Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii

Robert N. Proctor; Duncan A. Forbes; Aaron J. Romanowsky; Jean P. Brodie; Jay Strader; Max Spolaor; J. Trevor Mendel; Lee Spitler

doi:10.1063/1.3458528

Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii

Robert N. Proctor, Duncan A. Forbes, Aaron J. Romanowsky, Jean P. Brodie, Jay Strader, Max Spolaor, J. Trevor Mendel, Lee Spitler

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

We detail an innovative new technique for measuring the 2-D velocity moments (rotation velocity, velocity dispersion and Gauss-Hermite coefficients h₃ and h₄) using spectra from Keck DEIMOS multi-object spectroscopic observations. The data are used to reconstruct 2-D rotation velocity maps. Here we present data for one of five early-type galaxies whose kinematics we have measured out to ∼3 effective radii (see [1]). From these data 2D kinematic maps are constructed. We show such analyses can provide significant insights into the global kinematic structure of galaxies, and, in some cases, challenge the accepted morphological classification. Our results are of particular importance to studies which attempt to classify galaxies by their kinematic structure within one effective radius, such as the recent definition of fast- and slow- rotator classes by the SAURON project.

Original language	English
Title of host publication	Hunting for the Dark: The Hidden Side of Galaxy Formation - Proceedings of the International Conference
Editors	Victor P. Debattista, Cristina C. Popescu
Place of Publication	College Park, Maryland
Publisher	American Institute of Physics
Pages	339-342
Number of pages	4
Volume	1240
ISBN (Print)	9780735407862
DOIs	https://doi.org/10.1063/1.3458528
Publication status	Published - 2010
Externally published	Yes
Event	International Conference "Hunting for the Dark: The Hidden Side of Galaxy Formation" - Qawra, Malta Duration: 19 Oct 2009 → 23 Oct 2009

Other

Other	International Conference "Hunting for the Dark: The Hidden Side of Galaxy Formation"
Country/Territory	Malta
City	Qawra
Period	19/10/09 → 23/10/09

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10.1063/1.3458528

Cite this

Proctor, R. N., Forbes, D. A., Romanowsky, A. J., Brodie, J. P., Strader, J., Spolaor, M., Trevor Mendel, J., & Spitler, L. (2010). Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii. In V. P. Debattista, & C. C. Popescu (Eds.), Hunting for the Dark: The Hidden Side of Galaxy Formation - Proceedings of the International Conference (Vol. 1240, pp. 339-342). American Institute of Physics. https://doi.org/10.1063/1.3458528

Proctor, Robert N. ; Forbes, Duncan A. ; Romanowsky, Aaron J. et al. / Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii. Hunting for the Dark: The Hidden Side of Galaxy Formation - Proceedings of the International Conference. editor / Victor P. Debattista ; Cristina C. Popescu. Vol. 1240 College Park, Maryland : American Institute of Physics, 2010. pp. 339-342

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title = "Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii",

abstract = "We detail an innovative new technique for measuring the 2-D velocity moments (rotation velocity, velocity dispersion and Gauss-Hermite coefficients h3 and h4) using spectra from Keck DEIMOS multi-object spectroscopic observations. The data are used to reconstruct 2-D rotation velocity maps. Here we present data for one of five early-type galaxies whose kinematics we have measured out to ∼3 effective radii (see [1]). From these data 2D kinematic maps are constructed. We show such analyses can provide significant insights into the global kinematic structure of galaxies, and, in some cases, challenge the accepted morphological classification. Our results are of particular importance to studies which attempt to classify galaxies by their kinematic structure within one effective radius, such as the recent definition of fast- and slow- rotator classes by the SAURON project.",

author = "Proctor, {Robert N.} and Forbes, {Duncan A.} and Romanowsky, {Aaron J.} and Brodie, {Jean P.} and Jay Strader and Max Spolaor and {Trevor Mendel}, J. and Lee Spitler",

