New Hα Emission Stars in Cep OB3 Region. A Rapid Brightness Variation of V 733 Cep

A search of emission stars has been done on the basis of digitized photographic plates received with the 40″ Schmidt telescope of Byurakan Observatory equipped with a 4° objective prism. Forty-six new emission stars are found in a small area around the known FU Ori type variable V 733 Cep. Emission...

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Veröffentlicht in:	Astrophysics 2014-12, Vol.57 (4), p.500-509
Hauptverfasser:	Melikian, N. D., Gomez, J., Karapetian, A. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Astrophysics and Astroparticles Astrophysics and Cosmology Brightness Brightness (Photometry) Emission H alpha line Observations Observations and Techniques Optical properties Photometry Physics Physics and Astronomy Prisms Schmidt telescopes Space Exploration and Astronautics Space Sciences (including Extraterrestrial Physics Stars Variable stars
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Zusammenfassung:	A search of emission stars has been done on the basis of digitized photographic plates received with the 40″ Schmidt telescope of Byurakan Observatory equipped with a 4° objective prism. Forty-six new emission stars are found in a small area around the known FU Ori type variable V 733 Cep. Emission stars on the J - H - H - K diagram are situated on or in the neighborhood of T Tau locus. V, R, I photometry for some of the emission stars is performed as well. Three new variable stars are found in the region. A rapid brightness variation is detected on V 733 Cep.
ISSN:	0571-7256 1573-8191
DOI:	10.1007/s10511-014-9353-6