Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-07-03
Mon.Not.Roy.Astron.Soc. 319 (2000) 223
Astronomy and Astrophysics
Astrophysics
22 pages, 9 figues, accepted for publication by MNRAS
Scientific paper
10.1046/j.1365-8711.2000.03841.x
We present first-season infrared (IR) and optical photometry and spectroscopy of the Type Ia Supernova 1998bu in M96. We also report optical polarimetry of this event. SN1998bu is one of the closest type Ia Supernovae of modern times and the distance of its host galaxy is well-determined. We find that SN1998bu is both photometrically and spectroscopically normal. However, the extinction to this event is unusually high, with Av=1.0 +/-0.11. We find that SN1998bu peaked at an intrinsic Mv=-19.37 +/-0.23. Adopting a distance modulus of 30.25 (Tanvir et al. 1999) and using Phillips et al.'s (1999) relations for the Hubble constant we obtain Ho=70.4 +/-4.3 km/s/Mpc. Combination of our IR photometry with those of Jha et al. (1999) provides one of the most complete early-phase IR light curves for a SN Ia published so far. In particular, SN 1998bu is the first normal SN Ia for which good pre-maximum (in the B band) IR coverage has been obtained. It reveals that the J, H and K light curves peak about 5 days earlier than the flux in the B-band curve.
Aparicio Antonio
Benn Chris R.
Burleigh Matthew R.
Chrysostomou Antonio C.
Fernandes A. J. L.
No associations
LandOfFree
An Early-Time Infrared and Optical Study of the Type Ia Supernova 1998bu in M96 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An Early-Time Infrared and Optical Study of the Type Ia Supernova 1998bu in M96, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Early-Time Infrared and Optical Study of the Type Ia Supernova 1998bu in M96 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-728274