Early Type Galaxies in the Mid Infrared

Details Early Type Galaxies in the Mid Infrared Early Type Galaxies in the Mid Infrared

2007-01-22

arxiv.org/abs/astro-ph/0701620v1

Astronomy and Astrophysics

Astrophysics

Comments: 8 pages, to appear in the Proceedings of the Conf. "From Stars to Galaxies: Building the Pieces to Build Up the Univ

Scientific paper

We are performing a systematic study of the properties of early-type galaxies in the mid infrared spectral region with the Spitzer Space Telescope. We present here high S/N Spitzer IRS spectra of 17 Virgo early-type galaxies. Thirteen objects of the sample (76%) show a pronounced broad feature (above 10 microns) which is spatially extended and likely of stellar origin. We argue that this feature is (mostly) due to silicate emission from circumstellar envelopes of asymptotic giant branch (AGB) stars. The remaining 4 objects, namely NGC 4486, NGC 4636, NGC 4550 and NGC 4435, are characterized by various levels and type of activity.

Affiliated with

Also associated with

No associations

Rating

Early Type Galaxies in the Mid Infrared 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 Early Type Galaxies in the Mid Infrared, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Early Type Galaxies in the Mid Infrared will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-515840