Guerrero, MA, Sabin, L, Tovmassian, G, Santamaria, E, Michel, R, Ramos-Larios, G, Alarie, A, Morisset, C, Bermudez Bustamante, LC, Gonzalez, CP and Wright, NJ (2018) Discovery of a New Classical Nova Shell Around a Nova-like Cataclysmic Variable. Astrophysical Journal, 857 (2). ISSN 0004-637X

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The morphology and optical spectrum of IPHASX J210204.7+471015, a nebula classified as a possible planetary
nebula are, however, strikingly similar to those of AT Cnc, a classical nova shell around a dwarf nova. To
investigate its true nature, we have obtained high-resolution narrowband [O III] and [N II] images and deep optical spectra. The nebula shows an arc of [N II]-bright knots notably enriched in nitrogen, while an [O III]-bright bow shock is progressing throughout the ISM. Diagnostic line ratios indicate that shocks are associated with the arc and bow shock. The central star of this nebula has been identified by its photometric variability. Time-resolved photometric and spectroscopic data of this source reveal a period of 4.26 hr, which is attributed to a binary system. The optical spectrum is notably similar to that of RW Sex, a cataclysmic variable star (CV) of the UX UMa novalike (NL) type. Based on these results, we propose that IPHASX J210204.7+471015 is a classical nova shell observed around a CV-NL system in quiescence.

Item Type: Article
Additional Information: This is the final published version of the article (version of record). It first appeared online via IOP Science at - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: ISM: jets and outflows, novae, cataclysmic variables, stars: individual (IPHAS J210205.83+474018.0)
Subjects: Q Science > QB Astronomy > QB460 Astrophysics
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 03 May 2018 11:00
Last Modified: 16 May 2018 15:21

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