COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2351

                                    Konkoly Observatory
                                    Budapest
                                    15 June 1983

                                    HU ISSN 0374-0676




       HD 7119: A PROBABLE NEW PULSATING DELTA DELPHINI STAR





  The mutual exclusion between pulsation and metallicity for A and F main
sequence stars seems to be well established. For the giant domain (class IV
and III) the scenario is more complex: the relation between metallicity and
pulsation is depending on the temperature, in the sense that the evolved
Am stars, in the blue side, do not show any photometric variability (Garrido,
1980), while in the red side Kurtz (1979) finds a few variable Delta Delphini
stars.
  With the aim to throw light on this subject, we decided to perform an
extensive photometric survey of Delta Del stars. The plan is to observe for
at least two nights a sufficient number of objects included in the list of
the sure Delta Del stars, kindly furnished by M. Jaschek, and to infer some
statistical correlations as metallicity-pulsation, rotation-pulsation and so
on.
  In the framework of this research we found the probable variability of
HD 7119.

                            [FIGURE 1]

  We observed HD 7119, classified as Delta Del star by Cowley et al. (1965)
and confirmed by M. Jaschek (1982), during JD 45307, in V color. (For 
instrumental equipment and the reduction procedure, see Bossi et al. 1970). 
Comparison and check stars were HD 7615 and HD 7745 A.
  Figure 1a,b shows the comparison minus variable (c-v) and the comparison
minus check (c-c1) light curves, respectively. Each point is the mean of
about six individual observations and the bars represent two standard errors.
  The understanding of the pulsational characteristics of HD 7119 requests
much more study.





       M. BOSSI, G. GUERRERO, L. MANTEGAZZA AND M. SCARDIA

         Observatorio Astronomico di Milano-Merate
         via E. Bianchi 46-22055 Merate-Como-Italy





References:

Bossi, M., Guerrero, G. and Mantegazza, L.: Astron. Astrophys. Suppl.
  29, 327, 1970 [BIBCODE 1977A&AS...29..327B ]
Cowley, A.P. and Cowley, C.R.: PASP 77, 184, 1965  [BIBCODE 1965PASP...77..184C ]
Garrido, R., Lopez de Coca, P., Quintana, J.M., Rolland, A. and Saez, M.:
  Astron. Astrophys. 83, 114, 1980 [BIBCODE 1980A&A....83..114G ]
Kurtz, D.W.: MNRAS 189, 1, 1979 [BIBCODE 1979MNRAS.189....1K ]
Jaschek, M.: private communication, 1982