A light-curve model of the symbiotic nova PU Vul (1979): A very quiet explosion with long-lasting flat peak

Mariko Kato; Izumi Hachisu; Angelo Cassatella; Rosario González-Riestra

doi:10.1088/0004-637X/727/2/72

A light-curve model of the symbiotic nova PU Vul (1979): A very quiet explosion with long-lasting flat peak

Mariko Kato, Izumi Hachisu, Angelo Cassatella, Rosario González-Riestra

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We present a light-curve model of the symbiotic nova PU Vul (Nova Vulpeculae 1979) that shows a long-lasting flat peak with no spectral indication of wind mass loss before decline. Our quasi-evolution models consisting of a series of static solutions explain both the optical flat peak and ultraviolet (UV) light curve simultaneously. The white dwarf mass is estimated to be ∼0.6 M_⊙. We also provide a new determination of the reddening, E(B - V) = 0.43 ±0.05, from UV spectral analysis. Theoretical light-curve fitting of UV 1455 Å provides the distance of d = 3.8 ± 0.7 kpc.

Original language	English
Journal	Astrophysical Journal
Volume	727
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/727/2/72
Publication status	Published - 2011 Feb 1
Externally published	Yes

Keywords

Binaries: symbiotic
Novae, cataclysmic variables
Stars: individual (PU Vul)
Ultraviolet: stars
White dwarfs

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/727/2/72

Cite this

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title = "A light-curve model of the symbiotic nova PU Vul (1979): A very quiet explosion with long-lasting flat peak",

abstract = "We present a light-curve model of the symbiotic nova PU Vul (Nova Vulpeculae 1979) that shows a long-lasting flat peak with no spectral indication of wind mass loss before decline. Our quasi-evolution models consisting of a series of static solutions explain both the optical flat peak and ultraviolet (UV) light curve simultaneously. The white dwarf mass is estimated to be ∼0.6 M⊙. We also provide a new determination of the reddening, E(B - V) = 0.43 ±0.05, from UV spectral analysis. Theoretical light-curve fitting of UV 1455 {\AA} provides the distance of d = 3.8 ± 0.7 kpc.",

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author = "Mariko Kato and Izumi Hachisu and Angelo Cassatella and Rosario Gonz{\'a}lez-Riestra",

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doi = "10.1088/0004-637X/727/2/72",

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T1 - A light-curve model of the symbiotic nova PU Vul (1979)

T2 - A very quiet explosion with long-lasting flat peak

AU - Kato, Mariko

AU - Hachisu, Izumi

AU - Cassatella, Angelo

AU - González-Riestra, Rosario

PY - 2011/2/1

Y1 - 2011/2/1

N2 - We present a light-curve model of the symbiotic nova PU Vul (Nova Vulpeculae 1979) that shows a long-lasting flat peak with no spectral indication of wind mass loss before decline. Our quasi-evolution models consisting of a series of static solutions explain both the optical flat peak and ultraviolet (UV) light curve simultaneously. The white dwarf mass is estimated to be ∼0.6 M⊙. We also provide a new determination of the reddening, E(B - V) = 0.43 ±0.05, from UV spectral analysis. Theoretical light-curve fitting of UV 1455 Å provides the distance of d = 3.8 ± 0.7 kpc.

AB - We present a light-curve model of the symbiotic nova PU Vul (Nova Vulpeculae 1979) that shows a long-lasting flat peak with no spectral indication of wind mass loss before decline. Our quasi-evolution models consisting of a series of static solutions explain both the optical flat peak and ultraviolet (UV) light curve simultaneously. The white dwarf mass is estimated to be ∼0.6 M⊙. We also provide a new determination of the reddening, E(B - V) = 0.43 ±0.05, from UV spectral analysis. Theoretical light-curve fitting of UV 1455 Å provides the distance of d = 3.8 ± 0.7 kpc.

KW - Binaries: symbiotic

KW - Novae, cataclysmic variables

KW - Stars: individual (PU Vul)

KW - Ultraviolet: stars

KW - White dwarfs

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JF - Astrophysical Journal

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A light-curve model of the symbiotic nova PU Vul (1979): A very quiet explosion with long-lasting flat peak

Abstract

Keywords

ASJC Scopus subject areas

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