Astronomy and Astrophysics – Astronomy
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...552l.159b&link_type=abstract
The Astrophysical Journal, Volume 552, Issue 2, pp. L159-L162.
Astronomy and Astrophysics
Astronomy
7
Ism: Individual: Alphanumeric: G110.3+11.3, Ism: Jets And Outflows, Ism: Reflection Nebulae, Stars: Formation, Stars: Mass Loss, Ism: Supernova Remnants
Scientific paper
The Bok globule B175, located toward a giant region of patchy extinction 10° above the Galactic plane known as the Cepheus Flare, is currently engaged in a chance encounter with a B9.5 V star, producing a prominent reflection nebula, Ced 201. Partly owing to the presence of this star, a fairly accurate distance estimate of 400 pc can be derived for B175. An imaging and spectroscopic study of B175 led to the discovery of a new Herbig-Haro (HH) object, HH 450, emerging from a deeply embedded and cold IRAS source, 22129+7000. Furthermore, we find several parsec-scale filaments of emission that trace the rim of a new supernova remnant, G110.3+11.3, which appears to be approaching the globule. This remnant is located near the edge of a large, 6° radius H I and CO cavity that coincides with a bright diffuse soft X-ray enhancement, probably due to several recent supernova explosions. At 400 pc, G110.3+11.3 is one of the closer known supernova remnants. The supernova remnant and the HH flow appear to be heading toward a frontal collision in about 1000 yr.
Bally John
Reipurth Bo
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