Galaxy And Mass Assembly (GAMA): M*-Re relations of z = 0 bulges, discs and spheroids

Rebecca Lange, Amanda J. Moffett, Simon P. Driver, Aaron S.G. Robotham, Claudia Lagos Urbina, L.S. Kelvin, C. Conselice, B. Margalef-Bentabol, M. Alpaslan, I. Baldry, J. Bland-Hawthorn, M. Bremer, S. Brough, M. Cluver, M. Colless, Luke J.M. Davies, B. Häußler, B.W. Holwerda, A.M. Hopkins, Prajwal R. Kafle & 8 others R. Kennedy, J. Liske, S. Phillipps, C.C. Popescu, E.N. Taylor, R. Tuffs, E. van Kampen, Angus H. Wright

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Abstract

© 2016 The Authors.We perform automated bulge + disc decomposition on a sample of ~7500 galaxies from the Galaxy And Mass Assembly (GAMA) survey in the redshift range of 0.002 <z <0.06 using Structural Investigation of Galaxies via Model Analysis, a wrapper around GALFIT3. To achieve robust profile measurements, we use a novel approach of repeatedly fitting the galaxies, varying the input parameters to sample a large fraction of the input parameter space. Using this method, we reduce the catastrophic failure rate significantly and verify the confidence in the fit independently of ?2. Additionally, using the median of the final fitting values and the 16th and 84th percentile produces more realistic error estimates than those provided by GALFIT, which are known to be underestimated. We use the results of our decompositions to analyse the stellar mass - half-light radius relations of bulges, discs and spheroids. We further investigate the association of components with a parent disc or elliptical relation to provide definite z = 0 disc and spheroid M*-Re relations. We conclude by comparing our local disc and spheroid *-Re to simulated data from EAGLE and high-redshift data from Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey-Ultra Deep Survey. We show the potential of using the *-Re relation to study galaxy evolution in both cases but caution that for a fair comparison, all data sets need to be processed and analysed in the same manner.
Original languageEnglish
Pages (from-to)1470-1500
Number of pages31
JournalMonthly Notices of the Royal Astronomical Society
Volume462
Issue number2
DOIs
Publication statusPublished - 21 Oct 2016

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spheroids
assembly
galaxies
decomposition
near infrared
stellar mass
confidence
radii
estimates
profiles
parameter

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Lange, Rebecca ; Moffett, Amanda J. ; Driver, Simon P. ; Robotham, Aaron S.G. ; Lagos Urbina, Claudia ; Kelvin, L.S. ; Conselice, C. ; Margalef-Bentabol, B. ; Alpaslan, M. ; Baldry, I. ; Bland-Hawthorn, J. ; Bremer, M. ; Brough, S. ; Cluver, M. ; Colless, M. ; Davies, Luke J.M. ; Häußler, B. ; Holwerda, B.W. ; Hopkins, A.M. ; Kafle, Prajwal R. ; Kennedy, R. ; Liske, J. ; Phillipps, S. ; Popescu, C.C. ; Taylor, E.N. ; Tuffs, R. ; van Kampen, E. ; Wright, Angus H. / Galaxy And Mass Assembly (GAMA): M*-Re relations of z = 0 bulges, discs and spheroids. In: Monthly Notices of the Royal Astronomical Society. 2016 ; Vol. 462, No. 2. pp. 1470-1500.
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abstract = "{\circledC} 2016 The Authors.We perform automated bulge + disc decomposition on a sample of ~7500 galaxies from the Galaxy And Mass Assembly (GAMA) survey in the redshift range of 0.002 <z <0.06 using Structural Investigation of Galaxies via Model Analysis, a wrapper around GALFIT3. To achieve robust profile measurements, we use a novel approach of repeatedly fitting the galaxies, varying the input parameters to sample a large fraction of the input parameter space. Using this method, we reduce the catastrophic failure rate significantly and verify the confidence in the fit independently of ?2. Additionally, using the median of the final fitting values and the 16th and 84th percentile produces more realistic error estimates than those provided by GALFIT, which are known to be underestimated. We use the results of our decompositions to analyse the stellar mass - half-light radius relations of bulges, discs and spheroids. We further investigate the association of components with a parent disc or elliptical relation to provide definite z = 0 disc and spheroid M*-Re relations. We conclude by comparing our local disc and spheroid *-Re to simulated data from EAGLE and high-redshift data from Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey-Ultra Deep Survey. We show the potential of using the *-Re relation to study galaxy evolution in both cases but caution that for a fair comparison, all data sets need to be processed and analysed in the same manner.",
author = "Rebecca Lange and Moffett, {Amanda J.} and Driver, {Simon P.} and Robotham, {Aaron S.G.} and {Lagos Urbina}, Claudia and L.S. Kelvin and C. Conselice and B. Margalef-Bentabol and M. Alpaslan and I. Baldry and J. Bland-Hawthorn and M. Bremer and S. Brough and M. Cluver and M. Colless and Davies, {Luke J.M.} and B. H{\"a}u{\ss}ler and B.W. Holwerda and A.M. Hopkins and Kafle, {Prajwal R.} and R. Kennedy and J. Liske and S. Phillipps and C.C. Popescu and E.N. Taylor and R. Tuffs and {van Kampen}, E. and Wright, {Angus H.}",
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Lange, R, Moffett, AJ, Driver, SP, Robotham, ASG, Lagos Urbina, C, Kelvin, LS, Conselice, C, Margalef-Bentabol, B, Alpaslan, M, Baldry, I, Bland-Hawthorn, J, Bremer, M, Brough, S, Cluver, M, Colless, M, Davies, LJM, Häußler, B, Holwerda, BW, Hopkins, AM, Kafle, PR, Kennedy, R, Liske, J, Phillipps, S, Popescu, CC, Taylor, EN, Tuffs, R, van Kampen, E & Wright, AH 2016, 'Galaxy And Mass Assembly (GAMA): M*-Re relations of z = 0 bulges, discs and spheroids' Monthly Notices of the Royal Astronomical Society, vol. 462, no. 2, pp. 1470-1500. https://doi.org/10.1093/mnras/stw1495, https://doi.org/10.1093/mnras/stw1495

