The early ultraviolet evolution of the ONeMg nova V382 Velorum 1999

Steven N. Shore, Greg Schwarz, Howard E. Bond, Ronald A. Downes, Sumner Starrfield, A. Evans, Robert D. Gehrz, Peter H. Hauschildt, Joachim Krautter, Charles E. Woodward

Research output: Contribution to journalArticle

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Abstract

We present a multiwavelength study of the ONeMg Galactic nova V382 Velorum 1999 using HST/STIS and FUSE ultraviolet spectra and comparisons with published ground-based optical spectra. We find a close match to the basic phenomenology of another well-studied ONeMg nova, V1974 Cygni (Nova Cyg 1992), in particular, to the spectral development through the start of the nebular phase. Following an "iron curtain" phase, the nova proceeded through a stage of P Cygni line profiles on all important resonance lines, as in many ONeMg novae and unlike the CO class. Emergent emission lines displayed considerable structure, as seen in VI974 Cyg, indicating fragmentation of the ejecta at the earliest stages of the outburst. Analysis and modeling of our ultraviolet spectra suggest that (4-5) × 10-4 M of material was ejected and that the distance to the nova is ≃2.5 kpc. Relative to solar values, we find the following abundances: He = 1.0, C = 0.6 ± 0.3, N = 17 ± 4, O = 3.4 ± 0.3, Ne = 17 ± 3, Mg = 2.6 ± 0.1, Al = 21 ± 2, and Si = 0.5 ± 0.3. Finally, we briefly draw comparisons with Nova LMC 2000, another ONeMg nova, for which similar data were obtained with HST and FUSE.

Original languageEnglish (US)
Pages (from-to)1507-1518
Number of pages12
JournalAstronomical Journal
Volume125
Issue number3 1767
DOIs
StatePublished - Mar 2003

Fingerprint

Far UV Spectroscopic Explorer
ultraviolet spectra
curtains
novae
ejecta
resonance lines
phenomenology
optical spectrum
fragmentation
iron
outburst
profiles
modeling
comparison

Keywords

  • Novae, cataclysmic variables
  • Stars: individual (V382 Velorum)
  • Ultraviolet: stars

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Shore, S. N., Schwarz, G., Bond, H. E., Downes, R. A., Starrfield, S., Evans, A., ... Woodward, C. E. (2003). The early ultraviolet evolution of the ONeMg nova V382 Velorum 1999. Astronomical Journal, 125(3 1767), 1507-1518. https://doi.org/10.1086/367803

The early ultraviolet evolution of the ONeMg nova V382 Velorum 1999. / Shore, Steven N.; Schwarz, Greg; Bond, Howard E.; Downes, Ronald A.; Starrfield, Sumner; Evans, A.; Gehrz, Robert D.; Hauschildt, Peter H.; Krautter, Joachim; Woodward, Charles E.

In: Astronomical Journal, Vol. 125, No. 3 1767, 03.2003, p. 1507-1518.

Research output: Contribution to journalArticle

Shore, SN, Schwarz, G, Bond, HE, Downes, RA, Starrfield, S, Evans, A, Gehrz, RD, Hauschildt, PH, Krautter, J & Woodward, CE 2003, 'The early ultraviolet evolution of the ONeMg nova V382 Velorum 1999', Astronomical Journal, vol. 125, no. 3 1767, pp. 1507-1518. https://doi.org/10.1086/367803
Shore SN, Schwarz G, Bond HE, Downes RA, Starrfield S, Evans A et al. The early ultraviolet evolution of the ONeMg nova V382 Velorum 1999. Astronomical Journal. 2003 Mar;125(3 1767):1507-1518. https://doi.org/10.1086/367803
Shore, Steven N. ; Schwarz, Greg ; Bond, Howard E. ; Downes, Ronald A. ; Starrfield, Sumner ; Evans, A. ; Gehrz, Robert D. ; Hauschildt, Peter H. ; Krautter, Joachim ; Woodward, Charles E. / The early ultraviolet evolution of the ONeMg nova V382 Velorum 1999. In: Astronomical Journal. 2003 ; Vol. 125, No. 3 1767. pp. 1507-1518.
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AU - Evans, A.

AU - Gehrz, Robert D.

AU - Hauschildt, Peter H.

AU - Krautter, Joachim

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N2 - We present a multiwavelength study of the ONeMg Galactic nova V382 Velorum 1999 using HST/STIS and FUSE ultraviolet spectra and comparisons with published ground-based optical spectra. We find a close match to the basic phenomenology of another well-studied ONeMg nova, V1974 Cygni (Nova Cyg 1992), in particular, to the spectral development through the start of the nebular phase. Following an "iron curtain" phase, the nova proceeded through a stage of P Cygni line profiles on all important resonance lines, as in many ONeMg novae and unlike the CO class. Emergent emission lines displayed considerable structure, as seen in VI974 Cyg, indicating fragmentation of the ejecta at the earliest stages of the outburst. Analysis and modeling of our ultraviolet spectra suggest that (4-5) × 10-4 M⊙ of material was ejected and that the distance to the nova is ≃2.5 kpc. Relative to solar values, we find the following abundances: He = 1.0, C = 0.6 ± 0.3, N = 17 ± 4, O = 3.4 ± 0.3, Ne = 17 ± 3, Mg = 2.6 ± 0.1, Al = 21 ± 2, and Si = 0.5 ± 0.3. Finally, we briefly draw comparisons with Nova LMC 2000, another ONeMg nova, for which similar data were obtained with HST and FUSE.

AB - We present a multiwavelength study of the ONeMg Galactic nova V382 Velorum 1999 using HST/STIS and FUSE ultraviolet spectra and comparisons with published ground-based optical spectra. We find a close match to the basic phenomenology of another well-studied ONeMg nova, V1974 Cygni (Nova Cyg 1992), in particular, to the spectral development through the start of the nebular phase. Following an "iron curtain" phase, the nova proceeded through a stage of P Cygni line profiles on all important resonance lines, as in many ONeMg novae and unlike the CO class. Emergent emission lines displayed considerable structure, as seen in VI974 Cyg, indicating fragmentation of the ejecta at the earliest stages of the outburst. Analysis and modeling of our ultraviolet spectra suggest that (4-5) × 10-4 M⊙ of material was ejected and that the distance to the nova is ≃2.5 kpc. Relative to solar values, we find the following abundances: He = 1.0, C = 0.6 ± 0.3, N = 17 ± 4, O = 3.4 ± 0.3, Ne = 17 ± 3, Mg = 2.6 ± 0.1, Al = 21 ± 2, and Si = 0.5 ± 0.3. Finally, we briefly draw comparisons with Nova LMC 2000, another ONeMg nova, for which similar data were obtained with HST and FUSE.

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