Differential dust attenuation in CALIFA galaxies

N. Vale Asari; R. Cid Fernandes; A. L. Amorim; E. A. D. Lacerda; M. Schlickmann; V. Wild; R. C. Kennicutt

Differential dust attenuation in CALIFA galaxies

N. Vale Asari, R. Cid Fernandes, A. L. Amorim, E. A. D. Lacerda, M. Schlickmann, V. Wild, R. C. Kennicutt

School of Physics and Astronomy

Research output: Contribution to conference › Poster

Abstract

Dust attenuation has long been treated as a simple parameter in SED fitting. Real galaxies are, however, much more complicated: The measured dust attenuation is not a simple function of the dust optical depth, but depends strongly on galaxy inclination and the relative distribution of stars and dust. We study the nebular and stellar dust attenuation in CALIFA galaxies, and propose some empirical recipes to make the dust treatment more realistic in spectral synthesis codes. By adding optical recombination emission lines, we find better constraints for differential attenuation. Those recipes can be applied to unresolved galaxy spectra, and lead to better recovered star formation rates.

Original language	English
Publication status	Published - Jun 2016
Event	The Interplay Between Local and Global Processes in Galaxies - Cozumel, Mexico Duration: 11 Apr 2016 → 15 Apr 2016 http://www.astroscu.unam.mx/galaxies2016/

Conference

Conference	The Interplay Between Local and Global Processes in Galaxies
Country/Territory	Mexico
City	Cozumel
Period	11/04/16 → 15/04/16
Internet address	http://www.astroscu.unam.mx/galaxies2016/

Keywords

Galaxies: evolution
H II regions
Interstellar medium: dust
Extinction

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http://adsabs.harvard.edu/abs/2016ilgp.confE...3V

Cite this

@conference{c2a2a0cdb01641ac8978b6169910f743,

title = "Differential dust attenuation in CALIFA galaxies",

abstract = "Dust attenuation has long been treated as a simple parameter in SED fitting. Real galaxies are, however, much more complicated: The measured dust attenuation is not a simple function of the dust optical depth, but depends strongly on galaxy inclination and the relative distribution of stars and dust. We study the nebular and stellar dust attenuation in CALIFA galaxies, and propose some empirical recipes to make the dust treatment more realistic in spectral synthesis codes. By adding optical recombination emission lines, we find better constraints for differential attenuation. Those recipes can be applied to unresolved galaxy spectra, and lead to better recovered star formation rates.",

keywords = "Galaxies: evolution, H II regions, Interstellar medium: dust, Extinction",

author = "{Vale Asari}, N. and {Cid Fernandes}, R. and Amorim, {A. L.} and Lacerda, {E. A. D.} and M. Schlickmann and V. Wild and Kennicutt, {R. C.}",

year = "2016",

month = jun,

language = "English",

note = "The Interplay Between Local and Global Processes in Galaxies ; Conference date: 11-04-2016 Through 15-04-2016",

url = "http://www.astroscu.unam.mx/galaxies2016/",

}

TY - CONF

T1 - Differential dust attenuation in CALIFA galaxies

AU - Vale Asari, N.

AU - Cid Fernandes, R.

AU - Amorim, A. L.

AU - Lacerda, E. A. D.

AU - Schlickmann, M.

AU - Wild, V.

AU - Kennicutt, R. C.

PY - 2016/6

Y1 - 2016/6

N2 - Dust attenuation has long been treated as a simple parameter in SED fitting. Real galaxies are, however, much more complicated: The measured dust attenuation is not a simple function of the dust optical depth, but depends strongly on galaxy inclination and the relative distribution of stars and dust. We study the nebular and stellar dust attenuation in CALIFA galaxies, and propose some empirical recipes to make the dust treatment more realistic in spectral synthesis codes. By adding optical recombination emission lines, we find better constraints for differential attenuation. Those recipes can be applied to unresolved galaxy spectra, and lead to better recovered star formation rates.

AB - Dust attenuation has long been treated as a simple parameter in SED fitting. Real galaxies are, however, much more complicated: The measured dust attenuation is not a simple function of the dust optical depth, but depends strongly on galaxy inclination and the relative distribution of stars and dust. We study the nebular and stellar dust attenuation in CALIFA galaxies, and propose some empirical recipes to make the dust treatment more realistic in spectral synthesis codes. By adding optical recombination emission lines, we find better constraints for differential attenuation. Those recipes can be applied to unresolved galaxy spectra, and lead to better recovered star formation rates.

KW - Galaxies: evolution

KW - H II regions

KW - Interstellar medium: dust

KW - Extinction

M3 - Poster

T2 - The Interplay Between Local and Global Processes in Galaxies

Y2 - 11 April 2016 through 15 April 2016

ER -

Differential dust attenuation in CALIFA galaxies

Abstract

Conference

Keywords

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Cite this