Galaxy And Mass Assembly (GAMA): M*-Re relations of z = 0 bulges, discs and spheroids. / Lange, Rebecca; Moffett, Amanda J.; Driver, Simon P.; Robotham, Aaron S.G.; Lagos Urbina, Claudia; Kelvin, L.S.; Conselice, C.; Margalef-Bentabol, B.; Alpaslan, M.; Baldry, I.; Bland-Hawthorn, J.; Bremer, M.; Brough, S.; Cluver, M.; Colless, M.; Davies, Luke J.M.; Häußler, B.; Holwerda, B.W.; Hopkins, A.M.; Kafle, Prajwal R.; Kennedy, R.; Liske, J.; Phillipps, S.; Popescu, C.C.; Taylor, E.N.; Tuffs, R.; van Kampen, E.; Wright, Angus H.

In: Monthly Notices of the Royal Astronomical Society, Vol. 462, No. 2, 21.10.2016, p. 1470-1500.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Galaxy And Mass Assembly (GAMA): M*-Re relations of z = 0 bulges, discs and spheroids

AU - Lange, Rebecca

AU - Moffett, Amanda J.

AU - Driver, Simon P.

AU - Robotham, Aaron S.G.

AU - Lagos Urbina, Claudia

AU - Kelvin, L.S.

AU - Conselice, C.

AU - Margalef-Bentabol, B.

AU - Alpaslan, M.

AU - Baldry, I.

AU - Bland-Hawthorn, J.

AU - Bremer, M.

AU - Brough, S.

AU - Cluver, M.

AU - Colless, M.

AU - Davies, Luke J.M.

AU - Häußler, B.

AU - Holwerda, B.W.

AU - Hopkins, A.M.

AU - Kafle, Prajwal R.

AU - Kennedy, R.

AU - Liske, J.

AU - Phillipps, S.

AU - Popescu, C.C.

AU - Taylor, E.N.

AU - Tuffs, R.

AU - van Kampen, E.

AU - Wright, Angus H.

PY - 2016/10/21

Y1 - 2016/10/21

N2 - © 2016 The Authors.We perform automated bulge + disc decomposition on a sample of ~7500 galaxies from the Galaxy And Mass Assembly (GAMA) survey in the redshift range of 0.002 <z <0.06 using Structural Investigation of Galaxies via Model Analysis, a wrapper around GALFIT3. To achieve robust profile measurements, we use a novel approach of repeatedly fitting the galaxies, varying the input parameters to sample a large fraction of the input parameter space. Using this method, we reduce the catastrophic failure rate significantly and verify the confidence in the fit independently of ?2. Additionally, using the median of the final fitting values and the 16th and 84th percentile produces more realistic error estimates than those provided by GALFIT, which are known to be underestimated. We use the results of our decompositions to analyse the stellar mass - half-light radius relations of bulges, discs and spheroids. We further investigate the association of components with a parent disc or elliptical relation to provide definite z = 0 disc and spheroid M*-Re relations. We conclude by comparing our local disc and spheroid *-Re to simulated data from EAGLE and high-redshift data from Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey-Ultra Deep Survey. We show the potential of using the *-Re relation to study galaxy evolution in both cases but caution that for a fair comparison, all data sets need to be processed and analysed in the same manner.

AB - © 2016 The Authors.We perform automated bulge + disc decomposition on a sample of ~7500 galaxies from the Galaxy And Mass Assembly (GAMA) survey in the redshift range of 0.002 <z <0.06 using Structural Investigation of Galaxies via Model Analysis, a wrapper around GALFIT3. To achieve robust profile measurements, we use a novel approach of repeatedly fitting the galaxies, varying the input parameters to sample a large fraction of the input parameter space. Using this method, we reduce the catastrophic failure rate significantly and verify the confidence in the fit independently of ?2. Additionally, using the median of the final fitting values and the 16th and 84th percentile produces more realistic error estimates than those provided by GALFIT, which are known to be underestimated. We use the results of our decompositions to analyse the stellar mass - half-light radius relations of bulges, discs and spheroids. We further investigate the association of components with a parent disc or elliptical relation to provide definite z = 0 disc and spheroid M*-Re relations. We conclude by comparing our local disc and spheroid *-Re to simulated data from EAGLE and high-redshift data from Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey-Ultra Deep Survey. We show the potential of using the *-Re relation to study galaxy evolution in both cases but caution that for a fair comparison, all data sets need to be processed and analysed in the same manner.

U2 - 10.1093/mnras/stw1495

DO - 10.1093/mnras/stw1495

M3 - Article

VL - 462

SP - 1470

EP - 1500

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -