تقرير
The Impact of Inclination-dependent Attenuation on Ultraviolet Star Formation Rate Tracers
| العنوان: | The Impact of Inclination-dependent Attenuation on Ultraviolet Star Formation Rate Tracers |
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| المؤلفون: | Doore, Keith, Eufrasio, Rafael T., Lehmer, Bret D., Monson, Erik B., Basu-Zych, Antara, Garofali, Kristen |
| المصدر: | ApJ 931 (2022) 53 |
| سنة النشر: | 2022 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Astrophysics of Galaxies |
| الوصف: | We examine and quantify how hybrid (e.g., UV+IR) star formation rate (SFR) estimators and the $A_{\rm FUV}$-$\beta$ relation depend on inclination for disk-dominated galaxies using spectral energy distribution modeling that utilizes the inclination-dependent attenuation curves described in Doore et al. We perform this analysis on a sample of 133 disk-dominated galaxies from the CANDELS fields and 18 disk galaxies from the Spitzer Infrared Nearby Galaxies Survey and Key Insights on Nearby Galaxies: A Far-Infrared Survey with Herschel samples. We find that both the hybrid SFR estimators and the $A_{\rm FUV}$-$\beta$ relation present clear dependencies on inclination. To quantify this dependence in the hybrid SFR estimators, we derive an inclination and a far-UV and near-IR color-dependent parametric relation for converting observed UV and IR luminosities into SFRs. For the $A_{\rm FUV}$-$\beta$ relation, we introduce an inclination-dependent component that accounts for the majority of the inclination dependence with the scatter of the relation increasing with inclination. We then compare both of these inclination-dependent relations to similar inclination-independent relations found in the literature. From this comparison, we find that the UV+IR correction factor and $A_{\rm FUV}$ for our hybrid and $A_{\rm FUV}$-$\beta$ relations, respectively, result in a reduction in the residual scatter of our sample by approximately a factor of 2. Therefore, we demonstrate that inclination must be considered in hybrid SFR estimators and the $A_{\rm FUV}$-$\beta$ relation to produce more accurate SFR estimates in disk-dominated galaxies. Comment: 24 pages, 15 figures. 23 page body and 1 page appendix. Updated with published version |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-4357/ac67e8 |
| URL الوصول: | http://arxiv.org/abs/2204.09580 |
| رقم الأكسشن: | edsarx.2204.09580 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-4357/ac67e8 |
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