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A two micron polarization survey toward dark clouds
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gatley, I. Hough, J. H. Sato, S. Tamura, M. |
| Copyright Year | 1989 |
| Description | A near infrared (2.2 micron) polarization survey of about 190 sources was conducted toward nearby dark clouds. The sample includes both background field stars and embedded young stellar objects. The aim is to determine the magnetic field structure in the densest regions of the dark clouds and study the role of magnetic fields in various phases of star formation processes, and to study the grain alignment efficiency in the dark cloud cores. From the polarization of background field stars and intrinsically unpolarized embedded sources, the magnetic field structure was determined in these clouds. From the intrinsic polarization of young stellar objects, the spatial distribution was determined of circumstellar dust around young stars. Combining the perpendicularity between the disks and magnetic fields with perpendicularity between the cloud elongation and magnetic fields, it is concluded that the magnetic fields might have dominated nearly all aspects of cloud dynamics, from the initial collapse of the clouds right through to the formation of disks/tori around young stars in these low to intermediate mass star forming clouds of the Taurus, Ophiuchus, and Perseus. |
| File Size | 110277 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910005639 |
| Archival Resource Key | ark:/13960/t2v45mt8f |
| Language | English |
| Publisher Date | 1989-12-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Near Infrared Radiation Stellar Cores Stellar Envelopes Stellar Magnetic Fields Spatial Distribution Cosmic Dust Star Formation Stellar Mass Gravitational Collapse Magnetic Field Configurations Polarization Waves Magnetic Disks Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
