Time-resolved optical observations of five cataclysmic variables detected by INTEGRAL - Astrophysics > Solar and Stellar AstrophysicsReportar como inadecuado




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Abstract: The ESA gamma-ray telescope, INTEGRAL, is detecting relatively moreintrinsically rare cataclysmic variables CVs than were found by surveys atlower energies. Specifically, a large fraction of the CVs that are INTEGRALsources consists of asynchronous polars and intermediate polars IPs. IPclassifications have been proposed for the majority of CVs discovered byINTEGRAL, but, in many cases, there is very little known about these systems.In order to address this, I present time-resolved optical data of five CVsdiscovered through INTEGRAL observations. The white dwarf spin modulation isdetected in high-speed photometry of three of the new CVs IGR J15094-6649, IGRJ16500-3307, and IGR J17195-4100, but two others XSS J12270-4859 and IGRJ16167-4957 show no evidence of magnetism, and should be consideredunclassified systems. Spectroscopic orbital period P orb measurements arealso given for IGR J15094-6649, IGR J16167-4957, IGR J16500-3307, and IGRJ17195-4100.



Autor: Magaretha L. Pretorius

Fuente: https://arxiv.org/







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