1RXS J062518.2+733433: A bright, soft intermediate polar*
1
Astrophysikalisches Institut Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany
2
Universitätssternwarte Göttingen, Geismarlandstraße 11, 37083 Göttingen, Germany
Corresponding author: A. Staude, astaude@aip.de
Received:
1
April
2003
Accepted:
7
May
2003
We present the results of 50 hours time-resolved R-band photometry of the ROSAT all-sky survey source 1RXS J062518.2+733433. The source was identified by Wei et al. ([CITE]) as a cataclysmic variable. Our photometry, performed in 10 nights between February 11, 2003, and March 21, 2003, reveals two stable periodicities at 19.7874 and 283.118 min, which are identified as probable spin and orbital periods of the binary. We therefore classify 1RXS J062518.2+733433 as an intermediate polar. Analysis of the RASS X-ray observations reveal a variability of 100% in the X-ray flux and a likely soft X-ray excess. The new IP thus joins the rare group of soft IPs with only four members so far.
Key words: stars: individual: 1RXS J062518.2+733433 / binaries: close / novae, cataclysmic variables
© ESO, 2003