English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We here present the luminosity function (LF) of globular clusters (GCs) infive nearby spiral galaxies using the samples of GC candidates selected inHubble Space Telescope mosaic images in F435W, F555W and F814W filters. Oursearch, which surpasses the fractional area covered by all previous searches inthese galaxies, has resulted in the detection of 158 GC candidates in M81, 1123in M101, 226 in NGC4258, 293 in M51 and 173 in NGC628. The LFs constructed fromthis dataset, after correcting for relatively small contamination from reddenedyoung clusters, are log-normal in nature, which was hitherto established onlyfor the Milky Way (MW) and Andromeda among spiral galaxies. The magnitude atthe turn-over (TO) corresponds to Mv(TO)=-7.41+/-0.14 in four of the galaxieswith Hubble types Sc or earlier, in excellent agreement withMv(TO)=-7.40+/-0.10 for the MW. The TO magnitude is equivalent to a mass of~3x10^5 Msun for an old, metal-poor population. Mv(TO) is fainter by ~1.16magnitude for the fifth galaxy, M101, which is of Hubble type Scd. The TOdependence on Hubble type implies that the GCs in early-type spirals areclassical GCs, which have a universal TO, whereas the GC population inlate-type galaxies is dominated by old disk clusters, which are in general lessmassive. The radial density distribution of GCs in our sample galaxies followsthe S\'ersic function with exponential power-law indices, and effective radiiof 4.0-9.5 kpc. GCs in the sample galaxies have a mean specific frequency of1.10+/-0.24, after correcting for magnitude and radial incompleteness factors.

Luminosity functions of globular clusters in five nearby spiral galaxies using HST/ACS images