Matches in SemOpenAlex for { <https://semopenalex.org/work/W2923530187> ?p ?o ?g. }
- W2923530187 endingPage "124" @default.
- W2923530187 startingPage "124" @default.
- W2923530187 abstract "We present new deep ALMA and Hubble Space Telescope (HST)/WFC3 observations of MASOSA and VR7, two luminous Lyα emitters (LAEs) at z = 6.5, for which the UV continuum levels differ by a factor of four. No IR dust continuum emission is detected in either, indicating little amounts of obscured star formation and/or high dust temperatures. MASOSA, with a UV luminosity M1500 = −20.9, compact size, and very high Lyα , is undetected in [C ii] to a limit of L[C ii] < 2.2 × 107 L⊙, implying a metallicity Z ≲ 0.07 Z⊙. Intriguingly, our HST data indicate a red UV slope β = −1.1 ± 0.7, at odds with the low dust content. VR7, which is a bright (M1500 = −22.4) galaxy with moderate color (β = −1.4 ± 0.3) and Lyα EW0 = 34 Å, is clearly detected in [C ii] emission (S/N = 15). VR7's rest-frame UV morphology can be described by two components separated by ≈1.5 kpc and is globally more compact than the [C ii] emission. The global [C ii]/UV ratio indicates Z ≈ 0.2 Z⊙, but there are large variations in the UV/[C ii] ratio on kiloparsec scales. We also identify diffuse, possibly outflowing, [C ii]-emitting gas at ≈100 km s−1 with respect to the peak. VR7 appears to be assembling its components at a slightly more evolved stage than other luminous LAEs, with outflows already shaping its direct environment at z ∼ 7. Our results further indicate that the global [C ii]−UV relation steepens at SFR < 30 M⊙ yr−1, naturally explaining why the [C ii]/UV ratio is anticorrelated with Lyα EW in many, but not all, observed LAEs." @default.
- W2923530187 created "2019-04-01" @default.
- W2923530187 creator A5015179666 @default.
- W2923530187 creator A5016592437 @default.
- W2923530187 creator A5025701229 @default.
- W2923530187 creator A5044374924 @default.
- W2923530187 creator A5055387284 @default.
- W2923530187 creator A5055826068 @default.
- W2923530187 creator A5062010375 @default.
- W2923530187 creator A5063280412 @default.
- W2923530187 creator A5081214695 @default.
- W2923530187 creator A5090073897 @default.
- W2923530187 date "2019-08-21" @default.
- W2923530187 modified "2023-10-16" @default.
- W2923530187 title "Resolved UV and [C ii] Structures of Luminous Galaxies within the Epoch of Reionization" @default.
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