Multi-component Analysis of Position-Velocity Cubes of the HH 34 Jet

Details Multi-component Analysis of Position-Velocity Cubes of the HH 34 Jet Multi-component Analysis of Position-Velocity Cubes of the HH 34 Jet

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aj....143...60r&link_type=abstract

The Astronomical Journal, Volume 143, Issue 3, article id. 60 (2012).

Astronomy and Astrophysics

Astronomy

Ism: Jets And Outflows, Ism: Kinematics And Dynamics, Stars: Mass-Loss- Stars: Pre-Main Sequence

Scientific paper

We present an analysis of Hα spectra of the HH 34 jet with two-dimensional spectral resolution. We carry out multi-Gaussian fits to the spatially resolved line profiles and derive maps of the intensity, radial velocity, and velocity width of each of the components. We find that close to the outflow source we have three components: a high (negative) radial velocity component with a well-collimated, jet-like morphology; an intermediate velocity component with a broader morphology; and a positive radial velocity component with a non-collimated morphology and large linewidth. We suggest that this positive velocity component is associated with jet emission scattered in stationary dust present in the circumstellar environment. Farther away from the outflow source, we find only two components (a high, negative radial velocity component, which has a narrower spatial distribution than an intermediate velocity component). The fitting procedure was carried out with the new AGA-V1 code, which is available online and is described in detail in this paper.

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