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A Burst of Star Formation in Galaxies of the M 81 Group

Published online by Cambridge University Press:  26 July 2016

B.P. Artamonov
B.P. Artamonov*
Affiliation:
Sternberg Astronomical Institute, University Av. 13, 119899 Moscow B-234, Russia

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UBV photographic plates of galaxies (resolution ∼ ) for the M 81 Group were obtained with the 1-metre Ritchey-Chrétien (RC) Zeiss telescope at Maidanak Observatory. Some plates show a resolution ∼ . Artamonov et al. (1990) have distinguished and measured positions of starlike objects in the central regions of M 82 (69 spots) and NGC 3077 (19 spots). We have measured the position of 120 blue starlike objects in NGC 2976. Image processing was carried out using a PC 286/386 with calibration using the data of Notni & Bronkalla, 1985; Bronkalla et al. 1992. The observed galaxies show active star formation which are related with intergalactic interaction. We have carried out UBV photometry of starlike objects in these galaxies. All objects emulate a population of young stars with different reddening. Figure 1 shows the two-colour plot of starlike objects in M 82 and the central regions of NGC 3077 (Price & Gullixson 1989). The colours of these objects lie along the line of reddening.

Type
Part Twelve: Properties of Nearby Galaxies
Information
Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 596 - 598
Copyright
Copyright © Kluwer 1994 

References

Artamonov, B.P., Novikov, S.B. and Shokin, Yu A., 1990. Preprint 16, Maidanak Obs. Sternberg Astron. Inst. Google Scholar
Artamonov, B.P., 1993. IAU Symp. 161. These proceedings.Google Scholar
Bronkalla, W., Notni, P. and Mutter, A.A.-R., 1992. Astron. Nachr., in press.Google Scholar
Notni, P. and Bronkalla, W., 1984. Astron. Nachr., 305, 157.Google Scholar
Price, J.S. and Gullixson, C.A., 1989. Astrophys. J., 337, 658.Google Scholar