Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 693659.0, MPI für Astronomie / Publikationen_mpia
Early-stage massive star formation near the Galactic Center: Sgr C
Authors:Kendrew, S.; Ginsburg, A.; Johnston, K.; Beuther, H.; Bally, J.; Cyganowski, C. J.; Battersby, C.
Date of Publication (YYYY-MM-DD):2013
Title of Journal:The Astrophysical Journal Letters
Volume:775
Issue / Number:2
Start Page:id. L50 (6 pp)
Audience:Not Specified
Abstract / Description:We present near-infrared spectroscopy and 1 mm line and continuum observations of a recently identified site of high mass star formation likely to be located in the Central Molecular Zone (CMZ) near Sgr C. Located on the outskirts of the massive evolved H II region associated with Sgr C, the area is characterized by an Extended Green Object (EGO) measuring ~10'' in size (0.4 pc), whose observational characteristics suggest the presence of an embedded massive protostar driving an outflow. Our data confirm that early-stage star formation is taking place on the periphery of the Sgr C H II region, with detections of two protostellar cores and several knots of H2 and Brackett γ emission alongside a previously detected compact radio source. We calculate the cores' joint mass to be ~103 M , with column densities of 1-2 × 1024 cm-2. We show the host molecular cloud to hold ~105 M of gas and dust with temperatures and column densities favorable for massive star formation to occur, however, there is no evidence of star formation outside of the EGO, indicating that the cloud is predominantly quiescent. Given its mass, density, and temperature, the cloud is comparable to other remarkable non-star-forming clouds such as G0.253 in the eastern CMZ.
Free Keywords:infrared: ISM; ISM: jets and outflows; stars: formation
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-637X
URL:http://cdsads.u-strasbg.fr/abs/2013ApJ...775L..50K
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.