Detailed Interstellar Polarimetric Properties of the Pipe Nebula at Core Scales

Details Detailed Interstellar Polarimetric Properties of the Pipe Nebula at Core Scales Detailed Interstellar Polarimetric Properties of the Pipe Nebula at Core Scales

2010-08-30

arxiv.org/abs/1008.5327v2

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

20 pages, 23 figures, Accepted for The Astrophysical Journal

Scientific paper

We use R-band CCD linear polarimetry collected for about 12000 background field stars in 46 fields of view toward the Pipe nebula to investigate the properties of the polarization across this dark cloud. Based on archival 2MASS data we estimate that the surveyed areas present total visual extinctions in the range 0.6 < Av < 4.6. While the observed polarizations show a well ordered large scale pattern, with polarization vectors almost perpendicularly aligned to the cloud's long axis, at core scales one see details that are characteristics of each core. Although many observed stars present degree of polarization which are unusual for the common interstellar medium, our analysis suggests that the dust grains constituting the diffuse parts of the Pipe nebula seem to have the same properties as the normal Galactic interstellar medium. Estimates of the second-order structure function of the polarization angles suggest that most of the Pipe nebula is magnetically dominated and that turbulence is sub-Alvenic. The Pipe nebula is certainly an interesting region where to investigate the processes prevailing during the initial phases of low mass stellar formation.

Affiliated with

Also associated with

No associations

Rating

Detailed Interstellar Polarimetric Properties of the Pipe Nebula at Core Scales 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 Detailed Interstellar Polarimetric Properties of the Pipe Nebula at Core Scales, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detailed Interstellar Polarimetric Properties of the Pipe Nebula at Core Scales will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-401212