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• W2953123020 endingPage "131" @default.
• W2953123020 startingPage "131" @default.
• W2953123020 abstract "As part of the Panchromatic Hubble Andromeda Treasury multi-cycle program, we observed a 12' × 65 area of the bulge of M31 with the WFC3/UVIS filters F275W and F336W. From these data we have assembled a sample of ∼4000 UV-bright, old stars, vastly larger than previously available. We use updated Padova stellar evolutionary tracks to classify these hot stars into three classes: Post-AGB stars (P-AGB), Post-Early AGB (PE-AGB) stars, and AGB-manqué stars. P-AGB stars are the end result of the asymptotic giant branch (AGB) phase and are expected in a wide range of stellar populations, whereas PE-AGB and AGB-manqué (together referred to as the hot post-horizontal branch; HP-HB) stars are the result of insufficient envelope masses to allow a full AGB phase, and are expected to be particularly prominent at high helium or α abundances when the mass loss on the red giant branch is high. Our data support previous claims that most UV-bright sources in the bulge are likely hot (extreme) horizontal branch (EHB) stars and their progeny. We construct the first radial profiles of these stellar populations and show that they are highly centrally concentrated, even more so than the integrated UV or optical light. However, we find that this UV-bright population does not dominate the total UV luminosity at any radius, as we are detecting only the progeny of the EHB stars that are the likely source of the UV excess. We calculate that only a few percent of main-sequence stars in the central bulge can have gone through the HP-HB phase and that this percentage decreases strongly with distance from the center. We also find that the surface density of hot UV-bright stars has the same radial variation as that of low-mass X-ray binaries. We discuss age, metallicity, and abundance variations as possible explanations for the observed radial variation in the UV-bright population." @default.
• W2953123020 created "2019-06-27" @default.
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• W2953123020 date "2012-08-02" @default.
• W2953123020 modified "2023-10-18" @default.
• W2953123020 title "THE PANCHROMATIC HUBBLE ANDROMEDA TREASURY. I. BRIGHT UV STARS IN THE BULGE OF M31" @default.
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• W2953123020 cites W1907874666 @default.
• W2953123020 cites W1969609192 @default.
• W2953123020 cites W1970119662 @default.
• W2953123020 cites W1970333333 @default.
• W2953123020 cites W1970638568 @default.
• W2953123020 cites W1975557965 @default.
• W2953123020 cites W1976127959 @default.
• W2953123020 cites W1983538845 @default.
• W2953123020 cites W1985175579 @default.
• W2953123020 cites W1985728262 @default.
• W2953123020 cites W1987942240 @default.
• W2953123020 cites W1997384998 @default.
• W2953123020 cites W1997674692 @default.
• W2953123020 cites W1998494018 @default.
• W2953123020 cites W2000070292 @default.
• W2953123020 cites W2002526942 @default.
• W2953123020 cites W2005276762 @default.
• W2953123020 cites W2008663952 @default.
• W2953123020 cites W2009638503 @default.
• W2953123020 cites W2015733060 @default.
• W2953123020 cites W2022771566 @default.
• W2953123020 cites W2024465891 @default.
• W2953123020 cites W2028505486 @default.
• W2953123020 cites W2030838397 @default.
• W2953123020 cites W2034723625 @default.
• W2953123020 cites W2037642463 @default.
• W2953123020 cites W2037870704 @default.
• W2953123020 cites W2042796920 @default.
• W2953123020 cites W2050363408 @default.
• W2953123020 cites W2053265856 @default.
• W2953123020 cites W2054893294 @default.
• W2953123020 cites W2057651194 @default.
• W2953123020 cites W2071996950 @default.
• W2953123020 cites W2076378519 @default.
• W2953123020 cites W2079277828 @default.
• W2953123020 cites W2080114077 @default.
• W2953123020 cites W2082476252 @default.
• W2953123020 cites W2087877919 @default.
• W2953123020 cites W2088153665 @default.
• W2953123020 cites W2108706852 @default.
• W2953123020 cites W2111817932 @default.
• W2953123020 cites W2126877617 @default.
• W2953123020 cites W2129760210 @default.
• W2953123020 cites W2141563551 @default.
• W2953123020 cites W2142220522 @default.
• W2953123020 cites W2142781878 @default.
• W2953123020 cites W2153117529 @default.
• W2953123020 cites W2159354593 @default.
• W2953123020 cites W2165704835 @default.
• W2953123020 cites W2167635287 @default.
• W2953123020 cites W2197924047 @default.
• W2953123020 cites W2719761689 @default.
• W2953123020 cites W2951182192 @default.
• W2953123020 cites W3098115284 @default.
• W2953123020 cites W3100983842 @default.
• W2953123020 cites W3101343126 @default.
• W2953123020 cites W3101751716 @default.
• W2953123020 cites W3102945995 @default.
• W2953123020 cites W3103803584 @default.
• W2953123020 cites W3104671860 @default.
• W2953123020 cites W3105001664 @default.
• W2953123020 cites W3106199679 @default.
• W2953123020 cites W3106265194 @default.
• W2953123020 cites W4210985876 @default.
• W2953123020 cites W4293311141 @default.
• W2953123020 cites W4298835067 @default.
• W2953123020 cites W4299665471 @default.
• W2953123020 cites W72669394 @default.
• W2953123020 doi "https://doi.org/10.1088/0004-637x/755/2/131" @default.

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