CCD observations of bipolar nebulae. III - R Mon/NGC 2261

Details CCD observations of bipolar nebulae. III - R Mon/NGC 2261 CCD observations of bipolar nebulae. III - R Mon/NGC 2261

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...149..158a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 149, no. 1, Aug. 1985, p. 158-166.

Astronomy and Astrophysics

Astrophysics

34

Astronomical Photometry, Polarimetry, Reflection Nebulae, Variable Stars, Astronomical Maps, Charge Coupled Devices, H Alpha Line, Pre-Main Sequence Stars, Spatial Distribution, Stellar Envelopes

Scientific paper

New polarization maps and photometry of R Mon and NGC 2261 are presented together with spectropolarimetry of R Mon itself. The observations were made with the Royal Observatory, Edinburgh CCD Imaging Spectropolarimeter and have a pixel resolution of 0.76 arcsec. These data provide new evidence to support a bipolar model for the system in that small, highly polarized 'minilobes' exist close to R Mon which are separated by a narrow elongated region of low polarization characteristic of a circumstellar disk or torus. In the outer nebula the magnitude of the polarization increases with distance from R Mon, the increase being more rapid at longer wavelengths. A possible explanation of this is growth in the size of the scattering particles with distance from the illuminatinig source. Large regions of the nebula are spatially uniform in polarization indicating the absence of small scale structure in the gas/dust distribution. Across R Mon itself the results support an interpretation that a large part of the polarization is due to aligned dust grains. Spectropolarimetry of R Mon shows that the strong H alpha emission differs from the adjacent continuum in its polarization magnitude and position angle. This can only be explained by the superposition of two (or more) polarization sources.

Affiliated with

Also associated with

No associations

Rating

CCD observations of bipolar nebulae. III - R Mon/NGC 2261 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 CCD observations of bipolar nebulae. III - R Mon/NGC 2261, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CCD observations of bipolar nebulae. III - R Mon/NGC 2261 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-752665