Hostname: page-component-7dd5485656-j7khd Total loading time: 0 Render date: 2025-10-30T17:18:44.323Z Has data issue: false hasContentIssue false
  • English
  • Français

First Results from the Triangulum Extended Survey: Insights into the Dynamical History of M33

Published online by Cambridge University Press:  30 October 2025

K. M. Gilbert Open the ORCID record for K. M. Gilbert [Opens in a new window] ,
A. C. N. Quirk ,
L. R. Cullinane Open the ORCID record for L. R. Cullinane [Opens in a new window] ,
A. Smercina  and
P. Guhathakurta
K. M. Gilbert*
Affiliation:
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218, USA The William H. Miller III Department of Physics & Astronomy, Bloomberg Center for Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218
A. C. N. Quirk
Affiliation:
Department of Astronomy, Columbia University, New York, NY, USA
L. R. Cullinane
Affiliation:
The William H. Miller III Department of Physics & Astronomy, Bloomberg Center for Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218
A. Smercina
Affiliation:
Department of Astronomy, University of Washington, Box 351580, U.W., Seattle, WA 98195-1580, USA
P. Guhathakurta
Affiliation:
Department of Astronomy & Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
*
email: kgilbert@stsci.edu
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The Triangulum Extended (TREX) Survey is a spectroscopic survey† that targets resolved stars of all ages throughout the disk of Triangulum (M33). We summarize the first results from the TREX Survey, including the discovery of a kinematically hot, halo-like population throughout M33’s inner disk in both the old and intermediate-age populations and evidence that the youngest stars have been dynamically heated. We also discuss the implications for our understanding of M33’s dynamical history in the context of recent results from the Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) Survey.

Keywords

Galaxy stellar halosTriangulum GalaxyLocal GroupGalaxy evolutionDisk galaxies

Information

Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S379: Dynamical Masses of Local Group Galaxies , December 2023 , pp. 123 - 128
Check for updates
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of International Astronomical Union

Footnotes

†

The data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation.

References

Barker, M. K., Ferguson, A. M. N., Cole, A. A., et al. 2011, MNRAS, 410, 504 CrossRefGoogle Scholar
Cockcroft, R., McConnachie, A. W., Harris, W. E., et al. 2013, MNRAS, 428, 1248 CrossRefGoogle Scholar
Druard, C., Braine, J., Schuster, K. F., et al. 2014, A&A, 567, A118 Google Scholar
Gilbert, K. M., Quirk, A. C. N., Guhathakurta, P., et al. 2022, ApJ, 924, 116 CrossRefGoogle Scholar
Gratier, P., Braine, J., Rodriguez-Fernandez, N. J., et al. 2010, A&A, 522, A3 Google Scholar
Ferguson, A., Irwin2, M., Chapman, S., et al. 2007, Island Universes, 3, 239 Google Scholar
Kam, Z. S., Carignan, C., Chemin, L., et al. 2015, MNRAS, 449, 4048 CrossRefGoogle Scholar
Kam, S. Z., Carignan, C., Chemin, L., et al. 2017, AJ, 154, 41 CrossRefGoogle Scholar
McConnachie, A. W., Irwin, M. J., Ibata, R. A., et al. 2009, Nature, 461, 66 CrossRefGoogle Scholar
McConnachie, A. W., Ibata, R., Martin, N., et al. 2018, ApJ, 868, 55 CrossRefGoogle Scholar
McMonigal, B., Lewis, G. F., Brewer, B. J., et al. 2016, MNRAS, 461, 4374 CrossRefGoogle Scholar
Patel, E., Besla, G., & Mandel, K. 2017, MNRAS, 468, 3428 CrossRefGoogle Scholar
Patel, E., Besla, G., & Sohn, S. T. 2017, MNRAS, 464, 3825 CrossRefGoogle Scholar
Putman, M. E., Peek, J. E. G., Muratov, A., et al. 2009, ApJ, 703, 1486 CrossRefGoogle Scholar
Quirk, A. C. N., Guhathakurta, P., Gilbert, K. M., et al. 2022, AJ, 163, 166 CrossRefGoogle Scholar
Semczuk, M., Łokas, E. L., Salomon, J.-B., et al. 2018, ApJ, 864, 34 CrossRefGoogle Scholar
van der Marel, R. P., Fardal, M. A., Sohn, S. T., et al. 2019, ApJ, 872, 24 CrossRefGoogle Scholar
Williams, B. F., Durbin, M. J., Dalcanton, J. J., et al. 2021, ApJS, 253, 53 CrossRefGoogle Scholar