Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010arep...54..317s&link_type=abstract
Astronomy Reports, Volume 54, Issue 4, pp.317-326
Astronomy and Astrophysics
Astronomy
Scientific paper
Using the results of our H α interferometric observations and observational data on the 21 cm and CO lines, we have analyzed the structure and kinematics of the interstellar medium in the extended vicinity of the star WR 137 and the supernova remnants CTB 87 and G73.9+0.9. A shell structure with a radius of up to 40' observable in optical lines has been discovered around WR 137. The high-velocity motions of ionized hydrogen inside this shell can be interpreted as expansion of the gas swept out by the wind of WR 137 at velocities of up to 60 km/s. The ionized hydrogen near WR 137 emits at the systematic velocity V LSR ˜ 6-18 km/s. The expansion ofG73.9+0.9 at a velocity of up to 55 km/s has been confirmed. The systematic velocities of the ionized hydrogen toward this supernova remnant are V LSR ≃ -14…+14 km/s. An HI shell around G73.9+0.9 has been detected at velocities V LSR≃-14…-8 km/s. A very faint optical shell of CTB 87 with a size of about 20' has also been detected. Evidence that CTB 87 is located in the Cygnus Arm is presented.
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