Collimated molecular jets from high-mass young stars: IRAS 18151-1208.

Details Collimated molecular jets from high-mass young stars: IRAS 18151-1208. Collimated molecular jets from high-mass young stars: IRAS 18151-1208.

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...425..981d&link_type=abstract

Astronomy and Astrophysics, v.425, p.981-995 (2004)

Astronomy and Astrophysics

Astrophysics

49

Molecular Data, Shock Waves, Stars: Formation, Infrared: Ism, Infrared: Stars, Ism: Herbig-Haro Objects

Scientific paper

Recent near-IR images of massive star forming regions have revealed two collimated jets in the IRAS 18151-1208 region, one of which is almost a parsec in length (Varricatt et al.). Follow-up high-spectral-resolution echelle spectroscopy and 2-dimensional ``integral field'' spectroscopy of the associated molecular shock features are presented here. From these data kinematic information and excitation maps are extracted, which show that the two jets are morphologically, kinematically and energetically similar to their counterparts from low mass protostars. The close association between the H2 emission features and the high-velocity CO emission presented by Beuther et al. also suggests that the CO represents gas entrained by these two very collimated jets. From the mass and momentum of the molecular gas, and the luminosity of the H2 features, it is clear that the flows must be powered by massive sources. To all intents and purposes, the molecular jets appear to be scaled-up versions of low-mass YSO jets. Collectively, the observations add further support to the idea that massive stars are formed through vigorous disk accretion, and that, while in their earliest stages of evolution, massive protostars drive collimated jets.
Appendices are only available in electronic form at\ http://www.edpsciences.org}

Affiliated with

Also associated with

No associations

Rating

Collimated molecular jets from high-mass young stars: IRAS 18151-1208. 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 Collimated molecular jets from high-mass young stars: IRAS 18151-1208., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collimated molecular jets from high-mass young stars: IRAS 18151-1208. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-895157