Abstract
We present measurements of the interstellar polarization at 1.65 μm of stars shining through the filamentary dark cloud GF 9. Unlike many dark clouds, the interstellar polarization through GF 9 increases significantly with increasing extinction through the cloud. We find the magnetic field geometry in GF 9-core is very smooth, in agreement with results from far-infrared polarimetry by Clemens, Kraemer, & Ciardi (published in 1999). Our much more limited results for GF 9-filament are consistent with a disordered field, also in agreement with the far-infrared polarimetry. Comparison of the near-infrared and far-infrared position angles suggests that there is a moderate rotation in the projected magnetic field direction from the exterior to the interior of GF 9-core.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3208-3212 |
| Number of pages | 5 |
| Journal | Astronomical Journal |
| Volume | 125 |
| Issue number | 6 1770 |
| DOIs | |
| State | Published - Jun 2003 |
Keywords
- ISM: magnetic fields