Outflow and accretion detections in the young stellar object IRAS 04579+4703

Abstract

We present Submillimeter Array observations of the young stellar object IRAS 04579+4703 in the 1.3 mm continuum and in the 12CO(2-1), 13CO(2-1) and C18O(2-1) lines. The 1.3 mm continuum image reveals a flattened structure with a mass of 13 Msun. The 12CO(2-1) line map and position-velocity (PV) diagram, together with the broad wing (full width=30 km/s of 12CO(2-1)) line, clearly show that there is an outflow motion, which originates from an embedded massive YSO in this region. The lengths of the blue-shifted and red-shifted lobes are 0.14 pc and 0.13 pc respectively. The total gas mass, average dynamical timescale and mass entrainment rate of the outflow are 1.8 Msun, 1.7*10^4 yr and 1.1*10^(-4) Msun/yr, respectively. The flattened morphology of the continuum source perpendicular to the outflow direction, and the velocity gradient seen in the spectra of C18O(2-1) taken from different locations along the major axis of the continuum source, suggest the presence of an accretion disk in this region.

4 pages, 4 figures, accepted by A&A Letters

References in corpus (6)

• Rotating toroids in G10.62-0.38, G19.61-0.23, and G29.96-0.02
• Signatures of inflow motion in cores of massive star formation: Potential collapse candidates
• Survey of intermediate/high-mass star-forming regions at centimeter and millimeter wavelengths
• Infall and Outflow of Molecular Gas in Sgr B2
• SMA Imaging of the Maser Emission from the H30$\alpha$ Radio Recombination Line in MWC349A
• Infall, outflow, and rotation in the G19.61-0.23 hot molecular core

Cited by in corpus (3)

• Accretion disks in luminous young stellar objects
• Radio Jets from Young Stellar Objects
• K-band High-Resolution Spectroscopy of Embedded Massive Protostars