The remarkable blue excess in the spectrum of the cometary nebula PP85

Details The remarkable blue excess in the spectrum of the cometary nebula PP85 The remarkable blue excess in the spectrum of the cometary nebula PP85

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.208p..37l&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 208, June 1, 1984, p. 37P-41P. Research supported by th

Astronomy and Astrophysics

Astronomy

2

Astronomical Spectroscopy, Nebulae, Continuous Spectra, Early Stars, Molecular Clouds, T Tauri Stars

Scientific paper

Low dispersion spectroscopic observations of the cometary nebula PP85, obtained with a photon-counting detector in the λλ ≡ 3400 - 6900 Å spectral region are presented. It is found that the spectrum from a condensation near the apex of the nebula is of a G5 star, probably of T Tauri-type. A very strong blue continuum is found. Scattering by dust grains alone cannot account for the blue excess detected. To explain the observed energy distribution, the presence of a hotter hidden component or emission from a non-thermal mechanism is needed.

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