| | |
| | |
Stat |
Members: 3643 Articles: 2'487'895 Articles rated: 2609
28 March 2024 |
|
| | | |
|
Article overview
| |
|
The nature of the red disk-like galaxies at high redshift: dust attenuation and intrinsically red stellar populations | D. Pierini
; C. Maraston
; K. D. Gordon
; A. N. Witt
; | Date: |
14 Jul 2005 | Journal: | Mon.Not.Roy.Astron.Soc. 363 (2005) 131-145 | Subject: | astro-ph | Affiliation: | MPE, Garching, Germany, University of Oxford, Oxford, U.K., Steward Observatory, Tucson, AZ, U.S.A., UT, Toledo, OH, U.S.A. | Abstract: | We investigate which conditions of dust attenuation and stellar populations allow models of dusty, continuously star-forming, bulge-less disk galaxies at 0.85.3, Ic-K>4, J-K>2.3). As a main novelty, we use stellar population models that include the thermally pulsating Asymptotic Giant Branch (TP-AGB) phase of stellar evolution. The star formation rate of the models declines exponentially as a function of time, the e-folding time being longer than 3 Gyr. In addition, we use calculations of radiative transfer of the stellar and scattered radiation through different dusty interstellar media in order to explore the wide parameter space of dust attenuation. We find that synthetic disks can exhibit red optical/near-infrared colours because of reddening by dust, but only if they have been forming stars for at least about 1 Gyr. Extremely few models barely exhibit Rc-K>5.3, if the inclination i=90 deg and if the opacity 2*tauV>6. Hence, Rc-K-selected galaxies at 10.5. This explains the large fraction of observed, edge-on disk-like galaxies with Ks<19.5 and F814W-Ks>4. Finally, models with 21 for i about 70 deg). In conclusion, red disk-like galaxies at 0.8 | Source: | arXiv, astro-ph/0507345 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |