A Comparison of the Stellar, CO, and Dust-continuum Emission from Three Star-forming HUDF Galaxies at z?～?2
文献类型：期刊论文
| 作者 | Kaasinen,Melanie4,15,16; Walter,Fabian16; Novak,Mladen16; Neeleman,Marcel16; Smail,Ian1; Boogaard,Leindert3; Cunha,Elisabete da2,4,17; Weiss,Axel18; Liu,Daizhong16; Decarli,Roberto14 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 899期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | High-redshift galaxies Interstellar medium Dust continuum emission Galaxy evolution Molecular gas |
| DOI | 10.3847/1538-4357/aba438 |
| 英文摘要 | Abstract We compare the extent of the dust, molecular gas, and stars in three star-forming galaxies, at z?=?1.4, 1.6, and 2.7, selected from the Hubble Ultra Deep Field based on their bright carbon monoxide (CO) and dust-continuum emission as well as their large rest-frame optical sizes. The galaxies have high stellar masses, , and reside on, or slightly below, the main sequence of star-forming galaxies at their respective redshifts. We probe the dust and molecular gas using subarcsecond Atacama Large Millimeter/submillimeter Array observations of the 1.3 mm continuum and CO line emission, respectively, and probe the stellar distribution using Hubble Space Telescope observations at 1.6 μm. We find that for all three galaxies the CO emission appears ?30% more compact than the stellar emission. For the z?=?1.4 and 2.7 galaxies, the dust emission is also more compact, by ?50%, than the stellar emission, whereas for the z?=?1.6 galaxy, the dust and stellar emission have similar spatial extents. This similar spatial extent is consistent with observations of local disk galaxies. However, most high-redshift observations show more compact dust emission, likely because of the ubiquity of central starbursts at high redshift and the limited sensitivity of many of these observations. Using the CO emission line, we also investigate the kinematics of the cold interstellar medium in the galaxies, and find that all three have kinematics consistent with a rotation-dominated disk. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-899-1-aba438 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/61732]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Centre for Extragalactic Astronomy, Department of Physics, Durham University, Durham DH1 3LE, UK 2.International Centre for Radio Astronomy Research, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia 3.Leiden Observatory, Leiden University, P.O. Box 9513, NL-2300 RA Leiden, The Netherlands 4.ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), Australia 5.Institut dastrophysique de Paris, Sorbonne Université, CNRS, UMR 7095, 98 bis bd Arago, F-7014 Paris, France 6.Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan 7.Department of Astronomy, Cornell University, Space Sciences Building, Ithaca, NY 14853, USA 8.National Radio Astronomy Observatory, 520 Edgemont Rd, Charlottesville, VA, 22903, USA 9.Joint ALMA Observatory—ESO, Av. Alonso de Córdova, 3107, Santiago, Chile 10.Chinese Academy of Sciences South America Center for Astronomy (CASSACA), National Astronomical Observatories, CAS, Beijing 100101, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Kaasinen,Melanie,Walter,Fabian,Novak,Mladen,等. A Comparison of the Stellar, CO, and Dust-continuum Emission from Three Star-forming HUDF Galaxies at z?～?2[J]. The Astrophysical Journal,2020,899(1). |
| APA | Kaasinen,Melanie.,Walter,Fabian.,Novak,Mladen.,Neeleman,Marcel.,Smail,Ian.,...&Cox,Pierre.(2020).A Comparison of the Stellar, CO, and Dust-continuum Emission from Three Star-forming HUDF Galaxies at z?～?2.The Astrophysical Journal,899(1). |
| MLA | Kaasinen,Melanie,et al."A Comparison of the Stellar, CO, and Dust-continuum Emission from Three Star-forming HUDF Galaxies at z?～?2".The Astrophysical Journal 899.1(2020). |
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