scholarly journals The Star Clusters in the Starburst Irregular Galaxy NGC 1569

2000 ◽  
Vol 120 (5) ◽  
pp. 2383-2401 ◽  
Author(s):  
Deidre A. Hunter ◽  
Robert W. O’Connell ◽  
J. S. Gallagher ◽  
Tammy A. Smecker-Hane
Keyword(s):  
Star Clusters ◽  
Irregular Galaxy ◽  
Ngc 1569

Hubble Space Telescope imaging of super-star clusters in NGC 1569 and NGC 1705

1994 ◽  
Vol 433 ◽  
pp. 65 ◽  
Author(s):  
Robert W. O'Connell ◽  
John S., III Gallagher ◽  
Deidre A. Hunter
Keyword(s):  
Hubble Space Telescope ◽  
Star Clusters ◽  
Space Telescope ◽  
Super Star Clusters ◽  
Ngc 1569

scholarly journals Kinematic Masses of Super Star Clusters in NGC 1569

2002 ◽  
Vol 207 ◽  
pp. 471-473
Author(s):  
Andrea M. Gilbert ◽  
James R. Graham
Keyword(s):  
High Resolution ◽  
Velocity Dispersion ◽  
Dwarf Galaxy ◽  
Star Clusters ◽  
Stellar Velocity ◽  
Super Star Clusters ◽  
Ngc 1569

We summarize recent results from our study of the massive young super star clusters (SSCs) in the dwarf galaxy NGC 1569, and present new high-resolution NIRSPEC spectra that permit the measurement of a cluster's intrinsic stellar velocity dispersion. Thus we derive kinematic masses for the two brightest SSCs: 2.3 × 105 Msun for SSC B, and 3.9 × 105 and 4.4 × 105 Msun for the two components of SSC A.

scholarly journals THE ROLE OF THE MAGNETIC FIELD IN THE INTERSTELLAR MEDIUM OF THE POST-STARBURST DWARF IRREGULAR GALAXY NGC 1569

2010 ◽  
Vol 712 (1) ◽  
pp. 536-557 ◽  
Author(s):  
Amanda A. Kepley ◽  
Stefanie Mühle ◽  
John Everett ◽  
Ellen G. Zweibel ◽  
Eric M. Wilcots ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Interstellar Medium ◽  
Irregular Galaxy ◽  
The Magnetic Field ◽  
Ngc 1569

scholarly journals Discovery of remote star clusters in the halo of the Irregular galaxy NGC 6822

2005 ◽  
Vol 1 (C198) ◽  
pp. 257-258 ◽  
Author(s):  
Narae Hwang ◽  
Myung Gyoon Lee ◽  
Jong Chul Lee ◽  
Won-Kee Park ◽  
Hong Soo Park ◽  
...  
Keyword(s):  
Star Clusters ◽  
Irregular Galaxy ◽  
Ngc 6822

scholarly journals A search for radio supernovae and supernova remnants in the region of NGC 1569's super star clusters

2002 ◽  
Vol 381 (3) ◽  
pp. 825-833 ◽  
Author(s):  
A. Greve ◽  
A. Tarchi ◽  
S. Hüttemeister ◽  
R. de Grijs ◽  
J. M. van der Hulst ◽  
...  
Keyword(s):  
Supernova Remnants ◽  
Star Clusters ◽  
Supernovae And Supernova Remnants ◽  
Super Star Clusters ◽  
Ngc 1569

scholarly journals THE STELLAR AND GAS KINEMATICS OF THE LITTLE THINGS DWARF IRREGULAR GALAXY NGC 1569

2012 ◽  
Vol 144 (5) ◽  
pp. 152 ◽  
Author(s):  
Megan Johnson ◽  
Deidre A. Hunter ◽  
Se-Heon Oh ◽  
Hong-Xin Zhang ◽  
Bruce Elmegreen ◽  
...  
Keyword(s):  
Irregular Galaxy ◽  
Gas Kinematics ◽  
Ngc 1569

scholarly journals Observing the influence of the youngest super star clusters in NGC 1569: Keck Brackett α spectroscopy

