The Ages of Circumnuclear Starbursts from Near-IR Spectroscopy: Bushfires or Mexican Wave?
We have obtained K-band spectra with CGS4 on UKIRT for circumnuclear star-forming regions in NGC 4321, NGC 2903, and NGC 7469. A comparison of the equivalent widths of Brγ emission and CO absorption with starburst models in the literature allows us to simultaneously determine the age distribution and burst decay timescales around each ring. We find
Ryder, Stuart D. et al.
Fecha de publicación:
0
2001