A high-velocity H I stream interacting with the galactic disc
Open Access
- 1 October 1981
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 196 (4) , 835-844
- https://doi.org/10.1093/mnras/196.4.835
Abstract
21-cm line observations have been made of the high-velocity H I stream near l = 160°, b = – 50°, V = – 110 km s−1 discovered by van Kuilenburg. The observations have an angular resolution of 0°.55, a velocity resolution of 7.3 km s−1 and an rms noise of ∼ 25 mK. The – 110 km s−1 stream is at least 25° long, and is coincident with a filament in the local H I gas at a velocity of – 10 km s−1. It is suggested that the – 110 km s−1 stream is colliding with the galactic H I disc, and that the – 10 km s−1 filament is shocked galactic gas. The distance from the Sun is estimated to be between 100 and 300 pc.Keywords
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