Low surface brightness galaxies in z > 1 galaxy clusters: HST approaching the progenitors of local ultra diffuse galaxies

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Standard

Low surface brightness galaxies in z > 1 galaxy clusters : HST approaching the progenitors of local ultra diffuse galaxies. / Bachmann, Aisha; van der Burg, Remco F. J.; Fensch, Jeremy; Brammer, Gabriel; Muzzin, Adam.

I: Astronomy & Astrophysics, Bind 646, L12, 16.02.2021.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Harvard

Bachmann, A, van der Burg, RFJ, Fensch, J, Brammer, G & Muzzin, A 2021, 'Low surface brightness galaxies in z > 1 galaxy clusters: HST approaching the progenitors of local ultra diffuse galaxies', Astronomy & Astrophysics, bind 646, L12. https://doi.org/10.1051/0004-6361/202040097

APA

Bachmann, A., van der Burg, R. F. J., Fensch, J., Brammer, G., & Muzzin, A. (2021). Low surface brightness galaxies in z > 1 galaxy clusters: HST approaching the progenitors of local ultra diffuse galaxies. Astronomy & Astrophysics, 646, [L12]. https://doi.org/10.1051/0004-6361/202040097

Vancouver

Bachmann A, van der Burg RFJ, Fensch J, Brammer G, Muzzin A. Low surface brightness galaxies in z > 1 galaxy clusters: HST approaching the progenitors of local ultra diffuse galaxies. Astronomy & Astrophysics. 2021 feb. 16;646. L12. https://doi.org/10.1051/0004-6361/202040097

Author

Bachmann, Aisha ; van der Burg, Remco F. J. ; Fensch, Jeremy ; Brammer, Gabriel ; Muzzin, Adam. / Low surface brightness galaxies in z > 1 galaxy clusters : HST approaching the progenitors of local ultra diffuse galaxies. I: Astronomy & Astrophysics. 2021 ; Bind 646.

Bibtex

@article{5c72c69a05b445fcb16d27becfd5eb40,
title = "Low surface brightness galaxies in z > 1 galaxy clusters: HST approaching the progenitors of local ultra diffuse galaxies",
abstract = "Ultra diffuse galaxies (UDGs) are a type of large low surface brightness (LSB) galaxies with particularly large effective radii (r(eff)> 1.5 kpc) that are now routinely studied in the Local (z<0.1) Universe. While they are found to be abundant in clusters, groups, and in the field, their formation mechanisms remain elusive and comprise an active topic of debate. New insights may be found by studying their counterparts at higher redshifts (z> 1.0), even though cosmological surface brightness dimming makes them particularly difficult to detect and study in this channel. In this work, we use the deepest Hubble Space Telescope (HST) imaging stacks of z> 1 clusters, namely, SPT-CL J2106-5844 and MOO J1014+0038. These two clusters, at z=1.13 and z=1.23, respectively, were monitored as part of the HST See-Change programme. In making a comparison with the Hubble Extreme Deep Field as the reference field, we find statistical over-densities of large LSB galaxies in both clusters. Based on stellar-population modelling and assuming no size evolution, we find that the faintest sources we can detect are about as bright as expected for the progenitors of the brightest local UDGs. We find that the LSBs we detect in SPT-CL J2106-5844 and MOO J1014-5844 already have old stellar populations that place them on the red sequence. In correcting for incompleteness and based on an extrapolation of local scaling relations, we estimate that distant UDGs are relatively under-abundant, as compared to local UDGs, by a factor similar to 3. A plausible explanation for the implied increase over time would be the significant growth of these galaxies over the last similar to 8 Gyr, as also suggested by hydrodynamical simulations.",
keywords = "galaxies: dwarf, galaxies: formation, galaxies: clusters: general",
author = "Aisha Bachmann and {van der Burg}, {Remco F. J.} and Jeremy Fensch and Gabriel Brammer and Adam Muzzin",
year = "2021",
month = feb,
day = "16",
doi = "10.1051/0004-6361/202040097",
language = "English",
volume = "646",
journal = "Astronomy and Astrophysics Supplement Series",
issn = "0004-6361",
publisher = "E D P Sciences",

}

RIS

TY - JOUR

T1 - Low surface brightness galaxies in z > 1 galaxy clusters

T2 - HST approaching the progenitors of local ultra diffuse galaxies

AU - Bachmann, Aisha

AU - van der Burg, Remco F. J.

