The Discovery of Spiral Arms in the Starburst Galaxy M82

  title={The Discovery of Spiral Arms in the Starburst Galaxy M82},
  author={Y. D. Mayya and Luis Carrasco and A. Luna},
  journal={The Astrophysical Journal Letters},
  pages={L33 - L36}
We report the discovery of two symmetric spiral arms in the near-infrared (NIR) images of the starburst galaxy M82. The spiral arms are recovered when an axisymmetric exponential disk is subtracted from the NIR images. The arms emerge from the ends of the NIR bar and can be traced up to 3 disk scale lengths. The winding of the arms is consistent with an m = 2 logarithmic spiral mode of pitch angle 14°. The arms are bluer than the disk in spite of their detection on the NIR images. If the… 

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