A Search for Optical Outflows from Brown Dwarfs in the Chamaeleon I Molecular Cloud

Details A Search for Optical Outflows from Brown Dwarfs in the Chamaeleon I Molecular Cloud A Search for Optical Outflows from Brown Dwarfs in the Chamaeleon I Molecular Cloud

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...643..985w&link_type=abstract

The Astrophysical Journal, Volume 643, Issue 2, pp. 985-994.

Astronomy and Astrophysics

Astronomy

7

Ism: Herbig-Haro Objects, Ism: Individual: Name: Chamaeleon I, Ism: Jets And Outflows, Stars: Formation, Stars: Low-Mass, Brown Dwarfs

Scientific paper

A deep and wide-field HH object survey has been carried out toward the Chamaeleon I (Cha I) molecular cloud with a sky coverage of 1deg×2deg, which embraces the entire Cha I molecular cloud. In total, 18 HH objects have been detected, including the previously known objects HH 48-51. The newly discovered HH objects are named HH 905-918. The possible exciting sources of the detected HH objects are discussed based on the morphology and locations of the HH objects and on results of previous surveys. Although more than 40 brown dwarfs or brown dwarf candidates have been detected in Cha I, no compelling evidence for optical outflows from brown dwarfs has been found in our images at the detection limit of 2.3×10-20 W m-2 arcsec-2 (3 σ) in the [S II] λλ6717, 6731 emission. The typical peak brightness of HH objects in Cha I is about 20 times above our detection limit. We conclude that the brightness of optical outflows from substellar objects should be about 20 times lower than that of outflows from young solar-type stars if all the HH objects detected in Cha I are driven by young stars. In three cases-i.e., HH 51, 908, and 909-however, there are hints of a connection between HH objects and the nearby brown dwarfs or very low mass stars.

Affiliated with

Also associated with

No associations

Rating

A Search for Optical Outflows from Brown Dwarfs in the Chamaeleon I Molecular Cloud does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Search for Optical Outflows from Brown Dwarfs in the Chamaeleon I Molecular Cloud, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Search for Optical Outflows from Brown Dwarfs in the Chamaeleon I Molecular Cloud will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1859018