MCG-5-23-16 is an early-type galaxy at a redshift of z = 0.0085 (D ~ 39.5 Mpc) with an AGN classified as a Sy 1.9 [wilson_kinematics_1985] with broad emission lines in the near-infrared [goodrich_infrared_1994]. It possesses an extended NLR on each side of the nucleus (~ 1arcsec ~ 190 pc; PA~ 40∘; [ferruit_hubble_2000]). MCG-5-23-16 was extensively studied in the X-rays and belongs to the nine-month BAT AGN sample. The first MIR observations were performed by [frogel_8-13_1982] and [glass_mid-infrared_1982], followed by first subarcsecond-resolution N-band imaging with ESO 3.6 m/TIMMI2 in 2002 [raban_core_2008]. An unresolved MIR nucleus was detected in the TIMMI2 images, which is also the case for the Spitzer/IRAC images where no host emission is evident. The IRS LR staring-mode spectrum shows silicate 10 μm absorption, very weak PAH emission, and a red spectral slope with an emission peak at ~ 18 μm in νFν-space (see also [weaver_mid-infrared_2010]). MCG-05-23-16 was observed with VISIR in three different narrow N-band filters in 2006 and 2007 [honig_dusty_2010-1, reunanen_vlt_2010] and in two Q-band filters in 2005 and 2007 ([reunanen_vlt_2010]; and unpublished, to our knowledge). In addition, a VISIR LR N-band spectrum was obtained in 2007 [honig_dusty_2010-1]. An unresolved MIR nucleus was detected in all images taken under good conditions, while the PAH1 and Q2 images suffer from non-diffraction-limited conditions. The VISIR spectrophotometry is consistent with the Spitzer spectrophotometry and also the older MIR photometry mentioned above. This indicates that there have been no significant flux changes over the last ~ 25 years. Note that the nucleus of MCG-5-23-16 was partly resolved with MIDI interferometric observations, which provides size constraints of 1.5 to 4 pc for the MIR emitter [tristram_parsec-scale_2009, burtscher_diversity_2013].
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] |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MCG-5-23-16 | 146.917500 | -30.948611 | ARIII | MCG-05-23-016_ARIII_2007-01-30T06-32.fits | [Details] | 8.99 | 0.14 | VISIR | 0.075 | 699.0 | PARA | 8.0 | 45.0 | 0.0 | 078.B-0303(A) | HD75691 | 2007-01-30T05:54:14Z | 2007-01-30T06:33:07Z | 0.06138 | 0.00101 | 17864.4 | False | 348.6 | 6.0 | False | 414.0 | 13.1 | 0.36 | 0.31 | 68.0 | 0.3 | 0.28 | 73.0 |
MCG-5-23-16 | 146.917500 | -30.948611 | PAH1 | MCG-05-23-016_PAH1_2007-01-30T07-09.fits | [Details] | 8.59 | 0.42 | VISIR | 0.127 | 30.0 | PARA | 8.0 | 0.0 | -50.0 | 078.B-0303(A) | HD75691 | 2007-01-30T05:26:53Z | 2007-01-30T07:09:07Z | 0.18401 | 0.00292 | 19055.1 | False | 340.1 | 28.4 | False | 259.2 | 42.1 | 0.38 | 0.33 | 35.0 | 0.44 | 0.38 | 22.0 |
MCG-5-23-16 | 146.917500 | -30.948611 | PAH2_2 | MCG-05-23-016_PAH2_2_2006-03-12T02-38.fits | [Details] | 11.88 | 0.37 | VISIR | 0.075 | 361.0 | PERP | 10.0 | 0.0 | 0.0 | 076.B-0599(A) | HD75691 | 2006-03-12T02:24:00Z | 2006-03-12T02:38:24Z | 0.0237 | 0.00028 | 10819.2 | False | 572.0 | 9.3 | False | 572.5 | 10.3 | 0.35 | 0.34 | 55.0 | 0.35 | 0.34 | 105.0 |
MCG-5-23-16 | 146.917500 | -30.948611 | PAH2_2 | MCG-05-23-016_PAH2_2_2007-01-30T06-40.fits | [Details] | 11.88 | 0.37 | VISIR | 0.075 | 361.0 | PARA | 8.0 | 45.0 | 0.0 | 078.B-0303(A) | HD75691 | 2007-01-30T05:45:36Z | 2007-01-30T06:40:19Z | 0.02386 | 0.00061 | 10819.2 | False | 638.2 | 16.5 | False | 706.8 | 36.9 | 0.38 | 0.35 | 50.0 | 0.35 | 0.33 | 70.0 |
MCG-5-23-16 | 146.917500 | -30.948611 | Q1 | MCG-05-23-016_Q1_2007-01-30T06-24.fits | [Details] | 17.65 | 0.83 | VISIR | 0.075 | 684.0 | PARA | 8.0 | 45.0 | 0.0 | 078.B-0303(A) | HD75691 | 2007-01-30T05:54:14Z | 2007-01-30T06:24:29Z | 0.43501 | 0.01778 | 5124.0 | False | 1456.7 | 60.6 | False | 1391.1 | 89.3 | 0.47 | 0.45 | 79.0 | 0.48 | 0.46 | 53.0 |
MCG-5-23-16 | 146.917500 | -30.948611 | Q2 | MCG-05-23-016_Q2_2005-12-18T08-31.fits | [Details] | 18.72 | 0.88 | VISIR | 0.075 | 855.0 | PERP | 10.0 | 0.0 | 0.0 | 076.B-0599(A) | HD75691 | 2005-12-18T08:52:48Z | 2005-12-18T08:31:12Z | 0.4058 | 0.00535 | 4590.6 | False | 1456.6 | 42.4 | False | 1386.9 | 31.9 | 0.49 | 0.46 | 104.0 | 0.5 | 0.48 | 107.0 |