Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...409..720t&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 409, no. 2, p. 720-724.
Astronomy and Astrophysics
Astronomy
2
Nebulae, Radio Astronomy, X Ray Astronomy, H Alpha Line, Herbig-Haro Objects, Radio Sources (Astronomy), X Ray Sources
Scientific paper
The bipolar nebula OH 231.8+4.2 surrounds an evolved star which is losing mass at a high rate. An X-ray observation of a region centered on this object, made with the Imaging Proportional Counter on the Einstein Observatory, is presented. In neither the immediate vicinity of the bipolar nebula nor the HH objects was X-ray emission found to arise. Two weak X-ray sources, almost equally spaced about the center of the bipolar nebula, were found along the projection of the polar axis. Their locations suggest the existence of high-velocity polar streams extending well beyond the HH objects, thermalizing behind a shock, and impacting the interstellar medium. The VLA was used to look for 1.5 GHz (20 cm) radio continuum counterparts of the X-ray spots and of the H alpha lobes. No counterparts were detected at a very low flux level. If the extinction to the bipolar lobes is small, the lack of radio emission is consistent with the strength of the H alpha emission.
Morris Mark
Taylor Gregory B.
No associations
LandOfFree
Radio and X-ray observations of OH 231.8+4.2 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 Radio and X-ray observations of OH 231.8+4.2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio and X-ray observations of OH 231.8+4.2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1734975