DOI QR코드

DOI QR Code

EXPANSION VELOCITY AND SPECTROSCOPIC CLASSIFICATION OF NOVA DELPHINI 2013

  • AZALIAH, RHISA (Astronomy Department, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung) ;
  • MALASAN, HAKIM L. (Astronomy Department, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung) ;
  • HAANS, GABRIELA K. (Astronomy Department, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung) ;
  • AKHYAR, SAEFUL (Astronomy Department, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung)
  • Received : 2014.11.30
  • Accepted : 2015.06.30
  • Published : 2015.09.30

Abstract

Low resolution spectra of Nova Delphini 2013 (V339 Del) in the optical range have been obtained at Bosscha Observatory, Indonesia during its maximum light (V = 4.3). Spectra were observed from August 16 to 27, 2013. The GAO-ITB RTS 20.3 cm telescope, and SBIG DSS-7 spectrograph and SBIG ST-7 XE as the detector have been employed throughout the observations. The spectra show P-Cygni profiles in Balmer, NaI'D' and Fe II lines, from which we determined shell expansion velocities of $1421.66{\pm}39.18km/s$, $1227.54{\pm}21.57km/s$ and 1402.86 km/s, respectively. Our spectroscopic observations followed the spectral evolution of V339 Del from the pre-maximum phase to early Orion phase. The characteristics of the nova Delphini 2013 resembles those of Fe II-type novae.

Keywords

References

  1. Ahlmark, L. F. & Clemert, K. A., 1964, A Determination of The Expansion Velocities of Nova Herculis 1963, ArA, 3.333
  2. Bode, M. F. & Evans, A., 2008, Classical Novae. Cambridge University Press, UK
  3. Gallagher, J. S., 1978, Comments on the Spectrum of Nova Scuti 1975, AJ, 221, 211 https://doi.org/10.1086/156019
  4. Gosh, K. K., 1990, Expanding Shell and P Cygni Profiles of 27 Canis Majoris, AJ, 360, 239 https://doi.org/10.1086/169113
  5. Mclaughlin & Dean B., 1942, The Luminosities of Novae, PA, 50, 233
  6. Osterbrock., 1989, Astrophysics of Gaseous Nebulae and Active Galactic Nuclei, University Science Books, USA
  7. Schwarz, et al., 2001, Multiwavelength Analyses of the Extraordinary Nova LMC 1991, RAS, 320, 103 https://doi.org/10.1046/j.1365-8711.2001.03960.x
  8. Tomkin, J., Woodman, J., & Lambert. D. L., 1976, Spectroscopic Observation of Nova Cygni 1975, A&A, 48, 319
  9. Williams, R. E., 1992, The Formation of Novae Spectra, AJ, 104, 725 https://doi.org/10.1086/116268
  10. Younger & James, W., 1980, Spectroscopic Observations of Nova Vulpeculae 1976, AJ, 85, 1232 https://doi.org/10.1086/112787