The Far-infrared Emission of the First Massive Galaxies
Massive Population II galaxies undergoing the first phase of vigorous star formation after the initial Population III stage should have high energy densities and silicate-rich interstellar dust. We have modeled the resulting far-infrared spectral energy distributions (SEDs), demonstrating that they...
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0004637X_v869_n1_p_DeRossi |
| Aporte de: |
| id |
todo:paper_0004637X_v869_n1_p_DeRossi |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_0004637X_v869_n1_p_DeRossi2023-10-03T14:02:45Z The Far-infrared Emission of the First Massive Galaxies De Rossi, M.E. Rieke, G.H. Shivaei, I. Bromm, V. Lyu, J. galaxies: abundances galaxies: evolution galaxies: high-redshift infrared: galaxies Massive Population II galaxies undergoing the first phase of vigorous star formation after the initial Population III stage should have high energy densities and silicate-rich interstellar dust. We have modeled the resulting far-infrared spectral energy distributions (SEDs), demonstrating that they are shifted substantially to bluer ("warmer") wavelengths relative to the best fitting ones at z ≈ 3, and with strong outputs in the 10-40 μm range. When combined with a low level of emission by carbon dust, their SEDs match that of Haro 11, a local moderately low-metallicity galaxy undergoing a very young and vigorous starburst that is likely to approximate the relevant conditions in young Population II galaxies. We expect to see similar SEDs at high redshifts (z 5) given the youth of galaxies at this epoch. In fact, we find a progression with redshift in observed galaxy SEDs, from those resembling local ones at 2 ≲ z < 4 to a closer resemblance with Haro 11 at 5 ≲ z < 7. In addition to the insight on conditions in high-redshift galaxies, this result implies that estimates of the total infrared luminosities at z ∼ 6 based on measurements near λ ∼ 1 mm can vary by factors of 2-4, depending on the SED template used. Currently popular modified blackbodies or local templates can result in significant underestimates compared with the preferred template based on the SED of Haro 11. © 2018. The American Astronomical Society. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004637X_v869_n1_p_DeRossi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
galaxies: abundances galaxies: evolution galaxies: high-redshift infrared: galaxies |
| spellingShingle |
galaxies: abundances galaxies: evolution galaxies: high-redshift infrared: galaxies De Rossi, M.E. Rieke, G.H. Shivaei, I. Bromm, V. Lyu, J. The Far-infrared Emission of the First Massive Galaxies |
| topic_facet |
galaxies: abundances galaxies: evolution galaxies: high-redshift infrared: galaxies |
| description |
Massive Population II galaxies undergoing the first phase of vigorous star formation after the initial Population III stage should have high energy densities and silicate-rich interstellar dust. We have modeled the resulting far-infrared spectral energy distributions (SEDs), demonstrating that they are shifted substantially to bluer ("warmer") wavelengths relative to the best fitting ones at z ≈ 3, and with strong outputs in the 10-40 μm range. When combined with a low level of emission by carbon dust, their SEDs match that of Haro 11, a local moderately low-metallicity galaxy undergoing a very young and vigorous starburst that is likely to approximate the relevant conditions in young Population II galaxies. We expect to see similar SEDs at high redshifts (z 5) given the youth of galaxies at this epoch. In fact, we find a progression with redshift in observed galaxy SEDs, from those resembling local ones at 2 ≲ z < 4 to a closer resemblance with Haro 11 at 5 ≲ z < 7. In addition to the insight on conditions in high-redshift galaxies, this result implies that estimates of the total infrared luminosities at z ∼ 6 based on measurements near λ ∼ 1 mm can vary by factors of 2-4, depending on the SED template used. Currently popular modified blackbodies or local templates can result in significant underestimates compared with the preferred template based on the SED of Haro 11. © 2018. The American Astronomical Society. All rights reserved. |
| format |
JOUR |
| author |
De Rossi, M.E. Rieke, G.H. Shivaei, I. Bromm, V. Lyu, J. |
| author_facet |
De Rossi, M.E. Rieke, G.H. Shivaei, I. Bromm, V. Lyu, J. |
| author_sort |
De Rossi, M.E. |
| title |
The Far-infrared Emission of the First Massive Galaxies |
| title_short |
The Far-infrared Emission of the First Massive Galaxies |
| title_full |
The Far-infrared Emission of the First Massive Galaxies |
| title_fullStr |
The Far-infrared Emission of the First Massive Galaxies |
| title_full_unstemmed |
The Far-infrared Emission of the First Massive Galaxies |
| title_sort |
far-infrared emission of the first massive galaxies |
| url |
http://hdl.handle.net/20.500.12110/paper_0004637X_v869_n1_p_DeRossi |
| work_keys_str_mv |
AT derossime thefarinfraredemissionofthefirstmassivegalaxies AT riekegh thefarinfraredemissionofthefirstmassivegalaxies AT shivaeii thefarinfraredemissionofthefirstmassivegalaxies AT brommv thefarinfraredemissionofthefirstmassivegalaxies AT lyuj thefarinfraredemissionofthefirstmassivegalaxies AT derossime farinfraredemissionofthefirstmassivegalaxies AT riekegh farinfraredemissionofthefirstmassivegalaxies AT shivaeii farinfraredemissionofthefirstmassivegalaxies AT brommv farinfraredemissionofthefirstmassivegalaxies AT lyuj farinfraredemissionofthefirstmassivegalaxies |
| _version_ |
1807324167718043648 |