ELEMENT DISTRIBUTIONS IN THE CRAB NEBULA

Satterfield, Timothy J; Katz, Andrea M; Sibley, Adam R; MacAlpine, Gordon M; Uomoto, Alan

doi:10.1088/0004-6256/144/1/27

Title: ELEMENT DISTRIBUTIONS IN THE CRAB NEBULA

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Abstract

Images of the Crab Nebula have been obtained through custom interference filters that transmit emission from the expanding supernova remnant in He II {lambda}4686, H{beta}, He I {lambda}5876, [O I] {lambda}{lambda}6300, 6364, [N II] {lambda}{lambda}6548, 6583, [S II] {lambda}{lambda}6716, 6731, [S III] {lambda}9069, and [C I] {lambda}{lambda}9823, 9850. We present both raw and flux-calibrated emission-line images. Arrays of 19,440 photoionization models, with extensive input abundance ranges, were matched pixel by pixel to the calibrated data in order to derive corresponding element abundance or mass-fraction distributions for helium, carbon, nitrogen, oxygen, and sulfur. These maps show distinctive structure, and they illustrate regions of gas in which various stages of nucleosynthesis have apparently occurred, including the CNO cycle, helium burning, carbon burning, and oxygen burning. It is hoped that the calibrated observations and chemical abundance distribution maps will be useful for developing a better understanding of the precursor star evolution and the supernova explosive process.

Authors:

Satterfield, Timothy J; Katz, Andrea M; Sibley, Adam R; MacAlpine, Gordon M ^[1]; Uomoto, Alan ^[2]

Department of Physics and Astronomy, Trinity University, San Antonio, TX 78212 (United States)
Carnegie Institution for Science, The Observatories, Pasadena, CA 91101 (United States)

Publication Date:: Sun Jul 15 00:00:00 EDT 2012

OSTI Identifier:: 22034412

Resource Type:: Journal Article

Journal Name:: Astronomical Journal (New York, N.Y. Online)

Additional Journal Information:: Journal Volume: 144; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ASTROPHYSICS; CARBON; CARBON BURNING; CNO CYCLE; CRAB NEBULA; ELEMENT ABUNDANCE; HELIUM; HELIUM BURNING; IMAGES; NITROGEN; NUCLEOSYNTHESIS; OXYGEN; PHOTOIONIZATION; PHOTON EMISSION; SPATIAL DISTRIBUTION; STAR EVOLUTION; SULFUR; SUPERNOVAE

Citation Formats


                    Satterfield, Timothy J, Katz, Andrea M, Sibley, Adam R, MacAlpine, Gordon M, and Uomoto, Alan. ELEMENT DISTRIBUTIONS IN THE CRAB NEBULA.  United States: N. p., 2012. 
        Web.  doi:10.1088/0004-6256/144/1/27.

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                    Satterfield, Timothy J, Katz, Andrea M, Sibley, Adam R, MacAlpine, Gordon M, & Uomoto, Alan. ELEMENT DISTRIBUTIONS IN THE CRAB NEBULA.  United States.  https://doi.org/10.1088/0004-6256/144/1/27

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                    Satterfield, Timothy J, Katz, Andrea M, Sibley, Adam R, MacAlpine, Gordon M, and Uomoto, Alan. 2012.  
        "ELEMENT DISTRIBUTIONS IN THE CRAB NEBULA".  United States.  https://doi.org/10.1088/0004-6256/144/1/27.

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@article{osti_22034412,

  title        = {ELEMENT DISTRIBUTIONS IN THE CRAB NEBULA},

  author       = {Satterfield, Timothy J and Katz, Andrea M and Sibley, Adam R and MacAlpine, Gordon M and Uomoto, Alan},

  abstractNote = {Images of the Crab Nebula have been obtained through custom interference filters that transmit emission from the expanding supernova remnant in He II {lambda}4686, H{beta}, He I {lambda}5876, [O I] {lambda}{lambda}6300, 6364, [N II] {lambda}{lambda}6548, 6583, [S II] {lambda}{lambda}6716, 6731, [S III] {lambda}9069, and [C I] {lambda}{lambda}9823, 9850. We present both raw and flux-calibrated emission-line images. Arrays of 19,440 photoionization models, with extensive input abundance ranges, were matched pixel by pixel to the calibrated data in order to derive corresponding element abundance or mass-fraction distributions for helium, carbon, nitrogen, oxygen, and sulfur. These maps show distinctive structure, and they illustrate regions of gas in which various stages of nucleosynthesis have apparently occurred, including the CNO cycle, helium burning, carbon burning, and oxygen burning. It is hoped that the calibrated observations and chemical abundance distribution maps will be useful for developing a better understanding of the precursor star evolution and the supernova explosive process.},

  doi          = {10.1088/0004-6256/144/1/27},

  url          = {https://www.osti.gov/biblio/22034412},
  journal      = {Astronomical Journal (New York, N.Y. Online)},

  issn         = {1538-3881},

  number       = 1,

  volume       = 144,

  place        = {United States},

  year         = {Sun Jul 15 00:00:00 EDT 2012},

  month        = {Sun Jul 15 00:00:00 EDT 2012}

}

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