The ALPINE-ALMA [CII] Survey: Dust emission effective radius up to 3 kpc in the Early Universe
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arXiv
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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| author | Pozzi, F. Calura, F. D'Amato, Q. Gavarente, M. Bethermin, M. Boquien, M. Casasola, V. Cimatti, A. Cochrane, R. Dessauges-Zavadsky, M. Enia, A. Esposito, F. Faisst, A. L. Gilli, R. Ginolfi, M. Gobat, R. Gruppioni, C. Hayward, C. C. Ibar, E. Koekemoer, A. M. Lemaux, B. C. Magdis, G. E. Molina, J. Talia, M. Vallini, L. Vergani, D. Zamorani, G. |
| author_facet | Pozzi, F. Calura, F. D'Amato, Q. Gavarente, M. Bethermin, M. Boquien, M. Casasola, V. Cimatti, A. Cochrane, R. Dessauges-Zavadsky, M. Enia, A. Esposito, F. Faisst, A. L. Gilli, R. Ginolfi, M. Gobat, R. Gruppioni, C. Hayward, C. C. Ibar, E. Koekemoer, A. M. Lemaux, B. C. Magdis, G. E. Molina, J. Talia, M. Vallini, L. Vergani, D. Zamorani, G. |
| contents | Measurements of the size of dust continuum emission are an important tool for constraining the spatial extent of star formation and hence the build-up of stellar mass. Compact dust emission has generally been observed at Cosmic Noon (z~2-3). However, at earlier epochs, toward the end of the Reionization (z~4-6), only the sizes of a handful of IR-bright galaxies have been measured. In this work, we derive the dust emission sizes of main-sequence galaxies at z~5 from the ALPINE survey. We measure the dust effective radius r_e,FIR in the uv-plane in Band 7 of ALMA for seven ALPINE galaxies with resolved emission and we compare it with rest-frame UV and [CII]158$μ$m measurements. We study the r_e,FIR-L_IR scaling relation by considering our dust size measurements and all the data in literature at z~4-6. Finally, we compare our size measurements with predictions from simulations. The dust emission in the selected ALPINE galaxies is rather extended (r_e,FIR~1.5-3 kpc), similar to [CII]158 um but a factor of ~2 larger than the rest-frame UV emission. Putting together all the measurements at z~5, spanning 2 decades in luminosity from L_IR ~ 10^11 L_sun to L_IR ~ 10^13 L_sun, the data highlight a steeply increasing trend of the r_e,FIR-L_IR relation at L_IR< 10^12 L_sun, followed by a downturn and a decreasing trend at brighter luminosities. Finally, simulations that extend up to the stellar masses of the ALPINE galaxies considered in the present work predict a sub-set of galaxies (~25% at 10^10 M_sun < M_star < 10^11 M_sun) with sizes as large as those measured. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_13490 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The ALPINE-ALMA [CII] Survey: Dust emission effective radius up to 3 kpc in the Early Universe Pozzi, F. Calura, F. D'Amato, Q. Gavarente, M. Bethermin, M. Boquien, M. Casasola, V. Cimatti, A. Cochrane, R. Dessauges-Zavadsky, M. Enia, A. Esposito, F. Faisst, A. L. Gilli, R. Ginolfi, M. Gobat, R. Gruppioni, C. Hayward, C. C. Ibar, E. Koekemoer, A. M. Lemaux, B. C. Magdis, G. E. Molina, J. Talia, M. Vallini, L. Vergani, D. Zamorani, G. Astrophysics of Galaxies Measurements of the size of dust continuum emission are an important tool for constraining the spatial extent of star formation and hence the build-up of stellar mass. Compact dust emission has generally been observed at Cosmic Noon (z~2-3). However, at earlier epochs, toward the end of the Reionization (z~4-6), only the sizes of a handful of IR-bright galaxies have been measured. In this work, we derive the dust emission sizes of main-sequence galaxies at z~5 from the ALPINE survey. We measure the dust effective radius r_e,FIR in the uv-plane in Band 7 of ALMA for seven ALPINE galaxies with resolved emission and we compare it with rest-frame UV and [CII]158$μ$m measurements. We study the r_e,FIR-L_IR scaling relation by considering our dust size measurements and all the data in literature at z~4-6. Finally, we compare our size measurements with predictions from simulations. The dust emission in the selected ALPINE galaxies is rather extended (r_e,FIR~1.5-3 kpc), similar to [CII]158 um but a factor of ~2 larger than the rest-frame UV emission. Putting together all the measurements at z~5, spanning 2 decades in luminosity from L_IR ~ 10^11 L_sun to L_IR ~ 10^13 L_sun, the data highlight a steeply increasing trend of the r_e,FIR-L_IR relation at L_IR< 10^12 L_sun, followed by a downturn and a decreasing trend at brighter luminosities. Finally, simulations that extend up to the stellar masses of the ALPINE galaxies considered in the present work predict a sub-set of galaxies (~25% at 10^10 M_sun < M_star < 10^11 M_sun) with sizes as large as those measured. |
| title | The ALPINE-ALMA [CII] Survey: Dust emission effective radius up to 3 kpc in the Early Universe |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2403.13490 |