Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Star Cluster System of the NGC 7673 Starburst   We investigate the star cluster system in the starburst galaxy NGC 7673 using
archival Hubble Space Telescope WFPC2 broad-band images. For the first time we
are able to examine the internal structures of the prominent optical clumps in
this galaxy. The clumps are composed of young stars, 16-33 % of which are in
bright star clusters. We identify 268 star cluster candidates in both the F555W
and F814W images, and 50 clusters with the F255W filter. These data allow us to
estimate ages and masses using color-magnitude and two-color diagrams for our
sample. We find a population of young, < 6 Myr clusters located throughout the
galaxy with concentrations in the clumps. Star cluster mass estimates are 5-50
x 10^4 M_solar for the brightest objects. The starburst remains active in
physically well-separated regions, indicating a widespread starburst trigger.
We discuss clump lifetimes, their implications for the future evolution of NGC
7673, and possible relationships to high redshift starbursts.

22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph