| LDR | ·····naa##22·····5##4500 |
| 001 | 001542 |
| 005 | 20170705111236.0 |
| 008 | 161223s2016####xxu####f######00|#0#eng#d |
| 245 | 10 | $a 1.3 mm polarized emission in the circumstellar disk of a massive protostar / $c M. Fernández-López ... [et al.]. |
| 490 | 0# | $a Trabajos publicados del IAR ; $v no. 1384 |
| 520 | ## | $a 953We present the first resolved observations of the 1.3 mm polarized emission from the disk-like structure surrounding the high-mass protostar Cepheus A HW2. These CARMA data partially resolve the dust polarization, suggesting a uniform morphology of polarization vectors with an average position angle of 57[elevado a la]\circ +/- 6[elevado a la]\circ and an average polarization fraction of 2.0 % +/- 0.4 % . The distribution of the polarization vectors can be attributed to (1) the direct emission of magnetically aligned grains of dust by a uniform magnetic field, or (2) the pattern produced by the scattering of an inclined disk. We show that both models can explain the observations, and perhaps a combination of the two mechanisms produces the polarized emission. A third model including a toroidal magnetic field does not match the observations. Assuming scattering is the polarization mechanism, these observations suggest that during the first few 104 years of high-mass star formation, grain sizes can grow from 1 mu {{m}} to several 10s mum |
| 773 | 0# | $7 ||as $t The astrophysical journal $x 0004-637X $g Vol. 832, (2016), p. 200 |
| 700 | 1# | $a Fernández López, Manuel. |
| 700 | 1# | $a Stephens, Ian W. |
| 700 | 1# | $a Girart, J. M. |
| 700 | 1# | $a Looney, Leslie W. |
| 700 | 1# | $a Curiel, S. |
| 700 | 1# | $a Segura-Cox, Dominique M. |
| 700 | 1# | $a Eswaraiah, C. |
| 700 | 1# | $a Lai, S.-P. |
| 653 | ## | $a Interstellar medium. |
| 653 | ## | $a Cepheus A HW2. |
| 653 | ## | $a Magnetic fields. |
| 653 | ## | $a Polarization. |
| 653 | ## | $a Formation of stars. |
| 653 | ## | $a Polarimetric techniques. |
| 040 | ## | $a AR-BaBIR $b spa |
| 856 | 41 | $u http://adsabs.harvard.edu/abs/2016ApJ...832..200F $y ADS |