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Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2011

Virtual Observatory based identification of AX J194939+2631 as a new cataclysmic variable

Résumé

We report the discovery of a new cataclysmic variable (CV) among unidentified objects from the ASCA Galactic Plane Survey made using the Virtual Observatory data mining. First, we identified AX J194939+2631 with IPHAS J194938.39+263149.2, the only prominent Halpha emitter among 400 sources in a 1 arcmin field of the IPHAS survey, then secured as a single faint X-ray source found in an archival Chandra dataset. Spectroscopic follow-up with the 3.5-m Calar Alto telescope confirmed its classification as a CV, possibly of magnetic nature. Our analysis suggests that AX J194939+2631 is a medium distance system (d ≈ 0.6 kpc) containing a late-K or early-M type dwarf as a secondary component and a partially disrupted accretion disc revealed by the double-peaked Halpha line. However, additional deep observations are needed to confirm our tentative classification of this object as an intermediate polar.

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Dates et versions

hal-03730750 , version 1 (20-07-2022)

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Ivan Yu. Zolotukhin, Igor V. Chilingarian. Virtual Observatory based identification of AX J194939+2631 as a new cataclysmic variable. Astronomy and Astrophysics - A&A, 2011, 526, pp.84. ⟨10.1051/0004-6361/201015563⟩. ⟨hal-03730750⟩
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