IRS Spectra of a Unique Infrared-Varying Galaxy in the IRAC-CF

Details IRS Spectra of a Unique Infrared-Varying Galaxy in the IRAC-CF IRS Spectra of a Unique Infrared-Varying Galaxy in the IRAC-CF

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40146f&link_type=abstract

Spitzer Proposal ID #40146

Computer Science

Scientific paper

A detailed analysis of the 87 multi-epoch mosaics taken by Spitzer/IRAC of the IRAC Dark Calibration Field at 17:40, +69:00 has uncovered numerous objects exhibiting strong variability at 3.6 um -- to our knowledge, the only variable galaxies discovered by Spitzer to date. Happily, one of these is bright enough at 24 um (0.5 mJy) to be accessible with the IRS/LL1 and LL2 in a modest allocation of only 4.1 h facility time, (S/N ~ 7 on the continuum). This object is extremely unlikely to be a foreground star -- and if it is in fact AGN dominated, then its variability, which takes place on timescales of ~ 1 year, ought toprovide a new window on substructures within AGNs. In combination with the moderate-depth ground-based photometry we have in hand, recently-completed HST/F814W observations, Akari/11, 15, and 18 um imaging observations, and approved Palomar spectroscopy, the observations will allow us to unambiguously constrain the nature of this object.

Affiliated with

Also associated with

No associations

Rating

IRS Spectra of a Unique Infrared-Varying Galaxy in the IRAC-CF 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 IRS Spectra of a Unique Infrared-Varying Galaxy in the IRAC-CF, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IRS Spectra of a Unique Infrared-Varying Galaxy in the IRAC-CF will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1747798