EDP Sciences
Free Access
Issue
A&A
Volume 584, December 2015
Article Number A100
Number of page(s) 8
Section Extragalactic astronomy
DOI https://doi.org/10.1051/0004-6361/201526570
Published online 27 November 2015

Online material

Appendix A: Notes on individual QSOs

We usually find an extra UV-flux drop in the spectra. However, the u-band photometry is consistent with the reddened QSO template. This drop might be caused by the inaccurate flux calibration at the blue end of the spectrum. The QSO SEDs and extinction curves are presented in Fig. A.1.

thumbnail Fig. A.1

Same as caption of Fig. 1.

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Appendix A.1: HAQ J0015+1129

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 0.87. The spectrum was obtained with the NOT/ALFOSC. The redshift was based on the detection of the Mg ii emission line. The data are well fit with a steeper extinction curve with AV = 0.58 ± 0.13 and RV = 2.66 ± 0.31. Previously, Paper II reported AV = 0.78.

Appendix A.2: HAQ J01290059

This is a reddened QSO from the HAQ survey of Paper I at redshift z = 0.71. The spectrum was obtained with the NTT/EFOSC2. The redshift was estimated from the Mg ii emission line. We modelled the QSO SED, and the data are well fit with AV = 0.74 ± 0.17 and RV = 2.41 ± 0.28. Previously, Paper I derived AV = 1.5.

Appendix A.3: HAQ J0130+1439

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 0.93. The spectrum was obtained with the NOT/ALFOSC, and the redshift was derived from the Mg ii emission line. We modelled the QSO SED, and the data are well fit with AV = 0.46 ± 0.12 and RV = 2.23 ± 0.35. Paper II reported AV = 0.4 from their SED analysis.

Appendix A.4: HAQ J0151+0618

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 0.95. The spectrum was obtained with the NOT/ALFOSC. The redshift was based on the detection of the Mg ii emission line. The SED is nicely reproduced with a steep extinction curve with AV = 0.51 ± 0.14 and RV = 2.29 ± 0.23. Previously, Paper II reported AV = 0.72.

Appendix A.5: HAQ J02470052

This is a reddened QSO from the HAQ survey of Paper I at redshift z = 0.825. The spectrum was obtained with the NTT/EFOSC2. The redshift was estimated from the Mg ii and O ii emission lines. The SED can be modelled with RV = 2.52 ± 0.19 and a very high extinction value of AV = 1.00 ± 0.11. Previously, Paper I inferred AV = 1.5 from their SED analysis.

Appendix A.6: HAQ J0312+0035

This is a reddened QSO from the HAQ survey of Paper I at redshift z = 1.28. The spectrum was obtained with the NTT/EFOSC2. The redshift was derived from the Mg ii and C iii emission lines. The SED can be modelled with a steep extinction curve with AV = 0.50 ± 0.12 and RV = 2.29 ± 0.23. Previously, Paper I derived AV = 0.8.

Appendix A.7: HAQ J0319+0623

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 2.10. The spectrum was obtained with the NOT/ALFOSC, and the redshift was derived from the Si iv + O iv, C iv, and C iii emission lines. The SED can be modelled with a steep extinction curve with AV = 0.20 ± 0.06 and RV = 2.38 ± 0.365. Paper II reported AV = 0.13 from the SED analysis.

Appendix A.8: HAQ J0347+0115

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 0.98. The spectrum was obtained with the NOT/ALFOSC. The redshift was estimated from the Mg ii emission line. The SED is modelled well with a steep extinction curve and AV = 0.29 ± 0.12 together with RV = 2.23 ± 0.39. Previously, Paper II inferred AV = 0.4 from the SED analysis.

Appendix A.9: HAQ J1400+0219

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 0.86. The spectrum was obtained with the NOT/ALFOSC. The redshift was based on the detection of Mg ii emission line. We found the observed data fit very well with a steep extinction curve and relatively high AV with AV = 0.56 ± 0.09 and RV = 2.16 ± 0.36. Previously, Paper II reported AV = 0.85.

Appendix A.10: HAQ J1409+0940

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 0.92. The spectrum was obtained with the NOT/ALFOSC, and the redshift was derived from the relatively weak Mg ii emission line. The SED can be modelled with a steep extinction curve with AV = 0.54 ± 0.10 and RV = 2.27 ± 0.26. Paper II derived AV = 0.93 from SED analysis.

Appendix A.11: HAQ J1527+0250

This is a reddened BAL QSO from the HAQ survey of Paper II at redshift z = 2.13. The spectrum was obtained with the NOT/ALFOSC. The redshift was estimated from the C iv and C iii emission lines. We found that the observed data fit very well with a steep extinction curve with AV = 0.21 ± 0.07 and RV = 2.33 ± 0.36. Previously, Paper II reported AV = 0.2.

Appendix A.12: HAQ J1606+2902

This is a reddened BAL QSO from the HAQ survey of Paper II at redshift z = 1.82. The spectrum was obtained with the NOT/ALFOSC, and the redshift was based on the detection of C iv, Fe ii, and Mg ii emission lines. The data are nicely reproduced with a low extinction value of AV = 0.26 ± 0.08 and RV = 2.44 ± 0.24. Paper II inferred AV = 0.25 from their SED analysis.

Appendix A.13: HAQ J1639+3157

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 0.82. The spectrum was obtained with the NOT/ALFOSC, and the redshift was based on the detection of Mg ii emission line. The data are well described with a steep extinction curve and relatively high extinction value of AV = 0.73 ± 0.11 and RV = 2.48 ± 0.18. Previously, Paper II derived AV = 0.79.

Appendix A.14: HAQ J1643+2944

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 1.08. The spectrum was obtained with the NOT/ALFOSC. The redshift was derived from the relatively weak Mg ii emission line. The SED of the QSO fits well with AV = 0.39 ± 0.13 and RV = 2.56 ± 0.27. Paper II previously reported AV = 0.44 from the SED analysis.

Appendix A.15: HAQ J2310+1117

This is a reddened QSO from the HAQ survey of Paper II at redshift z = 0.82. The spectrum was obtained with the NOT/ALFOSC, and the redshift was estimated from the weak Mg ii emission line. We found that the observed data fit very well with a steep extinction curve with AV = 0.57 ± 0.13 and RV = 2.44 ± 0.28. Previously, Paper II reported AV = 0.92 from the SED analysis.

Appendix A.16: HAQ J23550041

This is a reddened QSO from the HAQ survey of Paper I at redshift z = 1.01. The spectrum was obtained with the NOT/ALFOSC. The redshift was inferred from the Mg ii emission line. The SED is fit very well with a steep extinction curve with AV = 0.65 ± 0.13 and RV = 2.54 ± 0.24. Paper I derived AV = 1.0−1.6 from the SED analysis.


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