The nova rate in the elliptical component of NGC 5128

Robin Ciardullo, Holland C. Ford, R. E. Williams, Peter Tamblyn, George H. Jacoby

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

We present the results of a five year nova survey of NGC 5128 performed with an Hα filter at the prime focus of the CTIO 4 m telescope. In all, 16 novae were detected, of which 12 are members of a statistically complete and homogeneous sample unaffected by the absorption lane of the galaxy. When normalized to B luminosity, the nova rate in the elliptical component of NGC 5128 is 2.7 ± 1.0 times less than that observed in the bulge of M31. However, when normalized in the infrared K bandpass, the two nova rates are identical, and comparable to that measured in the Large Magellanic Cloud. These data suggest that (1) the percentage of binary stars is approximately constant over a large range of star-forming environments, (2) the nova rate in our own galaxy is between 11 and 46 yr-1, and (3) nova rates are not strongly affected by tidal captures in bright globular clusters.

Original languageEnglish (US)
Pages (from-to)1079-1087
Number of pages9
JournalAstronomical Journal
Volume99
Issue number4
DOIs
StatePublished - Apr 1990

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galaxies
novae
binary stars
Magellanic clouds
globular clusters
luminosity
telescopes
filter
filters
stars
rate

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Ciardullo, R., Ford, H. C., Williams, R. E., Tamblyn, P., & Jacoby, G. H. (1990). The nova rate in the elliptical component of NGC 5128. Astronomical Journal, 99(4), 1079-1087. https://doi.org/10.1086/115397
Ciardullo, Robin ; Ford, Holland C. ; Williams, R. E. ; Tamblyn, Peter ; Jacoby, George H. / The nova rate in the elliptical component of NGC 5128. In: Astronomical Journal. 1990 ; Vol. 99, No. 4. pp. 1079-1087.
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Ciardullo, R, Ford, HC, Williams, RE, Tamblyn, P & Jacoby, GH 1990, 'The nova rate in the elliptical component of NGC 5128', Astronomical Journal, vol. 99, no. 4, pp. 1079-1087. https://doi.org/10.1086/115397

The nova rate in the elliptical component of NGC 5128. / Ciardullo, Robin; Ford, Holland C.; Williams, R. E.; Tamblyn, Peter; Jacoby, George H.

In: Astronomical Journal, Vol. 99, No. 4, 04.1990, p. 1079-1087.

Research output: Contribution to journalArticle

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Ciardullo R, Ford HC, Williams RE, Tamblyn P, Jacoby GH. The nova rate in the elliptical component of NGC 5128. Astronomical Journal. 1990 Apr;99(4):1079-1087. https://doi.org/10.1086/115397