LyC leaking galaxies: properties in the mid-infrared range based on the wise space telescope data
Heading:
| Izotova, IY, Izotov, YI |
| Kinemat. fiz. nebesnyh tel (Online) 2023, 39(2):34-46 |
| https://doi.org/10.15407/kfnt2023.02.034 |
| Start Page: Extragalactic Astronomy |
| Language: Ukrainian |
Abstract: We study the photometric properties in the mid-infrared range of the sample of compact star-forming galaxies leaking radiation in the Lyman continuum (LyC) and Lyα line aiming to find characteristics which can be used as quantitave indicators of the escape fractions fesc(Lyα) and fesc(LyC). Possible relations are analysed between colour indeces of galaxies in the mid-infrared range based on WISE data, on the one hand, and escape fractions of LyC and emission, on the other hand. We find dependencies of escape fractions fesc(Lyα) and fesc(LyC) on the colour index W1 – W4, where W1 and W4 are apparent WISE magnitudes at wavelengths 3.4 and 22 μm, respectively. This makes W1 – W4 useful quantitative characteristic for estimating of the escape fractions fesc(Lyα) and fesc(LyC) along with some characteristics of LyC leakers revealed earlier in the optical and UV ranges. Thus, emission of galaxies in the mid-infrared range can be used to search for candidates to LyC leaking galaxies for their future observations. |
| Keywords: compact star-forming galaxies, infrared radiation, interstellar dust, LyC leaking galaxies |
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