Toward an understanding of the globular cluster overabundance around the central giant elliptical galaxy NGC 1399

Markus Kissler-Patig, Carl J. Grillmair, Georges Meylan, Jean P. Brodie, Dante Minniti, Paul Goudfrooij

Resultado de la investigación: Article

43 Citas (Scopus)

Resumen

We investigate the kinematics of a combined sample of 74 globular clusters around NGC 1399. Their high velocity dispersion, increasing with radius, indicates their association with the gravitational potential of the galaxy cluster rather than with that of NGC 1399 itself. We find no evidence for rotation in the full sample, although there is some indication of rotation in the outer regions. The data do not allow us to detect differences between the kinematics of the blue and red subpopulations of globular clusters. A comparison of the globular cluster systems of NGC 1399 and those of NGC 1404 and NGC 1380 indicates that the globular clusters in all three galaxies are likely to have formed via similar mechanisms and at similar epochs. The only property that distinguishes the NGC 1399 globular cluster system from these others is that it is 10 times more abundant. We summarize the evidence for associating these excess globular clusters with the galaxy cluster rather than with NGC 1399 itself and suggest that the over-abundance can be explained by tidal stripping, at an early epoch, of neighboring galaxies and subsequent accumulation of globular clusters in the gravitational potential of the galaxy cluster.

Idioma originalEnglish
Páginas (desde-hasta)1206-1218
Número de páginas13
PublicaciónAstronomical Journal
Volumen117
N.º3
EstadoPublished - mar 1999

Huella dactilar

elliptical galaxies
globular clusters
kinematics
subpopulation
galaxies
gravitational fields
time measurement
stripping
indication
radii
comparison

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Citar esto

Kissler-Patig, M., Grillmair, C. J., Meylan, G., Brodie, J. P., Minniti, D., & Goudfrooij, P. (1999). Toward an understanding of the globular cluster overabundance around the central giant elliptical galaxy NGC 1399. Astronomical Journal, 117(3), 1206-1218.
Kissler-Patig, Markus ; Grillmair, Carl J. ; Meylan, Georges ; Brodie, Jean P. ; Minniti, Dante ; Goudfrooij, Paul. / Toward an understanding of the globular cluster overabundance around the central giant elliptical galaxy NGC 1399. En: Astronomical Journal. 1999 ; Vol. 117, N.º 3. pp. 1206-1218.
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abstract = "We investigate the kinematics of a combined sample of 74 globular clusters around NGC 1399. Their high velocity dispersion, increasing with radius, indicates their association with the gravitational potential of the galaxy cluster rather than with that of NGC 1399 itself. We find no evidence for rotation in the full sample, although there is some indication of rotation in the outer regions. The data do not allow us to detect differences between the kinematics of the blue and red subpopulations of globular clusters. A comparison of the globular cluster systems of NGC 1399 and those of NGC 1404 and NGC 1380 indicates that the globular clusters in all three galaxies are likely to have formed via similar mechanisms and at similar epochs. The only property that distinguishes the NGC 1399 globular cluster system from these others is that it is 10 times more abundant. We summarize the evidence for associating these excess globular clusters with the galaxy cluster rather than with NGC 1399 itself and suggest that the over-abundance can be explained by tidal stripping, at an early epoch, of neighboring galaxies and subsequent accumulation of globular clusters in the gravitational potential of the galaxy cluster.",
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Kissler-Patig, M, Grillmair, CJ, Meylan, G, Brodie, JP, Minniti, D & Goudfrooij, P 1999, 'Toward an understanding of the globular cluster overabundance around the central giant elliptical galaxy NGC 1399', Astronomical Journal, vol. 117, n.º 3, pp. 1206-1218.

Toward an understanding of the globular cluster overabundance around the central giant elliptical galaxy NGC 1399. / Kissler-Patig, Markus; Grillmair, Carl J.; Meylan, Georges; Brodie, Jean P.; Minniti, Dante; Goudfrooij, Paul.

En: Astronomical Journal, Vol. 117, N.º 3, 03.1999, p. 1206-1218.

Resultado de la investigación: Article

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T1 - Toward an understanding of the globular cluster overabundance around the central giant elliptical galaxy NGC 1399

AU - Kissler-Patig, Markus

AU - Grillmair, Carl J.

AU - Meylan, Georges

AU - Brodie, Jean P.

AU - Minniti, Dante

AU - Goudfrooij, Paul

PY - 1999/3

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N2 - We investigate the kinematics of a combined sample of 74 globular clusters around NGC 1399. Their high velocity dispersion, increasing with radius, indicates their association with the gravitational potential of the galaxy cluster rather than with that of NGC 1399 itself. We find no evidence for rotation in the full sample, although there is some indication of rotation in the outer regions. The data do not allow us to detect differences between the kinematics of the blue and red subpopulations of globular clusters. A comparison of the globular cluster systems of NGC 1399 and those of NGC 1404 and NGC 1380 indicates that the globular clusters in all three galaxies are likely to have formed via similar mechanisms and at similar epochs. The only property that distinguishes the NGC 1399 globular cluster system from these others is that it is 10 times more abundant. We summarize the evidence for associating these excess globular clusters with the galaxy cluster rather than with NGC 1399 itself and suggest that the over-abundance can be explained by tidal stripping, at an early epoch, of neighboring galaxies and subsequent accumulation of globular clusters in the gravitational potential of the galaxy cluster.

AB - We investigate the kinematics of a combined sample of 74 globular clusters around NGC 1399. Their high velocity dispersion, increasing with radius, indicates their association with the gravitational potential of the galaxy cluster rather than with that of NGC 1399 itself. We find no evidence for rotation in the full sample, although there is some indication of rotation in the outer regions. The data do not allow us to detect differences between the kinematics of the blue and red subpopulations of globular clusters. A comparison of the globular cluster systems of NGC 1399 and those of NGC 1404 and NGC 1380 indicates that the globular clusters in all three galaxies are likely to have formed via similar mechanisms and at similar epochs. The only property that distinguishes the NGC 1399 globular cluster system from these others is that it is 10 times more abundant. We summarize the evidence for associating these excess globular clusters with the galaxy cluster rather than with NGC 1399 itself and suggest that the over-abundance can be explained by tidal stripping, at an early epoch, of neighboring galaxies and subsequent accumulation of globular clusters in the gravitational potential of the galaxy cluster.

KW - Galaxies : Halos

KW - Galaxies : Kinematics and dynamics

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KW - Galaxies: Evolution

KW - Galaxies: Formation

KW - Globular clusters : General european space observatory

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Kissler-Patig M, Grillmair CJ, Meylan G, Brodie JP, Minniti D, Goudfrooij P. Toward an understanding of the globular cluster overabundance around the central giant elliptical galaxy NGC 1399. Astronomical Journal. 1999 mar;117(3):1206-1218.