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A Spitzer IRAC Census of the Asymptotic Giant Branch Populations in Local Group Dwarfs. II. IC 1613
Dale C. Jackson, Evan D. Skillman, Robert D. Gehrz +2
We present Spitzer Space Telescope IRAC photometry of the Local Group dwarf irregular galaxy IC 1613. We compare our 3.6, 4.5, 5.8, and 8.0 micron photometry with broadband optical…
A Spitzer/IRAC Census of the Asymptotic Giant Branch Populations in Local Group Dwarfs. I. WLM
Dale C. Jackson, Evan D. Skillman, Robert D. Gehrz +2
We present Spitzer/IRAC observations at 3.6 and 4.5 microns along with optical data from the Local Group Galaxies Survey to investigate the evolved stellar population of the Local…
On Extending the Mass-Metallicity Relation of Galaxies by 2.5 Decades in Stellar Mass
Henry Lee, Evan D. Skillman, John M. Cannon +4
We report 4.5 micron luminosities for 27 nearby (D < 5 Mpc) dwarf irregular galaxies measured with the Spitzer Infrared Array Camera. We have constructed the 4.5 micron luminosity-…
Hot Dust and PAH Emission at Low Metallicity: A Spitzer Survey of Local Group and Other Nearby Dwarf Galaxies
Dale C. Jackson, John M. Cannon, Evan D. Skillman +4
We present Spitzer Space Telescope 4.5 and 8.0 micron imaging of 15 Local Group and nearby dwarf galaxies. Our sample spans a range of more than one dex in nebular metallicity and…
Spitzer 4.5 micron Luminosity-Metallicity and Mass-Metallicity Relations for Nearby Dwarf Irregular Galaxies
Henry Lee, E. D. Skillman, J. M. Cannon +4
For a sample of 25 dwarf irregular galaxies with distances D < 5 Mpc and measured oxygen abundances, we present results derived from stellar masses and galaxy luminosities from nea…
HI Observations of the Local Group Dwarf WLM
Dale C. Jackson, Evan D. Skillman, John M. Cannon +1
We present Australia Telescope Compact Array mosaic HI imaging of the Local Group dwarf irregular galaxy WLM. We find an integrated flux of 149 Jy km/s and a total HI mass of 3.2 x…