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  • The ultraviolet luminosity ...
    Page, M J; Dwelly, T; McHardy, I; Seymour, N; Mason, K O; Sharma, M; Kennea, J A; Sasseen, T P; Rawlings, J I; Breeveld, A A; Ferreras, I; Loaring, N S; Walton, D J; Symeonidis, M

    Monthly notices of the Royal Astronomical Society, 09/2021, Letnik: 506, Številka: 1
    Journal Article

    ABSTRACT We use ultraviolet (UV) imaging taken with the XMM–Newton Optical Monitor telescope (XMM-OM), covering 280 arcmin2 in the UVW1 band (λeff = 2910 Å) to measure rest-frame UV 1500-Å luminosity functions of galaxies with redshifts z between 0.6 and 1.2. The XMM-OM data are supplemented by a large body of optical and infrared imaging to provide photometric redshifts. The XMM-OM data have a significantly narrower point spread function (resulting in less source confusion) and simpler K-correction than the GALEX data previously employed in this redshift range. UV-bright active galactic nuclei are excluded to ensure that the luminosity functions relate directly to the star-forming galaxy population. Binned luminosity functions and parametric Schechter-function fits are derived in two redshift intervals: 0.6 < z < 0.8 and 0.8 < z < 1.2. We find that the luminosity function evolves such that the characteristic absolute magnitude M* is brighter for 0.8 < z < 1.2 than for 0.6 < z < 0.8.