UV and NIR size of the low-mass field galaxies: the UV compact galaxies
Autor: | Jiasheng Huang, Cheng Cheng, Sophia Dai, Lizhi Xie, Wei Du, Shumei Wu, Xu Shao, C. K. Xu, Roger Leiton, Gustavo Orellana-González, Nicole Araneda, Zhizheng Pan, P. Assmann |
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Rok vydání: | 2020 |
Předmět: |
Physics
Stellar population Stellar mass 010308 nuclear & particles physics Star formation FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Radius Astrophysics - Astrophysics of Galaxies 01 natural sciences Redshift Galaxy Stars Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Low Mass 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics |
Zdroj: | Astronomy & Astrophysics. 633:A105 |
ISSN: | 1432-0746 0004-6361 |
DOI: | 10.1051/0004-6361/201936186 |
Popis: | Most of the massive star-forming galaxies are found to have `inside-out' stellar mass growth modes, which means the inner parts of the galaxies mainly consist of the older stellar population, while the star forming in the outskirt of the galaxy is still ongoing. The high-resolution HST images from Hubble Deep UV Legacy Survey (HDUV) and Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) projects with the unprecedented depth in both F275W and F160W bands are the perfect data sets to study the forming and formed stellar distribution directly. We selected the low redshift ($0.05 < z_{\rm spec} < 0.3$) galaxy sample from the GOODS-North field where the HST F275W and F160W images are available. Then we measured the half light radius in F275W and F160W bands, which are the indicators of the star formation and stellar mass. By comparing the F275W and F160W half light radius, we find the massive galaxies are mainly follow the `inside-out' growth which is consistent with the previous results. Moreover, the HST F275W and F160W images reveal that some of the low-mass galaxies ($ 10 pages, 10 Figures, accepted by A&A |
Databáze: | OpenAIRE |
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