High-speed ultracam colorimetry of the subdwarf B star SDSS J171722.08+58055.8
UNSPECIFIED (2006) High-speed ultracam colorimetry of the subdwarf B star SDSS J171722.08+58055.8. In: 2nd Meeting on Hot Subdwarf Stars and Related Objects, Santa Cruz de la Palma, SPAIN, JUN 06-10, 2005. Published in: BALTIC ASTRONOMY, 15 (2). pp. 275-278.Full text not available from this repository.
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.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||Q Science > QB Astronomy|
|Journal or Publication Title:||BALTIC ASTRONOMY|
|Publisher:||INST THEORETICAL PHYSICS ASTRONOMY|
|Number of Pages:||4|
|Page Range:||pp. 275-278|
|Title of Event:||2nd Meeting on Hot Subdwarf Stars and Related Objects|
|Location of Event:||Santa Cruz de la Palma, SPAIN|
|Date(s) of Event:||JUN 06-10, 2005|
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