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Hubble Space Telescope ultraviolet light curves reveal interesting properties of CC Sculptoris and RZ Leonis
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Szkody, Paula, Mukadam, Anjum S., Toloza, Odette, Gänsicke, B. T. (Boris T.), Dai, Zhibin, Pala, Anna F., Waagen, Elizabeth O., Godon, Patrick and Sion, Edward M. (2017) Hubble Space Telescope ultraviolet light curves reveal interesting properties of CC Sculptoris and RZ Leonis. The Astronomical Journal, 153 (3). 123. doi:10.3847/1538-3881/aa5c88 ISSN 0004-6256.
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Official URL: http://dx.doi.org/10.3847/1538-3881/aa5c88
Abstract
Time-tag ultraviolet data obtained on the Hubble Space Telescope in 2013 reveal interesting variability related to the white dwarf spin in the two cataclysmic variables RZ Leo and CC Scl. RZ Leo shows a period at 220 s and its harmonic at 110 s, thus identifying it as a likely Intermediate Polar (IP). The spin signal is not visible in a short single night of ground-based data in 2016, but the shorter exposures in that data set indicate a possible partial eclipse. The much larger UV amplitude of the spin signal in the known IP CC Scl allows the spin of 389 s, previously only seen at outburst, to be visible at quiescence. Spectra created from the peaks and troughs of the spin times indicate a hotter temperature of several thousand degrees during the peak phases, with multiple components contributing to the UV light.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QB Astronomy | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Library of Congress Subject Headings (LCSH): | Ultraviolet astronomy, Cataclysmic variable stars | ||||||
Journal or Publication Title: | The Astronomical Journal | ||||||
Publisher: | Institute of Physics Publishing, Inc. | ||||||
ISSN: | 0004-6256 | ||||||
Official Date: | 21 February 2017 | ||||||
Dates: |
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Volume: | 153 | ||||||
Number: | 3 | ||||||
Article Number: | 123 | ||||||
DOI: | 10.3847/1538-3881/aa5c88 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 10 March 2017 | ||||||
Date of first compliant Open Access: | 10 March 2017 | ||||||
Funder: | Space Telescope Science Institute (U.S.), National Science Foundation (U.S.) (NSF), Chile. Comisión Nacional de Investigación Científica y Tecnológica (CONICYT), Seventh Framework Programme (European Commission) (FP7), European Research Council (ERC), Zhongguo ke xue yuan. Shanghai sheng ming ke xue yan jiu yuan [Chinese Academy of Sciences. Shanghai Institutes for Biological Sciences] (SIBS), Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC) | ||||||
Grant number: | HST GO-12870 (Space Telescope Science Institute), GO-13807 (Space Telescope Science Institute), AST-1514737 (NSF), 72140362 (CONICYT), FP/2007-2013 (FP7), 320964 (ERC), 2016FB007 (NSFC) |
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