Murray Andrew - Gaia
Gaia was proposed in 1993 and since then, many people have been involved in the Gaia mission, whether at ESA, at industry side or at one of the institutes involved in the Gaia data processing. The Gaia Data Processing and Analysis Consortium (DPAC) is a collaboration which consists of around 450 scientists and engineers.
The list of Gaia contributors presented here should not be considered a complete representation of the entire consortium. A more complete list of Gaia contributors that were involved in the creation of the Gaia catalogues can be obtained from the author lists of the Gaia Collaboration papers (for Gaia Data Release 1 see here, for Gaia Data Release 2 see here, for Gaia Early Data Release 3 see here). A history of contributions to the Gaia mission can be found from the acknowledgements given with each data release.
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Andrew Murray (1926-2012)
On Wednesday 7 November Colin Andrew Murray, or Andrew as we knew him, passed away. Andrew played a crucial role in the early stages of the Hipparcos mission, ensuring a UK involvement in the data processing at the Royal Greenwich Observatory through the Northern Data Analysis Consortium. It is fair to say that many of us would not be where we are now without the early initiatives of Andrew concerning UK involvement in space astrometry. Working closely together with Andrew in the early 1980s was a great experience. Reaching a complete understanding of the processing of the Hipparcos data was paramount, and would lead on occasion to weeks of sorting out the last details in both description and implementation, to such extent that algorithms developed then did not require any changes or improvements throughout the Hipparcos reductions, including the later re-reduction.
One other way Andrew will remain with us for a long time to come is through his book Vectorial Astrometry, still a unique reference for the description of the reference frames we encounter in astrometric studies.
Andrew will be much missed, but his contributions to space astrometry live on.
Text: Floor van Leeuwen, IoA
Picture: Margaret Penston
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