| Autor: |
Tozzi, P., Santos, J. S., Jee, M. J., Fassbender, R., Rosati, P., Nastasi, A., Forman, W., Sartoris, B., Borgani, S., Boehringer, H., Altieri, B., Pratt, G. W., Nonino, M., Jones, C. |
| Rok vydání: |
2014 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1088/0004-637X/799/1/93 |
| Popis: |
We report the analysis of the Chandra observation of XDCP J0044.0-2033, a massive, distant (z=1.579) galaxy cluster discovered in the XDCP survey. The total exposure time of 380 ks with Chandra ACIS-S provides the deepest X-ray observation currently achieved on a massive, high redshift cluster. Extended emission from the Intra Cluster Medium (ICM) is detected at a very high significance level (S/N~20) on a circular region with a 44" radius, corresponding to $R_{ext}=375$ kpc at the cluster redshift. We perform an X-ray spectral fit of the ICM emission modeling the spectrum with a single-temperature thermal mekal model. Our analysis provides a global temperature $kT=6.7^{+1.3}_{-0.9}$ keV, and a iron abundance $Z_{Fe} = 0.41_{-0.26}^{+0.29}Z_{Fe_\odot}$ (error bars correspond to 1 $\sigma$). We fit the background-subtracted surface brightness profile with a single $\beta$-model out to 44", finding a rather flat profile with no hints of a cool core. We derive the deprojected electron density profile and compute the ICM mass within the extraction radius $R_{ext}=375$ kpc to be $M_{ICM}(rComment: 42 pages, 12 Figures, ApJ in press |
| Databáze: |
arXiv |
| Externí odkaz: |
|
