Measuring the Heating and Cooling of the Interstellar Medium at High Redshift: PAH and [C ii] Observations of the Same Star-forming Galaxies at z similar to 2
文献类型：期刊论文
| 作者 | McKinney, Jed1; Pope, Alexandra1; Armus, Lee2; Chary, Ranga-Ram2; Diaz-Santos, Tanio3,4; Dickinson, Mark E.5; Kirkpatrick, Allison6 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 892期号:2页码:16 |
| 关键词 | Starburst galaxies Galaxies Galaxy evolution Interstellar medium High-redshift galaxies Ultraluminous infrared galaxies |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab77b9 |
| 英文摘要 | Star formation depends critically on cooling mechanisms in the interstellar medium (ISM); however, thermal properties of gas in galaxies at the peak epoch of star formation (z similar to 2) remain poorly understood. A limiting factor in understanding the multiphase ISM is the lack of multiple tracers detected in the same galaxies, such as Polycyclic Aromatic Hydrocarbon (PAH) emission, a tracer of a critical photoelectric heating mechanism in interstellar gas, and [C ii] 158 mu m fine-structure emission, a principal coolant. We present ALMA Band 9 observations targeting [C ii] in six z similar to 2 star-forming galaxies with strong Spitzer IRS detections of PAH emission. All six galaxies are detected in dust continuum and marginally resolved. We compare the properties of PAH and [C ii] emission, and constrain their relationship as a function of total infrared luminosity (L-IR) and IR surface density. [C ii] emission is detected in one galaxy at high signal-to-noise (34 sigma), and we place a secure upper limit on a second source. The rest of our sample are not detected in [C ii] likely due to redshift uncertainties and narrow ALMA bandpass windows. Our results are consistent with the deficit in [C ii]/L-IR and PAH/L-IR observed in the literature. However, the ratio of [C ii] to PAH emission at z similar to 2 is possibly much lower than what is observed in nearby dusty star-forming galaxies. This could be the result of enhanced cooling via [O i] at high-z, hotter gas and dust temperatures, and/or a reduction in the photoelectric efficiency, in which the coupling between interstellar radiation and gas heating is diminished. |
| WOS关键词 | POLYCYCLIC AROMATIC-HYDROCARBON ; ULTRALUMINOUS INFRARED GALAXIES ; SPITZER MIDINFRARED SPECTROSCOPY ; MICRON LINE DEFICIT ; ORIGINS DEEP SURVEY ; PHYSICAL CONDITIONS ; MOLECULAR GAS ; PHOTODISSOCIATION REGIONS ; LUMINOUS GALAXIES ; FORMATION HISTORY |
| 资助项目 | CONICYT ; NSF through NRAO[SOSPA5-008] ; NSF through Massachusetts Space Grant Consortium (MASGS) ; CASSACA |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000523679900001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | CONICYT ; CONICYT ; NSF through NRAO ; NSF through NRAO ; NSF through Massachusetts Space Grant Consortium (MASGS) ; NSF through Massachusetts Space Grant Consortium (MASGS) ; CASSACA ; CASSACA ; CONICYT ; CONICYT ; NSF through NRAO ; NSF through NRAO ; NSF through Massachusetts Space Grant Consortium (MASGS) ; NSF through Massachusetts Space Grant Consortium (MASGS) ; CASSACA ; CASSACA ; CONICYT ; CONICYT ; NSF through NRAO ; NSF through NRAO ; NSF through Massachusetts Space Grant Consortium (MASGS) ; NSF through Massachusetts Space Grant Consortium (MASGS) ; CASSACA ; CASSACA ; CONICYT ; CONICYT ; NSF through NRAO ; NSF through NRAO ; NSF through Massachusetts Space Grant Consortium (MASGS) ; NSF through Massachusetts Space Grant Consortium (MASGS) ; CASSACA ; CASSACA |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/55718]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | McKinney, Jed |
| 作者单位 | 1.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 2.CALTECH, Infrared Proc & Anal Ctr, MC 314-6,1200 E Calif Blvd, Pasadena, CA 91125 USA 3.Univ Diego Portales, Fac Ingn & Ciencias, Nucl Astron, Av Ejercito Libertador 441, Santiago, Chile 4.Chinese Acad Sci, South Amer Ctr Astron, Natl Astron Observ, Beijing 100101, Peoples R China 5.Natl Opt Astron Observ, 950 North Cherry Ave, Tucson, AZ 85719 USA 6.Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA |
| 推荐引用方式 GB/T 7714 | McKinney, Jed,Pope, Alexandra,Armus, Lee,et al. Measuring the Heating and Cooling of the Interstellar Medium at High Redshift: PAH and [C ii] Observations of the Same Star-forming Galaxies at z similar to 2[J]. ASTROPHYSICAL JOURNAL,2020,892(2):16. |
| APA | McKinney, Jed.,Pope, Alexandra.,Armus, Lee.,Chary, Ranga-Ram.,Diaz-Santos, Tanio.,...&Kirkpatrick, Allison.(2020).Measuring the Heating and Cooling of the Interstellar Medium at High Redshift: PAH and [C ii] Observations of the Same Star-forming Galaxies at z similar to 2.ASTROPHYSICAL JOURNAL,892(2),16. |
| MLA | McKinney, Jed,et al."Measuring the Heating and Cooling of the Interstellar Medium at High Redshift: PAH and [C ii] Observations of the Same Star-forming Galaxies at z similar to 2".ASTROPHYSICAL JOURNAL 892.2(2020):16. |
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来源：国家天文台
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