Highly efficient star formation in NGC 5253 possibly from stream-fed accretion

  title={Highly efficient star formation in NGC 5253 possibly from stream-fed accretion},
  author={Jean L. Turner and Sara C. Beck and Dominic J. Benford and S. Michelle Consiglio and Paul T. P. Ho and Attila Kov{\'a}cs and David S. Meier and J.-H. Zhao},
Gas clouds in present-day galaxies are inefficient at forming stars. Low star-formation efficiency is a critical parameter in galaxy evolution: it is why stars are still forming nearly 14 billion years after the Big Bang and why star clusters generally do not survive their births, instead dispersing to form galactic disks or bulges. Yet the existence of ancient massive bound star clusters (globular clusters) in the Milky Way suggests that efficiencies were higher when they formed ten billion… 
Submillimeter View of Gas and Dust in the Forming Super Star Cluster in NGC 5253
  • J. Turner
  • Physics
    Proceedings of the International Astronomical Union
  • 2015
Abstract A giant molecular cloud has been detected surrounding the supernebula in NGC 5253, revealing details of the formation and feedback process in a very massive star cluster. “Cloud D” was
The blue compact dwarf galaxy NGC 5253 hosts a very young starburst containing twin nuclear star clusters, separated by a projected distance of 5 pc. One cluster (#5) coincides with the peak of the
Outflows from Super Star Clusters in the Central Starburst of NGC 253
Young massive clusters play an important role in the evolution of their host galaxies, and feedback from the high-mass stars in these clusters can have profound effects on the surrounding
On the early evolution of massive star clusters: the case of cloud D1 and its embedded cluster in NGC 5253
We discuss a theoretical model for the early evolution of massive star clusters and confront it with the ALMA, radio and infrared observations of the young stellar cluster highly obscured by the
Young, old, massive: Steps to understanding globular cluster formation
  • W. Harris
  • Physics
    Proceedings of the International Astronomical Union
  • 2019
Abstract On observational grounds we now know a huge amount about the characteristics of massive star clusters in galaxies of all types, from the smallest dwarfs to the most massive giants and even
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
Star Formation and Molecular Gas in Extremely Metal-poor Galaxies: Insights from the Thermal Balance in the Neutral Gas
  • V. Lebouteiller
  • Physics
    Proceedings of the International Astronomical Union
  • 2018
Abstract The apparent lack of cold molecular gas in blue compact dwarf (BCD) galaxies is at variance with their intense star-formation episode. The CO molecule, often used a tracer of H2 through a
Extreme Variation in Star Formation Efficiency across a Compact, Starburst Disk Galaxy
We report on the internal distribution of star formation efficiency in IRAS 08339+6517 (hereafter IRAS08), using ∼200 pc resolution CO(2 − 1) observations from NOEMA. The molecular gas depletion time
Starburst and post-starburst high-redshift protogalaxies
Quenching of star-formation has been identified in many starburst and post-starburst galaxies, indicating burst-like star-formation histories (SFH) in the primordial Universe. Galaxies undergoing
Two Thresholds for Globular Cluster Formation and the Common Occurrence of Massive Clusters in the Early Universe
Young massive clusters (YMCs) are usually accompanied by lower-mass clusters and unbound stars with a total mass equal to several tens times the mass of the YMC. If this was also true when globular


Cold streams in early massive hot haloes as the main mode of galaxy formation
‘stream-fed galaxies’ are reported, formed from steady, narrow, cold gas streams that penetrate the shock-heated media of massive dark matter haloes and keep the rotating disk configuration intact, although turbulent and broken into giant star-forming clumps that merge into a central spheroid.
An extragalactic supernebula confined by gravity
The measurement of infrared hydrogen recombination lines from a young, forming super star cluster in the dwarf galaxy NGC5253 is reported, which indicates that the gases within the cluster seem bound by gravity, which may explain why the windy and luminous O stars have not yet blown away those gases.
Star formation in NGC 5253
Evidence on star formation in the nearby galaxy NGC 5253 obtained from star clusters and diffuse halo light is examined. The data include UBV CCD imaging, in which over 100 clusters in the halo are
Inefficient star formation in extremely metal poor galaxies
Spatially resolved infrared observations of two galaxies with oxygen abundances below ten per cent of the solar value show that stars formed very inefficiently in seven star-forming clumps in these galaxies, suggesting that star formation may have been very inefficient in the early Universe.
Dust and Recent Star Formation in the Core of NGC5253
(Abridged) Ultraviolet and optical narrow and broad band images of NGC5253 obtained with the HST WFPC2 are used to derive the properties of the dust distribution and the recent star formation history
Star formation in active dwarf galaxies
Star formation and the ISM in active dwarf galaxies are studied based on data from the IRAS Point Source Catalog. The dwarf galaxies that show evidence of recent energetic star formation are
The Impact of Star Formation on the Interstellar Medium in Dwarf Galaxies. II. The Formation of Galactic Winds
Images and long-slit echelle spectra of the Hα emission from 14 dwarf galaxies and M82 have been used to identify expanding shells of ionized gas. Supershells (radius >300 pc) are found in 12 of the
A CO Map of the Dwarf Starburst Galaxy NGC 5253
We have mapped CO and 2.6 mm continuum emission in the dwarf galaxy NGC 5253 with the Owens Valley Millimeter Array. CO is detected along the prominent dust lane in the nucleus. The CO emission is
The Recent Cluster Formation Histories of NGC 5253 and NGC 3077: Environmental Impact on Star Formation
We present multicolor photometry of bright star cluster candidates in the nearby starburst galaxies NGC 3077 and NGC 5253, observed with the Hubble Space Telescope Wide Field Planetary Camera 2 in
Molecular Gas and the Young Starburst in NGC 5253 Revisited
We report the detection of CO(2–1) and 3.1 and 1.3 mm continuum emission toward the extremely young starburst in NGC 5253, with data taken from the Owens Valley Millimeter Array. Faint CO emission