University of Hertfordshire

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From the same journal

By the same authors

The origin of low-surface-brightness galaxies in the dwarf regime

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The origin of low-surface-brightness galaxies in the dwarf regime. / Jackson, R. A.; Martin, G.; Kaviraj, S.; Ramsøy, M.; Devriendt, J. E. G.; Sedgwick, T.; Laigle, C.; Choi, H.; Beckmann, R. S.; Volonteri, M.; Dubois, Y.; Pichon, C.; Yi, S. K.; Slyz, A.; Kraljic, K.; Kimm, T.; Peirani, S.; Baldry, I.

In: Monthly Notices of the Royal Astronomical Society, 13.01.2021.

Research output: Contribution to journalArticlepeer-review

Harvard

Jackson, RA, Martin, G, Kaviraj, S, Ramsøy, M, Devriendt, JEG, Sedgwick, T, Laigle, C, Choi, H, Beckmann, RS, Volonteri, M, Dubois, Y, Pichon, C, Yi, SK, Slyz, A, Kraljic, K, Kimm, T, Peirani, S & Baldry, I 2021, 'The origin of low-surface-brightness galaxies in the dwarf regime', Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnras/stab077

APA

Jackson, R. A., Martin, G., Kaviraj, S., Ramsøy, M., Devriendt, J. E. G., Sedgwick, T., Laigle, C., Choi, H., Beckmann, R. S., Volonteri, M., Dubois, Y., Pichon, C., Yi, S. K., Slyz, A., Kraljic, K., Kimm, T., Peirani, S., & Baldry, I. (2021). The origin of low-surface-brightness galaxies in the dwarf regime. Monthly Notices of the Royal Astronomical Society, [stab077]. https://doi.org/10.1093/mnras/stab077

Vancouver

Author

Jackson, R. A. ; Martin, G. ; Kaviraj, S. ; Ramsøy, M. ; Devriendt, J. E. G. ; Sedgwick, T. ; Laigle, C. ; Choi, H. ; Beckmann, R. S. ; Volonteri, M. ; Dubois, Y. ; Pichon, C. ; Yi, S. K. ; Slyz, A. ; Kraljic, K. ; Kimm, T. ; Peirani, S. ; Baldry, I. / The origin of low-surface-brightness galaxies in the dwarf regime. In: Monthly Notices of the Royal Astronomical Society. 2021.

Bibtex

@article{9b10ecd0f3974ed4899922c490bddaa5,
title = "The origin of low-surface-brightness galaxies in the dwarf regime",
abstract = "Low-surface-brightness galaxies (LSBGs) -- defined as systems that are fainter than the surface-brightness limits of past wide-area surveys -- form the overwhelming majority of galaxies in the dwarf regime (M* < 10^9 MSun). Using NewHorizon, a high-resolution cosmological simulation, we study the origin of LSBGs and explain why LSBGs at similar stellar mass show the large observed spread in surface brightness. New Horizon galaxies populate a well-defined locus in the surface brightness -- stellar mass plane, with a spread of ~3 mag arcsec^-2, in agreement with deep SDSS Stripe data. Galaxies with fainter surface brightnesses today are born in regions of higher dark-matter density. This results in faster gas accretion and more intense star formation at early epochs. The stronger resultant supernova feedback flattens gas profiles at a faster rate which, in turn, creates shallower stellar profiles (i.e. more diffuse systems) more rapidly. As star formation declines towards late epochs (z<1), the larger tidal perturbations and ram pressure experienced by these systems (due to their denser local environments) accelerate the divergence in surface brightness, by increasing their effective radii and reducing star formation respectively. A small minority of dwarfs depart from the main locus towards high surface brightnesses, making them detectable in past wide surveys. These systems have anomalously high star-formation rates, triggered by recent, fly-by or merger-driven starbursts. We note that objects considered extreme/anomalous at the depth of current datasets, e.g. `ultra-diffuse galaxies', actually dominate the predicted dwarf population and will be routinely visible in future surveys like LSST.",
keywords = "astro-ph.GA",
author = "Jackson, {R. A.} and G. Martin and S. Kaviraj and M. Rams{\o}y and Devriendt, {J. E. G.} and T. Sedgwick and C. Laigle and H. Choi and Beckmann, {R. S.} and M. Volonteri and Y. Dubois and C. Pichon and Yi, {S. K.} and A. Slyz and K. Kraljic and T. Kimm and S. Peirani and I. Baldry",
note = "Copyright 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.",
year = "2021",
month = jan,
day = "13",
doi = "10.1093/mnras/stab077",
language = "English",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",

}

RIS

TY - JOUR

T1 - The origin of low-surface-brightness galaxies in the dwarf regime

AU - Jackson, R. A.

