Sasmirala Individual Information for NGC 1194
Description
NGC 1194 is a highly-inclined early-type spiral galaxy at a redshift of z = 0.0136 (D ~ 58.2 Mpc) with an AGN, optically classified as a Sy 1.9 [veron-cetty_catalogue_2010]. It features one-sided weak extended radio emission cospatial with [O III] emission (extension~ 1arcsec ~0.3 kpc; PA~-124∘; [schmitt_jet_2001, schmitt_hubble_2003]). After IRAS, NGC 1194 was observed in the MIR with Palomar 5 m/MIRLIN [gorjian_10_2004] and Spitzer/IRAC and IRS. The IRAC images, it appears as a compact but slightly resolved source. Our IRAC 5.8 and 8.0 μm are consistent with the values presented in [gallimore_infrared_2010]. The IRS LR mapping-mode spectrum exhibits a deep silicate 10 μm absorption feature, possibly short-wavelength PAH emission, and a shallow blue spectral slope in νFν-space (see also [buchanan_spitzer_2006, deo_spitzer_2007, deo_mid-infrared_2009, wu_spitzer/irs_2009, tommasin_spitzer-irs_2010, gallimore_infrared_2010]). NGC 1194 was observed with VISIR in five N-band filters in 2009 (unpublished, to our knowledge) and an unresolved nucleus without any host emission was detected in all images. The nuclear photometry in general agrees with the Spitzer spectrophotometry except at ~ 8 μm. Therefore, the silicate feature originates in the projected central ~ 100 pc of NGC 1194, and we correct our 12 μm continuum emission estimate for it by using the IRS spectrum. The apparent absence of nuclear PAH emission agrees with the findings of [imanishi_compact_2003] and together with the MIR compactness disfavours significant nuclear star formation in NGC 1194 as suggested by [davies_molecular_2005].
- [buchanan_spitzer_2006] Catherine L. Buchanan, Jack F. Gallimore, Christopher P. O'Dea, Stefi A. Baum, David J. Axon, Andrew Robinson, Moshe Elitzur, and Martin Elvis. Spitzer IRS spectra of a large sample of seyfert galaxies: A variety of infrared spectral energy distributions in the local active galactic nucleus population . AJ , 132 pp. 401–419, July 2006.
- [davies_molecular_2005] R. I. Davies, A. Sternberg, M. D. Lehnert, and L. E. Tacconi-Garman. Molecular hydrogen excitation around active galactic nuclei . ApJ , 633 pp. 105–121, November 2005.
- [deo_mid-infrared_2009] Rajesh P. Deo, Gordon T. Richards, D. M. Crenshaw, and S. B. Kraemer. The mid-infrared continua of seyfert galaxies . ApJ , 705 pp. 14–31, November 2009.
- [deo_spitzer_2007] R. P. Deo, D. M. Crenshaw, S. B. Kraemer, M. Dietrich, M. Elitzur, H. Teplitz, and T. J. Turner. Spitzer IRS observations of seyfert 1.8 and 1.9 galaxies: A comparison with seyfert 1 and seyfert 2 . ApJ , 671 pp. 124–135, December 2007.
- [gallimore_infrared_2010] J. F. Gallimore, A. Yzaguirre, J. Jakoboski, M. J. Stevenosky, D. J. Axon, S. A. Baum, C. L. Buchanan, M. Elitzur, M. Elvis, C. P. O'Dea, and A. Robinson. Infrared spectral energy distributions of seyfert galaxies: Spitzer space telescope observations of the 12 μm sample of active galaxies . ApJS , 187 pp. 172–211, March 2010.
- [gorjian_10_2004] V. Gorjian, M. W. Werner, T. H. Jarrett, D. M. Cole, and M. E. Ressler. 10 micron imaging of seyfert galaxies from the 12 micron sample . ApJ , 605 pp. 156–167, April 2004.
- [imanishi_compact_2003] Masatoshi Imanishi. Compact nuclear starbursts in seyfert 2 galaxies from the CfA and 12 micron samples . ApJ , 599 pp. 918–932, December 2003.
- [schmitt_hubble_2003] H. R. Schmitt, J. L. Donley, R. R. J. Antonucci, J. B. Hutchings, and A. L. Kinney. A hubble space telescope survey of extended [o III] λ5007 emission in a far-infrared selected sample of seyfert galaxies: Observations . ApJS , 148 pp. 327–352, October 2003.
- [schmitt_jet_2001] H. R. Schmitt, J. S. Ulvestad, R. R. J. Antonucci, and A. L. Kinney. Jet directions in seyfert galaxies: Radio continuum imaging data . ApJS , 132 pp. 199–209, February 2001.
- [tommasin_spitzer-irs_2010] Silvia Tommasin, Luigi Spinoglio, Matthew A. Malkan, and Giovanni Fazio. Spitzer-IRS high-resolution spectroscopy of the 12 μm seyfert galaxies. II. results for the complete data set . ApJ , 709 pp. 1257–1283, February 2010.
- [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.
- [wu_spitzer/irs_2009] Yanling Wu, Vassilis Charmandaris, Jiasheng Huang, Luigi Spinoglio, and Silvia Tommasin. Spitzer/IRS 5-35 μm low-resolution spectroscopy of the 12 μm seyfert sample . ApJ , 701 pp. 658–676, August 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.
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.