AU - Fensch, Jeremy

AU - Brammer, Gabriel

AU - Muzzin, Adam

PY - 2021/2/16

Y1 - 2021/2/16

N2 - Ultra diffuse galaxies (UDGs) are a type of large low surface brightness (LSB) galaxies with particularly large effective radii (r(eff)> 1.5 kpc) that are now routinely studied in the Local (z<0.1) Universe. While they are found to be abundant in clusters, groups, and in the field, their formation mechanisms remain elusive and comprise an active topic of debate. New insights may be found by studying their counterparts at higher redshifts (z> 1.0), even though cosmological surface brightness dimming makes them particularly difficult to detect and study in this channel. In this work, we use the deepest Hubble Space Telescope (HST) imaging stacks of z> 1 clusters, namely, SPT-CL J2106-5844 and MOO J1014+0038. These two clusters, at z=1.13 and z=1.23, respectively, were monitored as part of the HST See-Change programme. In making a comparison with the Hubble Extreme Deep Field as the reference field, we find statistical over-densities of large LSB galaxies in both clusters. Based on stellar-population modelling and assuming no size evolution, we find that the faintest sources we can detect are about as bright as expected for the progenitors of the brightest local UDGs. We find that the LSBs we detect in SPT-CL J2106-5844 and MOO J1014-5844 already have old stellar populations that place them on the red sequence. In correcting for incompleteness and based on an extrapolation of local scaling relations, we estimate that distant UDGs are relatively under-abundant, as compared to local UDGs, by a factor similar to 3. A plausible explanation for the implied increase over time would be the significant growth of these galaxies over the last similar to 8 Gyr, as also suggested by hydrodynamical simulations.

AB - Ultra diffuse galaxies (UDGs) are a type of large low surface brightness (LSB) galaxies with particularly large effective radii (r(eff)> 1.5 kpc) that are now routinely studied in the Local (z<0.1) Universe. While they are found to be abundant in clusters, groups, and in the field, their formation mechanisms remain elusive and comprise an active topic of debate. New insights may be found by studying their counterparts at higher redshifts (z> 1.0), even though cosmological surface brightness dimming makes them particularly difficult to detect and study in this channel. In this work, we use the deepest Hubble Space Telescope (HST) imaging stacks of z> 1 clusters, namely, SPT-CL J2106-5844 and MOO J1014+0038. These two clusters, at z=1.13 and z=1.23, respectively, were monitored as part of the HST See-Change programme. In making a comparison with the Hubble Extreme Deep Field as the reference field, we find statistical over-densities of large LSB galaxies in both clusters. Based on stellar-population modelling and assuming no size evolution, we find that the faintest sources we can detect are about as bright as expected for the progenitors of the brightest local UDGs. We find that the LSBs we detect in SPT-CL J2106-5844 and MOO J1014-5844 already have old stellar populations that place them on the red sequence. In correcting for incompleteness and based on an extrapolation of local scaling relations, we estimate that distant UDGs are relatively under-abundant, as compared to local UDGs, by a factor similar to 3. A plausible explanation for the implied increase over time would be the significant growth of these galaxies over the last similar to 8 Gyr, as also suggested by hydrodynamical simulations.

KW - galaxies: dwarf

KW - galaxies: formation

KW - galaxies: clusters: general

U2 - 10.1051/0004-6361/202040097

DO - 10.1051/0004-6361/202040097

M3 - Journal article

VL - 646

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

SN - 0004-6361

M1 - L12

ER -

ID: 258375457