NOAO >   Observing Info >   Approved Programs >   2013A-0438

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Proposal Information for 2013A-0438


PI: Emily R. Manne-Nicholas, Georgia State University, nicholas@chara.gsu.edu
Address: Physics Department, 730 One Park Place, Atlanta, GA 30303, USA

CoI: Misty C. Bentz, Georgia State University

Title: The Black Hole Mass-Bulge Luminosity Relationship for Reverberation- Mapped AGNs in the Near-IR

Abstract: We propose to use WHIRC on WIYN to obtain high spatial resolution near-IR images of the remaining host galaxies in our sample of reverberation-mapped AGNs in order to study the effect of host-galaxy morphology on the M_\rm BH-L_\rm bulge scaling relationship. Recent studies of the M_\rm BH-\sigma_\star relationship, which is based on the stellar and gas-dynamical sample of black hole masses, have uncovered a possible offset in the relationship due to the presence of a pseudobulge or bar in the host galaxy. This offset would adversely affect ones ability to use the M_\rm BH-\sigma_\star relationship as a way to estimate black hole masses efficiently because it would require the detailed morphology of the galaxy to be known \it a priori. Preliminary results based on optical HST data suggest that the M_\rm BH-L_\rm bulge is not plagued by this same offset. However, due to dust and on-going star formation, the optical data yield an M_\rm BH-L_\rm bulge relationship with a slightly higher scatter. WHIRC near-IR imaging is essential to minimize the effects of dust and star formation in order to confirm the M_\rm BH-L_\rm bulge relationship as a more accurate predictor of black hole masses and a potentially more fundamental relationship, thus informing our understanding of black hole and galaxy co-evolution across cosmic time. \emphThe proposed observations will comprise a significant portion of the PI's PhD thesis.


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