Deep hubble space telescope observations of blue star clusters in NGC 3597

Matthew N. Carlson; Jon A. Holtzman; Carl J. Grillmair; Jeremy R. Mould; Richard E. Griffiths; Gilda E. Ballester; Christopher J. Burrows; John T. Clarke; David Crisp; Robin W. Evans; John S. Gallagher; J. Jeff Hester; John G. Hoessel; Paul A. Scowen; Karl R. Stapelfeldt; John T. Trauger; Alan M. Watson; James A. Westphal

doi:10.1086/300819

Deep hubble space telescope observations of blue star clusters in NGC 3597

Matthew N. Carlson^*, Jon A. Holtzman, Carl J. Grillmair, Jeremy R. Mould, Richard E. Griffiths, Gilda E. Ballester, Christopher J. Burrows, John T. Clarke, David Crisp, Robin W. Evans, John S. Gallagher, J. Jeff Hester, John G. Hoessel, Paul A. Scowen, Karl R. Stapelfeldt, John T. Trauger, Alan M. Watson, James A. Westphal

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

We have analyzed HST/WFPC2 images of NGC 3597 and find ≃700 compact objects surrounding the galaxy with an average (B-R)_o ≃ 0.6. We propose that the majority of these objects are young globular clusters. They have a spread in colors that is consistent with that expected for a population of young clusters with a common age and spread induced by photometric errors and reddening within NGC 3597. If these objects were similar to the Galactic globular cluster system seen at a younger age, we would predict a turnover in the luminosity function at B ≃ 23. However, we find that the luminosity function for the clusters is increasing to the limits of our photometry (B ≃ 27).

Original language	English
Pages (from-to)	1700-1707
Number of pages	8
Journal	Astronomical Journal
Volume	117
Issue number	4
DOIs	https://doi.org/10.1086/300819
Publication status	Published - Apr 1999

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Carlson, M. N., Holtzman, J. A., Grillmair, C. J., Mould, J. R., Griffiths, R. E., Ballester, G. E., Burrows, C. J., Clarke, J. T., Crisp, D., Evans, R. W., Gallagher, J. S., Hester, J. J., Hoessel, J. G., Scowen, P. A., Stapelfeldt, K. R., Trauger, J. T., Watson, A. M., & Westphal, J. A. (1999). Deep hubble space telescope observations of blue star clusters in NGC 3597. Astronomical Journal, 117(4), 1700-1707. https://doi.org/10.1086/300819

@article{56221d66ad284b0b9835dd26f55aaeff,

title = "Deep hubble space telescope observations of blue star clusters in NGC 3597",

abstract = "We have analyzed HST/WFPC2 images of NGC 3597 and find ≃700 compact objects surrounding the galaxy with an average (B-R)o ≃ 0.6. We propose that the majority of these objects are young globular clusters. They have a spread in colors that is consistent with that expected for a population of young clusters with a common age and spread induced by photometric errors and reddening within NGC 3597. If these objects were similar to the Galactic globular cluster system seen at a younger age, we would predict a turnover in the luminosity function at B ≃ 23. However, we find that the luminosity function for the clusters is increasing to the limits of our photometry (B ≃ 27).",

keywords = "Galaxies: star clusters",

author = "Carlson, {Matthew N.} and Holtzman, {Jon A.} and Grillmair, {Carl J.} and Mould, {Jeremy R.} and Griffiths, {Richard E.} and Ballester, {Gilda E.} and Burrows, {Christopher J.} and Clarke, {John T.} and David Crisp and Evans, {Robin W.} and Gallagher, {John S.} and Hester, {J. Jeff} and Hoessel, {John G.} and Scowen, {Paul A.} and Stapelfeldt, {Karl R.} and Trauger, {John T.} and Watson, {Alan M.} and Westphal, {James A.}",

year = "1999",

month = apr,

doi = "10.1086/300819",

language = "English",

volume = "117",

pages = "1700--1707",

journal = "Astronomical Journal",

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publisher = "American Astronomical Society",

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Carlson, MN, Holtzman, JA, Grillmair, CJ, Mould, JR, Griffiths, RE, Ballester, GE, Burrows, CJ, Clarke, JT, Crisp, D, Evans, RW, Gallagher, JS, Hester, JJ, Hoessel, JG, Scowen, PA, Stapelfeldt, KR, Trauger, JT, Watson, AM & Westphal, JA 1999, 'Deep hubble space telescope observations of blue star clusters in NGC 3597', Astronomical Journal, vol. 117, no. 4, pp. 1700-1707. https://doi.org/10.1086/300819

TY - JOUR

T1 - Deep hubble space telescope observations of blue star clusters in NGC 3597

AU - Carlson, Matthew N.

AU - Holtzman, Jon A.

AU - Grillmair, Carl J.

AU - Mould, Jeremy R.

AU - Griffiths, Richard E.

AU - Ballester, Gilda E.

AU - Burrows, Christopher J.

AU - Clarke, John T.

AU - Crisp, David

AU - Evans, Robin W.

AU - Gallagher, John S.

AU - Hester, J. Jeff

AU - Hoessel, John G.

AU - Scowen, Paul A.

AU - Stapelfeldt, Karl R.

AU - Trauger, John T.

AU - Watson, Alan M.

AU - Westphal, James A.

PY - 1999/4

Y1 - 1999/4

N2 - We have analyzed HST/WFPC2 images of NGC 3597 and find ≃700 compact objects surrounding the galaxy with an average (B-R)o ≃ 0.6. We propose that the majority of these objects are young globular clusters. They have a spread in colors that is consistent with that expected for a population of young clusters with a common age and spread induced by photometric errors and reddening within NGC 3597. If these objects were similar to the Galactic globular cluster system seen at a younger age, we would predict a turnover in the luminosity function at B ≃ 23. However, we find that the luminosity function for the clusters is increasing to the limits of our photometry (B ≃ 27).

AB - We have analyzed HST/WFPC2 images of NGC 3597 and find ≃700 compact objects surrounding the galaxy with an average (B-R)o ≃ 0.6. We propose that the majority of these objects are young globular clusters. They have a spread in colors that is consistent with that expected for a population of young clusters with a common age and spread induced by photometric errors and reddening within NGC 3597. If these objects were similar to the Galactic globular cluster system seen at a younger age, we would predict a turnover in the luminosity function at B ≃ 23. However, we find that the luminosity function for the clusters is increasing to the limits of our photometry (B ≃ 27).

KW - Galaxies: star clusters

UR - http://www.scopus.com/inward/record.url?scp=0039527056&partnerID=8YFLogxK

U2 - 10.1086/300819

DO - 10.1086/300819

M3 - Article

SN - 0004-6256

VL - 117

SP - 1700

EP - 1707

JO - Astronomical Journal

JF - Astronomical Journal

IS - 4

ER -

Deep hubble space telescope observations of blue star clusters in NGC 3597

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