The Growth of Intracluster Light in XCS-HSC Galaxy Clusters from $0.1 < z < 0.5$
| Autor: | Paul Giles, Phil A. James, Maria Manolopoulou, K. Furnell, R. D. Wilkinson, Pedro T. P. Viana, Chris A. Collins, Carlos Vergara, Lee S. Kelvin, Ivan K. Baldry, A. Bermeo, Sunayana Bhargava, Robert G. Mann, Matt Hilton, John P. Stott, Julian A. Mayers, A. Kathy Romer |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Stellar mass 010308 nuclear & particles physics astro-ph.GA Flux Order (ring theory) Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Astrophysics - Astrophysics of Galaxies Redshift Galaxy Space and Planetary Science 0103 physical sciences Cluster (physics) Brightest cluster galaxy 010303 astronomy & astrophysics Galaxy cluster QC QB |
| Zdroj: | Furnell, K E, Collins, C A, Kelvin, L S, Baldry, I K, James, P A, Manolopoulou, M, Mann, R G, Giles, P A, Bermeo, A, Hilton, M, Wilkinson, R, Romer, A K, Vergara, C, Bhargava, S, Stott, J P, Mayers, J & Viana, P 2021, ' The Growth of Intracluster Light in XCS-HSC Galaxy Clustersfrom 0.1 < z < 0.5 ', Monthly Notices of the Royal Astronomical Society, vol. 502, no. 2, pp. 2419-2437 . https://doi.org/10.1093/mnras/stab065 |
| ISSN: | 0035-8711 |
| DOI: | 10.1093/mnras/stab065 |
| Popis: | We estimate the Intracluster Light (ICL) component within a sample of 18 clusters detected in XMM Cluster Survey (XCS) data using deep ($\sim$ 26.8 mag) Hyper Suprime Cam Subaru Strategic Program DR1 (HSC-SSP DR1) $i$-band data. We apply a rest-frame ${\mu}_{B} = 25 \ \mathrm{mag/arcsec^{2}}$ isophotal threshold to our clusters, below which we define light as the ICL within an aperture of $R_{X,500}$ (X-ray estimate of $R_{500}$) centered on the Brightest Cluster Galaxy (BCG). After applying careful masking and corrections for flux losses from background subtraction, we recover $\sim$20% of the ICL flux, approximately four times our estimate of the typical background at the same isophotal level ($\sim$ 5%). We find that the ICL makes up about $\sim$ 24% of the total cluster stellar mass on average ($\sim$ 41% including the flux contained in the BCG within 50 kpc); this value is well-matched with other observational studies and semi-analytic/numerical simulations, but is significantly smaller than results from recent hydrodynamical simulations (even when measured in an observationally consistent way). We find no evidence for any links between the amount of ICL flux with cluster mass, but find a growth rate of $2-4$ for the ICL between $0.1 < z < 0.5$. We conclude that the ICL is the dominant evolutionary component of stellar mass in clusters from $z \sim 1$. Our work highlights the need for a consistent approach when measuring ICL alongside the need for deeper imaging, in order to unambiguously measure the ICL across as broad a redshift range as possible (e.g. 10-year stacked imaging from the Vera C. Rubin Observatory). Comment: Accepted by MNRAS (05/01/2021), 20 pages, 17 figures |
| Databáze: | OpenAIRE |
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