Internet Archive Scholar

THE NEXT GENERATION VIRGO CLUSTER SURVEY. X. PROPERTIES OF ULTRA-COMPACT DWARFS IN THE M87, M49, AND M60 REGIONS

Chengze Liu, Eric W. Peng, Patrick Côté, Laura Ferrarese, Andrés Jordán, J. Christopher Mihos, Hong-Xin Zhang, Roberto P. Muñoz, Thomas H. Puzia, Ariane Lançon, Stephen Gwyn, Jean-Charles Cuillandre (+9 others)
2015 Astrophysical Journal  

Preserved Fulltext

fulltext thumbnail
Web Archive Capture PDF (8.5 MB)
https://web.archive.org/web/20180724023525/https://authors.library.caltech.edu/62627/2/1508.07334v1.pdf

A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL. The file type is application/pdf.

Other Versions

2015 pre-print
arXiv:1508.07334v1 fatcat:4l5vuosi6nd4hgxnxvpwyhqaki
We use imaging from the Next Generation Virgo cluster Survey (NGVS) to present a comparative study of ultra-compact dwarf (UCD) galaxies associated with three prominent Virgo sub-clusters: those centered on the massive, red-sequence galaxies M87, M49 and M60. We show how UCDs can be selected with high completeness using a combination of half-light radius and location in color-color diagrams (u^*iK_s or u^*gz). Although the central galaxies in each of these sub-clusters have nearly identical
more » ... nosities and stellar masses, we find large differences in the sizes of their UCD populations, with M87 containing 3.5 and 7.8 times more UCDs than M49 and M60, respectively. The relative abundance of UCDs in the three regions scales in proportion to sub-cluster mass, as traced by X-ray gas mass, total gravitating mass, number of globular clusters, and number of nearby galaxies. We find that the UCDs are predominantly blue in color, with 85 blue GCs and stellar nuclei of dwarf galaxies. We present evidence that UCDs surrounding M87 and M49 may follow a morphological sequence ordered by the prominence of their outer, low surface brightness envelope, ultimately merging with the sequence of nucleated low-mass galaxies, and that envelope prominence correlates with distance from either galaxy. Our analysis provides evidence that tidal stripping of nucleated galaxies is an important process in the formation of UCDs.
doi:10.1088/0004-637x/812/1/34 fatcat:6uzy3hal6ba4reiie3pbom2jo4
Multiple Versions
Citation

Chengze Liu, Eric W. Peng, Patrick Côté, Laura Ferrarese, Andrés Jordán, J. Christopher Mihos, Hong-Xin Zhang, Roberto P. Muñoz, Thomas H. Puzia, Ariane Lançon, Stephen Gwyn, Jean-Charles Cuillandre, John P. Blakeslee, Alessandro Boselli, Patrick R. Durrell, Pierre-Alain Duc, Puragra Guhathakurta, Lauren A. MacArthur, Simona Mei, Rubén Sánchez-Janssen, Haiguang Xu. "THE NEXT GENERATION VIRGO CLUSTER SURVEY. X. PROPERTIES OF ULTRA-COMPACT DWARFS IN THE M87, M49, AND M60 REGIONS." Astrophysical Journal 812.1 (2015) 34