|Title||XMM, Spitzer, and Ground-based Observations of Seyfert 1.8 and 1.9 Galaxies|
|Author||Prof D. Michael Crenshaw|
|Description||We propose XMM-Newton observations of 6 Seyfert 1.8 and 1.9 galaxies from our approved Spitzer program that will obtain the mid-IR spectra of these AGN. We will use the EPIC spectra to characterize the absorption components and determine their hydrogen column densities in the line of sight to the X-ray emission sources. From the X-ray determinations of gas column densities and global constraints (temperatures, sizes) on the circumnuclear dust regions derived from the Spitzer spectra, we will test the clumpy torus model, and the idea that Seyfert 1.8 and 1.9 galaxies are viewed at intermediate angles with respect to the torus axis. We will obtain groundbased optical and near-IR spectra as well, to measure the dust-gas ratio in the torus.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|Mission Description||The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2007-09-16T00:00:00Z, 030226, 17.56_20190403_1200. https://doi.org/10.5270/esa-ayj2bw2|