4 papers
Variable stars in nearby galaxies. II. Population I and II Cepheids in Field A of IC 1613
E. Antonello, L. Mantegazza, D. Fugazza +1
The light curves of Cepheids and other variable stars in Field A of IC 1613, obtained with a CCD and no filter ( photometry), have been analyzed. It is possible to separate fir…
Variable stars in nearby galaxies. I. Search for Cepheids in Field A of IC 1613
E. Antonello, L. Mantegazza, D. Fugazza +2
The first results are presented of a four-year program dedicated to the CCD observations of Cepheids in the nearby galaxy IC 1613. Since the program was carried out with a relative…
Simultaneous intensive photometry and high resolution spectroscopy of delta Scuti stars. III. Mode identifications and physical calibrations in HD 2724
M. Bossi, L. Mantegazza, N. S. Nunez
On the basis of our new simultaneous photometry and spectroscopy (885 uvby differential measurements in 11 nights and 154 spectrograms of the FeII 4508 A region in 5 nights), we ca…
The Gamma Doradus variables, a new class of pulsating stars. The case of HD 224945
E. Poretti, C. Akan, M. Bossi +3
A multisite campaign involving five observatories allowed us to solve the light curve of the Gamma Doradus star HD 224945. The multiperiodic content, the high frequency term at 3.0…