Electronic Resource
The XMM cluster survey:evolution of the velocity dispersion-temperature relation over half a Hubble time
| العنوان: | The XMM cluster survey:evolution of the velocity dispersion-temperature relation over half a Hubble time |
|---|---|
| المؤلفون: | Wilson, Susan, Rooney, Philip J., Caldwell, Caroline, Kay, Scott T., Collins, Chris A., McCarthy, Ian G., Romer, A. Kathy, Bermeo, Alberto, Bernstein, Rebecca, da Costa, Luiz, Gifford, Daniel, Hollowood, Devon, Hoyle, Ben, Jeltema, Tesla, Liddle, Andrew R., Maia, Marcio A. G., Mann, Robert G., Mayers, Julian A., Mehrtens, Nicola, Miller, Christopher J., Nichol, Robert C., Ogando, Ricardo, Sahlen, Martin, Stahl, Benjamin, Stott, John P., Viana, Pedro T. P., Wilcox, Harry |
| بيانات النشر: | 2016-11-21 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | We measure the evolution of the velocity dispersion-temperature (sigma(v)-T-X) relation up to z = 1 using a sample of 38 galaxy clusters drawn from the XMM Cluster Survey. This work improves upon previous studies by the use of a homogeneous cluster sample and in terms of the number of high-redshift clusters included. We present here new redshift and velocity dispersion measurements for 12 z > 0.5 clusters observed with the Gemini Multi Object Spectographs instruments on the Gemini telescopes. Using an orthogonal regression method, we find that the slope of the relation is steeper than that expected if clusters were self-similar, and that the evolution of the normalization is slightly negative, but not significantly different from zero (sigma(v) alpha T0.86+/-0.14E(z)(-0.37+/-0.33)). We verify our results by applying our methods to cosmological hydrodynamical simulations. The lack of evolution seen in our data is consistent with simulations that include both feedback and radiative cooling. |
| مصطلحات الفهرس: | Journal Article, PeerReviewed |
| URL: | |
| الاتاحة: | Open access content. Open access content creative_commons_attribution_noncommercial_4_0_international_license |
| ملاحظة: | application/pdf https://eprints.lancs.ac.uk/id/eprint/84213/1/1512.02800v2.pdf English |
| Other Numbers: | HR0 oai:eprints.lancs.ac.uk:84213 https://eprints.lancs.ac.uk/id/eprint/84213/1/1512.02800v2.pdf Wilson, Susan and Rooney, Philip J. and Caldwell, Caroline and Kay, Scott T. and Collins, Chris A. and McCarthy, Ian G. and Romer, A. Kathy and Bermeo, Alberto and Bernstein, Rebecca and da Costa, Luiz and Gifford, Daniel and Hollowood, Devon and Hoyle, Ben and Jeltema, Tesla and Liddle, Andrew R. and Maia, Marcio A. G. and Mann, Robert G. and Mayers, Julian A. and Mehrtens, Nicola and Miller, Christopher J. and Nichol, Robert C. and Ogando, Ricardo and Sahlen, Martin and Stahl, Benjamin and Stott, John P. and Viana, Pedro T. P. and Wilcox, Harry (2016) The XMM cluster survey:evolution of the velocity dispersion-temperature relation over half a Hubble time. Monthly Notices of the Royal Astronomical Society, 463 (1). pp. 413-428. ISSN 0035-8711 983832474 |
| المصدر المساهم: | LANCASTER UNIV LIBR From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.ocn983832474 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |