ESO 33-2 is a spiral galaxy at a redshift of z = 0.0181 (D ~ 82.3 Mpc) hosting a radio-quiet Sy 2 nucleus [veron-cetty_catalogue_2010]. The [O III] emission is extended by ~ 1.5arcsec ~ 0.6 kpc in the north-south directions (PA~ 5∘; [schmitt_hubble_2003]). After first being detected in the MIR with IRAS, ESO 33-2 was observed with Spitzer/IRAC, IRS and MIPS and appears almost point-like without non-nuclear emission in all corresponding images. IRAC photometry was published by [gallimore_infrared_2010] and agrees with our IRAC 5.8 and 8.0 μm measurements well. The IRS LR mapping-mode spectrum displays weak silicate 10 μm absorption, no significant PAH emission features, and a shallow emission peak at ~ 12 μm in νFν-space (see also [buchanan_spitzer_2006, wu_spitzer/irs_2009, tommasin_spitzer_2008, tommasin_spitzer-irs_2010, gallimore_infrared_2010]). ESO 33-2 was observed in the broad N-band filter with T-ReCS in 2004. A compact nuclear source was detected. The emission is possibly extended (FWHM ~ 0.85arcsec ~ 300 pc), but this has to be verified with at least another epoch of subarcsecond MIR imaging. The measured nuclear flux agrees with the Spitzer spectrophotometry well, but it would be significantly lower if the presence of subarcsecond-extended emission can be verified.
Object | RA [deg] | Dec [deg] | Filter | Image | Info | λ_c [um] | HWHM [um] | Instr | Pix. size [arcsec/pix] | T_exp [s] | Mode | Chop Throw [arcsec] | Chop Angle [deg] | Rot [deg] | Prog Id | Cal. Star | Cal. Date | Date Obs. | Factor [mJy/ct] | Err. Factor [mJy/ct] | Cal. Flux [mJy] | Upper Lim. Gauss? | F_Gauss [mJy] | E(F_Gauss) [mJy] | Upper Lim. PSF? | F_PSF [mJy] | E(F_PSF) [mJy] | Cal. Maj. [arcsec] | Cal. Min. [arcsec] | Cal. PA. [deg] | Maj. Ax [arcsec] | Min. Ax [arcsec] | Pos. Ang. [deg] |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ESO 33-2 | 73.995833 | -75.541111 | N | ESO033-G002_N_2004-10-24T04-24.fits | [Details] | 10.36 | 2.64 | TRECS | 0.09 | 717.0 | PARA | 15.0 | -90.0 | 0.0 | GS-2004A-Q-14 | HD18293 | 2004-10-24T05:09:36Z | 2004-10-24T04:24:58Z | 0.0065 | 7e-05 | 8000.0 | False | 168.9 | 3.3 | False | 104.9 | 3.0 | 0.72 | 0.62 | 177.0 | 0.89 | 0.79 | 133.0 |