Dramatic emission line variations in QSO KAZ 102 and possible causes

Bibcode
1998A&A...330..419D
de Diego, J. A.; Dultzin-Hacyan, D.; Benitez, E.; Thompson, K. L.
Bibliographical reference

Astronomy and Astrophysics, v.330, p.419-422 (1998)

Advertised on:
2
1998
Journal
Astronomy and Astrophysics
Number of authors
4
IAC number of authors
0
Citations
8
Refereed citations
8
Description
We report optical spectroscopic observations of the radio-quiet quasar Kaz 102. We find impressive variations of the Hα emission line both in shape and intensity. Hα dimms by 40%, and develops a blue asymmetry within a few years. The continuum level also decreases by a similar amount. We discuss the results in terms of the kinematics of the BLR (Broad Line Region), and consider several plausible scenarios: The association of the BLR to Supernovae Remnants evolving in a dense medium, the emission from two BLRs in a binary black hole system, emission from clouds whose motion is predominantly radial coupled with light echoes, and variations in the distribution of a small number of clouds. Based on observations made at the Observatorio Astronómico Nacional at San Pedro Mártir, Baja California
Type
Refereed
Quasars

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