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Title: Hubble Space Telescope Ultraviolet Light Curves Reveal Interesting Properties of CC Sculptoris and RZ Leonis

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.

Authors:
;  [1]; ; ;  [2];  [3];  [4]; ;  [5]
  1. Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195 (United States)
  2. Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom)
  3. Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216 (China)
  4. AAVSO, 48 Bay State Rd, Cambridge, MA 02138 (United States)
  5. Department of Astrophysics and Planetary Science, Villanova University, Villanova, PA 19085 (United States)
Publication Date:
OSTI Identifier:
22663759
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (Online); Journal Volume: 153; Journal Issue: 3; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DIAGRAMS; ECLIPSE; HARMONICS; NOVAE; SPACE; SPIN; TELESCOPES; ULTRAVIOLET RADIATION; VISIBLE RADIATION; WHITE DWARF STARS

Citation Formats

Szkody, Paula, Mukadam, Anjum S., Toloza, Odette, Gänsicke, Boris T., Pala, Anna F., Dai, Zhibin, Waagen, Elizabeth O., Godon, Patrick, and Sion, Edward M., E-mail: szkody@astro.washington.edu. Hubble Space Telescope Ultraviolet Light Curves Reveal Interesting Properties of CC Sculptoris and RZ Leonis. United States: N. p., 2017. Web. doi:10.3847/1538-3881/AA5C88.
Szkody, Paula, Mukadam, Anjum S., Toloza, Odette, Gänsicke, Boris T., Pala, Anna F., Dai, Zhibin, Waagen, Elizabeth O., Godon, Patrick, & Sion, Edward M., E-mail: szkody@astro.washington.edu. Hubble Space Telescope Ultraviolet Light Curves Reveal Interesting Properties of CC Sculptoris and RZ Leonis. United States. doi:10.3847/1538-3881/AA5C88.
Szkody, Paula, Mukadam, Anjum S., Toloza, Odette, Gänsicke, Boris T., Pala, Anna F., Dai, Zhibin, Waagen, Elizabeth O., Godon, Patrick, and Sion, Edward M., E-mail: szkody@astro.washington.edu. Wed . "Hubble Space Telescope Ultraviolet Light Curves Reveal Interesting Properties of CC Sculptoris and RZ Leonis". United States. doi:10.3847/1538-3881/AA5C88.
@article{osti_22663759,
title = {Hubble Space Telescope Ultraviolet Light Curves Reveal Interesting Properties of CC Sculptoris and RZ Leonis},
author = {Szkody, Paula and Mukadam, Anjum S. and Toloza, Odette and Gänsicke, Boris T. and Pala, Anna F. and Dai, Zhibin and Waagen, Elizabeth O. and Godon, Patrick and Sion, Edward M., E-mail: szkody@astro.washington.edu},
abstractNote = {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.},
doi = {10.3847/1538-3881/AA5C88},
journal = {Astronomical Journal (Online)},
number = 3,
volume = 153,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}