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Exploring the chemical link between local ellipticals and their high-redshift progenitors

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Abstract
We present Keck/MOSFIRE K-band spectroscopy of the first mass-selected sample of galaxies at z similar to 2.3. Targets are selected from the 3D-Hubble Space Telescope Treasury survey. The six detected galaxies have a mean [N II]lambda 6584/H alpha ratio of 0.27 +/- 0.01, with a small standard deviation of 0.05. This mean value is similar to that of UV-selected galaxies of the same mass. The mean gas-phase oxygen abundance inferred from the [N II]/H alpha ratios depends on the calibration method, and ranges from 12+log(O/H)(gas) = 8.57 for the Pettini & Pagel calibration to 12+log(O/H)(gas) = 8.87 for the Maiolino et al. calibration. Measurements of the stellar oxygen abundance in nearby quiescent galaxies with the same number density indicate 12+log(O/H)(stars) = 8.95, similar to the gas-phase abundances of the z similar to 2.3 galaxies if the Maiolino et al. calibration is used. This suggests that these high-redshift star forming galaxies may be progenitors of today's massive early-type galaxies. The main uncertainties are the absolute calibration of the gas-phase oxygen abundance and the incompleteness of the z similar to 2.3 sample: the galaxies with detected Ha tend to be larger and have higher star formation rates than the galaxies without detected Ha, and we may still be missing the most dust-obscured progenitors.
Keywords
Space and Planetary Science, Astronomy and Astrophysics, galaxies: abundances, galaxies: evolution, MASS-METALLICITY RELATION, STAR-FORMING GALAXIES, SIMILAR-TO 2.5, HII-REGIONS, STELLAR, EVOLUTION, ABUNDANCES, SPECTROSCOPY, ORIGIN, FIELD

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MLA
Leja, Joel, et al. “Exploring the Chemical Link between Local Ellipticals and Their High-Redshift Progenitors.” ASTROPHYSICAL JOURNAL LETTERS, vol. 778, no. 2, 2013, doi:10.1088/2041-8205/778/2/l24.
APA
Leja, J., van Dokkum, P. G., Momcheva, I., Brammer, G., Skelton, R. E., Whitaker, K. E., … Patel, S. G. (2013). Exploring the chemical link between local ellipticals and their high-redshift progenitors. ASTROPHYSICAL JOURNAL LETTERS, 778(2). https://doi.org/10.1088/2041-8205/778/2/l24
Chicago author-date
Leja, Joel, Pieter G. van Dokkum, Ivelina Momcheva, Gabriel Brammer, Rosalind E. Skelton, Katherine E. Whitaker, Brett H. Andrews, et al. 2013. “Exploring the Chemical Link between Local Ellipticals and Their High-Redshift Progenitors.” ASTROPHYSICAL JOURNAL LETTERS 778 (2). https://doi.org/10.1088/2041-8205/778/2/l24.
Chicago author-date (all authors)
Leja, Joel, Pieter G. van Dokkum, Ivelina Momcheva, Gabriel Brammer, Rosalind E. Skelton, Katherine E. Whitaker, Brett H. Andrews, Marijn Franx, Mariska Kriek, Arjen van der Wel, Rachel Bezanson, Charlie Conroy, Natascha Förster Schreiber, Erica Nelson, and Shannon G. Patel. 2013. “Exploring the Chemical Link between Local Ellipticals and Their High-Redshift Progenitors.” ASTROPHYSICAL JOURNAL LETTERS 778 (2). doi:10.1088/2041-8205/778/2/l24.
Vancouver
1.
Leja J, van Dokkum PG, Momcheva I, Brammer G, Skelton RE, Whitaker KE, et al. Exploring the chemical link between local ellipticals and their high-redshift progenitors. ASTROPHYSICAL JOURNAL LETTERS. 2013;778(2).
IEEE
[1]
J. Leja et al., “Exploring the chemical link between local ellipticals and their high-redshift progenitors,” ASTROPHYSICAL JOURNAL LETTERS, vol. 778, no. 2, 2013.
@article{8677251,
  abstract     = {{We present Keck/MOSFIRE K-band spectroscopy of the first mass-selected sample of galaxies at z similar to 2.3. Targets are selected from the 3D-Hubble Space Telescope Treasury survey. The six detected galaxies have a mean [N II]lambda 6584/H alpha ratio of 0.27 +/- 0.01, with a small standard deviation of 0.05. This mean value is similar to that of UV-selected galaxies of the same mass. The mean gas-phase oxygen abundance inferred from the [N II]/H alpha ratios depends on the calibration method, and ranges from 12+log(O/H)(gas) = 8.57 for the Pettini & Pagel calibration to 12+log(O/H)(gas) = 8.87 for the Maiolino et al. calibration. Measurements of the stellar oxygen abundance in nearby quiescent galaxies with the same number density indicate 12+log(O/H)(stars) = 8.95, similar to the gas-phase abundances of the z similar to 2.3 galaxies if the Maiolino et al. calibration is used. This suggests that these high-redshift star forming galaxies may be progenitors of today's massive early-type galaxies. The main uncertainties are the absolute calibration of the gas-phase oxygen abundance and the incompleteness of the z similar to 2.3 sample: the galaxies with detected Ha tend to be larger and have higher star formation rates than the galaxies without detected Ha, and we may still be missing the most dust-obscured progenitors.}},
  articleno    = {{L24}},
  author       = {{Leja, Joel and van Dokkum, Pieter G. and Momcheva, Ivelina and Brammer, Gabriel and Skelton, Rosalind E. and Whitaker, Katherine E. and Andrews, Brett H. and Franx, Marijn and Kriek, Mariska and van der Wel, Arjen and Bezanson, Rachel and Conroy, Charlie and Förster Schreiber, Natascha and Nelson, Erica and Patel, Shannon G.}},
  issn         = {{2041-8205}},
  journal      = {{ASTROPHYSICAL JOURNAL LETTERS}},
  keywords     = {{Space and Planetary Science,Astronomy and Astrophysics,galaxies: abundances,galaxies: evolution,MASS-METALLICITY RELATION,STAR-FORMING GALAXIES,SIMILAR-TO 2.5,HII-REGIONS,STELLAR,EVOLUTION,ABUNDANCES,SPECTROSCOPY,ORIGIN,FIELD}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{7}},
  title        = {{Exploring the chemical link between local ellipticals and their high-redshift progenitors}},
  url          = {{http://dx.doi.org/10.1088/2041-8205/778/2/l24}},
  volume       = {{778}},
  year         = {{2013}},
}

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