Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...659l.165t&link_type=abstract
The Astrophysical Journal, Volume 659, Issue 2, pp. L165-L168.
Astronomy and Astrophysics
Astronomy
1
Ism: Molecules, Line: Profiles, Stars: Abundances, Stars: Evolution, Stars: Formation
Scientific paper
A comparison of the line widths of C17O and CS toward a sample of high-mass protostar objects is used to separate the sample into two groups. The larger line width objects (Δv>3 km s-1 MC1 sources) are shown to have the lowest C17O abundances. They also show evidence of heating by the central young star and have steep density profiles and high mass-to-luminosity (M/L) ratios. The remaining sources show less evidence of heating and have shallower density profiles and smaller M/L ratios. These objects are subdivided into sources with low C17O abundances (MC2 sources) and sources with approximately normal C17O abundances (MC3 sources). The connection between properties related to the core (C17O abundance, density profile) and stellar heating suggests an intimate connection between the cores and the objects forming within them. We propose that this reflects a coupled evolution of the core and the central sources. It is proposed that the identified groups represent an evolutionary sequence in the properties of these massive cores.
Fuller Gary A.
Thomas H. S.
No associations
LandOfFree
The Evolution of Massive Dense Cores 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 The Evolution of Massive Dense Cores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Evolution of Massive Dense Cores will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1683104