Age dating a starburst: Gemini/CIRPASS observations of the core of M 83

S.D. Ryder; J. Knapen; L.M. Mazzuca; R.G. Sharp; I.R. Parry

Age dating a starburst: Gemini/CIRPASS observations of the core of M 83

S.D. Ryder, J. Knapen, L.M. Mazzuca, R.G. Sharp, I.R. Parry

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Abstract

The circumnuclear starburst in NGC 5236 (M 83) has been studied photometrically by Harris et al. (2001) using HST/WFPC2 images in the broad-band near-UV and optical, as well as narrow-band H® and H¯ to derive colors and line equivalent widths for 45 clusters. Despite the excellent spatial resolution of these observations, optical photometric analyses such as this su®er from: (i) patchy (and not easily quanti¯able) dust extinction; (ii) the fact that the reddening vector parallels the evolutionary tracks in a two-color diagram; and (iii) selection e®ects, which tend to exclude the very youngest (t < 5 Myr) clusters which have strong emission lines, but only a weak stellar continuum. Additionally, it is not possible to distinguish an instantaneous burst of star formation from a constant star formation rate, on the basis of broad-band colors alone. [opening paragraph]

Original language	English
Title of host publication	In: The Neutral ISM in Starburst Galaxies - ASP Conference Series 320
Publisher	Astronomical Society of the Pacific
Pages	311
ISBN (Print)	1-58381-182-6, 978-1-58381-255-6
Publication status	Published - 2004

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title = "Age dating a starburst: Gemini/CIRPASS observations of the core of M 83",

abstract = "The circumnuclear starburst in NGC 5236 (M 83) has been studied photometrically by Harris et al. (2001) using HST/WFPC2 images in the broad-band near-UV and optical, as well as narrow-band H{\textregistered} and H¯ to derive colors and line equivalent widths for 45 clusters. Despite the excellent spatial resolution of these observations, optical photometric analyses such as this su{\textregistered}er from: (i) patchy (and not easily quanti¯able) dust extinction; (ii) the fact that the reddening vector parallels the evolutionary tracks in a two-color diagram; and (iii) selection e{\textregistered}ects, which tend to exclude the very youngest (t < 5 Myr) clusters which have strong emission lines, but only a weak stellar continuum. Additionally, it is not possible to distinguish an instantaneous burst of star formation from a constant star formation rate, on the basis of broad-band colors alone. [opening paragraph]",

author = "S.D. Ryder and J. Knapen and L.M. Mazzuca and R.G. Sharp and I.R. Parry",

note = "Original paper can be found at: http://www.astrosociety.org/pubs/cs/309.html--Copyright Astronomical Society of the Pacific",

year = "2004",

language = "English",

isbn = "1-58381-182-6",

pages = "311",

booktitle = "In: The Neutral ISM in Starburst Galaxies - ASP Conference Series 320",

publisher = "Astronomical Society of the Pacific",

address = "United States",

}

TY - GEN

T1 - Age dating a starburst: Gemini/CIRPASS observations of the core of M 83

AU - Ryder, S.D.

AU - Knapen, J.

AU - Mazzuca, L.M.

AU - Sharp, R.G.

AU - Parry, I.R.

N1 - Original paper can be found at: http://www.astrosociety.org/pubs/cs/309.html--Copyright Astronomical Society of the Pacific

PY - 2004

Y1 - 2004

N2 - The circumnuclear starburst in NGC 5236 (M 83) has been studied photometrically by Harris et al. (2001) using HST/WFPC2 images in the broad-band near-UV and optical, as well as narrow-band H® and H¯ to derive colors and line equivalent widths for 45 clusters. Despite the excellent spatial resolution of these observations, optical photometric analyses such as this su®er from: (i) patchy (and not easily quanti¯able) dust extinction; (ii) the fact that the reddening vector parallels the evolutionary tracks in a two-color diagram; and (iii) selection e®ects, which tend to exclude the very youngest (t < 5 Myr) clusters which have strong emission lines, but only a weak stellar continuum. Additionally, it is not possible to distinguish an instantaneous burst of star formation from a constant star formation rate, on the basis of broad-band colors alone. [opening paragraph]

AB - The circumnuclear starburst in NGC 5236 (M 83) has been studied photometrically by Harris et al. (2001) using HST/WFPC2 images in the broad-band near-UV and optical, as well as narrow-band H® and H¯ to derive colors and line equivalent widths for 45 clusters. Despite the excellent spatial resolution of these observations, optical photometric analyses such as this su®er from: (i) patchy (and not easily quanti¯able) dust extinction; (ii) the fact that the reddening vector parallels the evolutionary tracks in a two-color diagram; and (iii) selection e®ects, which tend to exclude the very youngest (t < 5 Myr) clusters which have strong emission lines, but only a weak stellar continuum. Additionally, it is not possible to distinguish an instantaneous burst of star formation from a constant star formation rate, on the basis of broad-band colors alone. [opening paragraph]

M3 - Conference contribution

SN - 1-58381-182-6

SN - 978-1-58381-255-6

SP - 311

BT - In: The Neutral ISM in Starburst Galaxies - ASP Conference Series 320

PB - Astronomical Society of the Pacific

ER -

Age dating a starburst: Gemini/CIRPASS observations of the core of M 83

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