DOI :10.26650/PB/PS01.2021.001.004   IUP :10.26650/PB/PS01.2021.001.004    Full Text (PDF)

RVS Spectra of Gaia Photometric Science Alerts

George SeabrokeMark CropperSteven BakerKevin BensonChris DoldıngMike SmithArancha DelgadoSimon HodgkinDiana HarrisonGuy RixonLukasz Wyrzykowski

Gaia Photometric Science Alerts (GPSA) publishes Gaia G magnitudes and Blue Photometer (BP) and Red Photometer (RP) low-resolution epoch spectra of transient events. 27 high-resolution spectra from Gaia’s Radial Velocity Spectrometer (RVS) of 12 GPSAs have also been published. These 27 RVS epoch spectra are presented next to their corresponding BP and RP epoch spectra in a single place for the first time. We also present one new RVS spectrum of a 13th GPSA that could not be published by the GPSA system. Of the 13 GPSA with RVS spectra, five are photometrically classified as unknown, five as supernovae (three as SN Ia, one as SN II, one as SN IIP), one as a cataclysmic variable, one as a binary microlensing event and one as a young stellar object. The five GPSAs classified as unknown are potential scientific opportunities, while all of them are a preview of the epoch RVS spectra that will be published in Gaia’s fourth data release.


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