X-ray/NIR correlation for early-type galaxies : J/MNRAS/367/627


Authors : Ellis S.C. orcid , O'sullivan E. (hide) , O'sullivan E. et..al

Bibcode : 2006MNRAS.367..627E (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Galaxy catalogs; X-ray sources; Infrared sources; Photometry
UAT : Galaxies, Catalogs, X-ray sources, Infrared sources, Photometry

Compilation (CCC)

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Inserted into VizieR : 23-Sep-2006
Last modification : 02-Jul-2024

Correlations of near-infrared, optical and X-ray luminosity for early-type galaxies. (2006)

Keywords : galaxies fundamental parameters - galaxies: general

Abstract:The relation between X-ray luminosity and near-infrared (NIR) luminosity for early-type galaxies has been examined. NIR luminosities should provide a superior measure of stellar mass compared to optical luminosities used in previous studies, especially if there is significant star formation or dust present in the galaxies. However, we show that the X-ray-NIR relations are remarkably consistent with the X-ray-optical relations. This indicates that the large scatter of the relations is dominated by scatter in the X-ray properties of early-type galaxies, and is consistent with early-types consisting of old, quiescent stellar populations. We have investigated scatter in terms of environment, surface ...(more)
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