Liu, Chengze and Peng, Eric W. and Côté, Patrick and Zhang, Hong-Xin and Ferrarese, Laura and Jordán, Andrés and Mihos, J. Christopher and Muñoz, Roberto P. and Puzia, Thomas H. and Lançon, Ariane and Gwyn, Stephen and Cuillandre, Jean-Charles and Blakeslee, John P. and Boselli, Alessandro and Durrell, Patrick R. and Duc, Pierre-Alain and Guhathakurta, Puragra and MacArthur, Lauren A. and Mei, Simona and Sánchez-Janssen, Rubén and Xu, Haiguang (2018) The properties of bright globular clusters, ultra-compact dwarfs and dwarf nuclei in the Virgo core: hints on origin of ultra-compact dwarf galaxies (UCDs). In: Dwarf Galaxies: From the Deep Universe to the Present. Proceedings IAU Symposium. Vol.14. No.344. Cambridge University Press , Cambridge, pp. 384-388. ISBN 9781108471619. https://resolver.caltech.edu/CaltechAUTHORS:20200501-083801873
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Abstract
Based on the data from the Next Generation Virgo cluster Survey (NGVS), we statistically study the photometric properties of globular clusters (GCs), ultra-compact dwarfs (UCDs) and dwarf nuclei in the Virgo core (M87) region. We found an obvious negative color (g - z) gradient in GC system associate with M87, i.e. GCs in the outer regions are bluer. However, such color gradient does not exist in UCD system, neither in dwarf nuclei system around M87. In addition, we found that many UCDs are surrounded by extended, low surface brightness envelopes. The dwarf nuclei and UCDs show different spatial distributions from GCs, with dwarf nuclei and UCDs (especially for the UCDs with visible envelopes) lying at larger distances to the Virgo center. These results support the view that UCDs (at least for a fraction of UCDs) are more tied to dwarf nuclei than to GCs.
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| Additional Information: | © 2019 International Astronomical Union. The authors acknowledge the NSFC grants 11673017, 11833005, 11621303, 11203017, 11433002. C.L. is supported by Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education. | ||||||||||||||
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| Subject Keywords: | galaxies: dwarf; galaxies: nuclei; galaxies: star clusters: general; globular clusters: general | ||||||||||||||
| Series Name: | Proceedings IAU Symposium | ||||||||||||||
| Issue or Number: | 344 | ||||||||||||||
| DOI: | 10.1017/s1743921318006701 | ||||||||||||||
| Record Number: | CaltechAUTHORS:20200501-083801873 | ||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20200501-083801873 | ||||||||||||||
| Official Citation: | Liu, C., Peng, E., Côté, P., Zhang, H., Ferrarese, L., Jordán, A., . . . Xu, H. (2018). The properties of bright globular clusters, ultra-compact dwarfs and dwarf nuclei in the Virgo core: Hints on origin of ultra-compact dwarf galaxies (UCDs). Proceedings of the International Astronomical Union, 14(S344), 384-388. doi:10.1017/S1743921318006701 | ||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||
| ID Code: | 102956 | ||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||
| Deposited On: | 01 May 2020 15:48 | ||||||||||||||
| Last Modified: | 16 Nov 2021 18:17 |
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