Sasmirala Individual Information for NGC 4111
Description
NGC 4111 is an edge-on early-type spiral galaxy at a distance of D = 15 ± 1.5 Mpc [tonry_sbf_2001] with a LINER nucleus [ho_search_1997-1]. The nuclear remained undetected in subarcsecond-resolution radio observations [nagar_radio_2000], while it appears a compact hard source in X-rays [gonzalez-martin_x-ray_2006, flohic_central_2006]. The Hα emission has a compact component and an extended halo with a major axis of ~ 6arcsec ~ 0.4 kpc length along a PA coincident with the galaxy major axis (~ 150∘; [masegosa_nature_2011]). The first successful MIR observation of NGC 4111 was performed by [willner_infrared_1985] who marginally detected the nucleus using the IRTF. The object was not detected by IRAS, while in the WISE images an compact nuclear component embedded within the edge-on host emission is visible. No Spitzer data are available for NGC 4111. [mason_nuclear_2012] have observed its nuclear region with Michelle in the N’ filter in 2008 and weakly detected a compact nucleus embedded within clumpy extended emission of ~ 2arcsec ~ 150 pc total diameter. Our measurement of the unresolved nuclear component is consistent with the value given by [mason_nuclear_2012]. The lack of MIR data does not allow for any conclusions about the source nature.
- [flohic_central_2006] Hélène M. L. G. Flohic, Michael Eracleous, George Chartas, Joseph C. Shields, and Edward C. Moran. The central engines of 19 LINERs as viewed by chandra . ApJ , 647 pp. 140–160, August 2006.
- [gonzalez-martin_x-ray_2006] O. González-Martín, J. Masegosa, I. Márquez, M. A. Guerrero, and D. Dultzin-Hacyan. X-ray nature of the LINER nuclear sources . A&A , 460 pp. 45–57, December 2006.
- [ho_search_1997-1] Luis C. Ho, Alexei V. Filippenko, and Wallace L. W. Sargent. A search for ``Dwarf'' seyfert nuclei. III. spectroscopic parameters and properties of the host galaxies . ApJS , 112 pp. 315, October 1997.
- [masegosa_nature_2011] J. Masegosa, I. Márquez, A. Ramirez, and O. González-Martín. The nature of nuclear hα emission in LINERs . A&A , 527 pp. 23, March 2011.
- [mason_nuclear_2012] R. E. Mason, E. Lopez-Rodriguez, C. Packham, A. Alonso-Herrero, N. A. Levenson, J. Radomski, C. Ramos Almeida, L. Colina, M. Elitzur, I. Aretxaga, P. F. Roche, and N. Oi. The nuclear infrared emission of low-luminosity active galactic nuclei. AJ , 144 pp. 11, July 2012.
- [nagar_radio_2000] Neil M. Nagar, Heino Falcke, Andrew S. Wilson, and Luis C. Ho. Radio sources in low-luminosity active galactic nuclei. i. VLA detections of compact, flat-spectrum cores . ApJ , 542 pp. 186–196, October 2000.
- [tonry_sbf_2001] John L. Tonry, Alan Dressler, John P. Blakeslee, Edward A. Ajhar, André B. Fletcher, Gerard A. Luppino, Mark R. Metzger, and Christopher B. Moore. The SBF survey of galaxy distances. IV. SBF magnitudes, colors, and distances . ApJ , 546 pp. 681–693, January 2001.
- [willner_infrared_1985] S. P. Willner, M. Elvis, G. Fabbiano, A. Lawrence, and M. J. Ward. Infrared observations of LINER galactic nuclei . ApJ , 299 pp. 443–461, December 1985.
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.