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    Rights statement: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Cheng Cheng, Edo Ibar, Ian Smail, Juan Molina, David Sobral, Andrés Escala, Philip Best, Rachel Cochrane, Steven Gillman, Mark Swinbank, R J Ivison, Jia-Sheng Huang, Thomas M Hughes, Eric Villard, Michele Cirasuolo, A kpc-scale-resolved study of unobscured and obscured star formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS, Monthly Notices of the Royal Astronomical Society, Volume 499, Issue 4, December 2020, Pages 5241–5256 is available online at: https://academic.oup.com/mnras/article-abstract/499/4/5241/5917428

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A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS

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A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS. / Cheng, Cheng; Ibar, Edo; Smail, Ian; Molina, Juan; Sobral, David; Escala, Andrés; Best, Philip; Cochrane, Rachel; Gillman, Steven; Swinbank, Mark; Ivison, R. J.; Huang, Jia-Sheng; Hughes, Thomas M.; Villard, Eric; Cirasuolo, Michele.

In: Monthly Notices of the Royal Astronomical Society, Vol. 499, No. 4, 01.12.2020, p. 5241–5256.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Cheng, C, Ibar, E, Smail, I, Molina, J, Sobral, D, Escala, A, Best, P, Cochrane, R, Gillman, S, Swinbank, M, Ivison, RJ, Huang, J-S, Hughes, TM, Villard, E & Cirasuolo, M 2020, 'A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS', Monthly Notices of the Royal Astronomical Society, vol. 499, no. 4, pp. 5241–5256. https://doi.org/10.1093/mnras/staa3036

APA

Cheng, C., Ibar, E., Smail, I., Molina, J., Sobral, D., Escala, A., Best, P., Cochrane, R., Gillman, S., Swinbank, M., Ivison, R. J., Huang, J-S., Hughes, T. M., Villard, E., & Cirasuolo, M. (2020). A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS. Monthly Notices of the Royal Astronomical Society, 499(4), 5241–5256. https://doi.org/10.1093/mnras/staa3036

Vancouver

Cheng C, Ibar E, Smail I, Molina J, Sobral D, Escala A et al. A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS. Monthly Notices of the Royal Astronomical Society. 2020 Dec 1;499(4):5241–5256. https://doi.org/10.1093/mnras/staa3036

Author

Cheng, Cheng ; Ibar, Edo ; Smail, Ian ; Molina, Juan ; Sobral, David ; Escala, Andrés ; Best, Philip ; Cochrane, Rachel ; Gillman, Steven ; Swinbank, Mark ; Ivison, R. J. ; Huang, Jia-Sheng ; Hughes, Thomas M. ; Villard, Eric ; Cirasuolo, Michele. / A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS. In: Monthly Notices of the Royal Astronomical Society. 2020 ; Vol. 499, No. 4. pp. 5241–5256.

Bibtex

@article{ea39df1232a848eebb710f3a31f0512b,
title = "A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS",
abstract = "We present Atacama Large Millimeter/Submillimeter Array (ALMA) continuum observations of a sample of nine star-forming galaxies at redshifts 1.47 and 2.23 selected from the High-z Emission Line Survey (HiZELS). Four galaxies in our sample are detected at high significance by ALMA at a resolution of 0′′.25 at rest-frame 355 μm. Together with the previously observed H α emission, from adaptive optics-assisted integral-field-unit spectroscopy (∼0′′.15 resolution), and F606W and F140W imaging from the Hubble Space Telescope (∼0′′.2 resolution), we study the star formation activity, stellar and dust mass in these high-redshift galaxies at ∼kpc-scale resolution. We find that ALMA detection rates are higher for more massive galaxies (M* > 1010.5 M⊙) and higher [N II]/H α ratios (>0.25, a proxy for gas-phase metallicity). The dust extends out to a radius of 8 kpc, with a smooth structure, even for those galaxies presenting clumpy H α morphologies. The half-light radii (Rdust) derived for the detected galaxies are of the order ∼4.5 kpc, more than twice the size of submillimetre-selected galaxies at a similar redshift. Our global star formation rate estimates – from far-infrared and extinction-corrected H α luminosities – are in good agreement. However, the different morphologies of the different phases of the interstellar medium suggest complex extinction properties of the high-redshift normal galaxies.",
keywords = "galaxies: ISM, submillimetre: galaxies, galaxies: starburst, galaxies: star formation",
author = "Cheng Cheng and Edo Ibar and Ian Smail and Juan Molina and David Sobral and Andr{\'e}s Escala and Philip Best and Rachel Cochrane and Steven Gillman and Mark Swinbank and Ivison, {R. J.} and Jia-Sheng Huang and Hughes, {Thomas M.} and Eric Villard and Michele Cirasuolo",
note = "This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Cheng Cheng, Edo Ibar, Ian Smail, Juan Molina, David Sobral, Andr{\'e}s Escala, Philip Best, Rachel Cochrane, Steven Gillman, Mark Swinbank, R J Ivison, Jia-Sheng Huang, Thomas M Hughes, Eric Villard, Michele Cirasuolo, A kpc-scale-resolved study of unobscured and obscured star formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS, Monthly Notices of the Royal Astronomical Society, Volume 499, Issue 4, December 2020, Pages 5241–5256 is available online at: https://academic.oup.com/mnras/article-abstract/499/4/5241/5917428",
year = "2020",
month = dec,
day = "1",
doi = "10.1093/mnras/staa3036",
language = "English",
volume = "499",
pages = "5241–5256",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "4",

