Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..74..169m&link_type=abstract
Astrophysics and Space Science, vol. 74, no. 1, Jan. 1981, p. 169-188.
Astronomy and Astrophysics
Astrophysics
17
Astronomical Spectroscopy, Flow Velocity, Nebulae, Astronomical Photography, H Alpha Line, H Ii Regions, Ionized Gases, Molecular Clouds, Supernova Remnants
Scientific paper
High-velocity features over a velocity range of 180 km/s have now been definitely identified on the profiles of the H-alpha line from the H II region M17. A photon-counting image tube on the intermediate grating spectrograph of the 3.9-m Anglo-Australian telescope was employed. Many mechanisms for the formation of these high-velocity phenomena and the co-moving H I, molecular/H II large-scale sheets, which have lower velocities, are considered. Flows from ionization fronts moving into (and in one case breaking out from) small globules and large neutral sheets are compared to the large- and small-scale effects of energetic stellar winds. External and internal supernova remnants are also discussed and radiation pressure on embedded dust grains and the ionized gas is not discounted. Motions generated during periods of star formation are also mentioned.
Meaburn John
Walsh Jonathan R.
No associations
LandOfFree
High velocities in the interstellar complex of M17 /NGC 6618/ - New observations and possible mechanisms 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 High velocities in the interstellar complex of M17 /NGC 6618/ - New observations and possible mechanisms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High velocities in the interstellar complex of M17 /NGC 6618/ - New observations and possible mechanisms will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1051309