Galaxy and Mass Assembly (GAMA): the red fraction and radial distribution of satellite galaxies

Matthew Prescott; I. K. Baldry; P. A. James; S. P. Bamford; J. Bland-Hawthorn; S. Brough; M. J. I. Brown; E. Cameron; C. J. Conselice; S. M. Croom; S. P. Driver; C. S. Frenk; M. Gunawardhana; D. T. Hill; A. M. Hopkins; D. H. Jones; L. S. Kelvin; K. Kuijken; J. Liske; J. Loveday; R. C. Nichol; P. Norberg; H. R. Parkinson; J. A. Peacock; S. Phillipps; K. A. Pimbblet; C. C. Popescu; A. S. G. Robotham; R. G. Sharp; W. J. Sutherland; E. N. Taylor; R. J. Tuffs; E. van Kampen; D. Wijesinghe

doi:10.1111/j.1365-2966.2011.19353.x

Galaxy and Mass Assembly (GAMA): the red fraction and radial distribution of satellite galaxies

Matthew Prescott, I. K. Baldry, P. A. James, S. P. Bamford, J. Bland-Hawthorn, S. Brough, M. J. I. Brown, E. Cameron, C. J. Conselice, S. M. Croom, S. P. Driver, C. S. Frenk, M. Gunawardhana, D. T. Hill, A. M. Hopkins, D. H. Jones, L. S. Kelvin, K. Kuijken, J. Liske, J. LovedayR. C. Nichol, P. Norberg, H. R. Parkinson, J. A. Peacock, S. Phillipps, K. A. Pimbblet, C. C. Popescu, A. S. G. Robotham, R. G. Sharp, W. J. Sutherland, E. N. Taylor, R. J. Tuffs, E. van Kampen, D. Wijesinghe

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the properties of satellite galaxies that surroundisolated hosts within the redshift range 0.01 <z <0.15, usingdata taken as part of the Galaxy And Mass Assembly survey. Making use ofisolation and satellite criteria that take into account stellar massestimates, we find 3514 isolated galaxies of which 1426 host a total of2998 satellites. Separating the red and blue populations of satellitesand hosts, using colour-mass diagrams, we investigate the radialdistribution of satellite galaxies and determine how the red fraction ofsatellites varies as a function of satellite mass, host mass and theprojected distance from their host. Comparing the red fraction ofsatellites to a control sample of small neighbours at greater projectedradii, we show that the increase in red fraction is primarily a functionof host mass. The satellite red fraction is about 0.2 higher than thecontrol sample for hosts with ?, while the red fractions show nodifference for hosts with ?. For the satellites of more massive hosts,the red fraction also increases as a function of decreasing projecteddistance. Our results suggest that the likely main mechanism for thequenching of star formation in satellites hosted by isolated galaxies is strangulation.

Original language	English
Pages (from-to)	1374-1386
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	417
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2966.2011.19353.x
Publication status	Published - 21 Oct 2011

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Prescott, M., Baldry, I. K., James, P. A., Bamford, S. P., Bland-Hawthorn, J., Brough, S., Brown, M. J. I., Cameron, E., Conselice, C. J., Croom, S. M., Driver, S. P., Frenk, C. S., Gunawardhana, M., Hill, D. T., Hopkins, A. M., Jones, D. H., Kelvin, L. S., Kuijken, K., Liske, J., ... Wijesinghe, D. (2011). Galaxy and Mass Assembly (GAMA): the red fraction and radial distribution of satellite galaxies. Monthly Notices of the Royal Astronomical Society, 417(2), 1374-1386. https://doi.org/10.1111/j.1365-2966.2011.19353.x

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title = "Galaxy and Mass Assembly (GAMA): the red fraction and radial distribution of satellite galaxies",

abstract = "We investigate the properties of satellite galaxies that surroundisolated hosts within the redshift range 0.01 <z <0.15, usingdata taken as part of the Galaxy And Mass Assembly survey. Making use ofisolation and satellite criteria that take into account stellar massestimates, we find 3514 isolated galaxies of which 1426 host a total of2998 satellites. Separating the red and blue populations of satellitesand hosts, using colour-mass diagrams, we investigate the radialdistribution of satellite galaxies and determine how the red fraction ofsatellites varies as a function of satellite mass, host mass and theprojected distance from their host. Comparing the red fraction ofsatellites to a control sample of small neighbours at greater projectedradii, we show that the increase in red fraction is primarily a functionof host mass. The satellite red fraction is about 0.2 higher than thecontrol sample for hosts with ?, while the red fractions show nodifference for hosts with ?. For the satellites of more massive hosts,the red fraction also increases as a function of decreasing projecteddistance. Our results suggest that the likely main mechanism for thequenching of star formation in satellites hosted by isolated galaxies is strangulation.",

author = "Matthew Prescott and Baldry, {I. K.} and James, {P. A.} and Bamford, {S. P.} and J. Bland-Hawthorn and S. Brough and Brown, {M. J. I.} and E. Cameron and Conselice, {C. J.} and Croom, {S. M.} and Driver, {S. P.} and Frenk, {C. S.} and M. Gunawardhana and Hill, {D. T.} and Hopkins, {A. M.} and Jones, {D. H.} and Kelvin, {L. S.} and K. Kuijken and J. Liske and J. Loveday and Nichol, {R. C.} and P. Norberg and Parkinson, {H. R.} and Peacock, {J. A.} and S. Phillipps and Pimbblet, {K. A.} and Popescu, {C. C.} and Robotham, {A. S. G.} and Sharp, {R. G.} and Sutherland, {W. J.} and Taylor, {E. N.} and Tuffs, {R. J.} and {van Kampen}, E. and D. Wijesinghe",

