Results of Photoelectric Observations of MWC 342

Details Results of Photoelectric Observations of MWC 342 Results of Photoelectric Observations of MWC 342

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ap.....45....8c&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 45, Issue 1, p. 8-14 (2002).

Astronomy and Astrophysics

Astrophysics

Scientific paper

The results of photoelectric observations of MWC 342 in Strömgren's system are given. The resulting light curves show a relatively rapid rise in brightness over 3-4 days and than a fading with a secondary minimum and maximum over 12-13 days. We note that in 1989 the star became bluer in the Paschen continuum and redder in the ultraviolet during fading, while in 1993 the star became bluer in the ultraviolet during fading but the star's color in the Paschen continuum remained virtually constant. Two possible mechanisms of the brightness variations of MWC 342 are considered: variable emission intensity of the gaseous envelope and an eclipse by the circumstellar dust medium. Qualitative estimates showed that the set of observed characteristics of MWC 342 cannot be explained by each of these mechanisms separately.

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