Radiative transfer in disc galaxies - IV. The effects of dust attenuation on bulge and disc structural parameters
Radiative transfer in disc galaxies - IV. The effects of dust attenuation on bulge and disc structural parameters
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盘状星系中的辐射传输 - IV 尘埃衰减对核球和盘状结构参数的影响
DOI:
10.1111/j.1365-2966.2010.16243.x
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发表时间:
2010
影响因子:
4.8
通讯作者:
Falony
中科院分区:
文献类型:
--
作者:
Gadotti;Falony
Combining Monte Carlo radiative transfer simulations and accurate 2D bulge/disc decompositions, we present a new study to investigate the effects of dust attenuation on the apparent structural properties of the disc and bulge of spiral galaxies. We find that dust affects the results from such decompositions in ways which cannot be identified when one studies dust effects on bulge and disc components separately. In particular, the effects of dust in galaxies hosting pseudo-bulges might be different from those in galaxies hosting classical bulges, even if their dust content is identical. Confirming previous results, we find that disc scalelengths are overestimated when dust effects are important. In addition, we also find that bulge effective radii and Sérsic indices are underestimated. Furthermore, the apparent attenuation of the integrated disc light is underestimated, whereas the corresponding attenuation of bulge light is overestimated. Dust effects are more significant for the bulge parameters, and, combined, they lead to a strong underestimation of the bulge-to-disc ratio, which can reach a factor of 2 in theVband, even at relatively low galaxy inclinations and dust opacities. Nevertheless, it never reaches factors larger than about 3, which corresponds to a factor of 2 in bulge-to-total ratio. Such effect can have an impact on studies of the black hole/bulge scaling relations.
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DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
A. Mazure;H. Capelato
通讯作者:
H. Capelato
DOI:
10.1086/425651
发表时间:
2004-09
期刊:
The Astrophysical Journal
影响因子:
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作者:
D. Pierini;K. Gordon;A. Witt;G. J. M. Mpe;Garching;Germany;S. Observatory;Tucson;Az;
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D. Pierini;K. Gordon;A. Witt;G. J. M. Mpe;Garching;Germany;S. Observatory;Tucson;Az;
DOI:
10.1111/j.1365-2966.2005.09404.x
发表时间:
2005-08
影响因子:
4.8
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通讯作者:
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DOI:
10.1046/j.1365-8711.2003.06770.x
发表时间:
2003-04
影响因子:
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