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Your search keyword '"Bremer, Malcom N."' showing total 4 results
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4 results on '"Bremer, Malcom N."'

1. Large Synoptic Survey Telescope Galaxies Science Roadmap

Author

Robertson, Brant E., Banerji, Manda, Cooper, Michael C., Davies, Roger, Driver, Simon P., Ferguson, Annette M. N., Ferguson, Henry C., Gawiser, Eric, Kaviraj, Sugata, Knapen, Johan H., Lintott, Chris, Lotz, Jennifer, Newman, Jeffrey A., Norman, Dara J., Padilla, Nelson, Schmidt, Samuel J., Smith, Graham P., Tyson, J. Anthony, Verma, Aprajita, Zehavi, Idit, Armus, Lee, Avestruz, Camille, Barrientos, L. Felipe, Bowler, Rebecca A. A., Bremer, Malcom N., Conselice, Christopher J., Davies, Jonathan, Demarco, Ricardo, Dickinson, Mark E., Galaz, Gaspar, Grazian, Andrea, Holwerda, Benne W., Jarvis, Matt J., Kasliwal, Vishal, Lacerna, Ivan, Loveday, Jon, Marshall, Phil, Merlin, Emiliano, Napolitano, Nicola R., Puzia, Thomas H., Robotham, Aaron, Salim, Samir, Sereno, Mauro, Snyder, Gregory F., Stott, John P., Tissera, Patricia B., Werner, Norbert, Yoachim, Peter, Borne, Kirk D., and Collaboration, Members of the LSST Galaxies Science

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Large Synoptic Survey Telescope (LSST) will enable revolutionary studies of galaxies, dark matter, and black holes over cosmic time. The LSST Galaxies Science Collaboration has identified a host of preparatory research tasks required to leverage fully the LSST dataset for extragalactic science beyond the study of dark energy. This Galaxies Science Roadmap provides a brief introduction to critical extragalactic science to be conducted ahead of LSST operations, and a detailed list of preparatory science tasks including the motivation, activities, and deliverables associated with each. The Galaxies Science Roadmap will serve as a guiding document for researchers interested in conducting extragalactic science in anticipation of the forthcoming LSST era., Comment: For more information, see https://galaxies.science.lsst.org

Published
2017

2. A Study of Central Galaxy Rotation with Stellar Mass and Environment

Author

Oliva-Altamirano, Paola, Brough, Sarah, Tran, Kim-Vy, Jimmy, Miller, Christopher, Bremer, Malcom N., Phillipps, Steven, Sharp, Rob, Colless, Matthew, Lara-Lopez, Maritza A., Lopez-Sanchez, Angel R., Pimbblet, Kevin, Kafle, Prajwal R., and Couch, Warrick J.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present a pilot analysis of the influence of galaxy stellar mass and cluster environment on the probability of slow rotation in 22 central galaxies at mean redshift $z=0.07$. This includes new integral-field observations of 5 central galaxies selected from the Sloan Digital Sky Survey, observed with the SPIRAL integral-field spectrograph on the Anglo-Australian Telescope. The composite sample presented here spans a wide range of stellar masses, $10.9<$log(M$_{*}/$M$_{\odot})<12.0$, and are embedded in halos ranging from groups to clusters, $12.9<$log(M$_{200}/$M$_{\odot})<15.6$. We find a mean probability of slow rotation in our sample of P(SR)$=54\pm7$percent. Our results show an increasing probability of slow rotation in central galaxies with increasing stellar mass. However, when we examine the dependence of slow rotation on host cluster halo mass we do not see a significant relationship. We also explore the influence of cluster dominance on slow rotation in central galaxies. Clusters with low dominance are associated with dynamically younger systems. We find that cluster dominance has no significant effect on the probability of slow rotation in central galaxies. These results conflict with a paradigm in which halo mass alone predetermines central galaxy properties., Comment: Accepted for Publication in the The Astronomical Journal (AJ)

Published
2016
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3. Large Synoptic Survey Telescope Galaxies Science Roadmap

