Dust formation in Nova Cassiopeiae 1993 seen by ultraviolet absorption

Details Dust formation in Nova Cassiopeiae 1993 seen by ultraviolet absorption Dust formation in Nova Cassiopeiae 1993 seen by ultraviolet absorption

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994natur.369..539s&link_type=abstract

Nature, Volume 369, Issue 6481, pp. 539-541 (1994).

Physics

27

Novae, Supernovae

Scientific paper

The clouds of gas in interstellar space also contain grains of dust, whose properties and origins have been the focus of debate for decades. Some dust formation has been assumed to take place in novae explosions1-5, as was first implied by the observation of a steep decrease in the amount of light emitted by the nova1,2 DQ Herculis 1934 about 100 days after outburst, presumed to be due to extinction by dust. Here we report observations from the International Ultraviolet Explorer satellite which show directly the onset of dust formation in Nova Cassiopeiae 1993, a classical nova of the same type as DQ Her 1934. The dust formed very quickly- about 70 days after the nova explosion-despite the initially high temperature of the ejecta. Our results suggest that high-energy photons are absorbed efficiently by the gas in the ejecta, lowering the temperature in the gas while it is still dense, and thereby allowing molecules to form and then to condense into dust.

Affiliated with

Also associated with

No associations

Rating

Dust formation in Nova Cassiopeiae 1993 seen by ultraviolet absorption 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 Dust formation in Nova Cassiopeiae 1993 seen by ultraviolet absorption, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dust formation in Nova Cassiopeiae 1993 seen by ultraviolet absorption will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1506434