PAH emission from the dust lane of an elliptical galaxy with the Spitzer IRS

Details PAH emission from the dust lane of an elliptical galaxy with the Spitzer IRS PAH emission from the dust lane of an elliptical galaxy with the Spitzer IRS

2010-05-24

arxiv.org/abs/1005.4248v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 4 figures, accepted for publication in the ApJL

Scientific paper

Spitzer and AKARI observations have found that polycyclic aromatic hydrocarbons (PAHs) are present in nearby elliptical galaxies, but their spatial distributions are still unknown. In order to investigate their distributions, we performed deep spectral mapping observations of the PAH-detected elliptical galaxy NGC4589, a merger remnant with a minor-axis optical dust lane. As a result, we obtain clear evidence that the PAH 11.3 um emission comes predominantly from the dust lane of the galaxy. We also detect molecular hydrogen line emissions from the dust lane. The PAH 17 um emission is distributed differently from the PAH 11.3 um emission, and more similarly to the dust continuum emission. From their distinctive distributions, we suggest that the PAHs responsible for the 11.3 um feature are secondary products through the evolution of the ISM brought in by the merger.

Affiliated with

Also associated with

No associations

Rating

PAH emission from the dust lane of an elliptical galaxy with the Spitzer IRS 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 PAH emission from the dust lane of an elliptical galaxy with the Spitzer IRS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PAH emission from the dust lane of an elliptical galaxy with the Spitzer IRS will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-118739