Sasmirala Individual Information for LEDA 170194
Description
LEDA 170194 is a low-inclination spiral galaxy at a redshift of z = 0.0367 (D ~ 173 Mpc) with a little-studied Sy 2 nucleus [veron-cetty_catalogue_2010], which was discovered with RXTE and INTEGRAL in X-rays [sazonov_identification_2005, masetti_unveiling_2006-1]. It also belongs to the nine-month BAT AGN sample. No MIR observations are reported in the literature and no archival Spitzer data are available for LEDA 170194. It appears as a compact source in the WISE images. We observed this object with VISIR in three narrow N-band filters in 2009 and detected an unresolved nucleus without further host emission. The flux uncertainties are too large to constrain the nuclear MIR SED.
- [masetti_unveiling_2006-1] N. Masetti, E. Mason, L. Bassani, A. J. Bird, E. Maiorano, A. Malizia, E. Palazzi, J. B. Stephen, A. Bazzano, A. J. Dean, P. Ubertini, and R. Walter. Unveiling the nature of INTEGRAL objects through optical spectroscopy. II. the nature of four unidentified sources . A&A , 448 pp. 547–556, March 2006.
- [sazonov_identification_2005] S. Sazonov, E. Churazov, M. Revnivtsev, A. Vikhlinin, and R. Sunyaev. Identification of 8 INTEGRAL hard x-ray sources with chandra . A&A , 444 pp. L37–L40, December 2005.
- [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.
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.