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J/A+A/606/A13            QSO eHAQ0111+0641 spectra                (Fynbo+, 2017)

The High AV Quasar Survey: A z = 2.027 metal-rich damped Lyman-α absorber towards a red quasar at z = 3.21. Fynbo J.P.U., Krogager J.-K., Heintz K.E., Geier S., Moller P., Noterdaeme P., Christensen L., Ledoux C., Jakobsson P. <Astron. Astrophys. 606, A13 (2017)> =2017A&A...606A..13F (SIMBAD/NED BibCode)
ADC_Keywords: QSOs ; Spectra, infrared Keywords: quasars: general - quasars: absorption lines - quasars: individual: eHAQ0111+0641 Abstract: It is important to understand the selection effects behind the quasar samples to fully exploit the potential of quasars as probes of cosmic chemical evolution and the internal gas dynamics of galaxies; in particular, it is vital to understand whether the selection criteria exclude foreground galaxies with certain properties, most importantly a high dust content. Here we present spectroscopic follow-up from the 10.4m GTC telescope of a dust-reddened quasar, eHAQ0111+0641, from the extended High AV Quasar (HAQ) survey. We find that the z=3.21 quasar has a foreground damped Lyman-α absorber (DLA) at z=2.027 along the line of sight. The DLA has very strong metal lines due to a moderately high metallicity with an inferred lower limit of 25% of the solar metallicity, but a very large gas column density along the line of sight in its host galaxy. This discovery is further evidence that there is a dust bias affecting the census of metals, caused by the combined effect of dust obscuration and reddening, in existing samples of z>2 DLAs. The case of eHAQ0111+0641 illustrates that dust bias is not only caused by dust obscuration, but also dust reddening. Description: eHAQ0111+0641 was observed with the OSIRIS instrument at the Gran Telescopio Canarias (GTC) as part of a larger sample of candidate red quasars. We secured spectroscopy with OSIRIS and a range of grisms to better constrain the spectral energy distribution, metal lines, and hydrogen Lyα line. Objects: ----------------------------------------- RA (2000) DE Designation(s) ----------------------------------------- 01 11 34.71 +06 41 19.22 eHAQ0111+0641 ----------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 139 4 List of spectra sp/* 0 4 Individual fits spectra
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Nx Number of pixels along X-axis 6 I1 --- Ny Number of spectra 8- 30 A23 --- Obs.Date Observation date (YYYY-MM-DDThh:mm:ss.sss) 32- 38 F7.2 0.1nm blambda Lower valuer of spectral interval 40- 47 F8.2 0.1nm Blambda Upper valuer of spectral interval 49- 56 F8.6 0.1nm dlambda Spectral resolution 58- 59 I2 Kibyte size Size of FITS file 61- 88 A28 --- FileName Name of FITS file, in subdirectory sp 90-139 A50 --- Title Title of the FITS file
Acknowledgements: Johan Peter Uldall Fynbo, jfynbo(at)
(End) Patricia Vannier [CDS] 27-Sep-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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