Diagnosing deceivingly cold dusty galaxies at 3.5
Autor:
Jin, Shuowen, Daddi, Emanuele, Magdis, Georgios E., Liu, Daizhong, Weaver, John R., Tan, Qinghua, Valentino, Francesco, Gao, Yu, Schinnerer, Eva, Calabro, Antonello, Gu, Qiusheng, Sese, David Blanquez
Rok vydání:
2022
Předmět:
Zdroj:
A&A 665, A3 (2022)
Druh dokumentu:
Working Paper
DOI:
10.1051/0004-6361/202243341
Popis:
Using NOEMA and ALMA 3mm line scans, we measure spectroscopic redshifts of six new dusty galaxies at 3.56, based on template IR spectrum energy distribution (SED) from known submillimeter galaxies at z=4--6. Dust SED analyses explain the photo-z overestimate from seemingly cold dust temperatures (Td) and steep Rayleigh-Jeans (RJ) slopes, providing additional examples of cold dusty galaxies impacted by the Cosmic Microwave Background (CMB). We therefore study the general properties of the enlarged sample of 10 ``cold" dusty galaxies over 3.5~4, together with the severe impact of the CMB on their RJ observables, paving the way for the diagnostics of optically thick dust in the early universe. Conventional gas mass estimates based on RJ dust continuum luminosities implicitly assume an optically thin case, overestimating gas masses by a factor of 2--3 on average in compact dusty star-forming galaxies.
Comment: Published version in A&A
Databáze:
arXiv
Externí odkaz:
| Autor: | Jin, Shuowen, Daddi, Emanuele, Magdis, Georgios E., Liu, Daizhong, Weaver, John R., Tan, Qinghua, Valentino, Francesco, Gao, Yu, Schinnerer, Eva, Calabro, Antonello, Gu, Qiusheng, Sese, David Blanquez |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | A&A 665, A3 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1051/0004-6361/202243341 |
| Popis: | Using NOEMA and ALMA 3mm line scans, we measure spectroscopic redshifts of six new dusty galaxies at 3.5 Comment: Published version in A&A |
| Databáze: | arXiv |
| Externí odkaz: |
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