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.

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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:	Date Event 2005 Published
Volume:	Vol.797
Page Range:	pp. 647-650
Identification Number:	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
References:	Ashok, N.M., & Banerjee, D.P.K. 2003, A&A, 409, 1007 Henden, A.A., Wagner, R.M., & Starrfield, S.G. 2001, IAUC, 7730 Iben, I., Jr., & Tutukov, A.V. 1991, ApJ, 370, 615 Kato, M., & Hachisu, I. 2003, ApJ, 598, 507L Nelemans, G., Yungelson, L.R., Portegies-Zwart, S.F. 2004, MNRAS, 349, 181 Wagner, R.M., Foltz, C.B., & Starrfield, S.G. 2001, IAUC, 7556 Warner, B. 1995, Ap&SS, 225, 249 Woudt, P.A. 2002, IAUC, 7955
URI:	http://wrap.warwick.ac.uk/id/eprint/50099

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