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Weak and compact radio emission in early massive star formation regions: an ionized jet toward G11.11–0.12P1
journal contribution
posted on 2023-05-18, 05:15 authored by Rosero, V, Hofner, P, McCoy, M, Kurtz, S, Menten, KM, Wyrowski, F, Araya, ED, Loinard, L, Carrasco-Gonzalez, C, Rodriguez, LF, Cesaroni, R, Simon EllingsenSimon EllingsenWe report 1.3 cm and 6 cm continuum observations toward the massive proto-stellar candidate G11.11–0.12P1 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 G11.11–0.12P1 core.
History
Publication title
The Astrophysical JournalVolume
796Article number
130Number
130Pagination
1-7ISSN
0004-637XDepartment/School
School of Natural SciencesPublisher
Univ Chicago PressPlace of publication
1427 E 60Th St, Chicago, USA, Il, 60637-2954Rights statement
Copyright 2014 The American Astronomical SocietyRepository Status
- Open