B, V, H Alpha and UV Imaging of the Central 1 KPC of M81

Details B, V, H Alpha and UV Imaging of the Central 1 KPC of M81 B, V, H Alpha and UV Imaging of the Central 1 KPC of M81

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.5986d&link_type=abstract

HST Proposal ID #5986

Physics

Hst Proposal Id #5986 Galaxies &Amp, Clusters

Scientific paper

M81 is a nearby (3.6 Mpc), early-type (Sab) spiral galaxy that hosts a weak Seyfert 1 nucleus embedded in a bright nuclear spiral of H Alpha emission. The nuclear spiral is remarkably similar to that discovered in the nucleus of M31 by Jacoby et. al. (1985, ApJ 290, 136). Narrow band H Alpha imaging with WFPC2 will reveal the spatial distribution of the ionized gas within the central 1.36 kpc diameter region of M81 at 0.2'' resolution. UV imaging with WFPC2 will reveal the distribution of hot ionizing stars at the same resolution. The UV image will help determine whether or not the nuclear H Alpha spiral is photoionized by hot stars. Finally B and V band imaging with the FOC will help elucidate whether or not M81 has multiple nuclei like its nearer counterpart M31 (Lauer et. al. 1993, AJ 106, 1436).

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