A mid-infrared study of the class 0 cluster in LDN 1448

Creators: O'Linger, JoAnn C.; Cole, David M.; Ressler, Michael E.; Wolf-Chase, Grace

Abstract

We present ground-based mid-infrared observations of Class 0 protostars in LDN 1448. Of the five known protostars in this cloud, we detected two, L1448N:A and L1448C, at 12.5, 17.9, 20.8, and 24.5 μm, and a third, L1448 IRS 2, at 24.5 μm. We present high-resolution images of the detected sources and photometry or upper limits for all five Class 0 sources in this cloud. With these data we are able to augment existing spectral energy distributions for all five objects and place them on an evolutionary status diagram.

Additional Information

© 2006. The American Astronomical Society. Received 2002 April 11; accepted 2005 December 16. We thank the IRTF support staff for assistance with the data acquisition. J. O. acknowledges financial support by NASA grants to the Wide-Field Infrared Explorer Project and the Space Infrared Telescope Facility Project at the Jet Propulsion Laboratory, California Institute of Technology. Many thanks to Michael Werner, Vincent Mannings, and our anonymous referee for helpful suggestions that improved this paper immensely. This research has made extensive use of the Abstract Service maintained by the NASA Astrophysics Data System, as well as the Simbad and Vizier databases archived at CDS, Strasbourg, France. This publication makes use of data products from 2MASS, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This research has made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Portions of this work were carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Development of MIRLIN was supported by the Jet Propulsion Laboratory's Director's Discretionary Fund, and its continued operation is funded by an SR+T award from NASA's Office of Space Science.

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