Estimating dust attenuation from galactic spectra : II. stellar and gas attenuation in star-forming and diffuse ionized gas regions in MaNGA
dc.contributor.author | Li, Niu | pt_BR |
dc.contributor.author | Li, Cheng | pt_BR |
dc.contributor.author | Mo, Houjun | pt_BR |
dc.contributor.author | Zhou, Shuang | pt_BR |
dc.contributor.author | Liang, Fu-Heng | pt_BR |
dc.contributor.author | Boquien, Médéric | pt_BR |
dc.contributor.author | Drory, Niv | pt_BR |
dc.contributor.author | Fernández-Trincado, José Gregorio | pt_BR |
dc.contributor.author | Greener, Michael | pt_BR |
dc.contributor.author | Riffel, Rogério | pt_BR |
dc.date.accessioned | 2022-06-25T05:05:50Z | pt_BR |
dc.date.issued | 2021 | pt_BR |
dc.identifier.issn | 0004-637X | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/241099 | pt_BR |
dc.description.abstract | We investigate the dust attenuation in both stellar populations and ionized gas in kiloparsec-scale regions in nearby galaxies using integral field spectroscopy data from MaNGA MPL-9. We identify star-forming (H II) and diffuse ionized gas (DIG) regions from MaNGA data cubes. From the stacked spectrum of each region, we measure the stellar attenuation, E( ) B V - star, using the technique developed by Li et al., as well as the gas attenuation, E( ) B V - gas, from the Balmer decrement. We then examine the correlation of E( ) B V - star, E( ) B V - gas, E() () B V EB V - -- gas star, and E( )( ) B V EB V - - star gas with 16 regional/global properties, and for regions with different Hα surface brightnesses (ΣHα). We find a stronger correlation between E( ) B V - star and E( ) B V - gas in regions of higher ΣHα. The luminosity-weighted age (tL) is found to be the property that is the most strongly correlated with E( ) B V - star, and consequently, with E() () B V EB V - -- gas star and E( )( ) B V EB V - - star gas. At fixed ΣHα, log10tL is linearly and negatively correlated with E( ) B V - star E( ) B V - gas at all ages. Gas-phase metallicity and ionization level are important for the attenuation in the gas. Our results indicate that the ionizing source for DIG regions is likely distributed in the outskirts of galaxies, while for H II regions, our results can be well explained by the two-component dust model of Charlot & Fall. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | The astrophysical journal. Bristol. Vol. 917, no. 2 (Aug. 2021), 72, 22 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Poeira cosmica | pt_BR |
dc.subject | Interstellar dust | en |
dc.subject | Interstellar dust extinction | en |
dc.subject | Populacoes estelares | pt_BR |
dc.subject | Stellar populations | en |
dc.subject | Gas ionizado | pt_BR |
dc.subject | Formacao de estrelas | pt_BR |
dc.subject | Hot ionized medium | en |
dc.subject | Warm ionized medium | en |
dc.subject | Galaxy spestroscopy | en |
dc.subject | Emission nebulae | en |
dc.subject | Interstellar extinction | en |
dc.subject | Star formation | en |
dc.subject | Star forming regions | en |
dc.title | Estimating dust attenuation from galactic spectra : II. stellar and gas attenuation in star-forming and diffuse ionized gas regions in MaNGA | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001138047 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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