| Issue |
A&A
Volume 540, April 2012
|
|
|---|---|---|
| Article Number | A95 | |
| Number of page(s) | 6 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361/201117858 | |
| Published online | 04 April 2012 | |
Research Note
The discovery based on GLIMPSE data of a protostar driving a bipolar outflow
1 National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, 100012 Beijing, PR China
e-mail: jhyuan@nao.cas.cn
2 Department of Physics, The University of Hong Kong, Hong Kong, PR China
3 Centre for Astrophysics and Planetary Science, School of Physical Sciences, University of Kent, Canterbury, Kent CT2 7NR, UK
Received: 9 August 2011
Accepted: 2 January 2012
We report the discovery based on GLIMPSE data of a proto-stellar system driving a bipolar outflow. The bipolar outflow closely resembles the shape of an hourglass in the infrared. The total luminosity of Ltotal = 5507 L⊙, derived from IRAS fluxes, indicates the ongoing formation of a massive star in this region. The spectral energy distribution (SED) of the driving source is fitted with an online SED fitting tool, which results in a spectral index of about 1.2. This, along with the presence of a bipolar outflow, suggests the detection of a Class I protostar. The driving source indicates prominent infrared excesses in color-color diagrams based on archived 2 MASS and GLIMPSE data, which is in line with an early evolutionary stage of the system.
Key words: ISM: jets and outflows / stars: early-type / stars: formation / stars: protostars
© ESO, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.