Home > Research > Publications & Outputs > Quantifying the UV-continuum slopes of galaxies...

Electronic data

Links

Text available via DOI:

View graph of relations

Quantifying the UV-continuum slopes of galaxies to z ˜ 10 using deep Hubble+Spitzer/IRAC observations

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published

Standard

Quantifying the UV-continuum slopes of galaxies to z ˜ 10 using deep Hubble+Spitzer/IRAC observations. / Wilkins, Stephen M.; Bouwens, Rychard J.; Oesch, Pascal A. et al.
In: Monthly Notices of the Royal Astronomical Society, Vol. 455, No. 1, 01.01.2016, p. 659-667.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Wilkins, SM, Bouwens, RJ, Oesch, PA, Labbé, I, Sargent, M, Caruana, J, Wardlow, J & Clay, S 2016, 'Quantifying the UV-continuum slopes of galaxies to z ˜ 10 using deep Hubble+Spitzer/IRAC observations', Monthly Notices of the Royal Astronomical Society, vol. 455, no. 1, pp. 659-667. https://doi.org/10.1093/mnras/stv2263

APA

Wilkins, S. M., Bouwens, R. J., Oesch, P. A., Labbé, I., Sargent, M., Caruana, J., Wardlow, J., & Clay, S. (2016). Quantifying the UV-continuum slopes of galaxies to z ˜ 10 using deep Hubble+Spitzer/IRAC observations. Monthly Notices of the Royal Astronomical Society, 455(1), 659-667. https://doi.org/10.1093/mnras/stv2263

Vancouver

Wilkins SM, Bouwens RJ, Oesch PA, Labbé I, Sargent M, Caruana J et al. Quantifying the UV-continuum slopes of galaxies to z ˜ 10 using deep Hubble+Spitzer/IRAC observations. Monthly Notices of the Royal Astronomical Society. 2016 Jan 1;455(1):659-667. Epub 2015 Nov 5. doi: 10.1093/mnras/stv2263

Author

Wilkins, Stephen M. ; Bouwens, Rychard J. ; Oesch, Pascal A. et al. / Quantifying the UV-continuum slopes of galaxies to z ˜ 10 using deep Hubble+Spitzer/IRAC observations. In: Monthly Notices of the Royal Astronomical Society. 2016 ; Vol. 455, No. 1. pp. 659-667.

Bibtex

@article{faa7be556edd464aa8c6f774942c7a5a,
title = "Quantifying the UV-continuum slopes of galaxies to z ˜ 10 using deep Hubble+Spitzer/IRAC observations",
abstract = "Measurements of the UV-continuum slopes β provide valuable information on the physical properties of galaxies forming in the early universe, probing the dust reddening, age, metal content, and even the escape fraction. While constraints on these slopes generally become more challenging at higher redshifts as the UV-continuum shifts out of the Hubble Space Telescope bands (particularly at z > 7), such a characterization actually becomes abruptly easier for galaxies in the redshift window z = 9.5-10.5 due to the Spitzer/Infrared Array Camera 3.6 μm-band probing the rest-UV continuum and the long wavelength baseline between this Spitzer band and the Hubble Hf160w band. Higher S/N constraints on β are possible at z ˜ 10 than at z = 8. Here, we take advantage of this opportunity and five recently discovered bright z = 9.5-10.5 galaxies to present the first measurements of the mean β for a multi-object sample of galaxy candidates at z ˜ 10. We find the measured βobs's of these candidates are -2.1 ± 0.3 ± 0.2 (random and systematic), only slightly bluer than the measured β's (βobs ≈ -1.7) at 3.5 <z <7.5 for galaxies of similar luminosities. Small increases in the stellar ages, metallicities, and dust content of the galaxy population from z ˜ 10 to z ˜ 7 could easily explain the apparent evolution in β.",
keywords = "galaxies: high-redshift, galaxies: ISM, ultraviolet: galaxies",
author = "Wilkins, {Stephen M.} and Bouwens, {Rychard J.} and Oesch, {Pascal A.} and Ivo Labb{\'e} and Mark Sargent and Joseph Caruana and Julie Wardlow and Scott Clay",
year = "2016",
month = jan,
day = "1",
doi = "10.1093/mnras/stv2263",
language = "English",
volume = "455",
pages = "659--667",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "1",

}

RIS

TY - JOUR

T1 - Quantifying the UV-continuum slopes of galaxies to z ˜ 10 using deep Hubble+Spitzer/IRAC observations

AU - Wilkins, Stephen M.

AU - Bouwens, Rychard J.

AU - Oesch, Pascal A.

AU - Labbé, Ivo

AU - Sargent, Mark

AU - Caruana, Joseph

AU - Wardlow, Julie

AU - Clay, Scott

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Measurements of the UV-continuum slopes β provide valuable information on the physical properties of galaxies forming in the early universe, probing the dust reddening, age, metal content, and even the escape fraction. While constraints on these slopes generally become more challenging at higher redshifts as the UV-continuum shifts out of the Hubble Space Telescope bands (particularly at z > 7), such a characterization actually becomes abruptly easier for galaxies in the redshift window z = 9.5-10.5 due to the Spitzer/Infrared Array Camera 3.6 μm-band probing the rest-UV continuum and the long wavelength baseline between this Spitzer band and the Hubble Hf160w band. Higher S/N constraints on β are possible at z ˜ 10 than at z = 8. Here, we take advantage of this opportunity and five recently discovered bright z = 9.5-10.5 galaxies to present the first measurements of the mean β for a multi-object sample of galaxy candidates at z ˜ 10. We find the measured βobs's of these candidates are -2.1 ± 0.3 ± 0.2 (random and systematic), only slightly bluer than the measured β's (βobs ≈ -1.7) at 3.5 <z <7.5 for galaxies of similar luminosities. Small increases in the stellar ages, metallicities, and dust content of the galaxy population from z ˜ 10 to z ˜ 7 could easily explain the apparent evolution in β.

AB - Measurements of the UV-continuum slopes β provide valuable information on the physical properties of galaxies forming in the early universe, probing the dust reddening, age, metal content, and even the escape fraction. While constraints on these slopes generally become more challenging at higher redshifts as the UV-continuum shifts out of the Hubble Space Telescope bands (particularly at z > 7), such a characterization actually becomes abruptly easier for galaxies in the redshift window z = 9.5-10.5 due to the Spitzer/Infrared Array Camera 3.6 μm-band probing the rest-UV continuum and the long wavelength baseline between this Spitzer band and the Hubble Hf160w band. Higher S/N constraints on β are possible at z ˜ 10 than at z = 8. Here, we take advantage of this opportunity and five recently discovered bright z = 9.5-10.5 galaxies to present the first measurements of the mean β for a multi-object sample of galaxy candidates at z ˜ 10. We find the measured βobs's of these candidates are -2.1 ± 0.3 ± 0.2 (random and systematic), only slightly bluer than the measured β's (βobs ≈ -1.7) at 3.5 <z <7.5 for galaxies of similar luminosities. Small increases in the stellar ages, metallicities, and dust content of the galaxy population from z ˜ 10 to z ˜ 7 could easily explain the apparent evolution in β.

KW - galaxies: high-redshift

KW - galaxies: ISM

KW - ultraviolet: galaxies

U2 - 10.1093/mnras/stv2263

DO - 10.1093/mnras/stv2263

M3 - Journal article

VL - 455

SP - 659

EP - 667

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -