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The Korean Astronomical Society (한국천문학회)
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THE GALACTIC-SCALE MOLECULAR OUTFLOWS IN STARBURST GALAXIES NGC 2146 AND NGC 3628

  • Received : 2014.11.30
  • Accepted : 2015.06.30
  • Published : 2015.09.30
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Abstract

Starburst galaxies have strong star formation activity and generate large scale outflows which eject a huge amount of gas mass. This process affects galaxy activity, and therefore, the detailed study of nearby starburst galaxies could provide valuable information for the study of distant ones. So far there have been only a few studies of galactic-scale molecular outflows due to the sensitivity limitation of telescopes. Our study provides two nearby examples, NGC 2146 and NGC 3628. We used Nobeyama Millimeter Array (NMA) CO(1-0) data, Chandra soft X-ray data, and NMA 3 mm data to study the kinematics of molecular outflows, their interaction with ionized outflows, and the star forming activity in the starburst region. We found that the gas ejected through molecular outflows is much more significant than that used to form stars.

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References

  1. Alatalo, K., Blitz, L., & Young, L. M., et al., 2011, Discovery of an Active Galactic Nucleus Driven Molecular Outflow in the Local Early-type Galaxy NGC 1266, ApJ, 735, 88 https://doi.org/10.1088/0004-637X/735/2/88
  2. Armus, L., Heckman, T. M., Weaver, K. A., & Lehnert, M. D., 1995, ROSAT Observations of NGC 2146: Evidence for a Starburst-driven Superwind, ApJ, 445, 666 https://doi.org/10.1086/175729
  3. Chung, A., Yun, M. S., & Naraynan, G., et al., 2011, Evidence for 1000 km s-1 Molecular Outflows in the Local ULIRG Population, ApJL, 732, 15 https://doi.org/10.1088/0004-637X/732/1/15
  4. Condon, J. J., Condon, M. A., Gisler, G., & Puschell, J. J., 1982, Strong Radio Sources in Bright Spiral Galaxies. II - Rapid Star Formation and Galaxy-galaxy Interaction, ApJ, 252, 102 https://doi.org/10.1086/159538
  5. Condon, J. J., 1992, Radio Emission from Normal Galaxies, ARA&A, 30, 575 https://doi.org/10.1146/annurev.aa.30.090192.003043
  6. Della Ceca, R., Griffiths, R. E., & Heckman, T. M., et al., 1999, ASCA Observations of the Starburst-driven Super-wind Galaxy NGC 2146: Broadband (0.6-9 KEV) Spectral Properties, ApJ, 514, 772 https://doi.org/10.1086/306984
  7. Inui, T., Matsumoto, H., & Tsuru, T. G., et al., 2005, Chandra Observation of the Starburst Galaxy NGC 2146, PASJ, 57, 135 https://doi.org/10.1093/pasj/57.1.135
  8. Irwin, J. A. & Sofue, Y., 1996, NGC 3628: The Nuclear Molecular Disk and Expanding Molecular Shells, ApJ, 464, 738 https://doi.org/10.1086/177360
  9. Kenninutt, R. C., Jr., 1998, Star Formation in Galaxies Along the Hubble Sequence, ARA&A, 36, 189 https://doi.org/10.1146/annurev.astro.36.1.189
  10. Matsushita, S., Kawabe, R., & Matsumoto, H., et al., 2000, Formation of a Massive Black Hole at the Center of the Superbubble in M82, ApJ, 545, 107 https://doi.org/10.1086/317791
  11. Matsushita, S., Kawabe, R., & Kohno, K., et al., 2005, Star-burst at the Expanding Molecular Superbubble in M82:Self-induced Starburst at the Inner Edge of the Super-bubble, ApJ, 618, 712 https://doi.org/10.1086/425408
  12. Nakai, N., Hayashi, M., & Handa, T., et al., 1987, A Nuclear Molecular Ring and Gas Outflow in the Galaxy M82, PASJ, 39, 685
  13. Sakamoto, K., Aalto, S., & Wilner, D. J., et al., 2009, P Cygni Profiles of Molecular Lines Toward Arp 220 Nuclei, ApJL, 700, 104 https://doi.org/10.1088/0004-637X/700/2/L104
  14. Sanders, D. B., Mazzarella, J. M., & Kim, D. -C., et al., 2003, The IRAS Revised Bright Galaxy Sample, AJ, 126, 1607 https://doi.org/10.1086/376841
  15. Strickland, D. K., Colbert, E. J. M., & Heckman, T. M., 2001, Another Intermediate-Mass Black Hole in a Star-burst Galaxy? The Luminous X-Ray Source in NGC 3628 Reappears, ApJ, 560, 707 https://doi.org/10.1086/323055
  16. Strickland, D. K., Heckman, T. M., & Colbert, E. J. M., et al., 2005, A High Spatial Resolution X-Ray and $H{\alpha}$ Study of Hot Gas in the Halos of Star-forming Disk Galaxies. II. Quantifying Supernova Feedback, ApJ, 606, 829
  17. Tsai, A. -L., Matsushita, S., & Nakanishi, K., et al., 2009, Molecular Superbubbles and Outflows from the Starburst Galaxy NGC 2146, PASJ, 61, 237 https://doi.org/10.1093/pasj/61.2.237
  18. Tsai, A. -L., Matsushita, S., & Kong, A. K. H., et al., 2012, First Detection of a Subkiloparsec Scale Molecular Outflow in the Starburst Galaxy NGC 3628, ApJ, 752, 38 https://doi.org/10.1088/0004-637X/752/1/38
  19. Tully, R. B., 1988, Nearby Galaxeis Catalog, Cambridge:Cambridge University Press