# From clouds to protoplanetary disks: the astrochemical link

4-8 October 2015
Hans Harnack Haus
Europe/Berlin timezone
Home > Timetable > Session details > Contribution details

Poster session

# Dust properties and gas dynamics in a magnetized prestellar core

## Speakers

• Dr. Felipe ALVES

## Content

Prestellar cores are collapsing objects where gravity struggles against thermal pressure and magnetic fields in order to evolve and form a protostar. Observationally, this evolution may be traced by the gas kinematics and dust properties. In this work, we present recent results toward the object FeST 1-457, an evolved starless cores in the Pipe nebula. We report APEX dust polarization data and IRAM 30-m molecular line data toward this object. The polarization data reveal that the core is embedded in a very uniform magnetic field, and that the dust grains are aligned up to $\sim 10^4$ cm$^{-3}$. Our model predicts a polarization hole for higher densities, which is consistent with radiative torques grain alignment theory. We are currently inspecting the molecular line data (N$_2$H$+$ and NH$_2$D) in order to check for variations between ions and neutral species. Such a variation would imply an unambiguous evidence of gas dynamics affected by the magnetic field.