Ultraviolet detection of the nucleus of NGC2440

Details Ultraviolet detection of the nucleus of NGC2440 Ultraviolet detection of the nucleus of NGC2440

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.326..571h&link_type=abstract

Nature (ISSN 0028-0836), vol. 326, April 9, 1987, p. 571-573.

Astronomy and Astrophysics

Astronomy

14

Hot Stars, Planetary Nebulae, Spaceborne Astronomy, Stellar Spectra, Ultraviolet Spectra, Charge Coupled Devices, Iue, Stellar Evolution

Scientific paper

Recently, Atherton et al. announced the detection of the central, exciting star of the planetary nebula, NGC 2440, on a narrow-band CCD image. They found it to be one of the hottest stars known. Here, the author reports the detection of the same star in ultraviolet spectra taken with the IUE satellite. The stellar parameters derived from these spectra, T ≡ 200,000K, L = 1,500 L_sun;, log g = 7, M = 0.6 M_sun;, are in accord with stellar evolutionary theory.

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