Period analysis of the new Delta Scuti variable HD 93044

Details Period analysis of the new Delta Scuti variable HD 93044 Period analysis of the new Delta Scuti variable HD 93044

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...245..485l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 245, no. 2, May 1991, p. 485-489.

Astronomy and Astrophysics

Astrophysics

11

Scutum Constellation, Variable Stars, Periodic Variations, Stellar Oscillations, Stellar Spectrophotometry

Scientific paper

Using periodograms for unequally spaced data and convergent least squares, 177 differential photoelectric V band measurements of the newly discovered Delta-Scuti variable HD 93044 during three nights have been analyzed. After resampling the data in equal intervals to check the results using periodograms for equally spaced data, three frequencies: 11.38927, 2.1426 and 22.49097 cycle/d are identified in the data set. The frequencies of 11.38927 and 22.49097 cycle/d indicate that the observed variability of HD 93044 is due to radial pulsation of Delta-Scuti type in the fundamental and third overtone modes. The frequency of 2.1426 cycle/d is tentatively attributed to an atmospheric extinction effect.

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