2021 ◽  
Vol 503 (2) ◽  
pp. 2187-2194
Author(s):  
Daniel P Cohen ◽  
Jean L Turner ◽  
Sara C Beck ◽  
S Michelle Consiglio
Keyword(s):  
Near Infrared ◽  
Star Clusters ◽  
Radio Continuum ◽  
H Ii Regions ◽  
Infrared Source ◽  
H Ii Region ◽  
Super Star Clusters ◽  
Infrared Sources ◽  
Massive Clusters ◽  
Ngc 1569

ABSTRACT We report Keck–NIRSPEC observations of the Brackett α 4.05 μm recombination line across the two candidate embedded super star clusters (SSCs) in NGC 1569. These SSCs power a bright H ii region and have been previously detected as radio and mid-infrared sources. Supplemented with high-resolution VLA mapping of the radio continuum along with IRTF–TEXES spectroscopy of the [S iv] 10.5 μm line, the Brackett α data provide new insight into the dynamical state of gas ionized by these forming massive clusters. Near-infrared sources detected in 2 μm images from the slit-viewing Camera are matched with Gaia sources to obtain accurate celestial coordinates and slit positions to within ∼0${_{.}^{\prime\prime}}$1. Br α is detected as a strong emission peak powered by the less luminous infrared source, MIR1 (LIR ∼ 2 × 107 $\rm L_\odot$). The second candidate SSC MIR2 is more luminous (LIR ≳ 4 × 108 $\rm L_\odot$) but exhibits weak radio continuum and Br α emission, suggesting the ionized gas is extremely dense (ne ≳ 105 cm−3), corresponding to hypercompact H ii regions around newborn massive stars. The Br α and [S iv] lines across the region are both remarkably symmetric and extremely narrow, with observed line widths Δv ≃ 40 $\rm km\, s^{-1}$, full width at half-maximum. This result is the first clear evidence that feedback from NGC 1569’s youngest giant clusters is currently incapable of rapid gas dispersal, consistent with the emerging theoretical paradigm in the formation of giant star clusters.

Young Star Clusters in the Dwarf Irregular Galaxy, UGC 7636, = with the Giant Elliptical Galaxy NGC 4472

1997 ◽  
Vol 114 ◽  
pp. 1824 ◽  
Author(s):  
Myung Gyoon Lee ◽  
Eunhyeuk Kim ◽  
Doug Geisler
Keyword(s):  
Elliptical Galaxy ◽  
Star Clusters ◽  
Young Star ◽  
Irregular Galaxy ◽  
Young Star Clusters

scholarly journals Star clusters and young populations in the dwarf irregular galaxy Leo A

2018 ◽  
Vol 14 (S344) ◽  
pp. 139-142
Author(s):  
Rima Stonkutė ◽  
Marius Čeponis ◽  
Alina Leščinskaitė ◽  
Vladas Vansevičius
Keyword(s):  
Star Formation ◽  
Star Clusters ◽  
Star Formation History ◽  
Molecular Gas ◽  
Irregular Galaxy ◽  
Formation History ◽  
Low Metallicity ◽  
Low Mass ◽  
Density Map ◽  
Formation Efficiency

AbstractWe have studied young stellar populations and star clusters in the dwarf irregular galaxy Leo A using multicolor (B, V, R, I, Hα) photometry data obtained with the Subaru Suprime-Cam and two-color photometry results measured on archival HST/ACS F475W & F814W frames. The analysis of the main sequence (MS) and blue supergiant (BSG – “blue loop”) stars enabled us to study the star formation history in the Leo A galaxy during the last ~200 Myr. Also, we have discovered 5 low-mass (≲ 400 M⊙) star clusters within the ACS field. This finding, taking into account a low metallicity environment and a yet-undetected molecular gas in Leo A, constrains star formation efficiency estimates and scenarios. Inside the well known “hole” in the H i column density map (Hunter et al. 2012) we found a shock front (prominent in Hα), implying an unseen progenitor and reminding the “hole” problems widely discussed by Warren et al. (2011).

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