Physics
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40569b&link_type=abstract
Spitzer Proposal ID #40569
Physics
Scientific paper
This proposal is a partial resubmission of the Cycle-3 program 30919, PI S. Birkmann. Two targets of that program were not observed because of an error during peak-up acquisition. Our initial sample consists of 13 massive pre-stellar core candidates established using the ISOPHOT Serendipity Survey (ISOSS) and submm and molecular line observations. These were successfully observed with IRAC and MIPS during GO Cycle-2, and despite their early evolutionary stage indicated by low dust and gas kinetic temperatures all of them show embedded 24 um sources that may correspond to extremely young protostellar objects. To be able to characterize the physical conditions in the discovered MIR sources we selected a subsample of six objects for follow-up IRS observations in Cycle-3 which are partly accomplished. Based on the Spitzer photometric data they are believed to represent different evolutionary stages, and the two sources not observed constitute the most extreme cases. Via radiative transfer modeling and warm gas diagnostics we aim to identify the nature of the discovered sources and place them in an evolutionary context. To achieve this, it is mandatory to include the missing sources and therefore we propose to carry out the observations towards them.
Birkmann Stephan
Hennemann Martin
Lemke Dietrich
Steinacker Juergen
No associations
LandOfFree
Completing the IRS spectroscopy of young massive protostars 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 Completing the IRS spectroscopy of young massive protostars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Completing the IRS spectroscopy of young massive protostars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1749536