The nature of the BL Lacertae object AO 0235 + 164

Details The nature of the BL Lacertae object AO 0235 + 164 The nature of the BL Lacertae object AO 0235 + 164

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...318..577c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 318, July 15, 1987, p. 577-584.

Mathematics

Logic

69

Astronomical Spectroscopy, Bl Lacertae Objects, Emission Spectra, Periodic Variations, Visible Spectrum, Absorption Spectra, Line Spectra, Magnesium, Red Shift

Scientific paper

Emission features in the optical spectrum of the highly variable BL Lac object AO 0235 + 164 have been detected which are identified as Mg II, forbidden Ne V, and forbidden O II at a redshift of 0.9399, consistent with a cosmological interpretation of the two absorption systems at z = 0.524 and z = 0.851. The spectrum also shows emission features associated with the z = 0.524 system at a projected separation of 20 kpc from the apparent central concentration of the material producing that absorption. This implies a highly extended and very luminous line-emitting region for the material at z = 0.524. A comparison of the new data with previous spectroscopic observations of the BL Lac object when it was faint suggests that the Mg II emission may be variable on a time scale of approximately 2 yr.

Affiliated with

Also associated with

No associations

Rating

The nature of the BL Lacertae object AO 0235 + 164 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The nature of the BL Lacertae object AO 0235 + 164, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nature of the BL Lacertae object AO 0235 + 164 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-789723