Star Formation in GLIMPSE360 IRAC 3.6 & 4.5 pick out star formation regions K (2MASS) IRAC [3.6] IRAC [4.5] AFGL490, d=1 kpc BG 2107+49, d=10
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Transcript Star Formation in GLIMPSE360 IRAC 3.6 & 4.5 pick out star formation regions K (2MASS) IRAC [3.6] IRAC [4.5] AFGL490, d=1 kpc BG 2107+49, d=10
Star Formation in GLIMPSE360
IRAC 3.6 & 4.5 pick out star formation regions
K (2MASS)
IRAC [3.6]
IRAC [4.5]
AFGL490, d=1 kpc
BG 2107+49, d=10 kpc
IRAC 3.6 and 4.5 Catalogs pick out
YSOs
“Empty field”
Catalog
stars
GL490 region
YSOs
Simulated cluster at 10 kpc using
YSO grid of models (Robitaille et al. 2006)
IRAC 4.5 discovers shocked outflows
New
Known
radio
outflow
GL490 with
Known
Molecular
outflow
New discoveries
Results and more to come
• We can detect YSOs, outflows, PAH bubbles
– The higher dynamic range than GLIMPSE allows detection
of PAH emission at 3.6, faint outflows, and both massive
and low-mass YSO
• We easily detect star formation regions at 10 kpc
– We detect much smaller SFRs, probably much more distant
• More to come
– Using SED fitting of Catalog stars to fit extinction and find
Infrared Dark clouds
– Determine star formation rate as a function of
Galactocentric radius (Robitaille & Whitney 2010, Povich et
al. 2009/10)