A Complete 16 micron-Selected Galaxy Sample at $z\sim1$: Mid-infrared Spectral Energy Distributions
| Autor: | M. Pereira Santaella, Dimitra Rigopoulou, M. Musin, S. P. Willner, Georgios E. Magdis, Cheng Cheng, Lulu Fan, Ge Jin, C. He, S. M. Faber, Y.-S. Dai, H. Xu, P. Assmann, X. Y. Xia, Haojing Yan, J.-S. Huang, Giovanni G. Fazio, C.-N. Hao, Zhong Lin Wang, Isabella Cortzen, Shumei Wu, A. Esamdin, Xiangjun Shao, K. C. Xu |
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| Přispěvatelé: | Huang, J. S. [0000-0001-6511-8745], Dai, Y. S. [0000-0002-7928-416X], Willner, S. P. [0000-0002-9895-5758], Faber, S. M. [0000-0003-4996-214X], Cheng, C. [0000-0003-0202-0534], Yan, H. [0000-0001-7592-7714], Rigopoulou, D. [0000-0001-6854-7545], Pereira Santaella, M. [0000-0002-4005-9619], Magdis, G. [0000-0002-4872-2294], Cortzen, I. [0000-0001-9197-7623], Fazio, G. G. [0000-0002-0670-0708], Fan, L. [0000-0003-4200-4432], Jin, G. [0000-0003-3087-318X], Esamdin, A. [0000-0003-1845-4900], National Natural Science Foundation of China (NSFC), Chinese Academy of Sciences (CAS), Danish National Research Foundation (DNRF), Science and Technology Facilities Council (STFC), South America Center for Astronomy (CASSACA) |
| Rok vydání: | 2021 |
| Předmět: |
Infrared galaxies
Active galactic nucleus Cosmology and Nongalactic Astrophysics (astro-ph.CO) Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Sky surveys Luminosity Astrophysics::Solar and Stellar Astrophysics Astrophysics::Galaxy Astrophysics Physics Luminous infrared galaxy Star formation Computer Science::Information Retrieval Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Redshift Galaxy Luminous infrared galaxies Wavelength Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Spectral energy distribution Astrophysics::Earth and Planetary Astrophysics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial instname Huang, J-S, Dai, Y-S, Willner, S P, Faber, S M, Cheng, C, Xu, H, Yan, H, Wu, S, Shao, X, Hao, C, Xia, X, Rigopoulou, D, Pereira Santaella, M, Magdis, G, Cortzen, I, Fazio, G G, Assmann, P, Fan, L, Musin, M, Wang, Z, Xu, K C, He, C, Jin, G & Esamdin, A 2021, ' A Complete 16 μm Selected Galaxy Sample at z ∼ 1: Mid-infrared Spectral Energy Distributions ', Astrophysical Journal, vol. 912, no. 2, 161 . https://doi.org/10.3847/1538-4357/abec50 |
| DOI: | 10.48550/arxiv.2103.04585 |
| Popis: | We describe a complete, flux-density-limited sample of galaxies at redshift $0.8 < z < 1.3$ selected at 16 micron. At the selection wavelength near 8 micron rest, the observed emission comes both from dust heated by intense star formation and from active galactic nuclei (AGNs). Fitting the spectral energy distributions (SEDs) of the sample galaxies to local-galaxy templates reveals that more than half the galaxies have SEDs dominated by star formation. About one sixth of the galaxy SEDs are dominated by an AGN, and nearly all the rest of the SEDs are composite. Comparison with X-ray and far-infrared observations shows that combinations of luminosities at rest-frame 4.5 and 8 micron give good measures of both AGN luminosity and star-formation rate. The sample galaxies mostly follow the established star-forming main sequence for $z=1$ galaxies, but of the galaxies more than 0.5 dex above that main sequence, more than half have AGN-type SEDs. Similarly, the most luminous AGNs tend to have higher star-formation rates than the main sequence value. Galaxies with stellar masses $>$10$^{11}$\,\Msun\ are unlikely to host an AGN. About 1% of the sample galaxies show an SED with dust emission typical of neither star formation nor an AGN. 14 pages, 5 tables, 29 figures, ApJ accepted v2 corrects author name formatting |
| Databáze: | OpenAIRE |
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