The ages of circumnuclear starbursts from Near-IR spectroscopy: Bushfires or Mexican Wave

S.D. Ryder; J. Knapen; A. Alonso-Herrero; M. Takamiya

The ages of circumnuclear starbursts from Near-IR spectroscopy: Bushfires or Mexican Wave

S.D. Ryder, J. Knapen, A. Alonso-Herrero, M. Takamiya

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

We have pbtained K-band spectra with CGS4 on UKIRT for circumnuclear star-forming regions in NGC 4321, NGC 2903 and NGC 7469. A comparison of the equivalent widths of Bry emission and CO absorption with starburst models in the literature allows us to simultaneously determine the age distribution and burst decay timescales around each ring. We find that the majority of the star-forming regions are rapidly decaying bursts with ages between 8 and 10 million years, but that only NGC 4321 displays a clear age sequence. We discuss the implications of these results for the triggering and evolution of circumnuclear star formation.

Original language	English
Title of host publication	Procs of the Central Kiloparsec of Starbursts & AGN
Subtitle of host publication	The La Palma Connection
Editors	J. H. Knapen, J. E. Beckman, I. Shlosman, T. J. Mahoney
Publisher	Astronomical Society of the Pacific
Pages	501-507
Publication status	Published - 2001

Publication series

Name	ASP Conf Series
Publisher	Astronomical Society of the Pacific
Volume	249

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Ryder, S. D., Knapen, J., Alonso-Herrero, A., & Takamiya, M. (2001). The ages of circumnuclear starbursts from Near-IR spectroscopy: Bushfires or Mexican Wave. In J. H. Knapen, J. E. Beckman, I. Shlosman, & T. J. Mahoney (Eds.), Procs of the Central Kiloparsec of Starbursts & AGN: The La Palma Connection (pp. 501-507). (ASP Conf Series; Vol. 249). Astronomical Society of the Pacific.

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title = "The ages of circumnuclear starbursts from Near-IR spectroscopy: Bushfires or Mexican Wave",

abstract = "We have pbtained K-band spectra with CGS4 on UKIRT for circumnuclear star-forming regions in NGC 4321, NGC 2903 and NGC 7469. A comparison of the equivalent widths of Bry emission and CO absorption with starburst models in the literature allows us to simultaneously determine the age distribution and burst decay timescales around each ring. We find that the majority of the star-forming regions are rapidly decaying bursts with ages between 8 and 10 million years, but that only NGC 4321 displays a clear age sequence. We discuss the implications of these results for the triggering and evolution of circumnuclear star formation.",

author = "S.D. Ryder and J. Knapen and A. Alonso-Herrero and M. Takamiya",

note = "Original paper can be found at http://www.astrosociety.org/pubs/cs/222-252.html--Copyright Astronomical Society of the Pacific",

year = "2001",

language = "English",

series = "ASP Conf Series",

publisher = "Astronomical Society of the Pacific",

pages = "501--507",

editor = "Knapen, {J. H.} and Beckman, {J. E. } and I. Shlosman and Mahoney, {T. J.}",

booktitle = "Procs of the Central Kiloparsec of Starbursts & AGN",

address = "United States",

}

The ages of circumnuclear starbursts from Near-IR spectroscopy: Bushfires or Mexican Wave. / Ryder, S.D.; Knapen, J.; Alonso-Herrero, A. et al.
Procs of the Central Kiloparsec of Starbursts & AGN: The La Palma Connection. ed. / J. H. Knapen; J. E. Beckman; I. Shlosman; T. J. Mahoney. Astronomical Society of the Pacific, 2001. p. 501-507 (ASP Conf Series; Vol. 249).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - The ages of circumnuclear starbursts from Near-IR spectroscopy: Bushfires or Mexican Wave

AU - Ryder, S.D.

AU - Knapen, J.

AU - Alonso-Herrero, A.

AU - Takamiya, M.

N1 - Original paper can be found at http://www.astrosociety.org/pubs/cs/222-252.html--Copyright Astronomical Society of the Pacific

PY - 2001

Y1 - 2001

N2 - We have pbtained K-band spectra with CGS4 on UKIRT for circumnuclear star-forming regions in NGC 4321, NGC 2903 and NGC 7469. A comparison of the equivalent widths of Bry emission and CO absorption with starburst models in the literature allows us to simultaneously determine the age distribution and burst decay timescales around each ring. We find that the majority of the star-forming regions are rapidly decaying bursts with ages between 8 and 10 million years, but that only NGC 4321 displays a clear age sequence. We discuss the implications of these results for the triggering and evolution of circumnuclear star formation.

AB - We have pbtained K-band spectra with CGS4 on UKIRT for circumnuclear star-forming regions in NGC 4321, NGC 2903 and NGC 7469. A comparison of the equivalent widths of Bry emission and CO absorption with starburst models in the literature allows us to simultaneously determine the age distribution and burst decay timescales around each ring. We find that the majority of the star-forming regions are rapidly decaying bursts with ages between 8 and 10 million years, but that only NGC 4321 displays a clear age sequence. We discuss the implications of these results for the triggering and evolution of circumnuclear star formation.

M3 - Conference contribution

T3 - ASP Conf Series

SP - 501

EP - 507

BT - Procs of the Central Kiloparsec of Starbursts & AGN

A2 - Knapen, J. H.

A2 - Beckman, J. E.

A2 - Shlosman, I.

A2 - Mahoney, T. J.

PB - Astronomical Society of the Pacific

ER -

The ages of circumnuclear starbursts from Near-IR spectroscopy: Bushfires or Mexican Wave

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