Sasmirala Individual Information for IRAS 09149-6206
Description
IRAS 09149-6206 is a Seyfert galaxy at a low Galactic latitude and a redshift of z = 0.0573 (D ~ 249 Mpc) hosting a Sy 1 nucleus [perez_iras_1989]. It was observed with Spitzer/IRAC, IRS and MIPS and appears slightly resolved in all corresponding images. Our IRAC 5.8 and 8.0 μm photometry matches the values published in [kishimoto_mapping_2011]. The IRS LR mapping-mode spectrum exhibits silicate 10 and 18 μm emission, no prominent PAH emission and a flat spectral slope in νFν-space. IRAS 09149-6206 was observed with VISIR in two narrow N-band filters in 2009 where the MIR nucleus remained unresolved. Our measurement of the nuclear fluxes also agrees with the values published in [kishimoto_mapping_2011] and the Spitzer spectrophotometry. The latter authors also observed the object interferometrically with MIDI using several baselines and could marginally resolve the nuclear MIR structure of IRAS 09149-6206 (see also [burtscher_diversity_2013]).
- [burtscher_diversity_2013] L. Burtscher, K. Meisenheimer, K. R. W. Tristram, W. Jaffe, S. F. Hönig, R. I. Davies, M. Kishimoto, J.-U. Pott, H. Röttgering, M. Schartmann, G. Weigelt, and S. Wolf. A diversity of dusty AGN tori. data release for the VLTI/MIDI AGN large program and first results for 23 galaxies . A&A , 558 pp. 149, October 2013.
- [kishimoto_mapping_2011] M. Kishimoto, S. F. Hönig, R. Antonucci, F. Millour, K. R. W. Tristram, and G. Weigelt. Mapping the radial structure of AGN tori . A&A , 536 pp. 78, December 2011.
- [perez_iras_1989] E. Perez, A. Manchado, P. Garcia-Lario, and S. R. Pottasch. IRAS 09149-6206, a new seyfert i galaxy . A&A , 215 pp. 262–265, May 1989.
Images
Optical image (DSS, red filter). Displayed are the central 4 arcmin with North being up and East to the left. The colour scaling is linear with white corresponding to the median background (BG) and black to the 0.01% pixels with the highest intensity.
Spitzer MIR images. Displayed are the inner 40 arcsec with North being up and East to the left. The colour scaling is logarithmic with white corresponding to median BG and black to the 0.1% pixels with the highest intensity. The label in the bottom left states instrument and central wavelength of the filter in micron (I: IRAC, M: MIPS).
Subarcsecond-resolution MIR images sorted by increasing filter central wavelength. Displayed are the inner 4 arcsec with North being up and East to the left. The colour scaling is logarithmic with white corresponding to median BG and black to the 75% of the highest intensity of all images in units of sig_bg. The inset image (where present; either bottom or top right) shows the central arcsecond of the PSF from the calibrator star, scaled to match the science target. The labels in the bottom left state instrument and filter names (C: COMICS, M: Michelle, T: T-ReCS, V: VISIR).
SEDs
MIR SED. The description of the symbols in all the SED plots (where present) is the following: Grey crosses and solid lines mark the Spitzer/IRAC, MIPS and IRS data. The colour coding of the other symbols is as follows: green for COMICS, magenta for Michelle, blue for T-ReCS and red for VISIR data. Darker-coloured solid lines mark spectra of the corresponding instrument. The black filled circles mark the nuclear 12 and 18 micron continuum emission estimate from the data (where present). The ticks on the top axis mark positions of common MIR emission lines, while the light grey horizontal bars mark wavelength ranges affected by the silicate 10 and 18 micron features.