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Josh Peek edited section_Data_subsection_New_Observations__.tex
almost 8 years ago
Commit id: 266f3636842f6fecf3e985a266dfb33a3b9d982f
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%Unfortunately, a combination of poor weather and failures of the FLAMES instrument limited our observing time to 4.5 hours of clear weather data.
The GIRAFFE High Resolution mode was used in the H395.8 setup (HR02), which gives access to the 385.4 to 404.9nm wavelength range in the near UV at a spectral resolving power $\lambda / \delta \lambda$ of 22,700. A total of 4.5 h of integration were obtained, split in 3 exposures of 90 min. Given that most of the program targets were faint, the non-standard 50 khz,1×1, high gain readout mode was used \cite{2008Msngr.133...17M}. Corresponding
bias, dark, flats and arc calibration frames were obtained within 24h of the science observations. The raw scientific data were bias- and dark-subtracted, flat-fielded and wavelength calibrated using the instrument's Common Pipeline Library v12.14.2 under the esorex environment. The source spectra were extracted in the SUM mode. Finally the individual exposures were summed up to improve the signal-to-noise ratio of the extracted data.
%While we observed many targets with FLAMES, this work will focus on a single target, USNO-A0600-15865535, for which we acheived a signal to noise of X.