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Gaia Photometric Data: DR1 results and DR2 expectations

  • Dafydd Wyn Evans (a1), Marco Riello (a1), Francesca De Angeli (a1), Giorgia Busso (a1), Floor van Leeuwen (a1), Laurent Eyer (a2), Carme Jordi (a3), Claus Fabricius (a3), Josep Manel Carrasco (a3), Michael Weiler (a3), Paolo Montegriffo (a4), Carla Cacciari (a4) and Elena Pancino (a5)...

Abstract

Gaia DR1 was released in September 2016 and contained a photometric catalogue of over 1 billion sources. At this stage, this only included mean G-band photometry and an estimate of the error. Even though this may sound limited in nature, interesting science can still be achieved with this data thanks to its quality. A high level overview of the photometric processing and some validation results will be presented. Additionally, epoch photometry in the G-band was released in Gaia DR1 for a small number of variable sources in the South Ecliptic Pole which covers the LMC. The second data release (Gaia DR2) is currently being prepared and, if available, some preliminary validation results will be presented. It is planned that this release will contain colour information in the form of integrated BP and RP photometry in addition to the latest G-band photometry.

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References

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Arenou, F., Luri, X., Babusiaux, C., et al. 2017 A&A, 599, A50
Carrasco, J. M., Evans, D. W., Montegriffo, P., et al. 2016 A&A, 595, A7
Clementini, G., Ripepi, V., Leccia, S., et al. 2016 A&A, 595, A133
Evans, D. W., Riello, M., De Angeli, F., et al. 2017 A&A, 600, A51
Eyer, L., Mowlavi, N., Evans, D. W., et al. 2017, arXiv:1702.03295
van Leeuwen, F., Evans, D. W., De Angeli, F., et al., 2017, A&A, 599, A32
Pancino, E., Altavilla, G., Marinoni, S., et al. 2012 MNRAS, 426, 1767
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