Imaging polarimetry of the bipolar nebula Parsamyan 22

Details Imaging polarimetry of the bipolar nebula Parsamyan 22 Imaging polarimetry of the bipolar nebula Parsamyan 22

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.260..171s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 260, no. 1, p. 171-176.

Astronomy and Astrophysics

Astronomy

5

Astronomical Polarimetry, Pre-Main Sequence Stars, Reflection Nebulae, Polarization Characteristics, Stellar Envelopes, Stellar Evolution

Scientific paper

Par 22 shows high levels of polarization which confirm that it is a bipolar reflection nebula. We suggest that circumstellar material, which is very patchy and forms fingers which penetrate the central regions of the nebula, is the remnant of the circumstellar disk which is in the process of disintegration. We take this as an indication that the system is in the later stages of pre-main-sequence evolution. We discuss the origin of the sharp rim/diffuse boundary of each of the nebular lobes.

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