{"acknowledgement":"We thank the anonymous referee for constructive comments and suggestions. We thank Max Gronke for comments on an earlier version of this paper. L.V. acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 746119. This paper makes use of the following ALMA data: ADS/JAO.ALMA#2017.1.01451.S. ALMA is a partnership of ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada), NSC and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. Based on observations obtained with the Very Large Telescope, programs 294.A-5018, 097.A-0943, and 99.A-0462. Based on observations made with the NASA/ESA Hubble Space Telescope, obtained (from the Data Archive) at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with program No. 14699.","language":[{"iso":"eng"}],"keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"month":"08","intvolume":"       881","article_processing_charge":"No","main_file_link":[{"url":"https://arxiv.org/abs/1903.08171","open_access":"1"}],"citation":{"chicago":"Matthee, Jorryt J, D. Sobral, L. A. Boogaard, H. Röttgering, L. Vallini, A. Ferrara, A. Paulino-Afonso, F. Boone, D. Schaerer, and B. Mobasher. “Resolved UV and [C Ii] Structures of Luminous Galaxies within the Epoch of Reionization.” <i>The Astrophysical Journal</i>. IOP Publishing, 2019. <a href=\"https://doi.org/10.3847/1538-4357/ab2f81\">https://doi.org/10.3847/1538-4357/ab2f81</a>.","apa":"Matthee, J. J., Sobral, D., Boogaard, L. A., Röttgering, H., Vallini, L., Ferrara, A., … Mobasher, B. (2019). Resolved UV and [C ii] structures of luminous galaxies within the epoch of reionization. <i>The Astrophysical Journal</i>. IOP Publishing. <a href=\"https://doi.org/10.3847/1538-4357/ab2f81\">https://doi.org/10.3847/1538-4357/ab2f81</a>","ieee":"J. J. Matthee <i>et al.</i>, “Resolved UV and [C ii] structures of luminous galaxies within the epoch of reionization,” <i>The Astrophysical Journal</i>, vol. 881, no. 2. IOP Publishing, 2019.","ista":"Matthee JJ, Sobral D, Boogaard LA, Röttgering H, Vallini L, Ferrara A, Paulino-Afonso A, Boone F, Schaerer D, Mobasher B. 2019. Resolved UV and [C ii] structures of luminous galaxies within the epoch of reionization. The Astrophysical Journal. 881(2), 124.","mla":"Matthee, Jorryt J., et al. “Resolved UV and [C Ii] Structures of Luminous Galaxies within the Epoch of Reionization.” <i>The Astrophysical Journal</i>, vol. 881, no. 2, 124, IOP Publishing, 2019, doi:<a href=\"https://doi.org/10.3847/1538-4357/ab2f81\">10.3847/1538-4357/ab2f81</a>.","ama":"Matthee JJ, Sobral D, Boogaard LA, et al. Resolved UV and [C ii] structures of luminous galaxies within the epoch of reionization. <i>The Astrophysical Journal</i>. 2019;881(2). doi:<a href=\"https://doi.org/10.3847/1538-4357/ab2f81\">10.3847/1538-4357/ab2f81</a>","short":"J.J. Matthee, D. Sobral, L.A. Boogaard, H. Röttgering, L. Vallini, A. Ferrara, A. Paulino-Afonso, F. Boone, D. Schaerer, B. Mobasher, The Astrophysical Journal 881 (2019)."},"date_created":"2022-07-06T13:38:15Z","abstract":[{"lang":"eng","text":"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 ${\\mathrm{EW}}_{0}\\approx 145\\,\\mathring{\\rm A} $, 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."}],"type":"journal_article","article_type":"original","publication_identifier":{"eissn":["1538-4357"],"issn":["0004-637X"]},"date_updated":"2022-08-18T10:19:48Z","year":"2019","publication":"The Astrophysical Journal","title":"Resolved UV and [C ii] structures of luminous galaxies within the epoch of reionization","oa":1,"article_number":"124","issue":"2","publisher":"IOP Publishing","extern":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"arxiv":["1903.08171"]},"publication_status":"published","oa_version":"Preprint","author":[{"last_name":"Matthee","full_name":"Matthee, Jorryt J","orcid":"0000-0003-2871-127X","id":"7439a258-f3c0-11ec-9501-9df22fe06720","first_name":"Jorryt J"},{"last_name":"Sobral","full_name":"Sobral, D.","first_name":"D."},{"full_name":"Boogaard, L. A.","last_name":"Boogaard","first_name":"L. A."},{"full_name":"Röttgering, H.","last_name":"Röttgering","first_name":"H."},{"full_name":"Vallini, L.","last_name":"Vallini","first_name":"L."},{"full_name":"Ferrara, A.","last_name":"Ferrara","first_name":"A."},{"first_name":"A.","full_name":"Paulino-Afonso, A.","last_name":"Paulino-Afonso"},{"first_name":"F.","last_name":"Boone","full_name":"Boone, F."},{"last_name":"Schaerer","full_name":"Schaerer, D.","first_name":"D."},{"full_name":"Mobasher, B.","last_name":"Mobasher","first_name":"B."}],"doi":"10.3847/1538-4357/ab2f81","_id":"11515","quality_controlled":"1","volume":881,"scopus_import":"1","day":"21","date_published":"2019-08-21T00:00:00Z","status":"public"}