RXTE determination of the intermediate polar status of XSS J00564+4548, IGR J17195-4100, and XSS J12270-4859

O. W. Butters*, A. J. Norton, P. Hakala, K. Mukai, E. J. Barlow

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

28 Citations (Scopus)

Abstract

Aims. We determine the nature of the intermediate polar candidates XSS J00564+4548, IGR J17195-4100, and XSS J12270-4859.

Methods. Pointed RXTE observations searched for intermediate polar characteristics in these candidate systems.

Results. XSS J00564+4548 exhibits a period of 465.68 +/- 0.07 s, which we interpret as the spin period, an energy dependent modulation depth, and a spectrum that is fit by a 22 keV photoelectrically absorbed bremsstrahlung with an iron line profile. IGR J17195-4100 shows several candidate periodicities and a spectrum that is fit by a power law with an iron line. XSS J12270-4859 exhibits a candidate spin period of 859.57 +/- 0.64 s and a spectrum that is fit by a power law with no evidence of an iron line.

Conclusions. XSS J00564+4548 is confirmed to be an intermediate polar. IGR J17195-4100 and XSS J12270-4859 both show some properties of intermediate polars, but cannot be confirmed as definite members of the class here.

Original languageEnglish
Pages (from-to)271-276
Number of pages6
JournalAstronomy and Astrophysics
Volume487
Issue number1
DOIs
Publication statusPublished - Aug 2008

Keywords

  • binaries : close
  • stars : novae, cataclysmic variables
  • X-rays : binaries
  • X-RAY SOURCES
  • CATACLYSMIC VARIABLES
  • GALACTIC PLANE
  • SURVEY CATALOG

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