Sasmirala Individual Information for IRAS 04103-2838
Description
IRAS 04103-2838 is a disturbed ultra-luminous infrared galaxy at a redshift of z = 0.1175 with an active nucleus classified optically either as H II or LINER [veilleux_optical_1999, veilleux_new_1999] but also as Sy 2 [yuan_role_2010]. The presence of a Compton-thick AGN was demonstrated through deep X-ray observations [teng_xmm-newton_2008], confirming the type II nature of this source. IRAS 04103-2838 was observed with Spitzer/IRS in LR staring mode. The MIR spectrum indicates star formation with silicate 10 μm absorption, PAH emission and a red spectral slope in νFν-space (see also [imanishi_spitzer_2007]). IRAS 04103-2838 was observed with T-ReCS in the Qa filter in 2008 and a compact MIR nucleus was detected [imanishi_subaru_2011]. The nucleus is possibly marginally resolved (FWHM ~ 0.63arcsec ~ 1.3 kpc), but this needs to be verified with at least a second epoch of subarcsecond MIR imaging. Our measured nuclear Qa flux is consistent with the value from [imanishi_subaru_2011] and also the IRS spectrum. Therefore, we use the latter to compute the nuclear 12 μm continuum emission estimates corrected for the silicate 10 μm feature.
- [imanishi_spitzer_2007] Masatoshi Imanishi, C. C. Dudley, Roberto Maiolino, Philip R. Maloney, Takao Nakagawa, and Guido Risaliti. A spitzer IRS low-resolution spectroscopic search for buried AGNs in nearby ultraluminous infrared galaxies: A constraint on geometry between energy sources and dust . ApJS , 171 pp. 72–100, July 2007.
- [imanishi_subaru_2011] Masatoshi Imanishi, Keisuke Imase, Nagisa Oi, and Kohei Ichikawa. Subaru and gemini high spatial resolution infrared 18 μm imaging observations of nearby luminous infrared galaxies . AJ , 141 pp. 156, May 2011.
- [teng_xmm-newton_2008] Stacy H. Teng, S. Veilleux, A. S. Wilson, A. J. Young, D. B. Sanders, and N. M. Nagar. XMM-Newton detection of a compton-thick AGN in the 1 jy ULIRG/LINER f04103-2838 . ApJ , 674 pp. 133–141, February 2008.
- [veilleux_new_1999] Sylvain Veilleux, D. B. Sanders, and D.-C. Kim. New results from a near-infrared search for hidden broad-line regions in ultraluminous infrared galaxies . ApJ , 522 pp. 139–156, September 1999.
- [veilleux_optical_1999] Sylvain Veilleux, D.-C. Kim, and D. B. Sanders. Optical spectroscopy of the IRAS 1 JY sample of ultraluminous infrared galaxies . ApJ , 522 pp. 113–138, September 1999.
- [yuan_role_2010] T.-T. Yuan, L. J. Kewley, and D. B. Sanders. The role of starburst-active galactic nucleus composites in luminous infrared galaxy mergers: Insights from the new optical classification scheme . ApJ , 709 pp. 884–911, February 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.