High-resolution UKIRT observations of circumnuclear star formation in M100

S.D. Ryder; J. Knapen

doi:10.1046/j.1365-8711.1999.02204.x

High-resolution UKIRT observations of circumnuclear star formation in M100

S.D. Ryder, J. Knapen

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Abstract

We present high-resolution, near-infrared imaging of the circumnuclear region of the barred spiral galaxy M100 (=NGC 4321), accompanied by near-infrared spec- troscopy.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 language	English
Pages (from-to)	L7-L12
Journal	Monthly Notices of the Royal Astronomical Society
Volume	302
Issue number	1
DOIs	https://doi.org/10.1046/j.1365-8711.1999.02204.x
Publication status	Published - Jan 1999

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title = "High-resolution UKIRT observations of circumnuclear star formation in M100",

abstract = "We present high-resolution, near-infrared imaging of the circumnuclear region of the barred spiral galaxy M100 (=NGC 4321), accompanied by near-infrared spec- troscopy.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.",

author = "S.D. Ryder and J. Knapen",

note = "The definitive version is available at www.blackwell-synergy.com '. Copyright Blackwell Publishing DOI : 10.1046/j.1365-8711.1999.02204.x",

year = "1999",

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doi = "10.1046/j.1365-8711.1999.02204.x",

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T1 - High-resolution UKIRT observations of circumnuclear star formation in M100

AU - Ryder, S.D.

AU - Knapen, J.

N1 - The definitive version is available at www.blackwell-synergy.com '. Copyright Blackwell Publishing DOI : 10.1046/j.1365-8711.1999.02204.x

PY - 1999/1

Y1 - 1999/1

N2 - We present high-resolution, near-infrared imaging of the circumnuclear region of the barred spiral galaxy M100 (=NGC 4321), accompanied by near-infrared spec- troscopy.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.

AB - We present high-resolution, near-infrared imaging of the circumnuclear region of the barred spiral galaxy M100 (=NGC 4321), accompanied by near-infrared spec- troscopy.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.

U2 - 10.1046/j.1365-8711.1999.02204.x

DO - 10.1046/j.1365-8711.1999.02204.x

M3 - Article

SN - 0035-8711

VL - 302

SP - L7-L12

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

High-resolution UKIRT observations of circumnuclear star formation in M100

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