%0 Generic %1 Roche2011 %A Roche, Nathan %A Franzetti, Paolo %A Garilli, Bianca %A Zamorani, Giovanni %A Cimatti, Andrea %A Rossetti, Emanuel %D 2011 %K high qso redhsift %T Detecting the Highest Redshift (z > 8) QSOs in a Wide, Near Infra-red Slitless Spectroscopic Survey %U http://arxiv.org/abs/1109.0574 %X We investigate the prospects of extending observations of high redshift QSOs to z > 8 by means of a very wide-area near-infra-red slitless spectroscopic survey, e.g. the planned survey with the European Space Agency's Euclid telescope. For any QSOs at z > 8.06 the strong Lyman-alpha line will enter the wavelength range of the Euclid near-infra red imaging-spectrograph (NISP). We perform a detailed simulation of Euclid-NISP slitless spectroscopy (with the parameters of the wide survey) in an artificial field containing QSO spectra at all redshifts up to z = 12. The simulation spectra are analysed with an automated redshift finder, and a detection rate estimated as a function of H magnitude and redshift. Spectroscopic identification of QSOs would reach deeper limits for the redshift ranges where either H-alpha (0.67 < z < 2.05) or Lyman-alpha (z > 8.06) is visible. Furthermore, if photometrically-selected z > 8 spectra can be re-examined and re-fitted to minimize the effects of spectral contamination, the QSO detection rate in the Lyman-alpha window will be increased by an estimated 60% and will then be better here than at any other redshift, with an effective limit H = 21.5. With an extrapolated rate of QSO evolution, we predict the Euclid wide (15000 sq. deg.) spectroscopic survey will identify 20-35 very luminous QSOs at z > 8.06.

@misc{Roche2011, abstract = { We investigate the prospects of extending observations of high redshift QSOs to z > 8 by means of a very wide-area near-infra-red slitless spectroscopic survey, e.g. the planned survey with the European Space Agency's Euclid telescope. For any QSOs at z > 8.06 the strong Lyman-alpha line will enter the wavelength range of the Euclid near-infra red imaging-spectrograph (NISP). We perform a detailed simulation of Euclid-NISP slitless spectroscopy (with the parameters of the wide survey) in an artificial field containing QSO spectra at all redshifts up to z = 12. The simulation spectra are analysed with an automated redshift finder, and a detection rate estimated as a function of H magnitude and redshift. Spectroscopic identification of QSOs would reach deeper limits for the redshift ranges where either H-alpha (0.67 < z < 2.05) or Lyman-alpha (z > 8.06) is visible. Furthermore, if photometrically-selected z > 8 spectra can be re-examined and re-fitted to minimize the effects of spectral contamination, the QSO detection rate in the Lyman-alpha window will be increased by an estimated 60% and will then be better here than at any other redshift, with an effective limit H = 21.5. With an extrapolated rate of QSO evolution, we predict the Euclid wide (15000 sq. deg.) spectroscopic survey will identify 20-35 very luminous QSOs at z > 8.06. }, added-at = {2011-09-06T19:00:09.000+0200}, author = {Roche, Nathan and Franzetti, Paolo and Garilli, Bianca and Zamorani, Giovanni and Cimatti, Andrea and Rossetti, Emanuel}, biburl = {https://www.bibsonomy.org/bibtex/232e5bd91c29f36c72381ee0a4299a97a/miki}, description = {[1109.0574] Detecting the Highest Redshift (z > 8) QSOs in a Wide, Near Infra-red Slitless Spectroscopic Survey}, interhash = {c9f9d4908f57caadc6465dff2564ca0d}, intrahash = {32e5bd91c29f36c72381ee0a4299a97a}, keywords = {high qso redhsift}, note = {cite arxiv:1109.0574Comment: 16 pages, 19 figures, submitted to MNRAS}, timestamp = {2011-09-06T19:00:09.000+0200}, title = {Detecting the Highest Redshift (z > 8) QSOs in a Wide, Near Infra-red Slitless Spectroscopic Survey}, url = {http://arxiv.org/abs/1109.0574}, year = 2011 }