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Radio Recombination Line (RRL) survey from the HI Parkes All-sky Survey (HIPASS)
This 1.4 GHz Radio Recombination Line survey (H168α, H167α and H166α) of the Galactic Plane covering the region l=196°-0°-52° and |b|<5° has been obtained with the HI-Parkes All-sky survey (HIPASS) and associated Zone of Avoidance survey.
This free-free emission map has been derived from the line-integrated RRL emission, assuming an electron temperature gradient with Galactocentric radius of 496 K/kpc. The angular resolution of the maps are 14.4'.
Units of the RRL integrated and free-free emission maps are Kelvin (brightness temperature) and K km/s.
References
- 'Diffuse radio recombination line emission on the Galactic plane between l = 36° and 44°' by Alves, M. I. R., et al, 2010, MNRAS, 405, 1654 http://adsabs.harvard.edu/abs/2010MNRAS.405.1654A
- 'A derivation of the free-free emission on the Galactic plane between ℓ= 20° and 44°' by Alves, M. I. R., et al., MNRAS? 422, 2429 http://adsabs.harvard.edu/abs/2012MNRAS.422.2429A
- 'The HIPASS survey of the Galactic plane in radio recombination lines', by Alves, M. I. R., et al, 2015, MNRAS, 450, 2025 http://adsabs.harvard.edu/abs/2015MNRAS.450.2025A