Title: High-speed ultracam colorimetry of the subdwarf B star SDSS J171722.08+58055.8
Authors: Aerts, Conny ×
Jeffery, CS
Dhillon, VS
Marsh, TR
Groot, P #
Issue Date: 2006
Publisher: Institute of Theoretical Physics and Astronomy
Series Title: Baltic Astronomy vol:15 issue:2 pages:275-278
Abstract: We present high-speed multicolour photometry of the faint subdwarf B star SDSS J171722.08+58055.8 (m(B) = 16.7mag), which was recently discovered to be pulsating. The data were obtained during two consecutive nights in 2004 August using the three-channel photometer ULTRACAM attached to the 4.2 m William Herschel Telescope. We confirm the star to be oscillating and we refine the dominant frequency to 6.960 mHz. A second new frequency of 7.267 mHz was discovered. Both frequencies are significant in all three colors at level > 5 sigma and vary in phase in the three colors. We attempted mode identification for the strongest mode from its amplitude ratios but did not succeed.
ISSN: 1392-0049
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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