The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters
Using new integral field observations of 106 galaxies in three nearby clusters, we investigate how the intrinsic scatter of the Fundamental Plane depends on the way in which the velocity dispersion and effective radius are measured. Our spatially resolved spectroscopy, combined with a cluster sample...
Published in: | Monthly Notices of the Royal Astronomical Society |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Oxford University Press
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/1959.3/408305 https://doi.org/10.1093/mnras/stv1127 |
id |
ftswinburne:tle:1860b444-46f7-4155-8b7c-860a616ed82d:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 |
---|---|
record_format |
openpolar |
spelling |
ftswinburne:tle:1860b444-46f7-4155-8b7c-860a616ed82d:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 2023-05-15T18:12:07+02:00 The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters Scott, Nicholas Fogarty, L. M. R. Owers, Matt S. Croom, Scott M. Colless, Matthew Davies, Roger L. Brough, S. Pracy, Michael, B. Bland-Hawthorn, Joss Heath Jones, D. Allen, J. T. Bryant, Julia J. Cortese, Luca Goodwin, Michael Green, Andrew W. Konstantopoulos, Iraklis S. Lawrence, J. S. Richards, Samuel Sharp, Rob Swinburne University of Technology 2015 http://hdl.handle.net/1959.3/408305 https://doi.org/10.1093/mnras/stv1127 unknown Oxford University Press http://purl.org/au-research/grants/arc/CE110001020 http://hdl.handle.net/1959.3/408305 https://doi.org/10.1093/mnras/stv1127 This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Monthly Notices of the Royal Astronomical Society, Vol. 451, no. 3 (2015), pp. 2723-2734 Journal article 2015 ftswinburne https://doi.org/10.1093/mnras/stv1127 2019-09-07T21:34:31Z Using new integral field observations of 106 galaxies in three nearby clusters, we investigate how the intrinsic scatter of the Fundamental Plane depends on the way in which the velocity dispersion and effective radius are measured. Our spatially resolved spectroscopy, combined with a cluster sample with negligible relative distance errors, allows us to derive a Fundamental Plane with minimal systematic uncertainties. From the apertures we tested, we find that velocity dispersions measured within a circular aperture with radius equal to one effective radius minimizes the intrinsic scatter of the Fundamental Plane. Using simple yet powerful Jeans dynamical models, we determine dynamical masses for our galaxies. Replacing luminosity in the Fundamental Plane with dynamical mass, we demonstrate that the resulting Mass Plane has further reduced scatter, consistent with zero intrinsic scatter. Using these dynamical models, we also find evidence for a possibly non-linear relationship between dynamical mass-to-light ratio and velocity dispersion. Article in Journal/Newspaper sami Swinburne University of Technology: Swinburne Research Bank Monthly Notices of the Royal Astronomical Society 451 3 2723 2734 |
institution |
Open Polar |
collection |
Swinburne University of Technology: Swinburne Research Bank |
op_collection_id |
ftswinburne |
language |
unknown |
description |
Using new integral field observations of 106 galaxies in three nearby clusters, we investigate how the intrinsic scatter of the Fundamental Plane depends on the way in which the velocity dispersion and effective radius are measured. Our spatially resolved spectroscopy, combined with a cluster sample with negligible relative distance errors, allows us to derive a Fundamental Plane with minimal systematic uncertainties. From the apertures we tested, we find that velocity dispersions measured within a circular aperture with radius equal to one effective radius minimizes the intrinsic scatter of the Fundamental Plane. Using simple yet powerful Jeans dynamical models, we determine dynamical masses for our galaxies. Replacing luminosity in the Fundamental Plane with dynamical mass, we demonstrate that the resulting Mass Plane has further reduced scatter, consistent with zero intrinsic scatter. Using these dynamical models, we also find evidence for a possibly non-linear relationship between dynamical mass-to-light ratio and velocity dispersion. |
author2 |
Swinburne University of Technology |
format |
Article in Journal/Newspaper |
author |
Scott, Nicholas Fogarty, L. M. R. Owers, Matt S. Croom, Scott M. Colless, Matthew Davies, Roger L. Brough, S. Pracy, Michael, B. Bland-Hawthorn, Joss Heath Jones, D. Allen, J. T. Bryant, Julia J. Cortese, Luca Goodwin, Michael Green, Andrew W. Konstantopoulos, Iraklis S. Lawrence, J. S. Richards, Samuel Sharp, Rob |
spellingShingle |
Scott, Nicholas Fogarty, L. M. R. Owers, Matt S. Croom, Scott M. Colless, Matthew Davies, Roger L. Brough, S. Pracy, Michael, B. Bland-Hawthorn, Joss Heath Jones, D. Allen, J. T. Bryant, Julia J. Cortese, Luca Goodwin, Michael Green, Andrew W. Konstantopoulos, Iraklis S. Lawrence, J. S. Richards, Samuel Sharp, Rob The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters |
author_facet |
Scott, Nicholas Fogarty, L. M. R. Owers, Matt S. Croom, Scott M. Colless, Matthew Davies, Roger L. Brough, S. Pracy, Michael, B. Bland-Hawthorn, Joss Heath Jones, D. Allen, J. T. Bryant, Julia J. Cortese, Luca Goodwin, Michael Green, Andrew W. Konstantopoulos, Iraklis S. Lawrence, J. S. Richards, Samuel Sharp, Rob |
author_sort |
Scott, Nicholas |
title |
The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters |
title_short |
The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters |
title_full |
The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters |
title_fullStr |
The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters |
title_full_unstemmed |
The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters |
title_sort |
sami pilot survey: the fundamental and mass planes in three low-redshift clusters |
publisher |
Oxford University Press |
publishDate |
2015 |
url |
http://hdl.handle.net/1959.3/408305 https://doi.org/10.1093/mnras/stv1127 |
genre |
sami |
genre_facet |
sami |
op_source |
Monthly Notices of the Royal Astronomical Society, Vol. 451, no. 3 (2015), pp. 2723-2734 |
op_relation |
http://purl.org/au-research/grants/arc/CE110001020 http://hdl.handle.net/1959.3/408305 https://doi.org/10.1093/mnras/stv1127 |
op_rights |
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
op_doi |
https://doi.org/10.1093/mnras/stv1127 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
451 |
container_issue |
3 |
container_start_page |
2723 |
op_container_end_page |
2734 |
_version_ |
1766184678366117888 |