The Evidence for Massive Star Formation in Early-Type Spiral Galaxies

Details The Evidence for Massive Star Formation in Early-Type Spiral Galaxies The Evidence for Massive Star Formation in Early-Type Spiral Galaxies

1996-12-19

arxiv.org/abs/astro-ph/9612201v1

Astronomy and Astrophysics

Astrophysics

4 pages including two postscript figures. Contribution to the Conference proceedings of the 7th Annual Astrophysics Conference

Scientific paper

10.1063/1.52760

A recent analysis of the IRAS database indicates that the massive star formation rates in early-type (Sa-Sab) spirals are comparable to the massive star formation rates in late-type spirals. $H\alpha$ imaging of some of the infrared luminous early-type spirals reveals two types of galaxies. One type shows clear signs of interaction, whereas the other type appears to host a nuclear starburst. The occurence of nuclear starbursts in early-type spirals may be related to the propensity for such galaxies to also host Seyfert nuclei. The evidence for interactions suggests that early-type spirals are evolving in the current epoch.

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