SPLASH - The Southern Parkes Large-Area Survey in Hydroxyl


Welcome to the SPLASH homepage!

SPLASH (The Southern Parkes Large-Area Survey in Hydroxyl) is a sensitive, unbiased single-dish survey of the Southern Galactic Plane in all four ground-state transitions of hydroxyl (OH) at 1612, 1665, 1667 and 1720 MHz, and the radio continuum emisson at 1612, 1666 and 1720 MHz. It uses the Parkes "Murriyang" radio telescope, and maser sources were later followed up with the Australia Telescope Compact Array.

The first public data release is described in Dawson et al. (2022, MNRAS in press) and is available for download via AAO Data Central.

Left: Top-down survey coverage map. Right: Combined peak emission/absorption maps for all four transitions, showing the most extreme value of the brightness temperature at each spatial position. The sense of the emission and absorption encodes information about the physical state of the gas.

Last modified 10th March 2022