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Systematic biases in determining dust attenuation curves through galaxy SED fitting
- Source :
- Qin, J, Zheng, X Z, Fang, M, Pan, Z, Wuyts, S, Shi, Y, Peng, Y, Gonzalez, V, Bian, F, Huang, J, Gu, Q, Liu, W, Tan, Q, Shi, D D, Ren, J, Zhang, Y, Qiao, M, Wen, R & Liu, S 2022, ' Systematic biases in determining dust attenuation curves through galaxy SED fitting ', Monthly Notices of the Royal Astronomical Society, vol. 511, no. 1, pp. 765-783 . https://doi.org/10.1093/mnras/stac132
- Publication Year :
- 2022
- Publisher :
- Oxford University Press (OUP), 2022.
-
Abstract
- While the slope of the dust attenuation curve ($\delta$) is found to correlate with effective dust attenuation ($A_V$) as obtained through spectral energy distribution (SED) fitting, it remains unknown how the fitting degeneracies shape this relation. We examine the degeneracy effects by fitting SEDs of a sample of local star-forming galaxies (SFGs) selected from the Galaxy And Mass Assembly survey, in conjunction with mock galaxy SEDs of known attenuation parameters. A well-designed declining starburst star formation history is adopted to generate model SED templates with intrinsic UV slope ($\beta_0$) spanning over a reasonably wide range. The best-fitting $\beta_0$ for our sample SFGs shows a wide coverage, dramatically differing from the limited range of $\beta_0<br />Comment: 21 pages, 13 figures, accepted for publication in the MNRAS, Comments welcome!
- Subjects :
- Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
FOS: Physical sciences
Astrophysics::Solar and Stellar Astrophysics
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics - Astrophysics of Galaxies
Astrophysics::Galaxy Astrophysics
Subjects
Details
- ISSN :
- 13652966 and 00358711
- Volume :
- 511
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi.dedup.....9781036281a683dd6d299b349c5c73a7