Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-17T23:24:19.159Z Has data issue: false hasContentIssue false
  • English
  • Français

A Very Active T Tauri Star in NGC 7129

Published online by Cambridge University Press:  12 April 2016

Evgeni Semkov
Evgeni Semkov*
Affiliation:
Institute of Astronomy, Bulgarian Academy of Sciences, 72 Tsarigradsko Shose, BG-1784 Sofia, Bulgaria

Extract

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.

The star forming region NGC 7129 was first studied by Herbig (1960), who discovered two bright (BD+65° 1637 and LkHα234) and some weaker Hα emission stars. Subsequent investigations in this region led to the detection of five Herbig-Haro objects (Strom et al. 1974, Gyulbudaghian et al. 1978, Eiroa et al. 1992) and one T Tauri star, V350 Cep (Gyulbudaghian & Sarkissian 1977). Some non-stable stars in NGC 7129 are surrounded by reflection and cometary nebulae.

Our Hα-emission survey (Semkov &: Tsvetkov 1986) revealed an interesting irregular variable star in the dark clouds near the emission nebulae. On objective prism plates the star shows very strong Hα-emission and was included in our list of such stars as No. 7. An identification chart and the coordinates can be found in Semkov (1993a). The observations reported here include long-time photographic photometry and CCD spectroscopic and photometric observations.

Type
Flares in T Tauri St ars
Information
International Astronomical Union Colloquium , Volume 151: Flares and Flashes , 1995 , pp. 223 - 226
Copyright
Copyright © Springer-Verlag 1995

References

Eiroa, C., Gomez de Castro, A.I., Miranda, L.F., 1992, A&AS 92, 721 Google Scholar
Gyulbudaghian, A.L., Sarkissian, R.A., 1977, Astr. Tsirk. 972, 5 Google Scholar
Gyulbudaghian, A.L., Glushkov, Yu.I., Denisyuk, E.K., 1978, ApJ 244, L137 Google Scholar
Herbig, G.H., 1960, ApJS 4, 337 Google Scholar
Herbig, G.H., 1962, Adv. in Astr. and Astrophys. 1, p. 47 Google Scholar
Racine, R. 1968, AJ 73, 233 Google Scholar
Semkov, E.H., Tsvetkov, M.K., 1986, in Star Clusters and Associations, Szecsenyi-Nagy, G. (ed.), Publ. Astr. Dep. Eotvos Univ., Budapest, 8, p. 141 Google Scholar
Semkov, E.H. 1993a, IBVS 3870 Google Scholar
Semkov, E.H. 1993b, IBVS 3919 Google Scholar
Strom, S.E., Grasdalen, G., Strom, K.M., 1974, ApJ 191, 111 CrossRefGoogle Scholar