year = "2011",

month = oct,

day = "21",

doi = "10.1111/j.1365-2966.2011.19353.x",

language = "English",

volume = "417",

pages = "1374--1386",

journal = "Monthly Notices of the Royal Astronomical Society ",

issn = "0035-8711",

publisher = "Oxford University Press",

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Prescott, M, Baldry, IK, James, PA, Bamford, SP, Bland-Hawthorn, J, Brough, S, Brown, MJI, Cameron, E, Conselice, CJ, Croom, SM, Driver, SP, Frenk, CS, Gunawardhana, M, Hill, DT, Hopkins, AM, Jones, DH, Kelvin, LS, Kuijken, K, Liske, J, Loveday, J, Nichol, RC, Norberg, P, Parkinson, HR, Peacock, JA, Phillipps, S, Pimbblet, KA, Popescu, CC, Robotham, ASG, Sharp, RG, Sutherland, WJ, Taylor, EN, Tuffs, RJ, van Kampen, E & Wijesinghe, D 2011, 'Galaxy and Mass Assembly (GAMA): the red fraction and radial distribution of satellite galaxies', Monthly Notices of the Royal Astronomical Society, vol. 417, no. 2, pp. 1374-1386. https://doi.org/10.1111/j.1365-2966.2011.19353.x

TY - JOUR

T1 - Galaxy and Mass Assembly (GAMA)

T2 - the red fraction and radial distribution of satellite galaxies

AU - Prescott, Matthew

AU - Baldry, I. K.

AU - James, P. A.

AU - Bamford, S. P.

AU - Bland-Hawthorn, J.

AU - Brough, S.

AU - Brown, M. J. I.

AU - Cameron, E.

AU - Conselice, C. J.

AU - Croom, S. M.

AU - Driver, S. P.

AU - Frenk, C. S.

AU - Gunawardhana, M.

AU - Hill, D. T.

AU - Hopkins, A. M.

AU - Jones, D. H.

AU - Kelvin, L. S.

AU - Kuijken, K.

AU - Liske, J.

AU - Loveday, J.

AU - Nichol, R. C.

AU - Norberg, P.

AU - Parkinson, H. R.

AU - Peacock, J. A.

AU - Phillipps, S.

AU - Pimbblet, K. A.

AU - Popescu, C. C.

AU - Robotham, A. S. G.

AU - Sharp, R. G.

AU - Sutherland, W. J.

AU - Taylor, E. N.

AU - Tuffs, R. J.

AU - van Kampen, E.

AU - Wijesinghe, D.

PY - 2011/10/21

Y1 - 2011/10/21

N2 - We investigate the properties of satellite galaxies that surroundisolated hosts within the redshift range 0.01 <z <0.15, usingdata taken as part of the Galaxy And Mass Assembly survey. Making use ofisolation and satellite criteria that take into account stellar massestimates, we find 3514 isolated galaxies of which 1426 host a total of2998 satellites. Separating the red and blue populations of satellitesand hosts, using colour-mass diagrams, we investigate the radialdistribution of satellite galaxies and determine how the red fraction ofsatellites varies as a function of satellite mass, host mass and theprojected distance from their host. Comparing the red fraction ofsatellites to a control sample of small neighbours at greater projectedradii, we show that the increase in red fraction is primarily a functionof host mass. The satellite red fraction is about 0.2 higher than thecontrol sample for hosts with ?, while the red fractions show nodifference for hosts with ?. For the satellites of more massive hosts,the red fraction also increases as a function of decreasing projecteddistance. Our results suggest that the likely main mechanism for thequenching of star formation in satellites hosted by isolated galaxies is strangulation.

AB - We investigate the properties of satellite galaxies that surroundisolated hosts within the redshift range 0.01 <z <0.15, usingdata taken as part of the Galaxy And Mass Assembly survey. Making use ofisolation and satellite criteria that take into account stellar massestimates, we find 3514 isolated galaxies of which 1426 host a total of2998 satellites. Separating the red and blue populations of satellitesand hosts, using colour-mass diagrams, we investigate the radialdistribution of satellite galaxies and determine how the red fraction ofsatellites varies as a function of satellite mass, host mass and theprojected distance from their host. Comparing the red fraction ofsatellites to a control sample of small neighbours at greater projectedradii, we show that the increase in red fraction is primarily a functionof host mass. The satellite red fraction is about 0.2 higher than thecontrol sample for hosts with ?, while the red fractions show nodifference for hosts with ?. For the satellites of more massive hosts,the red fraction also increases as a function of decreasing projecteddistance. Our results suggest that the likely main mechanism for thequenching of star formation in satellites hosted by isolated galaxies is strangulation.

U2 - 10.1111/j.1365-2966.2011.19353.x

DO - 10.1111/j.1365-2966.2011.19353.x

M3 - Article

VL - 417

SP - 1374

EP - 1386

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -

Galaxy and Mass Assembly (GAMA): the red fraction and radial distribution of satellite galaxies

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