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Weak and compact radio emission in early massive star formation regions: an ionized jet toward G11.110.12P1


Rosero, V and Hofner, P and McCoy, M and Kurtz, S and Menten, KM and Wyrowski, F and Araya, ED and Loinard, L and Carrasco-Gonzalez, C and Rodriguez, LF and Cesaroni, R and Ellingsen, SP, Weak and compact radio emission in early massive star formation regions: an ionized jet toward G11.11-0.12P1, The Astrophysical Journal, 796, (2) Article 130. ISSN 0004-637X (2014) [Refereed Article]


Copyright Statement

Copyright 2014 The American Astronomical Society

DOI: doi:10.1088/0004-637X/796/2/130


We report 1.3 cm and 6 cm continuum observations toward the massive proto-stellar candidate G11.110.12P1 using the Karl G. Jansky Very Large Array. We detect a string of four unresolved radio continuum sources coincident with the mid-infrared source in G11P1. The continuum sources have positive spectral indices consistent with a thermal (free-free) ionized jet. The most likely origins of the ionized gas are shocks due to the interaction of a stellar wind with the surrounding high-density material. We also present NIR United Kingdom Infrared Telescope (UKIRT) archival data that show an extended structure detected only at K band (2.2 μm), which is oriented perpendicular to the jet, and that may be scattered light from a circumstellar disk around the massive protostar. Our observations plus the UKIRT archival data thus provide new evidence that a disk/jet system is present in the massive proto-stellar candidate located in the G11.110.12P1 core.

Item Details

Item Type:Refereed Article
Keywords:ISM: individual objects (G11.11−0.12P1) ISM: jets and outflows stars: formation
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Ellingsen, SP (Professor Simon Ellingsen)
ID Code:96746
Year Published:2014
Web of Science® Times Cited:6
Deposited By:Mathematics and Physics
Deposited On:2014-11-19
Last Modified:2017-11-03
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