The nature of BL Lacertae

Details The nature of BL Lacertae The nature of BL Lacertae

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...195l..55b&link_type=abstract

Astrophysical Journal, vol. 195, Jan. 15, 1975, pt. 2, p. L55-L59. NASA-supported research

Astronomy and Astrophysics

Astrophysics

20

Astronomical Photometry, Elliptical Galaxies, Galactic Structure, Nebulae, Quasars, Image Tubes, Light Scattering, Red Shift, Spectral Energy Distribution, Spectrophotometry

Scientific paper

Spectrophotometric measurements of the nebula around BL Lacertae have been made with the Lick image-tube scanner on the 3-m telescope. No absorption features were seen, and, although the nebular spectrum is curved and steeper than that of BL Lac itself, it is not a good match to the energy distribution of a normal elliptical galaxy. Thus we do not confirm the observations by Oke and Gunn in which absorption features were seen corresponding to those in the redshifted spectrum of an elliptical galaxy. We have found no evidence that the nebula around BL Lac is a normal galaxy of stars.

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