Far-ultraviolet imaging of the globular cluster ngc 7099 with the second wide-field and planetary camera

Jeremy R. Mould; Alan M. Watson; John S. Gallagher; Gilda E. Ballester; Christopher J. Burrows; Stefano Casertano; John T. Clarke; David Crisp; Richard E. Griffiths; J. Jeff Hester; John G. Hoessel; Jon A. Holtzman; Paul A. Scowen; Karl R. Stapelfeldt; John T. Trauger; James A. Westphal

doi:10.1086/177100

Far-ultraviolet imaging of the globular cluster ngc 7099 with the second wide-field and planetary camera

Jeremy R. Mould, Alan M. Watson, John S. Gallagher, Gilda E. Ballester, Christopher J. Burrows, Stefano Casertano, John T. Clarke, David Crisp, Richard E. Griffiths, J. Jeff Hester, John G. Hoessel, Jon A. Holtzman, Paul A. Scowen, Karl R. Stapelfeldt, John T. Trauger, James A. Westphal

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

7 Scopus citations

Abstract

We have imaged the globular cluster NGC 7099 in the far-UV and visible with WFPC2 on the Hubble Space Telescope. Our far-UV images show a sparsely populated and fully resolved central region. The far-UV to visible color-magnitude diagram of these stars shows a well-defined horizontal branch with no evidence for hot, more evolved descendants. We find one hot horizontal branch star; the center of the cluster harbors four luminous blue stragglers. Far-UV images do not show any singularly steep density gradient at small radii among the horizontal branch stars of this post-core-collapse cluster.

Original language	English (US)
Pages (from-to)	762-766
Number of pages	5
Journal	Astrophysical Journal
Volume	461
Issue number	2 PART I
DOIs	https://doi.org/10.1086/177100
State	Published - 1996
Externally published	Yes

Keywords

Globular clusters: individual (NGC 7099)
Stars: evolution
Stars: horizontal-branch
Ultraviolet: stars

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/177100

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Mould, J. R., Watson, A. M., Gallagher, J. S., Ballester, G. E., Burrows, C. J., Casertano, S., Clarke, J. T., Crisp, D., Griffiths, R. E., Jeff Hester, J., Hoessel, J. G., Holtzman, J. A., Scowen, P. A., Stapelfeldt, K. R., Trauger, J. T., & Westphal, J. A. (1996). Far-ultraviolet imaging of the globular cluster ngc 7099 with the second wide-field and planetary camera. Astrophysical Journal, 461(2 PART I), 762-766. https://doi.org/10.1086/177100

Mould, JR, Watson, AM, Gallagher, JS, Ballester, GE, Burrows, CJ, Casertano, S, Clarke, JT, Crisp, D, Griffiths, RE, Jeff Hester, J, Hoessel, JG, Holtzman, JA, Scowen, PA, Stapelfeldt, KR, Trauger, JT & Westphal, JA 1996, 'Far-ultraviolet imaging of the globular cluster ngc 7099 with the second wide-field and planetary camera', Astrophysical Journal, vol. 461, no. 2 PART I, pp. 762-766. https://doi.org/10.1086/177100

@article{9f50912054d34aaea512e0ac0205bc8c,

title = "Far-ultraviolet imaging of the globular cluster ngc 7099 with the second wide-field and planetary camera",

abstract = "We have imaged the globular cluster NGC 7099 in the far-UV and visible with WFPC2 on the Hubble Space Telescope. Our far-UV images show a sparsely populated and fully resolved central region. The far-UV to visible color-magnitude diagram of these stars shows a well-defined horizontal branch with no evidence for hot, more evolved descendants. We find one hot horizontal branch star; the center of the cluster harbors four luminous blue stragglers. Far-UV images do not show any singularly steep density gradient at small radii among the horizontal branch stars of this post-core-collapse cluster.",

keywords = "Globular clusters: individual (NGC 7099), Stars: evolution, Stars: horizontal-branch, Ultraviolet: stars",

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

year = "1996",

doi = "10.1086/177100",

language = "English (US)",

volume = "461",

pages = "762--766",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2 PART I",

}

TY - JOUR

T1 - Far-ultraviolet imaging of the globular cluster ngc 7099 with the second wide-field and planetary camera

AU - Mould, Jeremy R.

AU - Watson, Alan M.

AU - Gallagher, John S.

AU - Ballester, Gilda E.

AU - Burrows, Christopher J.

AU - Casertano, Stefano

AU - Clarke, John T.

AU - Crisp, David

AU - Griffiths, Richard E.

AU - Jeff Hester, J.

AU - Hoessel, John G.

AU - Holtzman, Jon A.

AU - Scowen, Paul A.

AU - Stapelfeldt, Karl R.

AU - Trauger, John T.

AU - Westphal, James A.

PY - 1996

Y1 - 1996

N2 - We have imaged the globular cluster NGC 7099 in the far-UV and visible with WFPC2 on the Hubble Space Telescope. Our far-UV images show a sparsely populated and fully resolved central region. The far-UV to visible color-magnitude diagram of these stars shows a well-defined horizontal branch with no evidence for hot, more evolved descendants. We find one hot horizontal branch star; the center of the cluster harbors four luminous blue stragglers. Far-UV images do not show any singularly steep density gradient at small radii among the horizontal branch stars of this post-core-collapse cluster.

AB - We have imaged the globular cluster NGC 7099 in the far-UV and visible with WFPC2 on the Hubble Space Telescope. Our far-UV images show a sparsely populated and fully resolved central region. The far-UV to visible color-magnitude diagram of these stars shows a well-defined horizontal branch with no evidence for hot, more evolved descendants. We find one hot horizontal branch star; the center of the cluster harbors four luminous blue stragglers. Far-UV images do not show any singularly steep density gradient at small radii among the horizontal branch stars of this post-core-collapse cluster.

KW - Globular clusters: individual (NGC 7099)

KW - Stars: evolution

KW - Stars: horizontal-branch

KW - Ultraviolet: stars

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U2 - 10.1086/177100

DO - 10.1086/177100

M3 - Article

AN - SCOPUS:21344460498

SN - 0004-637X

VL - 461

SP - 762

EP - 766

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART I

ER -

Far-ultraviolet imaging of the globular cluster ngc 7099 with the second wide-field and planetary camera

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