Skip to main content Accessibility help
×
Home

AKARI observations of the multiphase intergalactic medium of Stephan's Quintet

  • Toyoaki Suzuki (a1), Hidehiro Kaneda (a2), Takashi Onaka (a3) and Tetsu Kitayama (a4)

Abstract

Stephan's Quintet (SQ, HCG92) is a well studied compact group of galaxies with a disturbed intergalactic medium (IGM). An “intruder” galaxy NGC 7318b is currently colliding with the IGM at a relative velocity of 1000 km s−1, causing a large-scale shock front. We observed SQ with the Far-Infrared Surveyor (FIS) aboard AKARI in four far-infrared (far-IR) bands at 65, 90, 140, and 160μm. The 160μm image clearly shows an additional peak of emission overlying structure extending in the North-South direction along the shock ridge seen in the 140μm band, and in H2 and X-ray emission. Whereas most of the far-IR emission in the shocked region is from cold dust (20 K), the [CII]158μm emission - whose luminosity is comparable to that of the warm H2 gas - can significantly contribute to the single peak emission in the 160μm band. We conclude that the [CII] line emission comes from the warm H2 gas in the shock. Our result represents the first detection of shock-excited [CII] line emission.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      AKARI observations of the multiphase intergalactic medium of Stephan's Quintet
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      AKARI observations of the multiphase intergalactic medium of Stephan's Quintet
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      AKARI observations of the multiphase intergalactic medium of Stephan's Quintet
      Available formats
      ×

Copyright

References

Hide All
Allen, R. J. & Hartsuiker, J. W. 1972, Nature, 239, 324
Appleton, P. N. et al. 2006, Ap. Lett., 639, L51.
Boselli, A., Gavazzi, G., Lequeux, J., & Pierini, D. 2002, A&A, 385, 454
Cardelli, J. A., Meyer, D. M., Jura, M., & Savage, B. D. 1996, ApJ, 467, 334
Cluver, M. E. et al. 2010, ApJ, 710, 248
Hickson, P. 1982, ApJ, 255, 382
Hickson, P., Mendes de Oliveira, C., Huchra, J. P., & Palumbo, G. G. 1992, ApJ, 399, 353
Kawada, M. et al. 2007, PASJ, 59, 389
Langer, W. D., Velusamy, T., Pineda, J. L., Goldsmith, P. F., Li, D., & Yorke, H. W. 2010, A&A, 521L, 17L.
Murakami, H. et al. 2007, PASJ, 59, 369
Pietsch, W., Trinchieri, G., Arp, H., & Sulentic, J. W. 1997, A&A, 322, 89
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

AKARI observations of the multiphase intergalactic medium of Stephan's Quintet

  • Toyoaki Suzuki (a1), Hidehiro Kaneda (a2), Takashi Onaka (a3) and Tetsu Kitayama (a4)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed