COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      NUMBER 704


                              Konkoly Observatory
                              Budapest
                              1972 August 2


           32 VIRGINIS: A PULSATING Am STAR


     Breger (1) suggested that pulsation would destroy the
 metallic-line characteristics.
     Bessel and Eggen (2) discovered HR 5491 as pulsating
 metallic-line star.
                           Observing with the 60cm
                           telescope and the Lallemand
                           photomultiplier of
                           Bologna Observatory the
                           Am (3) magnetic (4) star
                           32 Vir for 17 nights, we
  [FIGURE 1]
                           have found it always
                           pulsating not strictly
                           periodically with a period of
                           about 0.07d and an amplitude
                           ranging from 0.02m
                           to, 0.05m as it is shown in
                           the figures, A more detailed
                           paper will follow after
                           new observations in the
                           next spring.

 


Osservatorio astronomico     C. BARTOLINI
dell'Universita di Bologna   F. GRILLI
25 luglio 1972               G. PARMEGGIANI


References:

(1) Breger, M.S., Astrophys.J.Suppl., 18, 167 (1969) 
(2) Bessel, M.S., and Eggen, O.J., Publ.Astron.Soc.Pacific, 84,
                        72 (1972). [BIBCODE 1972PASP...84...72B ]
(3) Roman, N.G., Morgan, W.W., and Eggen, O.J., Astrophys.J. 107, 107,
                                       (1948). [BIBCODE 1948ApJ...107..107R ]
(4) Babcock, H.W., Astrophys.J. Suppl.,3, 141 (1958). [BIBCODE 1958ApJS....3..141B ]