The IRAC Brown Dwarf/Disk Evolution/Star Formation GTO Programs

Program TargetsGoals Observing Mode SensitivtyTime
Nearby Stars< 5 pc Image a samples of nearby (<30 pc) stars to search for brown dwarf companions IRAC PHOT/MAP7.6 hours
Young Stars 9.1 hours
MLT 15.9 hours
Stars with Planets 7.1 hours
Brown DwarfsIRAC Survey Orion A & B GMCs Detect all brown dwarfs down to 10 Mjup, Study the evolution of circumstellar envelopes and disks, Investigate the distribution of young starsIRAC PHOT/MAP3.6um:11uJy
4.5um:12uJy
5.8um:26uJy
8.0um:38uJy
39.9 hours
Deep Trapezium SurveySearch for Brown Dwarfs below 10 Mjup 1.0 hours
HyadesSearch for Brown Dwarfs down to 20 Mjup 17.8 hours
PleiadesSearch for Brown Dwarfs down to 15 Mjup 23.8 hours
Chameleon I, Rho Ophiucus and IC 348Search for brown dwarfs to masses < 1 Mjup 20.4 hours
Disk Evolution and Planet FormationClusters with ages of 1-10 MyrStudy dust evolution through the epoch of planet formation (1 - 10 Myr)IRAC PHOT/MAP + MIPS SCAN MAP 55.3 hours
Star Forming Regions: Spatial Structure and Evolution Young Stellar Clusters within < 1 kpc
Obtain a complete stellar/protostellar census to hydrogen burning limit and below; Classify stars and protostars (Class 0/I/II); Investigate the spatial distribution of young stars; Study the evolution of circumstellar envelopes and disks; Determine the cluster luminosity functions and IMFs. IRAC PHOT/MAP + MIPS SCAN MAP <500 pc
3.6um:54uJy
4.5um:48uJy
5.8um:62uJy
8.0um:80uJy
> 500 pc
3.6um:13uJy
4.5um:14uJy
5.8um:32uJy
8.0um:46uJy
46.3 hours
MIPS Survey of Orion A & B GMCs Complement IRAC survey of the Orion GMCs; Search for protostars; Study the evolution of circumstellar envelopes and disks MIPS SCAN MAP 10.4 hours
High Mass Star Forming Regions Determine the spatial density of low mass stars near deeply embedded high mass protostars IRAC PHOT/MAP 1.1 hours
Total time-- - - 255.7 hours

IRAC/MIPS/IRS/SSC Debris Disk Program

Fantastic Four IRAC+MIPS+IRS10 hours
Total time 11.25 (preliminary) hours

Current IRAC working groups