, P. & Lada, C. J., 1985, ApJS, 59, 383Google Scholar
Ibryamov, S., Semkov, E., & Peneva, S., 2015, PASA, 32, e021Google Scholar
Kun, M., Balog, Z., Kenyon, S. J., Mamajek, E. E., & Gutermuth, R. A., 2009, ApJS, 185, 451Google Scholar
Magakian, T. Yu. & Movsessian, T. A., 1997, Astr. Rep., 41, 483Google Scholar
Miranda, L. F., Eiroa, C., & Gomez de Castro, A. I., 1993, A&A, 271, 564Google Scholar
Semkov, E. H., Peneva, S. P., Munari, U., Milani, A., & Valisa, P., 2010, A&A, 523, L3Google Scholar
Semkov, E. H., Peneva, S. P., Munari, U. et al., 2013, A&A, 556, A60Google Scholar
Semkov, E. H., 2006, Bulg. Astr. J., 8, 81Google Scholar