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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2019
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=57171616007 https://www.redalyc.org/journal/571/57171616007/ https://www.redalyc.org/journal/571/57171616007/html/ https://www.redalyc.org/journal/571/57171616007/57171616007.epub https://www.redalyc.org/journal/571/57171616007/movil |
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Inhaltsangabe:
- Multiwavelength observations of MASTER OT 075353.88+174907.6: a likely superoutburst of a long period dwarf nova system A. S. Parikh J. V. Hernández Santisteban R. Wijnands D. Page Física, Astronomía y Matemáticas novae stars Accretion 88+174907 individual MASTER OT 075353.88+174907.6 was a blue optical transient reported by the MASTER-Net project on 2017 Oct 31. We carried out multiwavelength follow-up observations of this source during its 2017 outburst using Swift and RATIR. The source was found to be javax.xml.bind.JAXBElement@46f7e1 mag above its quiescent level during the peak of the outburst and the outburst lasted javax.xml.bind.JAXBElement@368cc6 days. Our observations suggest that it was a superoutburst of a long period U Geminorum type dwarf nova system. The spectral energy distribution during the initial slow decay phase of the outburst was consistent with a disk-dominated spectrum (with spectral indices Γ≈1.5-2.3). Afterwards, the UV flux decreased slowlier than the optical and the spectral energy distribution was very steep with indices Γ ≈3.7±0.7. This slow UV decay may be the emission from a cooling white dwarf heated during the outburst. No X-ray emission was detected from the source since it is likely located at a large distance >2.3 kpc. 2019 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57171616007 https://www.redalyc.org/journal/571/57171616007/ https://www.redalyc.org/journal/571/57171616007/html/ https://www.redalyc.org/journal/571/57171616007/57171616007.epub https://www.redalyc.org/journal/571/57171616007/movil en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.55