The compact star-forming regions associated with the Herbig Ae/Be stars LK H-alpha 198 and LK H-alpha 234

Astronomy and Astrophysics – Astronomy

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Compact Galaxies, Herbig-Haro Objects, Star Formation, Stellar Spectra, A Stars, Astronomical Maps, B Stars, Color-Color Diagram, Electrophotometry, Light Curve, Tables (Data), Ultraviolet Photometry

Scientific paper

Photoelectric photometry and spectral classification are presented for 19 stars in the region of Lk H-alpha 198 and 35 stars in the region of Lk H-alpha 234. Interstellar extinction in compact star-forming region is compared with the CO emission map. It is found that the distance to the Lk H-alpha 198 region is 630 + or - 30 pc. The distance to the Lk H-alpha region is 1250 + or - 50 pc. The extensions of the regions are 2 pc and 10 pc for Lk H-alpha 198 and 234, respectively. Also, the total masses of the regions are found to be 800 solar masses for Lk H-alpha 198 and 2000 solar masses for Lk H-alpha 234. The light curve sections for the regions and results of polarimetry for the stars in the Lk H-alpha 234 region are given.

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