Dust Attenuation Curves at z similar to 0.8 from LEGA-C: Precise Constraints on the Slope and 2175 angstrom Bump Strength

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Dust Attenuation Curves at z similar to 0.8 from LEGA-C : Precise Constraints on the Slope and 2175 angstrom Bump Strength. / Barisic, Ivana; Pacifici, Camilla; van der Wel, Arjen; Straatman, Caroline; Bell, Eric F.; Bezanson, Rachel; Brammer, Gabriel; D'Eugenio, Francesco; Franx, Marijn; van Houdt, Josha; Maseda, Michael V.; Muzzin, Adam; Sobral, David; Wu, Po-Feng.

In: Astrophysical Journal, Vol. 903, No. 2, 146, 01.11.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Barisic, I, Pacifici, C, van der Wel, A, Straatman, C, Bell, EF, Bezanson, R, Brammer, G, D'Eugenio, F, Franx, M, van Houdt, J, Maseda, MV, Muzzin, A, Sobral, D & Wu, P-F 2020, 'Dust Attenuation Curves at z similar to 0.8 from LEGA-C: Precise Constraints on the Slope and 2175 angstrom Bump Strength', Astrophysical Journal, vol. 903, no. 2, 146. https://doi.org/10.3847/1538-4357/abba37

APA

Barisic, I., Pacifici, C., van der Wel, A., Straatman, C., Bell, E. F., Bezanson, R., Brammer, G., D'Eugenio, F., Franx, M., van Houdt, J., Maseda, M. V., Muzzin, A., Sobral, D., & Wu, P-F. (2020). Dust Attenuation Curves at z similar to 0.8 from LEGA-C: Precise Constraints on the Slope and 2175 angstrom Bump Strength. Astrophysical Journal, 903(2), [146]. https://doi.org/10.3847/1538-4357/abba37

Vancouver

Barisic I, Pacifici C, van der Wel A, Straatman C, Bell EF, Bezanson R et al. Dust Attenuation Curves at z similar to 0.8 from LEGA-C: Precise Constraints on the Slope and 2175 angstrom Bump Strength. Astrophysical Journal. 2020 Nov 1;903(2). 146. https://doi.org/10.3847/1538-4357/abba37

Author

Barisic, Ivana ; Pacifici, Camilla ; van der Wel, Arjen ; Straatman, Caroline ; Bell, Eric F. ; Bezanson, Rachel ; Brammer, Gabriel ; D'Eugenio, Francesco ; Franx, Marijn ; van Houdt, Josha ; Maseda, Michael V. ; Muzzin, Adam ; Sobral, David ; Wu, Po-Feng. / Dust Attenuation Curves at z similar to 0.8 from LEGA-C : Precise Constraints on the Slope and 2175 angstrom Bump Strength. In: Astrophysical Journal. 2020 ; Vol. 903, No. 2.

Bibtex

@article{efee46e90adf40fe8bd52948abc5bdff,
title = "Dust Attenuation Curves at z similar to 0.8 from LEGA-C: Precise Constraints on the Slope and 2175 angstrom Bump Strength",
abstract = "We present a novel approach to measure the attenuation curves of 485 individual star-forming galaxies with M-* > 10(10) M-circle dot based on deep optical spectra from the VLT/VIMOS LEGA-C survey and multiband photometry in the COSMOS field. Most importantly, we find that the attenuation curves in the rest-frame 3000-4500 angstrom range are typically almost twice as steep as the Milky Way, LMC, SMC, and Calzetti attenuation curves, which is in agreement with recent studies of the integrated light of present-day galaxies. The attenuation at 4500 angstrom and the slope strongly correlate with the galaxy inclination: face-on galaxies show less attenuation and steeper curves compared to edge-on galaxies, suggesting that geometric effects dominate observed variations in attenuation. Our new method produces 2175 angstrom UV bump detections for 260 individual galaxies. Even though obvious correlations between UV bump strength and global galaxy properties are absent, strong UV bumps are most often seen in face-on, lower-mass galaxies (10 < log(10)(M-*/M-circle dot) < 10.5) with low overall attenuation. Finally, we produce a typical attenuation curve for star-forming galaxies at z similar to 0.8; this prescription represents the effect of dust on the integrated spectral energy distributions of high-redshift galaxies more accurately than commonly used attenuation laws.",
keywords = "Interstellar dust extinction, STAR-FORMING GALAXIES, ULTRAVIOLET EXTINCTION CURVES, SPECTRAL ENERGY-DISTRIBUTION, INTERSTELLAR EXTINCTION, INSIGHTS, SHAPES, PHOTOMETRY, SCATTERING, STARLIGHT, EVOLUTION",
author = "Ivana Barisic and Camilla Pacifici and {van der Wel}, Arjen and Caroline Straatman and Bell, {Eric F.} and Rachel Bezanson and Gabriel Brammer and Francesco D'Eugenio and Marijn Franx and {van Houdt}, Josha and Maseda, {Michael V.} and Adam Muzzin and David Sobral and Po-Feng Wu",
year = "2020",
month = nov,
day = "1",
doi = "10.3847/1538-4357/abba37",
language = "English",
volume = "903",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "2",

