Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.281l..53w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. Vol. 281, No. 3, p. L53 - L56
Astronomy and Astrophysics
Astronomy
35
Stars: Formation -- Ism: Clouds -- Ism: Kinematics And Dynamics -- Ism: Individual: Ngc 1333-Iras2, Protostars: Collapse, Protostars: Sub-Mm Radiation, Protostars: Molecules, Protostars: Radiative Transfer, Protostars: Models
Scientific paper
Observations are presented of HCO+ (J=4→3) emission towards the Class 0 protostar NGC 1333-IRAS 2, showing a self-absorbed, asymmetric, double-peaked spectral line profile, with the blue peak more intense than the red. Such a profile is expected in the infalling envelopes of protostars. A non-local, spherically symmetric, exact Λ-iteration radiative transfer code is used to generate a model HCO+ spectrum for an infalling envelope, which is found to be in good agreement with the observations, supporting the protostellar infall interpretation. The total mass and luminosity of the protostar required by the model fit to the spectral line data are consistent with those previously derived, although the exact radial dependence of parameters such as density and velocity is not well constrained. This source therefore becomes one of only a small number of protostars in which infall has been directly observed.
Andre Pascal
Buckley David H.
Greaves Jane S.
Holland Wayne S.
Ward-Thompson Derek
No associations
LandOfFree
Evidence for protostellar infall in NGC 1333-IRAS 2. 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 Evidence for protostellar infall in NGC 1333-IRAS 2., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for protostellar infall in NGC 1333-IRAS 2. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-773869