Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20910007e&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #100.07; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
We used images from the Spitzer Space Telescope's IRAC (Infrared Array Camera) to study the nature of globular clusters in the elliptical galaxy NGC 4365. Mosaicing, point source extraction, and aperture photometry was done on the images using the Spitzer package MOPEX. We flagged the IRAC sources that matched with globular clusters previously identified in Hubble Space Telescope data. Photometry of the globular clusters from IRAC’s 3.6 and 4.5 micrometer bands were compared to the available photometry from the HST data. Photometry was determined over the available wavelengths (gVIzH, 3.6, 4.5 microns) and compared to several standard stellar population models over a wide range of ages and metallicities. The methods of data processing and globular cluster detection are discussed. This work was done at the Michigan State University REU program funded by the NSF.
Esselman Andrew R.
Hempel Maren
Kundu Anjan
Zepf Stephen E.
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