AU - Martin, G.

AU - Kaviraj, S.

AU - Ramsøy, M.

AU - Devriendt, J. E. G.

AU - Sedgwick, T.

AU - Laigle, C.

AU - Choi, H.

AU - Beckmann, R. S.

AU - Volonteri, M.

AU - Dubois, Y.

AU - Pichon, C.

AU - Yi, S. K.

AU - Slyz, A.

AU - Kraljic, K.

AU - Kimm, T.

AU - Peirani, S.

AU - Baldry, I.

N1 - Copyright 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

PY - 2021/1/13

Y1 - 2021/1/13

N2 - Low-surface-brightness galaxies (LSBGs) -- defined as systems that are fainter than the surface-brightness limits of past wide-area surveys -- form the overwhelming majority of galaxies in the dwarf regime (M* < 10^9 MSun). Using NewHorizon, a high-resolution cosmological simulation, we study the origin of LSBGs and explain why LSBGs at similar stellar mass show the large observed spread in surface brightness. New Horizon galaxies populate a well-defined locus in the surface brightness -- stellar mass plane, with a spread of ~3 mag arcsec^-2, in agreement with deep SDSS Stripe data. Galaxies with fainter surface brightnesses today are born in regions of higher dark-matter density. This results in faster gas accretion and more intense star formation at early epochs. The stronger resultant supernova feedback flattens gas profiles at a faster rate which, in turn, creates shallower stellar profiles (i.e. more diffuse systems) more rapidly. As star formation declines towards late epochs (z<1), the larger tidal perturbations and ram pressure experienced by these systems (due to their denser local environments) accelerate the divergence in surface brightness, by increasing their effective radii and reducing star formation respectively. A small minority of dwarfs depart from the main locus towards high surface brightnesses, making them detectable in past wide surveys. These systems have anomalously high star-formation rates, triggered by recent, fly-by or merger-driven starbursts. We note that objects considered extreme/anomalous at the depth of current datasets, e.g. `ultra-diffuse galaxies', actually dominate the predicted dwarf population and will be routinely visible in future surveys like LSST.

AB - Low-surface-brightness galaxies (LSBGs) -- defined as systems that are fainter than the surface-brightness limits of past wide-area surveys -- form the overwhelming majority of galaxies in the dwarf regime (M* < 10^9 MSun). Using NewHorizon, a high-resolution cosmological simulation, we study the origin of LSBGs and explain why LSBGs at similar stellar mass show the large observed spread in surface brightness. New Horizon galaxies populate a well-defined locus in the surface brightness -- stellar mass plane, with a spread of ~3 mag arcsec^-2, in agreement with deep SDSS Stripe data. Galaxies with fainter surface brightnesses today are born in regions of higher dark-matter density. This results in faster gas accretion and more intense star formation at early epochs. The stronger resultant supernova feedback flattens gas profiles at a faster rate which, in turn, creates shallower stellar profiles (i.e. more diffuse systems) more rapidly. As star formation declines towards late epochs (z<1), the larger tidal perturbations and ram pressure experienced by these systems (due to their denser local environments) accelerate the divergence in surface brightness, by increasing their effective radii and reducing star formation respectively. A small minority of dwarfs depart from the main locus towards high surface brightnesses, making them detectable in past wide surveys. These systems have anomalously high star-formation rates, triggered by recent, fly-by or merger-driven starbursts. We note that objects considered extreme/anomalous at the depth of current datasets, e.g. `ultra-diffuse galaxies', actually dominate the predicted dwarf population and will be routinely visible in future surveys like LSST.

KW - astro-ph.GA

U2 - 10.1093/mnras/stab077

DO - 10.1093/mnras/stab077

M3 - Article

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

M1 - stab077

ER -