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Start Over Subject molecular clouds Facility Spitzer Validation Level 2
1. IRAC/MIPS photometry in Cha I
ID:
ivo://CDS.VizieR/J/ApJ/675/1375
Title:
IRAC/MIPS photometry in Cha I
Short Name:
J/ApJ/675/1375
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a census of circumstellar disks in the Chamaeleon I star-forming region. Using the Infrared Array Camera and the Multiband Imaging Photometer on board the Spitzer Space Telescope, we have obtained images of Chamaeleon I at 3.6, 4.5, 5.8, 8.0, and 24um. To search for new disk-bearing members of the cluster, we have performed spectroscopy on objects that have red colors in these data. Through this work, we have discovered four new members of Chamaeleon I with spectral types of M4, M6, M7.5, and L0.
2. MIPS survey of YSOs in Vela Molecular Ridge-D
ID:
ivo://CDS.VizieR/J/ApJ/671/470
Title:
MIPS survey of YSOs in Vela Molecular Ridge-D
Short Name:
J/ApJ/671/470
Date:
21 Oct 2021
Publisher:
CDS
Description:
A new, unbiased Spitzer MIPS imaging survey (~1.8deg^2^) of the young stellar content of the Vela Molecular Ridge-D (VMR-D) is presented. The survey is complete down to 5 and 250mJy at 24 and 70{mu}m, respectively. A total of 849 sources are detected at 24{mu}m, and 52 of them also have a 70{mu}m counterpart. The VMR-D region is one that we have already partially mapped in dust and gas millimeter emission, and we discuss the correlation between the Spitzer compact sources and the millimeter contours. About half of the 24{mu}m sources are located inside the region delimited by the ^12^CO(1-0) contours, corresponding to only one-third of the full area mapped with MIPS. Therefore, the 24{mu}m source density increases by about 100% moving from outside to inside the CO contours. For the 70{mu}m sources, the corresponding density increase is a factor of 4. About 400 sources of these have a 2MASS counterpart, and we have used this to construct a Ks versus Ks-[24] diagram and to identify the protostellar population inside the cloud.