Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

XMM-Newton observations of the dwarf nova YZ Cnc in quiescence

Tools
- Tools
+ Tools

Hakala, P., Ramsay, G., Wheatley, P. J., Harlaftis, E. T. and Papadimitriou, C. (2004) XMM-Newton observations of the dwarf nova YZ Cnc in quiescence. Astronomy and Astrophysics, Volume 420 (Number 1). pp. 273-281. doi:10.1051/0004-6361:20035843

An open access version can be found in:
  • ArXiv
Official URL: http://dx.doi.org/10.1051/0004-6361:20035843

Request Changes to record.

Abstract

We present results from the XMM-Newton observations of the dwarf nova YZ Cnc in a quiescent state. We have performed a detailed time series analysis of the resulting light curves. Unusually, we do not detect any orbital modulation in the UV, with only marginal evidence for X-ray modulation on this period. Although there are peaks in the X-ray periodograms at periods less than 5000 s, we attribute them to red noise effects and assign significance to them using a novel approach. The variability in the UV and optical bands can also be modelled as a result of aperiodic variability (red noise) in the system. There is evidence that the UV and X-ray fluxes are anti-correlated with a time delay of about 100 s, with the UV lagging behind the X-ray emission. This anti-correlation is intriguing, but is only present on two occasions lasting several 1000 s each. The X-ray spectrum shows similar emission features to other dwarf novae and is well fitted using a multi-temperature emission model. We measure a relatively high X-ray luminosity of ${\sim}1.4\times 10^{32}$ ergs/s, although this is consistent with a low binary inclination. Finally, we find evidence for a possible -1200 km s -1 blue shift in the fitted Fe K line energies, possibly indicating the presence of an outflow in this low inclination system.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Journal or Publication Title: Astronomy and Astrophysics
Publisher: EDP Sciences
ISSN: 0004-6361
Official Date: 2004
Dates:
DateEvent
2004UNSPECIFIED
Volume: Volume 420
Number: Number 1
Page Range: pp. 273-281
DOI: 10.1051/0004-6361:20035843
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Open Access Version:
  • ArXiv

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item
twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us