PROPOSAL OVERVIEW | |
Proposal Title | X-raying accretion atmosphere of the most massive spiral in the local universe |
Proposal Category | Galaxies, Groups of Galaxies, Clusters of Galaxies and Superclusters |
Proposal Type | LARGE PROGRAM |
Proposal Id | 090017 |
Number of Observations | 4 |
Total exposure time (ks) | 460 |
PI DETAILS | |
PI | Dr. Jiangtao Li |
Institute | University of Michigan |
Country | UNITED STATES |
CO-INVESTIGATORS | ||
Name | Country | |
J. Bregman | UNITED STATES | |
Q. Wang | UNITED STATES | |
E. Hodges-Kluck | UNITED STATES |
ABSTRACT | |
It is a fundamental prediction from the \LambdaCDM cosmology that massive galaxies have an extended X-ray emitting corona produced by the accreted gas from the intergalactic space. Massive isolated spirals provide the best place to search for this accreted hot CGM and the "missing baryons" contained in it. Previous X-ray observations target on massive spirals either too distant or too nearby (M31). We propose mosaic XMM observations covering r<350kpc from the Sombrero, the most massive spiral at d<30Mpc. We will search for signatures of the accretion atmosphere via the radial distributions of the X-ray intensity, as well as the density, temperature, thermal pressure, radiative cooling timescale, and metallicity of the hot gas. We will also quantify the baryon budget of this extended hot CGM. |
PAPERS |
- CLASS 1: | papers that present specific XMM-Newton observations |
- CLASS 2: | papers that refer to published XMM-Newton results with complementary observations, follow-up analysis, or theoretical analysis |
- CLASS 3: | further deliveries which resulted from the program and which are made available to the community (e.g. source catalogues, processed images or spectra in public data base) |
- CLASS 4: | comments and suggestions from PI |