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Dwarf Galaxies: Keys to Galaxy Formation and Evolution pp 231–234Cite as

Wolf-Rayet Galaxies in SDSS DR7

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Abstract

We analyze spectra of blue compact dwarf galaxies from the Sloan Digital Sky Survey Data Release 7 with Hβλ4861 fluxes exceeding 10−14 erg s−1 cm−2. Nearly all galaxies in our sample show broad Wolf-Rayet (WR) emission in the blue region of the spectrum (the blue bump) consisting of an unresolved blend of NIII λ4640, HeII λ4686 emission lines. Broad CIV λ5808 emission (the red bump) is also detected in a few galaxies. We derive the numbers of early WC (WCE) and late WN (WNL) stars from the luminosities of the red and blue bumps, and the number of O stars from the luminosity of the Hβ emission line and compare the relative number of WR stars N(WR)/N(O+WR) with predictions from evolutionary synthesis models.

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References

  1. Abazajian, K.N., Adelman-McCarthy, J.K., et al.: The seventh data release of the Sloan Digital Sky Survey. ApJS 182, 543–558 (2009)

    Article  ADS  Google Scholar 

  2. Abbott, D.C.: The theory of radiatively driven stellar winds. II - The line acceleration. ApJ 259, 282–301 (1982)

    Google Scholar 

  3. Allen, D.A., Wright, A.E., Goss, W.M.: The dwarf emission galaxy He2-10. MNRAS 177, 91–97 (1976)

    ADS  Google Scholar 

  4. Conti, P.S.: Wolf-Rayet galaxies - an introduction and a catalog. ApJ 377, 115–125 (1991)

    Article  ADS  Google Scholar 

  5. Crowther, P.A.: Physical properties of Wolf-Rayet stars. ARA&A 45, 177–219 (2007)

    Google Scholar 

  6. Guseva, N.G., Izotov, Y.I., Thuan, T.X.: A spectroscopic study of a large sample of Wolf-Rayet galaxies. ApJ 370, 194–196 (2000)

    Google Scholar 

  7. Izotov, Y.I., et al: The chemical composition of metal-poor emission-line galaxies in the Data Release 3 of the Sloan Digital Sky Survey. A&A 448, 955–970 (2006)

    Article  ADS  Google Scholar 

  8. Maeder, A.: The most massive stars evolving to red supergiants - Evolution with mass loss, WR stars as post-red supergiants and pre-supernovae. A&A 99, 97–107 (1981)

    Google Scholar 

  9. Maeder, A., Meynet, G.: New models of Wolf-Rayet stars and comparison with data in galaxies. A&A 287, 803–816 (1994)

    ADS  Google Scholar 

  10. Massey, P., Johnson, O.: Evolved massive stars in the Local Group. II. A new survey for Wolf-Rayet Stars in M33 and its implications for massive star evolution: evidence of the “Conti Scenario” in Action. ApJ 505, 793–827 (1998)

    Google Scholar 

  11. Meynet, G.: Wolf-Rayet population syntheses for starburst galaxies. A&A 298, 767 (1995)

    ADS  Google Scholar 

  12. Meynet, G., Maeder, A.: Stellar evolution with rotation. XI. Wolf-Rayet star populations at different metallicities. A&A 429, 581–598 (2005)

    Google Scholar 

  13. Pilyugin, L.S., Mattsson, L.: Abundance determination in HII regions from spectra without the [OII]3727+3729 line ARXIV, arXiv:1011.1431 (2010)

    Google Scholar 

  14. Schaerer, D., Vacca, W.D.: New models for Wolf-Rayet and O Star populations in young starbursts. ApJ 497, 618 (1998)

    Article  ADS  Google Scholar 

  15. Schaerer, D., Contini, T., Kunth, D.: Populations of WC and WN stars in Wolf-Rayet galaxies. A&A 341, 399–417 (1999)

    ADS  Google Scholar 

  16. Woodward, P.R.: Theoretical models of star formation. ARA&A 16, 555–584 (1978)

    Google Scholar 

  17. Woosley, S.E., Bloom, J.S.: The supernova Gamma-Ray burst connection. ARA&A 44, 507–556 (2006)

    Google Scholar 

  18. Woosley, S.E., Heger, A.: The progenitor stars of Gamma-Ray bursts. ApJ 637, 914–921 (2006)

    Article  ADS  Google Scholar 

Download references

Acknowledgements

The author warmly thanks the Organizing Committee for its kind hospitality and the European Astronomical Society for partial financial support. This work was partially supported by the Cosmomicrophysics program of the National Academy of Sciences and the National Space Agency of Ukraine.

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Authors and Affiliations

  1. Main Astronomical Observatory NAS Ukraine, Ak. Zabolotnoho St. 27, 03680, Kyiv, Ukraine

    Kateryna Agiienko

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  1. Kateryna Agiienko
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Correspondence to Kateryna Agiienko .

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Editors and Affiliations

  1. , Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, Porto, 4150-762, Portugal

    Polychronis Papaderos

  2. , Institute of Astronomy, University of Vienna, Türkenschanzstr. 17, Vienna, 1180, Austria

    Simone Recchi

  3. , Institute of Astronomy, University of Vienna, Türkenschanzstr. 17, Vienna, 1180, Austria

    Gerhard Hensler

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Agiienko, K. (2012). Wolf-Rayet Galaxies in SDSS DR7. In: Papaderos, P., Recchi, S., Hensler, G. (eds) Dwarf Galaxies: Keys to Galaxy Formation and Evolution. Astrophysics and Space Science Proceedings. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22018-0_26

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  • DOI: https://doi.org/10.1007/978-3-642-22018-0_26

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-22017-3

  • Online ISBN: 978-3-642-22018-0

  • eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)

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