Pilot-WINGS: An extended MUSE view of the structure of Abell 370
Pilot-WINGS: An extended MUSE view of the structure of Abell 370
复制标题
Pilot-WINGS:Abell 370 结构的扩展 MUSE 视图
DOI:
10.1093/mnras/stac418
复制
发表时间:
2022
影响因子:
4.8
通讯作者:
Mahler, Guillaume
中科院分区:
文献类型:
--
作者:
Lagattuta, David J.;Richard, Johan;Bauer, Franz Erik;Cerny, Catherine;Claeyssens, Adélaïde;Guaita, Lucia;Jauzac, Mathilde;Jeanneau, Alexandre;Koekemoer, Anton M.;Mahler, Guillaume
We investigate the strong-lensing cluster Abell 370 (A370) using a wide Integral Field Unit (IFU) spectroscopic mosaic from the Multi-Unit Spectroscopic Explorer (MUSE). IFU spectroscopy provides significant insight into the structure and mass content of galaxy clusters, yet IFU-based cluster studies focus almost exclusively on the central Einstein-radius region. Covering over 14 arcmin2, the new MUSE mosaic extends significantly beyond the A370 Einstein radius, providing, for the first time, a detailed look at the cluster outskirts. Combining these data with wide-field, multi-bandHubbleSpace Telescope (HST) imaging from the BUFFALO project, we analyse the distribution of objects within the cluster and along the line of sight. Identifying 416 cluster galaxies, we use kinematics to trace the radial mass profile of the halo, providing a mass estimate independent from the lens model. We also measure radially averaged properties of the cluster members, tracking their evolution as a function of infall. Thanks to the high spatial resolution of our data, we identify six cluster members acting as galaxy–galaxy lenses, which constrain localized mass distributions beyond the Einstein radius. Finally, taking advantage of MUSE’s 3D capabilities, we detect and analyse multiple spatially extended overdensities outside of the cluster that influence lensing-derived halo mass estimates. We stress that much of this work is only possible thanks to the robust, extended IFU coverage, highlighting its importance even in less optically dense cluster regions. Overall, this work showcases the power of combiningHST+ MUSE, and serves as the initial step towards a larger and wider program targeting several clusters.
DOI:
10.26562/ijiris.2023.v0903.09
发表时间:
2023-06
期刊:
International Journal of Innovative Research in Information Security
影响因子:
--
作者:
P. V;Dharanishwari R;Jayashree Lm;Boya pavani
通讯作者:
P. V;Dharanishwari R;Jayashree Lm;Boya pavani
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
M. Molinaro;K. Shortridge;F. Pasian
通讯作者:
F. Pasian
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Samuel Hinton
通讯作者:
Samuel Hinton