High-resolution UKIRT observations of circumnuclear star formation in M100

S. D. Ryder*, J. H. Knapen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


We present high-resolution, near-infrared imaging of the circumnuclear region of the barred spiral galaxy M100 (NGC 4321), accompanied by near-infrared spectroscopy. We identify a total of 43 distinct regions in the K-band image, and determine magnitudes and colours for 41 of them. By comparison with other near-infrared maps we also derive colour excesses and K-band extinctions for the knots. Combining the imaging and spectroscopic results, we conclude that the knots are the result of bursts of star formation within the last 15-25 Myr. We discuss the implications of these new results for our dynamical and evolutionary understanding of this galaxy.

Original languageEnglish
Pages (from-to)L7-L12
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Issue number1
Publication statusPublished - 1 Jan 1999
Externally publishedYes


  • Galaxies: evolution
  • Galaxies: individual: M100 (NGC 4321)
  • Galaxies: kinematics and dynamics
  • Galaxies: structure
  • Infrared: galaxies


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