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Spectroscopy and near-infrared photometry of the helium nova V445 puppis
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Woudt, P. A. and Steeghs, D. (2005) Spectroscopy and near-infrared photometry of the helium nova V445 puppis. In: Interacting binaries : accretion, evolution, and outcomes, Cefalu, Sicily, 4-10 Jul 2004. Published in: AIP Conference Proceedings, Vol.797 pp. 647-650. ISSN 0094-243X. doi:10.1063/1.2130306
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Official URL: http://dx.doi.org/10.1063/1.2130306
Abstract
V445 Pup (Nova Puppis 2000) is the first observed example of a helium nova (Kato & Hachisu 2003). Here we present Magellan spectroscopy of V445 Pup, obtained three years after outburst (V = 19.91 mag). The optical spectrum consists of He I, [O I], [O II], [O III] emission lines; no hydrogen is present. The emission lines show multiple velocity components (around ± 850 km s−1 and ± 1600 km s−1), associated with an expanding and clearly asymmetric nova shell. Images of V445 Pup obtained under good seeing conditions show this object to be elongated and extended. The expanding nova shell should allow an accurate distance determination of V445 Pup through high‐resolution imaging and integral field unit spectroscopy. We have continuously monitored the near‐infrared (J, H, Ks) secular evolution since 2002 March with the Infrared Survey Facility (IRSF) from the Sutherland site of the South African Astronomical Observatory (SAAO). Nearly four years of the outburst, V445 Pup is still covered by an optically thick dust shell (2004 September 29: E(J − Ks) ∼ 4.6 ± 0.1 mag).
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Stars, New | ||||
| Journal or Publication Title: | AIP Conference Proceedings | ||||
| Publisher: | American Institute of Physics | ||||
| ISSN: | 0094-243X | ||||
| Book Title: | AIP Conference Proceedings | ||||
| Official Date: | 2005 | ||||
| Dates: |
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| Volume: | Vol.797 | ||||
| Page Range: | pp. 647-650 | ||||
| DOI: | 10.1063/1.2130306 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | Interacting binaries : accretion, evolution, and outcomes | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Cefalu, Sicily | ||||
| Date(s) of Event: | 4-10 Jul 2004 |
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