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Prevalence of Radio Emission in LoBALs Showing Disturbed Morphologies in the Optical

ORAL

Abstract

We present results from an archival investigation using radio data from the Very Large Array Sky Survey (VLASS) of a volume-limited sample of nearby Low-ionization Broad Absorption Line (LoBAL) quasars. They are interesting because of their blue-shifted broad absorption lines in the UV spectra indicating winds. Either radiation fields or radio jets drive these winds and potentially influence the growth of the galaxy, but the driving cause is still debated. Radio jets might drive these extreme outflows in the case of young radio sources with emerging jets. This sample has been previously analyzed in IR and in the optical using the Hubble Space Telescope (HST) to determine the levels of star formation and morphologies. These objects were thought to be radio quiet or intermediate. The radio-to-optical ratio classifies them as radio quiet or radio loud. We investigate the correlation between the optical and the radio morphologies. We create contour maps from the radio data using SAOImage DS9. We overlay the radio contour maps onto the optical images from the HST and investigate any correlations. Preliminary results show a higher fraction of LoBALS having radio emission than is seen in typical quasars, which merits further investigation.

Presenters

  • Maya Davidson

    University of Northern Colorado

Authors

  • Maya Davidson

    University of Northern Colorado

  • Mariana Lazarova

    University of Northern Colorado