2MASS Observations of the Magellanic Clouds

Details 2MASS Observations of the Magellanic Clouds 2MASS Observations of the Magellanic Clouds

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.0809v&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #08.09; Bulletin of the American Astronomical Society, Vol. 30, p.1259

Astronomy and Astrophysics

Astronomy

Scientific paper

The Two Micron All Sky Survey (2MASS) has observed the Large Magellanic Cloud (LMC) and >70 square degrees of the Small Magellanic Cloud (SMC), at J (1.25 mu m), H (1.65 mu m), and K_s (2.17 mu m), as part of its routine nightly operations with an automated 1.3-m telescope at CTIO, Chile. The camera observes the sky in the three channels simultaneously, using 256 x 256 HgCdTe detector arrays. The survey samples the sky in 6deg x 8{farcm }3 scans. The 2MASS Production Processing System provides final atlas images and source extractions with precise photometric calibration and astrometric positions. The survey's 10sigma sensitivity is 15.8 mag at J, 15.1 at H, and 14.3 at K_s. 2MASS will ultimately detect ~ 10(7) point sources in each galaxy and will support analyses of the ages, luminosity and mass functions, and metallicities of the red stellar populations, and provide a census of AGB and carbon stars, as well as extinction maps, across both the LMC and SMC. Here we also compare the 2MASS source extractions with those made by the Midcourse Space Experiment (MSX) for both galaxies, which extends the coverage for sources from wavelength 1--26 mu m.

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