The Star Clusters in the Starburst Irregular Galaxy NGC 1569

  title={The Star Clusters in the Starburst Irregular Galaxy NGC 1569},
  author={Deidre A. Hunter and Robert W. O’Connell and John S. Gallagher and T. A. Smecker-hane},
  journal={The Astronomical Journal},
We examine star clusters in the irregular starburst galaxy NGC 1569 from Hubble Space Telescope images taken with filters F336W, F555W, and F814W. In addition to the two super–star clusters that are well known, we identify 45 other clusters that are compact but resolved. Integrated UVI colors of the clusters span a large range, and comparison with coeval evolutionary models suggests that the ages range from 2–3 Myr to 1 Gyr. Most of the clusters have colors consistent with ages of ≤30 Myr… 

Tables from this paper

The Star Clusters in the Irregular Galaxy NGC 4449
We examine the star clusters in the luminous irregular galaxy NGC 4449. We use a near-infrared spectrum and broadband images taken with the Hubble Space Telescope to place a limit of 8-15 Myr on the
Star Cluster Formation and Evolution in the Dwarf Starburst Galaxy NGC 1569
We analyse multi-wavelength Hubble Space Telescope (HST) observations of a large number of star clusters in the nearby (post-) starburst dwarf galaxy NGC 1569. Their spectral energy distributions
On the formation of star clusters in the merger NGC 6240
We identified star clusters in archived HST/WFPC2 images of the merger and ultraluminous infrared galaxy NGC 6240, with the aim of investigating whether star cluster properties (luminosity, age and
Compact Star Clusters in Nearby Dwarf Irregular Galaxies
Nearby dwarf irregular galaxies were searched for compact star clusters by using data from the Hubble Space Telescope archives. Eight of the 22 galaxies in our sample were found to host compact
The nearby dwarf starburst galaxy NGC 5253 hosts a number of young, massive star clusters, the two youngest of which are centrally concentrated and surrounded by thermal radio emission (the "radio
Photometry of star clusters with Hubble Space Telescope - History of star formation in the vicinity of a nuclear ring
Using Hubble Space Telescope (HST) WFPC2 images, we have obtained U, B, V, I, and Hα photometry for 76 star clusters in the nuclear star-forming ring of the barred spiral galaxy NGC 4314. These
Star cluster versus field star formation in the nucleus of the prototype starburst galaxy M 82
We analyse high-resolution Hubble Space Telescope/Advanced Camera for Surveys imaging of the nuclear starburst region of M82, obtained as part of the Hubble Heritage mosaic made of this galaxy, in
The cluster population of the irregular galaxy NGC 4449 as seen by the Hubble Advanced Camera for Surveys
We present a study of the star cluster population in the starburst irregular galaxy NGC 4449 based on B, V, I, and Ha images taken with the Advanced Camera for Surveys on the Hubble Space Telescope.
Star Formation in Clusters
HST is very well tailored for observations of extragalactic star clusters. One obvious reason is HST's high spatial resolution, but equally important is the wavelength range offered by the
The Recent Evolution of the Dwarf Starburst Galaxy NGC 625 from Hubble Space Telescope Imaging
New Hubble Space Telescope WFPC2 imaging of the dwarf starburst galaxy NGC 625 is presented. These data, which are 80% complete to V and I magnitudes of 26.0 and 25.3, respectively, allow us to study


Hubble Space Telescope imaging of super-star clusters in NGC 1569 and NGC 1705
We examine the structural properties of three super-star clusters in the nearby, H I-rich galaxies NGC 1569 and NGC 1705. The clusters, which have total absolute V magnitudes between -13.3 and -14.1,
Hubble Space Telescope imaging of the central star forming region in NGC 1140 (exp 1)
We present broadband images taken with the Hubble Space Telescope's Planetary Camera of the central supergiant H II region in the amorphous galaxy NGC 1140. These images allow observations to a
The Structure of the Super-Star Clusters in NGC 1569 from Hubble Space Telescope WFPC2 Images*
We present high-resolution observations of the super-star clusters in the nearby irregular galaxy NGC 1569, obtained with the WFPC2 on board the Hubble Space Telescope. Our analysis shows that the
The Resolved Stellar Population of the Poststarburst Galaxy NGC 1569
We present Hubble Space Telescope (HST) Wide Field Planetary Camera 2 (WFPC2) photometry of the resolved stellar population in the poststarburst galaxy NGC 1569. The color-magnitude diagram (CMD)
Hubble Space Telescope discovery of candidate young globular clusters in the merger remnant NGC 7252
New, high-resolution images of the central region of NGC 7252 obtained with the Planetary Camera of the HST are presented. NGC 7252 is a prototypical example of a remnant of two merged disk galaxies.
Stellar populations and ages of M82 super star clusters
We present high signal-to-noise ratio optical spectra of two luminous super star clusters in the starburst galaxy M82. The data for cluster F and the nearby, highly reddened, cluster L were obtained
The Intermediate-mass Stellar Population of the Large Magellanic Cloud Cluster NGC 1818 and the Universality of the Stellar Initial Mass Function*
We present stellar photometry from Hubble Space Telescope images of NGC 1818, a young populous star cluster in the Large Magellanic Cloud. The cluster stars in both the core and the outlying regions
Are the Super-Star Clusters of NGC 1569 in a Poststarburst Phase?
We present spectroscopic observations in the near-ultraviolet, optical, and near-infrared of the super- star clusters (hereafter SSC A and SSC B) in NGC 1569. Previous studies have suggested that
An Emission-line Study of Supergiant Ionized Filaments in Irregular Galaxies*
We present low- and high-dispersion emission-line observations of kiloparsec-sized, low surface brightness filaments of ionized gas in four irregular galaxies. These four galaxies span a range in
Planetary Camera observations of NGC 1275 - Discovery of a central population of compact massive blue star clusters
We have discovered a population of bright blue pointlike sources within 5 kpc of the nucleus of NGC 1275 using HST Planetary Camera observations. The typical object has M_v~- 12 to - 14 (H_0 = 75 km