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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

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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

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