Accuracy of Stellar Mass-to-light Ratios of Nearby Galaxies in the Near-Infrared
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Kim, Taehyun Kim, Minjin Ho, Luis C. Li, Yang A. Jeong, Woong-Seob Kim, Dohyeong Kim, Yongjung Lee, Bomee Lee, Dongseob Lee, Jeong Hwan Pyo, Jeonghyun Shim, Hyunjin Son, Suyeon Song, Hyunmi Yang, Yujin |
| author_facet | Kim, Taehyun Kim, Minjin Ho, Luis C. Li, Yang A. Jeong, Woong-Seob Kim, Dohyeong Kim, Yongjung Lee, Bomee Lee, Dongseob Lee, Jeong Hwan Pyo, Jeonghyun Shim, Hyunjin Son, Suyeon Song, Hyunmi Yang, Yujin |
| contents | Future satellite missions are expected to perform all-sky surveys, thus providing the entire sky near-infrared spectral data and consequently opening a new window to investigate the evolution of galaxies. Specifically, the infrared spectral data facilitate the precise estimation of stellar masses of numerous low-redshift galaxies. We utilize the synthetic spectral energy distribution (SED) of 2853 nearby galaxies drawn from the DustPedia (435) and Stripe 82 regions (2418). The stellar mass-to-light ratio ($M_*/L$) estimation accuracy over a wavelength range of $0.75-5.0$ $μ$m is computed through the SED fitting of the multi-wavelength photometric dataset, which has not yet been intensively explored in previous studies. We find that the scatter in $M_*/L$ is significantly larger in the shorter and longer wavelength regimes due to the effect of the young stellar population and the dust contribution, respectively. While the scatter in $M_*/L$ approaches its minimum ($\sim0.10$ dex) at $\sim1.6$ $μ$m, it remains sensitive to the adopted star formation history model. Furthermore, $M_*/L$ demonstrates weak and strong correlations with the stellar mass and the specific star formation rate (SFR), respectively. Upon adequately correcting the dependence of $M_*/L$ on the specific SFR, the scatter in the $M_*/L$ further reduces to $0.02$ dex at $\sim1.6$ $μ$m. This indicates that the stellar mass can be estimated with an accuracy of $\sim0.02$ dex with a prior knowledge of SFR, which can be estimated using the infrared spectra obtained with future survey missions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_10981 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Accuracy of Stellar Mass-to-light Ratios of Nearby Galaxies in the Near-Infrared Kim, Taehyun Kim, Minjin Ho, Luis C. Li, Yang A. Jeong, Woong-Seob Kim, Dohyeong Kim, Yongjung Lee, Bomee Lee, Dongseob Lee, Jeong Hwan Pyo, Jeonghyun Shim, Hyunjin Son, Suyeon Song, Hyunmi Yang, Yujin Astrophysics of Galaxies Future satellite missions are expected to perform all-sky surveys, thus providing the entire sky near-infrared spectral data and consequently opening a new window to investigate the evolution of galaxies. Specifically, the infrared spectral data facilitate the precise estimation of stellar masses of numerous low-redshift galaxies. We utilize the synthetic spectral energy distribution (SED) of 2853 nearby galaxies drawn from the DustPedia (435) and Stripe 82 regions (2418). The stellar mass-to-light ratio ($M_*/L$) estimation accuracy over a wavelength range of $0.75-5.0$ $μ$m is computed through the SED fitting of the multi-wavelength photometric dataset, which has not yet been intensively explored in previous studies. We find that the scatter in $M_*/L$ is significantly larger in the shorter and longer wavelength regimes due to the effect of the young stellar population and the dust contribution, respectively. While the scatter in $M_*/L$ approaches its minimum ($\sim0.10$ dex) at $\sim1.6$ $μ$m, it remains sensitive to the adopted star formation history model. Furthermore, $M_*/L$ demonstrates weak and strong correlations with the stellar mass and the specific star formation rate (SFR), respectively. Upon adequately correcting the dependence of $M_*/L$ on the specific SFR, the scatter in the $M_*/L$ further reduces to $0.02$ dex at $\sim1.6$ $μ$m. This indicates that the stellar mass can be estimated with an accuracy of $\sim0.02$ dex with a prior knowledge of SFR, which can be estimated using the infrared spectra obtained with future survey missions. |
| title | Accuracy of Stellar Mass-to-light Ratios of Nearby Galaxies in the Near-Infrared |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2411.10981 |