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The late infrared development of Nova Serpentis 1970

Mitchell, R. M. and Robinson, G. and Hyland, A. R. and Neugebauer, G. (1985) The late infrared development of Nova Serpentis 1970. Monthly Notices of the Royal Astronomical Society, 216 (4). pp. 1057-1071. ISSN 0035-8711. doi:10.1093/mnras/216.4.1057.

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Broad-band infrared observations of FH Ser (Nova Ser 1970) covering the period 40 to 529 days after discovery are presented. Strong quantitative evidence for grain growth in the period 60–111 days is derived from the agreement between predictions of dust shell models and the observations. Between days 111 and 129 the grains undergo a significant reduction in size. The infrared luminosity is found to fall as t⁻³ for t ≳ 100. However, up until day 200 this is due to a continuing grain size reduction, while the bolometric luminosity remains approximately constant. After day 200 the bolometric luminosity falls off as ∼t⁻¹. At late times, an excess flux in the 1-3 µm region appears above the dominant cool dust emission component. This excess flux is probably due to increasing line emission in the J, H and K bandpasses as the ejected shell expands.

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Additional Information:© 1985 Royal Astronomical Society. Provided by the NASA Astrophysics Data System. Accepted 1985 June 20. Received 1985 May 29; in original form 1985 March 4; Published: 01 October 1985. We wish to thank the various night assistants at Mount Wilson and Palomar for their help during the period of these observations. We also thank the numerous Caltech students who assisted in obtaining the observations, enabling us to get the long time coverage reported in this paper. The suggestions of an anonymous referee are gratefully acknowledged. RMM is the holder of a University of Melbourne Research Fellowship. The infrared astronomy project at the University of Melbourne is supported in part by a grant from the Australian Research Grants Scheme whilst infrared astrophysics at Caltech is supported by a grant from NSF.
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University of MelbourneUNSPECIFIED
Australian Research CouncilUNSPECIFIED
Issue or Number:4
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Official Citation:R. M. Mitchell, G. Robinson, A. R. Hyland, G. Neugebauer, The late infrared development of Nova Serpentis 1970, Monthly Notices of the Royal Astronomical Society, Volume 216, Issue 4, October 1985, Pages 1057–1071,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104464
Deposited By: Tony Diaz
Deposited On:21 Jul 2020 15:56
Last Modified:16 Nov 2021 18:32

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