L1340: How Do Intermediate-Mass Stars Impact Their Natal Environment?

Details L1340: How Do Intermediate-Mass Stars Impact Their Natal Environment? L1340: How Do Intermediate-Mass Stars Impact Their Natal Environment?

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50691f&link_type=abstract

Spitzer Proposal ID #50691

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Scientific paper

L1340 is a mid-Galactic-latitude (b~11.5) star-forming cloud which contains several intermediate-mass stars of spectral types B5 and later. It is an ideal testbed for studying the effects such stars have on an isolated, compact cloud. L1340 was specifically chosen to bridge the gap between Spitzer studies of low- and high-mass star formation modes in other clouds. Through ground-based multi- wavelength continuum and spectral line observations, we have found a series of bubble-like structures within this cloud that appear to be associated with the intermediate-mass stars. Additionally, we have imaged dozens of cold dust cores around the edges of these structures using SCUBA, many of which exhibit outflow activity and other hallmarks of extreme youth. These features make L1340 unique among known molecular clouds within 600 parsecs. Therefore we propose to map the L1340 cloud with IRAC and MIPS in order to: 1) Investigate the prevalence of 'bubbles within bubbles' in this relatively nearby, isolated, intermediate-mass star-forming cloud. 2) Take a complete census of the protostellar population associated with our submillimeter cores using the unprecedented sensitivity of IRAC and MIPS. 3) Analyze the spatial distributions of Young Stellar Objects (YSOs) within the cloud boundaries for indications of possible sequential, or triggered, star formation.

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