Infrared and Optical Study of the Type Ia SN 1998bu in M96

Details Infrared and Optical Study of the Type Ia SN 1998bu in M96 Infrared and Optical Study of the Type Ia SN 1998bu in M96

1999-02-03

arxiv.org/abs/astro-ph/9902056v1

Astronomy and Astrophysics

Astrophysics

7 pages, 6 figures. To be published in the Journal of the Italian Astronomical Society

Scientific paper

The type Ia SN 1998bu was discovered in the galaxy M96 on 9 May 1998. It is one of the closest type Ia events of modern times and good temporal coverage has been achieved. Moreover its distance is well-determined. We describe here some of the first-season photometric and spectroscopic observations. While SN 1998bu is unusually highly reddened, we can still deduce that it was a typical type Ia event. Preliminary analysis suggests that for an Ho of about 60 km/(s Mpc), its (de-reddened) peak luminosity, light curve shape and spectroscopic behaviour confirms the relationships found between these parameters in other classic type Ia supernovae.

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