}

RIS

TY - JOUR

T1 - Dust Attenuation Curves at z similar to 0.8 from LEGA-C

T2 - Precise Constraints on the Slope and 2175 angstrom Bump Strength

AU - Barisic, Ivana

AU - Pacifici, Camilla

AU - van der Wel, Arjen

AU - Straatman, Caroline

AU - Bell, Eric F.

AU - Bezanson, Rachel

AU - Brammer, Gabriel

AU - D'Eugenio, Francesco

AU - Franx, Marijn

AU - van Houdt, Josha

AU - Maseda, Michael V.

AU - Muzzin, Adam

AU - Sobral, David

AU - Wu, Po-Feng

PY - 2020/11/1

Y1 - 2020/11/1

N2 - We present a novel approach to measure the attenuation curves of 485 individual star-forming galaxies with M-* > 10(10) M-circle dot based on deep optical spectra from the VLT/VIMOS LEGA-C survey and multiband photometry in the COSMOS field. Most importantly, we find that the attenuation curves in the rest-frame 3000-4500 angstrom range are typically almost twice as steep as the Milky Way, LMC, SMC, and Calzetti attenuation curves, which is in agreement with recent studies of the integrated light of present-day galaxies. The attenuation at 4500 angstrom and the slope strongly correlate with the galaxy inclination: face-on galaxies show less attenuation and steeper curves compared to edge-on galaxies, suggesting that geometric effects dominate observed variations in attenuation. Our new method produces 2175 angstrom UV bump detections for 260 individual galaxies. Even though obvious correlations between UV bump strength and global galaxy properties are absent, strong UV bumps are most often seen in face-on, lower-mass galaxies (10 < log(10)(M-*/M-circle dot) < 10.5) with low overall attenuation. Finally, we produce a typical attenuation curve for star-forming galaxies at z similar to 0.8; this prescription represents the effect of dust on the integrated spectral energy distributions of high-redshift galaxies more accurately than commonly used attenuation laws.

AB - We present a novel approach to measure the attenuation curves of 485 individual star-forming galaxies with M-* > 10(10) M-circle dot based on deep optical spectra from the VLT/VIMOS LEGA-C survey and multiband photometry in the COSMOS field. Most importantly, we find that the attenuation curves in the rest-frame 3000-4500 angstrom range are typically almost twice as steep as the Milky Way, LMC, SMC, and Calzetti attenuation curves, which is in agreement with recent studies of the integrated light of present-day galaxies. The attenuation at 4500 angstrom and the slope strongly correlate with the galaxy inclination: face-on galaxies show less attenuation and steeper curves compared to edge-on galaxies, suggesting that geometric effects dominate observed variations in attenuation. Our new method produces 2175 angstrom UV bump detections for 260 individual galaxies. Even though obvious correlations between UV bump strength and global galaxy properties are absent, strong UV bumps are most often seen in face-on, lower-mass galaxies (10 < log(10)(M-*/M-circle dot) < 10.5) with low overall attenuation. Finally, we produce a typical attenuation curve for star-forming galaxies at z similar to 0.8; this prescription represents the effect of dust on the integrated spectral energy distributions of high-redshift galaxies more accurately than commonly used attenuation laws.

KW - Interstellar dust extinction

KW - STAR-FORMING GALAXIES

KW - ULTRAVIOLET EXTINCTION CURVES

KW - SPECTRAL ENERGY-DISTRIBUTION

KW - INTERSTELLAR EXTINCTION

KW - INSIGHTS

KW - SHAPES

KW - PHOTOMETRY

KW - SCATTERING

KW - STARLIGHT

KW - EVOLUTION

U2 - 10.3847/1538-4357/abba37

DO - 10.3847/1538-4357/abba37

M3 - Journal article

VL - 903

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 146

ER -

ID: 319533486