Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aj....126.1967g&link_type=abstract
The Astronomical Journal, Volume 126, Issue 4, pp. 1967-1970.
Astronomy and Astrophysics
Astronomy
2
Radio Emission Lines, Stars: Formation
Scientific paper
The spectrum of Cepheus A in the 51-->60A+ transition was observed 19 times during a 750 day interval beginning in 1993 using the Penticton 25.6 m diameter antenna. Two of the five spectral components exhibit large changes in intensity. The amplitude ratio of the lines at -3.8 and -4.2 km s-1 changed from 1.4 to 0.8 over 2 yr. Three spectra published by other authors between 1991 and 2000 confirm that these lines are indeed variable, although the variability does not follow the quasi linear trend inferred from spectra presented here.
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