DETAILED CHEMICAL ABUNDANCES OF GLOBULAR CLUSTERS IN LOCAL GROUP DWARF GALAXIES
被引:15
作者:
Colucci, J. E.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Santa Cruz, UCO Lick Observ, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95064 USAUniv Calif Santa Cruz, UCO Lick Observ, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95064 USA
Colucci, J. E.
[1
]
Bernstein, R. A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Santa Cruz, UCO Lick Observ, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95064 USAUniv Calif Santa Cruz, UCO Lick Observ, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95064 USA
Bernstein, R. A.
[1
]
McWilliam, A.
论文数: 0引用数: 0
h-index: 0
机构:
Observ Carnegie Inst Washington, Pasadena, CA 91101 USAUniv Calif Santa Cruz, UCO Lick Observ, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95064 USA
McWilliam, A.
[2
]
机构:
[1] Univ Calif Santa Cruz, UCO Lick Observ, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95064 USA
[2] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA
来源:
CRAL-2010: A UNIVERSE OF DWARF GALAXIES
|
2011年
/
48卷
We present detailed chemical abundances of Fe, Ca and Ba for 17 globular clusters (GCs) in 5 Local Group dwarf galaxies: NGC 205, NGC 6822, WLM, the SMC and LMC. These abundances are part of a larger sample of over 20 individual elements measured in GCs in these galaxies using a new analysis method for high resolution, integrated light spectra. Our analysis also provides age and stellar population constraints. The existence of GCs in dwarf galaxies with a range of ages implies that there were episodes of rapid star formation (SF) throughout the history of these galaxies; the abundance ratios of these clusters suggest that the duration of these burst varied considerably from galaxy to galaxy. We find evolution of Fe, Ca, and Ba with age in the LMC, SMC, and NGC 6822 that is consistent with extended, lower-efficiency SF between bursts, with an increasing contribution of low-metallicity AGB ejecta at late times. Our sample of GCs in NGC 205 and WLM are predominantly old and metal-poor with high [Ca/Fe] ratios, implying that the early history of these galaxies was marked by consistently high SF rates.
机构:
Univ Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
Colucci, Janet E.
Bernstein, Rebecca A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
Bernstein, Rebecca A.
Cameron, Scott
论文数: 0引用数: 0
h-index: 0
机构:
Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
Cameron, Scott
McWilliam, Andrew
论文数: 0引用数: 0
h-index: 0
机构:
Observ Carnegie Inst Washington, Pasadena, CA 91101 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
McWilliam, Andrew
Cohen, Judith G.
论文数: 0引用数: 0
h-index: 0
机构:
CALTECH, Palomar Observ, Pasadena, CA 91125 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
机构:
Univ Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Univ Sao Paulo, Inst Astron & Geofis, BR-05508900 Sao Paulo, BrazilUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Pompeia, L.
Hill, V.
论文数: 0引用数: 0
h-index: 0
机构:
GEPI, Observ Paris Meudon, F-92195 Meudon, France
CNRS, UMR 8111, F-92195 Meudon, FranceUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Hill, V.
Spite, M.
论文数: 0引用数: 0
h-index: 0
机构:
GEPI, Observ Paris Meudon, F-92195 Meudon, France
CNRS, UMR 8111, F-92195 Meudon, FranceUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Spite, M.
Cole, A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tasmania, Sch Math & Phys, Hobart, Tas 7001, Australia
Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, NetherlandsUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Cole, A.
Primas, F.
论文数: 0引用数: 0
h-index: 0
机构:
European So Observ, D-85748 Munich, GermanyUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Primas, F.
Romaniello, M.
论文数: 0引用数: 0
h-index: 0
机构:
European So Observ, D-85748 Munich, GermanyUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Romaniello, M.
Pasquini, L.
论文数: 0引用数: 0
h-index: 0
机构:
European So Observ, D-85748 Munich, GermanyUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Pasquini, L.
Cioni, M. -R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Edinburgh, Sch Phys, Edinburg SUPA, IfA, Edinburgh EH9 3HJ, Midlothian, ScotlandUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Cioni, M. -R.
Hane, T. Smecker
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USAUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
机构:
Univ Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
Colucci, Janet E.
Bernstein, Rebecca A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
Bernstein, Rebecca A.
Cameron, Scott
论文数: 0引用数: 0
h-index: 0
机构:
Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
Cameron, Scott
McWilliam, Andrew
论文数: 0引用数: 0
h-index: 0
机构:
Observ Carnegie Inst Washington, Pasadena, CA 91101 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
McWilliam, Andrew
Cohen, Judith G.
论文数: 0引用数: 0
h-index: 0
机构:
CALTECH, Palomar Observ, Pasadena, CA 91125 USAUniv Calif Santa Cruz, UCO, Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA
机构:
Univ Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Univ Sao Paulo, Inst Astron & Geofis, BR-05508900 Sao Paulo, BrazilUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Pompeia, L.
Hill, V.
论文数: 0引用数: 0
h-index: 0
机构:
GEPI, Observ Paris Meudon, F-92195 Meudon, France
CNRS, UMR 8111, F-92195 Meudon, FranceUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Hill, V.
Spite, M.
论文数: 0引用数: 0
h-index: 0
机构:
GEPI, Observ Paris Meudon, F-92195 Meudon, France
CNRS, UMR 8111, F-92195 Meudon, FranceUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Spite, M.
Cole, A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Tasmania, Sch Math & Phys, Hobart, Tas 7001, Australia
Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, NetherlandsUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Cole, A.
Primas, F.
论文数: 0引用数: 0
h-index: 0
机构:
European So Observ, D-85748 Munich, GermanyUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Primas, F.
Romaniello, M.
论文数: 0引用数: 0
h-index: 0
机构:
European So Observ, D-85748 Munich, GermanyUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Romaniello, M.
Pasquini, L.
论文数: 0引用数: 0
h-index: 0
机构:
European So Observ, D-85748 Munich, GermanyUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Pasquini, L.
Cioni, M. -R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Edinburgh, Sch Phys, Edinburg SUPA, IfA, Edinburgh EH9 3HJ, Midlothian, ScotlandUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil
Cioni, M. -R.
Hane, T. Smecker
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USAUniv Vale Paraiba, IP&D, BR-12244000 Sao Jose Dos Campos, SP, Brazil