}

RIS

TY - JOUR

T1 - A kpc-scale resolved study of unobscured and obscured star-formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS

AU - Cheng, Cheng

AU - Ibar, Edo

AU - Smail, Ian

AU - Molina, Juan

AU - Sobral, David

AU - Escala, Andrés

AU - Best, Philip

AU - Cochrane, Rachel

AU - Gillman, Steven

AU - Swinbank, Mark

AU - Ivison, R. J.

AU - Huang, Jia-Sheng

AU - Hughes, Thomas M.

AU - Villard, Eric

AU - Cirasuolo, Michele

N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Cheng Cheng, Edo Ibar, Ian Smail, Juan Molina, David Sobral, Andrés Escala, Philip Best, Rachel Cochrane, Steven Gillman, Mark Swinbank, R J Ivison, Jia-Sheng Huang, Thomas M Hughes, Eric Villard, Michele Cirasuolo, A kpc-scale-resolved study of unobscured and obscured star formation activity in normal galaxies at z = 1.5 and 2.2 from ALMA and HiZELS, Monthly Notices of the Royal Astronomical Society, Volume 499, Issue 4, December 2020, Pages 5241–5256 is available online at: https://academic.oup.com/mnras/article-abstract/499/4/5241/5917428

PY - 2020/12/1

Y1 - 2020/12/1

N2 - We present Atacama Large Millimeter/Submillimeter Array (ALMA) continuum observations of a sample of nine star-forming galaxies at redshifts 1.47 and 2.23 selected from the High-z Emission Line Survey (HiZELS). Four galaxies in our sample are detected at high significance by ALMA at a resolution of 0′′.25 at rest-frame 355 μm. Together with the previously observed H α emission, from adaptive optics-assisted integral-field-unit spectroscopy (∼0′′.15 resolution), and F606W and F140W imaging from the Hubble Space Telescope (∼0′′.2 resolution), we study the star formation activity, stellar and dust mass in these high-redshift galaxies at ∼kpc-scale resolution. We find that ALMA detection rates are higher for more massive galaxies (M* > 1010.5 M⊙) and higher [N II]/H α ratios (>0.25, a proxy for gas-phase metallicity). The dust extends out to a radius of 8 kpc, with a smooth structure, even for those galaxies presenting clumpy H α morphologies. The half-light radii (Rdust) derived for the detected galaxies are of the order ∼4.5 kpc, more than twice the size of submillimetre-selected galaxies at a similar redshift. Our global star formation rate estimates – from far-infrared and extinction-corrected H α luminosities – are in good agreement. However, the different morphologies of the different phases of the interstellar medium suggest complex extinction properties of the high-redshift normal galaxies.

AB - We present Atacama Large Millimeter/Submillimeter Array (ALMA) continuum observations of a sample of nine star-forming galaxies at redshifts 1.47 and 2.23 selected from the High-z Emission Line Survey (HiZELS). Four galaxies in our sample are detected at high significance by ALMA at a resolution of 0′′.25 at rest-frame 355 μm. Together with the previously observed H α emission, from adaptive optics-assisted integral-field-unit spectroscopy (∼0′′.15 resolution), and F606W and F140W imaging from the Hubble Space Telescope (∼0′′.2 resolution), we study the star formation activity, stellar and dust mass in these high-redshift galaxies at ∼kpc-scale resolution. We find that ALMA detection rates are higher for more massive galaxies (M* > 1010.5 M⊙) and higher [N II]/H α ratios (>0.25, a proxy for gas-phase metallicity). The dust extends out to a radius of 8 kpc, with a smooth structure, even for those galaxies presenting clumpy H α morphologies. The half-light radii (Rdust) derived for the detected galaxies are of the order ∼4.5 kpc, more than twice the size of submillimetre-selected galaxies at a similar redshift. Our global star formation rate estimates – from far-infrared and extinction-corrected H α luminosities – are in good agreement. However, the different morphologies of the different phases of the interstellar medium suggest complex extinction properties of the high-redshift normal galaxies.

KW - galaxies: ISM

KW - submillimetre: galaxies

KW - galaxies: starburst

KW - galaxies: star formation

U2 - 10.1093/mnras/staa3036

DO - 10.1093/mnras/staa3036

M3 - Journal article

VL - 499

SP - 5241

EP - 5256

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 4

ER -