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 language | English |
|---|---|
| Pages (from-to) | 271-276 |
| Number of pages | 6 |
| Journal | Astronomy and Astrophysics |
| Volume | 487 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Aug 2008 |
Keywords
- binaries : close
- stars : novae, cataclysmic variables
- X-rays : binaries
- X-RAY SOURCES
- CATACLYSMIC VARIABLES
- GALACTIC PLANE
- SURVEY CATALOG