Photographic Imaging of Light Echoes from Supernova 1987A

Details Photographic Imaging of Light Echoes from Supernova 1987A Photographic Imaging of Light Echoes from Supernova 1987A

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242..555c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 242, NO.4/FEB15, P. 555, 1990

Astronomy and Astrophysics

Astronomy

7

Scientific paper

The light echoes from SN 1987A have been photographed at the prime focus of the 3.9-m Anglo-Australian Telescope. The bright emission nebulosity and large number of faint stars in the field have been canceled from the images by photographic subtraction. A more comprehensive view of the echoes results, revealing that the two previously known arcs are complete circles. Two new echo features are also revealed: an arc just interior to the inner ring over a small range of position angle, and a compact spot which appears to be part of a linear dust feature. The geometry of the echo rings has been deduced from measuring- machine scans of the subtracted image. The inner ring is found to be concentric about the supernova, indicating that the illuminated cloud of dust, which lies ~130 pc in front of the supernova, is roughly normal to the line-of-sight. The outer ring is significantly eccentric about the supernova with its maximum displacement at PA = 29^deg^, in the direction of the nearby OB association NGC 2044. This cloud is therefore inclined to the line-of-sight the supernova. The possibility is discussed that both clouds are part of the N 157C supershell centred on NGC 2044.

Affiliated with

Also associated with

No associations

Rating

Photographic Imaging of Light Echoes from Supernova 1987A 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 Photographic Imaging of Light Echoes from Supernova 1987A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic Imaging of Light Echoes from Supernova 1987A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1842997