Sasmirala Individual Information for 1H 0419-577
Description
1H 0419-577 is a radio-quiet low-luminosity quasar at a redshift of z = 0.1004 (D ~ 499 Mpc) with an optical Sy 1.5 classification [veron-cetty_catalogue_2010]. It was first discovered with the HEAO-1 satellite in X-rays [brissenden_multiwaveband_1987]. Since then, it has mainly been studied in X-rays (e.g., [fabian_x-ray_2005, turner_suzaku_2009]), and is also included in the nine-month BAT sample. No Spitzer/IRAC or IRS data are available for 1H 0419-577 but MIPS shows an unresolved source. We observed this object with VISIR in three narrow N-band filters in 2009 and detected an unresolved nucleus without any further host emission. The corresponding nuclear photometry indicates a blue N-band SED possibly due to silicate 10 μm emission. Combined with the MIPS 24 μm photometry, the resulting broad-band MIR spectral slope appears to be flat or blue in νFν-space.
- [brissenden_multiwaveband_1987] R. J. V. Brissenden, I. R. Tuohy, R. A. Remillard, D. A. H. Buckley, G. V. Bicknell, H. V. Bradt, and D. A. Schwartz. Multiwaveband studies of x-ray selected active galactic nuclei . Proceedings of the Astronomical Society of Australia , 7 pp. 212–215, 1987.
- [fabian_x-ray_2005] A. C. Fabian, G. Miniutti, K. Iwasawa, and R. R. Ross. X-ray reflection in the seyfert galaxy 1H 0419-577 revealing strong relativistic effects in the vicinity of a kerr black hole . MNRAS , 361 pp. 795–802, August 2005.
- [turner_suzaku_2009] T. J. Turner, L. Miller, S. B. Kraemer, J. N. Reeves, and K. A. Pounds. Suzaku observation of a hard excess in 1H 0419 - 577: Detection of a compton-thick partial-covering absorber . ApJ , 698 pp. 99–105, June 2009.
- [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.
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.