Updated models for the creation of a low-Z QSO absorber by a dwarf galaxy wind

Keeney, Brian A.; Joeris, Peter; Stocke, John T.; Danforth, Charles W.

doi:10.1088/0004-6256/148/5/103

Title: Updated models for the creation of a low-Z QSO absorber by a dwarf galaxy wind

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Abstract

We present new GALEX images and optical spectroscopy of J1229+02, a dwarf post-starburst galaxy located 81 kpc from the 1585 km s{sup −1} absorber in the 3C 273 sight line. The absence of Hα emission and the faint GALEX UV fluxes confirm that the galaxy's recent star formation rate is <10{sup −3} M{sub ⊙} yr{sup −1}. Absorption-line strengths and the UV−optical SED give similar estimates of the acceptable model parameters for its youngest stellar population where f{sub m}<60% of its total stars (by mass) formed in a burst t{sub sb}=0.7–3.4 Gyr ago with a stellar metallicity of −1.7<[Fe/H]<+0.2; we also estimate the stellar mass of J1229+02 to be 7.3

Authors:: Keeney, Brian A.; Joeris, Peter; Stocke, John T.; Danforth, Charles W.

Publication Date:: Sat Nov 01 00:00:00 EDT 2014

OSTI Identifier:: 22342182

Resource Type:: Journal Article

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

Additional Journal Information:: Journal Volume: 148; Journal Issue: 5; 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; ABSORPTION; DATA; EMISSION; EVOLUTION; GALAXIES; IMAGES; IMPACT PARAMETER; MASS; METALLICITY; METALS; QUASARS; SPECTROSCOPY; STARS; STELLAR WINDS; VELOCITY

Citation Formats


                    Keeney, Brian A., Joeris, Peter, Stocke, John T., Danforth, Charles W., and Levesque, Emily M., E-mail: brian.keeney@colorado.edu. Updated models for the creation of a low-Z QSO absorber by a dwarf galaxy wind.  United States: N. p., 2014. 
        Web.  doi:10.1088/0004-6256/148/5/103.

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                    Keeney, Brian A., Joeris, Peter, Stocke, John T., Danforth, Charles W., & Levesque, Emily M., E-mail: brian.keeney@colorado.edu. Updated models for the creation of a low-Z QSO absorber by a dwarf galaxy wind.  United States.  https://doi.org/10.1088/0004-6256/148/5/103

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                    Keeney, Brian A., Joeris, Peter, Stocke, John T., Danforth, Charles W., and Levesque, Emily M., E-mail: brian.keeney@colorado.edu. 2014.  
        "Updated models for the creation of a low-Z QSO absorber by a dwarf galaxy wind".  United States.  https://doi.org/10.1088/0004-6256/148/5/103.

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@article{osti_22342182,

  title        = {Updated models for the creation of a low-Z QSO absorber by a dwarf galaxy wind},

  author       = {Keeney, Brian A. and Joeris, Peter and Stocke, John T. and Danforth, Charles W. and Levesque, Emily M., E-mail: brian.keeney@colorado.edu},

  abstractNote = {We present new GALEX images and optical spectroscopy of J1229+02, a dwarf post-starburst galaxy located 81 kpc from the 1585 km s{sup −1} absorber in the 3C 273 sight line. The absence of Hα emission and the faint GALEX UV fluxes confirm that the galaxy's recent star formation rate is <10{sup −3} M{sub ⊙} yr{sup −1}. Absorption-line strengths and the UV−optical SED give similar estimates of the acceptable model parameters for its youngest stellar population where f{sub m}<60% of its total stars (by mass) formed in a burst t{sub sb}=0.7–3.4 Gyr ago with a stellar metallicity of −1.7<[Fe/H]<+0.2; we also estimate the stellar mass of J1229+02 to be 7.3},

  doi          = {10.1088/0004-6256/148/5/103},

  url          = {https://www.osti.gov/biblio/22342182},
  journal      = {Astronomical Journal (New York, N.Y. Online)},

  issn         = {1538-3881},

  number       = 5,

  volume       = 148,

  place        = {United States},

  year         = {Sat Nov 01 00:00:00 EDT 2014},

  month        = {Sat Nov 01 00:00:00 EDT 2014}

}

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