Infrared Properties of Low-Metallicity Galaxies

Details Infrared Properties of Low-Metallicity Galaxies Infrared Properties of Low-Metallicity Galaxies

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..357..215e&link_type=abstract

The Spitzer Space Telescope: New Views of the Cosmos ASP Conference Series, Volume 357, proceedings of the conference held 9-12

Astronomy and Astrophysics

Astronomy

4

Scientific paper

We present new Spitzer photometry of three low-metallicity galaxies. These galaxies have metallicities more than 30 times lower than the solar value and include the two galaxies with the lowest known metallicities, I Zw 18 and SBS 0335-52. Our IRAC and MIPS data represent the first mid- to far-infrared detections for most of these galaxies and allow us for the first time to explore the range of infrared properties of extremely low metallicity galaxies as a class. We derive dust temperatures, dust masses, and optical/infrared luminosities of the galaxies. To put our sample of low-metallicity galaxies into context, we use infrared colors and spectra of galaxies over the full range of metallicities observed in local galaxies to show that there is a transition metallicity below which PAHs are not observed in galaxies.

Affiliated with

Also associated with

No associations

Rating

Infrared Properties of Low-Metallicity Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Infrared Properties of Low-Metallicity Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared Properties of Low-Metallicity Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1240856