Sasmirala Individual Information for MCG-1-5-47
Description
MCG-1-5-47 is an edge-on spiral galaxy at a redshift of z = 0.0172 (D ~ 67.7 Mpc) with a Sy 2 nucleus [veron-cetty_catalogue_2010], which was first discovered in hardest X-rays with INTEGRAL [bird_third_2007, bodaghee_description_2007, masetti_unveiling_2008]. Spitzer/IRAC and IRS observations of this object are available, and a compact nuclear source embedded in the narrow host emission is visible in the IRAC images. The IRS LR/HR staring-mode PBCD spectrum is very noisy and partly flagged in the N-band. No spectral features apart from the continuum slope, which peaks at ~ 15 μm, can be identified. MCG-1-5-47 was observed with VISIR in five narrow-band filters covering the whole N-band in 2008 (unpublished, to our knowledge). A compact MIR nucleus is only detected in the two longest-wavelength filters, which appears possibly marginally resolved in the B11.7 filter (FWHM ~ 0.4arcsec ~ 130 pc) but not in the B12.4 filter image. Therefore, it remains uncertain, whether the nucleus of MCG-1-5-47 is truly resolved at subarcsecond resolution in the MIR. The nuclear photometry is on average ~ 57% lower than the Spitzer spectrophotometry. The fact that the nucleus has not been detected at shorter wavelengths might indicate the presence of a silicate 10 μm absorption feature in the projected central ~ 100 pc of MCG-1-5-4.
- [bird_third_2007] A. J. Bird, A. Malizia, A. Bazzano, E. J. Barlow, L. Bassani, A. B. Hill, G. Bélanger, F. Capitanio, D. J. Clark, A. J. Dean, M. Fiocchi, D. Götz, F. Lebrun, M. Molina, N. Produit, M. Renaud, V. Sguera, J. B. Stephen, R. Terrier, P. Ubertini, R. Walter, C. Winkler, and J. Zurita. The third IBIS/ISGRI soft gamma-ray survey catalog . ApJS , 170 pp. 175–186, May 2007.
- [bodaghee_description_2007] A. Bodaghee, T. J.-L. Courvoisier, J. Rodriguez, V. Beckmann, N. Produit, D. Hannikainen, E. Kuulkers, D. R. Willis, and G. Wendt. A description of sources detected by INTEGRAL during the first 4 years of observations . A&A , 467 pp. 585–596, May 2007.
- [masetti_unveiling_2008] N. Masetti, E. Mason, L. Morelli, S. A. Cellone, V. A. McBride, E. Palazzi, L. Bassani, A. Bazzano, A. J. Bird, P. A. Charles, A. J. Dean, G. Galaz, N. Gehrels, R. Landi, A. Malizia, D. Minniti, F. Panessa, G. E. Romero, J. B. Stephen, P. Ubertini, and R. Walter. Unveiling the nature of INTEGRAL objects through optical spectroscopy. VI. a multi-observatory identification campaign . A&A , 482 pp. 113–132, April 2008.
- [veron-cetty_catalogue_2010] M.-P. Véron-Cetty and P. Véron. A catalogue of quasars and active nuclei: 13th edition . A&A , 518 pp. 10, July 2010.
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.