7 papers
Mode detection from line-profile variations in Delta Scuti stars
L. Mantegazza
The phenomenology associated with line profile variations in delta Scuti stars is reviewed. The three main techniques adopted to detect pulsation modes, i.e., the pixel-by-pixel an…
Simultaneous intensive photometry and high resolution spectroscopy of delta Scuti stars IV. An improved picture of the pulsational behaviour of X Caeli
Luciano Mantegazza, Filippo M. Zerbi, Alberto Sacchi
The delta Scuti star X Caeli has been the target of a simultaneous photometric (14 consecutive nights) and spectroscopic campaign (8 consecutive nigths). From the analysis of light…
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…
Optical observations of the black hole candidate XTE J1550-564 during the Sep/Oct 1998 outburst
C. Sanchez-Fernandez, A. J. Castro-Tirado, H. W. Duerbeck +11
We report here optical observations during the September/October 1998 outburst of the black hole candidate XTE J1550-564. CCD photometry was obtained for the optical counterpart wi…
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…