Globular cluster population of the HST frontier fields galaxy J07173724+3744224
Nathan L. Carlson (1), Madina R. Sultanova (1), Sandanuwan P. Kalawila, Vithanage (1), Wayne A. Barkhouse (1), Gihan L. Ipita Kaduwa Gamage (1), Cody, M. Rude (1, 2), Omar Lopez-Cruz (3) ((1) Department of Physics and, Astrophysics, University of North Dakota

TL;DR
This study measures and analyzes the globular cluster system of the elliptical galaxy J07173724+3744224 using HST data, revealing its population size, distribution, and color bimodality, which inform galaxy formation history.
Contribution
First measurement of the globular cluster population around J07173724+3744224, including its size, distribution, and color properties, using deep HST imaging.
Findings
Total globular clusters: 3441 +/- 1416
Radial distribution follows a power law with index -0.6
Color bimodality indicates in situ formation of red clusters and accreted blue clusters
Abstract
We present the first measurement of the globular cluster population surrounding the elliptical galaxy J07173724+3744224 (z=0.1546). This galaxy is located in the foreground in the field-of-view of the Hubble Space Telescope (HST) Frontier Fields observations of galaxy cluster MACS J0717.5+3745 (z=0.5458). Based on deep HST ACS F435W, F606W, and F814W images, we find a total globular cluster population of N_tot = 3441 +/- 1416. Applying the appropriate extinction correction and filter transformation from ACS F814W to the Johnson V-band, we determine that the host galaxy has an absolute magnitude of M_V = -22.2. The specific frequency was found to be S_N = 4.5 +/- 1.8. The radial profile of the globular cluster system was best fit using a powerlaw of the form , with the globular cluster population found to be more extended than the halo light of the host galaxy…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
