NO HEAVY-ELEMENT DISPERSION IN THE GLOBULAR CLUSTER M92

doi:10.1088/2041-8205/740/2/L38

Title: NO HEAVY-ELEMENT DISPERSION IN THE GLOBULAR CLUSTER M92

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Abstract

Although there have been recent claims that there is a large dispersion in the abundances of the heavy neutron capture elements in the old Galactic globular cluster M92, we show that the measured dispersion for the absolute abundances of four of the rare earth elements within a sample of 12 luminous red giants in M92 ({<=}0.07 dex) does not exceed the relevant sources of uncertainty. As expected from previous studies, the heavy elements show the signature of the r-process. Their abundance ratios are essentially identical to those of M30, another nearby globular cluster of similar metallicity.

Authors:

Cohen, Judith G., E-mail: jlc@astro.caltech.edu ^[1]

Palomar Observatory, Mail Stop 249-17, California Institute of Technology, Pasadena, CA 91125 (United States)

Publication Date:: Thu Oct 20 00:00:00 EDT 2011

OSTI Identifier:: 21565379

Resource Type:: Journal Article

Journal Name:: Astrophysical Journal Letters

Additional Journal Information:: Journal Volume: 740; Journal Issue: 2; Other Information: DOI: 10.1088/2041-8205/740/2/L38; Journal ID: ISSN 2041-8205

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ELEMENT ABUNDANCE; GALAXY CLUSTERS; NEUTRON REACTIONS; RARE EARTHS; ABUNDANCE; BARYON REACTIONS; ELEMENTS; HADRON REACTIONS; METALS; NUCLEAR REACTIONS; NUCLEON REACTIONS

Citation Formats


                    Cohen, Judith G., E-mail: jlc@astro.caltech.edu. NO HEAVY-ELEMENT DISPERSION IN THE GLOBULAR CLUSTER M92.  United States: N. p., 2011. 
        Web.  doi:10.1088/2041-8205/740/2/L38.

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                    Cohen, Judith G., E-mail: jlc@astro.caltech.edu. NO HEAVY-ELEMENT DISPERSION IN THE GLOBULAR CLUSTER M92.  United States.  https://doi.org/10.1088/2041-8205/740/2/L38

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                    Cohen, Judith G., E-mail: jlc@astro.caltech.edu. 2011.  
        "NO HEAVY-ELEMENT DISPERSION IN THE GLOBULAR CLUSTER M92".  United States.  https://doi.org/10.1088/2041-8205/740/2/L38.

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@article{osti_21565379,

  title        = {NO HEAVY-ELEMENT DISPERSION IN THE GLOBULAR CLUSTER M92},

  author       = {Cohen, Judith G., E-mail: jlc@astro.caltech.edu},

  abstractNote = {Although there have been recent claims that there is a large dispersion in the abundances of the heavy neutron capture elements in the old Galactic globular cluster M92, we show that the measured dispersion for the absolute abundances of four of the rare earth elements within a sample of 12 luminous red giants in M92 ({<=}0.07 dex) does not exceed the relevant sources of uncertainty. As expected from previous studies, the heavy elements show the signature of the r-process. Their abundance ratios are essentially identical to those of M30, another nearby globular cluster of similar metallicity.},

  doi          = {10.1088/2041-8205/740/2/L38},

  url          = {https://www.osti.gov/biblio/21565379},
  journal      = {Astrophysical Journal Letters},

  issn         = {2041-8205},

  number       = 2,

  volume       = 740,

  place        = {United States},

  year         = {Thu Oct 20 00:00:00 EDT 2011},

  month        = {Thu Oct 20 00:00:00 EDT 2011}

}

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https://doi.org/10.1088/2041-8205/740/2/L38

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