1994/09/13 by A. C. Quillen, Alice C. Quillen, Jay. A. Frogel +5 · 6 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/175381
16pages, postscript, ~accepted to ApJ, Paper is available with compressed postscript figures via anonymous ftp from payne.mps.ohio-state.edu in the directory pub/quillen/n7479, AYOSU-9-94-002
arxiv created 1994/09/13 · openalex publication_date 1995/03/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present images of the barred galaxy NGC 7479 in the optical and near-infrared broad bands B, V, R, J, H, K, and images in Hα + [N II] and CO (J = 1 - 0) emission. The Hα and CO emission in the bar are coincident and confined to narrow linear features that are offset from the center of the bar as observed in the near-infrared. We estimate the gravitational potential from the K image, which provides an estimate of the torque on the gas at the position of the CO emission in the bar. We find that the implied gas inflow velocity derived from the torque is 10-20 km s-1^, Our inflow velocity is independent of the large streaming motions which can be observed in CO and H I.