Studies of the SN 1987A Debris with HST Observations

Details Studies of the SN 1987A Debris with HST Observations Studies of the SN 1987A Debris with HST Observations

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.9901p&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #99.01; Bulletin of the American Astronomical Society, Vol. 29, p.1368

Astronomy and Astrophysics

Astronomy

Scientific paper

The HST observations of Supernova 1987A provide for the first time information on the shape and expansion of a late time supernova atmosphere. The photometric and spectroscopic evolution of Supernova 1987A have been continuously monitored by the Supernova INtensive Study (SINS) collaboration which cover a span of 7 years (1990 August --- 1997 July). The supernova debris is resolved in the HST image and its size can be directly measured. The debris profile is fitted with a brightness function derived from the spectroscopic data. The debris has a diameter of ~ 0.('') 2 and it expands homologously at ~ 2800 km s(-1) at all wavebands. The measured velocity reflects that of the radioactive Fe core materials and suggests severe mixing in the supernova envelope. With the post service mission images, the shape and asymmetry of the debris can also be studied. The measured major to minor axes ratio of the debris is ~ 1.15 --- 1.20, with the major axis nearly aligned with the axis of the circumstellar ring system. With the last set of images taken in 1997 July (day 3791), small scale structures can be identified in the SN 1987A debris. The observed structure is consistent with a model with clumps of materials ejected above and below the plane of the circumstellar ring. Detailed studies of the shape of the debris provide additional constraints on the progenitor models and explosion dynamics of the supernova.

Affiliated with

Also associated with

No associations

Rating

Studies of the SN 1987A Debris with HST Observations 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 Studies of the SN 1987A Debris with HST Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Studies of the SN 1987A Debris with HST Observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1176844