Sasmirala Individual Information for LEDA 13946
Description
LEDA 13946 is the smaller of a pair of two interacting spiral galaxies at a redshift of z = 0.0365 (D ~ 166 Mpc) with ESO 201-4 being the northern component (nuclear separation ~ 28arcsec). It harbours a little-studied Sy 2 nucleus [parisi_accurate_2009] that belongs to the nine-month BAT AGN sample. LEDA 13946 has no reported MIR detection in the literature and appears as a compact source blended with ESO 201-4 in the WISE images. A Spitzer/IRS LR staring-mode spectrum is available but suffers from low S/N. It indicates strong PAH emission, at best weak silicate absorption, and a red spectral slope in νFν-space, i.e., dominating star formation. We observed LEDA 13946 with VISIR in three narrow N-band filters in 2009 but failed to detect any emission. The corresponding flux upper limits are less stringent than the IRS spectrum. Therefore, we use the latter to compute an upper limit on the 12 μm continuum emission estimate on the AGN in LEDA 13946.
- [parisi_accurate_2009] P. Parisi, N. Masetti, E. Jiménez-Bailón, V. Chavushyan, A. Malizia, R. Landi, M. Molina, M. Fiocchi, E. Palazzi, L. Bassani, A. Bazzano, A. J. Bird, A. J. Dean, G. Galaz, E. Mason, D. Minniti, L. Morelli, J. B. Stephen, and P. Ubertini. Accurate classification of 17 AGNs detected with Swift/BAT . A&A , 507 pp. 1345–1358, December 2009.
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.
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.