Author

Robertson, Brant E, Banerji, Manda, Cooper, Michael C, Davies, Roger, Driver, Simon P, Ferguson, Annette MN, Ferguson, Henry C, Gawiser, Eric, Kaviraj, Sugata, Knapen, Johan H, Lintott, Chris, Lotz, Jennifer, Newman, Jeffrey A, Norman, Dara J, Padilla, Nelson, Schmidt, Samuel J, Smith, Graham P, Tyson, J Anthony, Verma, Aprajita, Zehavi, Idit, Armus, Lee, Avestruz, Camille, Barrientos, L Felipe, Bowler, Rebecca AA, Bremer, Malcom N, Conselice, Christopher J, Davies, Jonathan, Demarco, Ricardo, Dickinson, Mark E, Galaz, Gaspar, Grazian, Andrea, Holwerda, Benne W, Jarvis, Matt J, Kasliwal, Vishal, Lacerna, Ivan, Loveday, Jon, Marshall, Phil, Merlin, Emiliano, Napolitano, Nicola R, Puzia, Thomas H, Robotham, Aaron, Salim, Samir, Sereno, Mauro, Snyder, Gregory F, Stott, John P, Tissera, Patricia B, Werner, Norbert, Yoachim, Peter, Borne, Kirk D, and Collaboration, Members of the LSST Galaxies Science

Subjects
astro-ph.GA, astro-ph.CO, astro-ph.IM
Abstract

The Large Synoptic Survey Telescope (LSST) will enable revolutionary studiesof galaxies, dark matter, and black holes over cosmic time. The LSST GalaxiesScience Collaboration has identified a host of preparatory research tasksrequired to leverage fully the LSST dataset for extragalactic science beyondthe study of dark energy. This Galaxies Science Roadmap provides a briefintroduction to critical extragalactic science to be conducted ahead of LSSToperations, and a detailed list of preparatory science tasks including themotivation, activities, and deliverables associated with each. The GalaxiesScience Roadmap will serve as a guiding document for researchers interested inconducting extragalactic science in anticipation of the forthcoming LSST era.

Published
2017

4. GAMA/H-ATLAS: A meta-analysis of SFR indicators - comprehensive measures of the SFR-M* relation and cosmic star formation history at z < 0.4

Author

Davies, L.J.M., Driver, Simon P, Robotham, A. S. G., Grootes, M.W., Popescu, Cristina C, Tuffs, Richard J, Hopkins, Andrew M., Alpaslan, M., Andrews, Stephen K, Bland-Hawthorn, Joss, Bremer, Malcom N., Brough, S, Brown, M J I, Cluver, M.E., Croom, S, da Cunha, Elisabete, Davies, L.J.M., Driver, Simon P, Robotham, A. S. G., Grootes, M.W., Popescu, Cristina C, Tuffs, Richard J, Hopkins, Andrew M., Alpaslan, M., Andrews, Stephen K, Bland-Hawthorn, Joss, Bremer, Malcom N., Brough, S, Brown, M J I, Cluver, M.E., Croom, S, and da Cunha, Elisabete

Abstract

We present a meta-analysis of star formation rate (SFR) indicators in the Galaxy And Mass Assembly (GAMA) survey, producing 12 different SFR metrics and determining the SFR–M* relation for each. We compare and contrast published methods to extract the SFR from each indicator, using a well-defined local sample of morphologically selected spiral galaxies, which excludes sources which potentially have large recent changes to their SFR. The different methods are found to yield SFR–M* relations with inconsistent slopes and normalizations, suggesting differences between calibration methods. The recovered SFR–M* relations also have a large range in scatter which, as SFRs of the targets may be considered constant over the different time-scales, suggests differences in the accuracy by which methods correct for attenuation in individual targets. We then recalibrate all SFR indicators to provide new, robust and consistent luminosity-to-SFR calibrations, finding that the most consistent slopes and normalizations of the SFR–M* relations are obtained when recalibrated using the radiation transfer method of Popescu et al. These new calibrations can be used to directly compare SFRs across different observations, epochs and galaxy populations. We then apply our calibrations to the GAMA II equatorial data set and explore the evolution of star formation in the local Universe. We determine the evolution of the normalization to the SFR–M* relation from 0 < z < 0.35 – finding consistent trends with previous estimates at 0.3 < z < 1.2. We then provide the definitive z < 0.35 cosmic star formation history, SFR–M* relation and its evolution over the last 3 billion years

Published
2016

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