Ultra Low Dispersion Spectroscopy with Gaia and Astronomical Slitless Surveys

Acta Polytechnica

R. Hudec¹  L. Hudec¹  M. Klíma¹ 

关键词: astronomical spectroscopy;    low dispersion spectroscopy;    slitless spectroscopy;    Gaia;   

DOI  :  

来源: Czech Technical University in Prague, Faculty of M

【 摘 要 】

The ultra-low dispersion spectroscopy to be applied in the ESA Gaia space observatory and the ground-based objective-prism plate surveys represent a similar type of astrophysical data. Although the dispersion in plate surveys is usually larger than in the Gaia blue and red photometers (BP/RP), the spectral resolutions differ by a factor of 2–3 only, since the resolution in ground-based spectra is seeing-limited. We argue that some of the algorithms developed for digitized objective-prism plates can also be applied for the Gaia spectra. At the same time, the plate results confirm the feasibility of observing strong emission lines with Gaia RP/BP.

【 授权许可】

Unknown