COMMISSION 27 OF THE I. A. U.
          INFORMATION BULLETIN ON VARIABLE STARS
                       NUMBER 130



                                              Konkoly Observatory
                                              Budapest
                                              5 April 1966

          EMISSION LINES IN THE FLARE STAR YZ CMI


     This star has displayed flare activity in 1943 (Schneller, 1960)
in 1958 (Roques, 1961), and recently last month (Andrews, 1966), when
three flares of about 1 magn. were detected between February 21 and
23 during only 8 hours of monitoring. According to L.H. Solomon (1966)
radio-optical observations did not reveal any burst larger than 0.4mag
between February 26 and March 1 inclusive, during 20 hours of 
observation. Two spectra of the star were obtained at Asiago on 
February 27, 1966 at 20h35m U.T. and 21h55m U.T. (exposure 55m and
40m respectively) and another one on March 13, 1966, 22h14m U.T.
On the first two spectra, taken with the newtonian spectrograph with
dispersion of 280 A/mm at H-gamma on Kodak 103aO plates, emission lines
of H-beta, H-gamma, H-delta, H-epsilon, H8 and Ca II 3933A have been identified
on a fairly strong continuum. Other features appear in emission, but He II
4686 is absent. The spectrum in March was taken with the Cassegrain
spectrograph with 70 A/mm at H-gamma on Kodak 103aF emulsion. With
two hours of exposure, only the H-alpha region has been recorded and a
fairly strong H-alpha emission appears over an intense continuum. Two
Schmidt plates taken March 13d22h01m and 14d19h21m U. T., 1966, do
not show any variation in the photographic magnitude of the variable.

Astrophysical Observatory, Asiago
March 29, 1966

	                    G. CHINCARINI
                            A. MAMMANO
References

Andrews A. D.: I. A. U. Circular No. 1951, 1966.
Roques P. E.:  Ap. J. 133, 914, 1961 [BIBCODE 1961ApJ...133..914R ]
Schneller H.:  G. u. Literatur Ver. Sterne, Bd. V, 146, 1960.
Solomon L. H.: I. A. U. Circular No. 1952, 1966.