year = "2010",

doi = "10.1063/1.3458528",

language = "English",

isbn = "9780735407862",

volume = "1240",

pages = "339--342",

editor = "Debattista, {Victor P.} and Popescu, {Cristina C.}",

booktitle = "Hunting for the Dark: The Hidden Side of Galaxy Formation - Proceedings of the International Conference",

publisher = "American Institute of Physics",

address = "United States",

note = "International Conference {"}Hunting for the Dark: The Hidden Side of Galaxy Formation{"} ; Conference date: 19-10-2009 Through 23-10-2009",

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Proctor, RN, Forbes, DA, Romanowsky, AJ, Brodie, JP, Strader, J, Spolaor, M, Trevor Mendel, J & Spitler, L 2010, Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii. in VP Debattista & CC Popescu (eds), Hunting for the Dark: The Hidden Side of Galaxy Formation - Proceedings of the International Conference. vol. 1240, American Institute of Physics, College Park, Maryland, pp. 339-342, International Conference "Hunting for the Dark: The Hidden Side of Galaxy Formation", Qawra, Malta, 19/10/09. https://doi.org/10.1063/1.3458528

Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii. / Proctor, Robert N.; Forbes, Duncan A.; Romanowsky, Aaron J. et al.

Hunting for the Dark: The Hidden Side of Galaxy Formation - Proceedings of the International Conference. ed. / Victor P. Debattista; Cristina C. Popescu. Vol. 1240 College Park, Maryland : American Institute of Physics, 2010. p. 339-342.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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AU - Proctor, Robert N.

AU - Forbes, Duncan A.

AU - Romanowsky, Aaron J.

AU - Brodie, Jean P.

AU - Strader, Jay

AU - Spolaor, Max

AU - Trevor Mendel, J.

AU - Spitler, Lee

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N2 - We detail an innovative new technique for measuring the 2-D velocity moments (rotation velocity, velocity dispersion and Gauss-Hermite coefficients h3 and h4) using spectra from Keck DEIMOS multi-object spectroscopic observations. The data are used to reconstruct 2-D rotation velocity maps. Here we present data for one of five early-type galaxies whose kinematics we have measured out to ∼3 effective radii (see [1]). From these data 2D kinematic maps are constructed. We show such analyses can provide significant insights into the global kinematic structure of galaxies, and, in some cases, challenge the accepted morphological classification. Our results are of particular importance to studies which attempt to classify galaxies by their kinematic structure within one effective radius, such as the recent definition of fast- and slow- rotator classes by the SAURON project.

AB - We detail an innovative new technique for measuring the 2-D velocity moments (rotation velocity, velocity dispersion and Gauss-Hermite coefficients h3 and h4) using spectra from Keck DEIMOS multi-object spectroscopic observations. The data are used to reconstruct 2-D rotation velocity maps. Here we present data for one of five early-type galaxies whose kinematics we have measured out to ∼3 effective radii (see [1]). From these data 2D kinematic maps are constructed. We show such analyses can provide significant insights into the global kinematic structure of galaxies, and, in some cases, challenge the accepted morphological classification. Our results are of particular importance to studies which attempt to classify galaxies by their kinematic structure within one effective radius, such as the recent definition of fast- and slow- rotator classes by the SAURON project.

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BT - Hunting for the Dark: The Hidden Side of Galaxy Formation - Proceedings of the International Conference

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Proctor RN, Forbes DA, Romanowsky AJ, Brodie JP, Strader J, Spolaor M et al. Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii. In Debattista VP, Popescu CC, editors, Hunting for the Dark: The Hidden Side of Galaxy Formation - Proceedings of the International Conference. Vol. 1240. College Park, Maryland: American Institute of Physics. 2010. p. 339-342 https://doi.org/10.1063/1.3458528

Probing the 2-D kinematic structure of early-type galaxies out to 3 effective radii

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