The VLT LBG Redshift Survey- II. Interactions between galaxies and the IGM at z~ 3

N. H M Crighton, R. Bielby, T. Shanks, L. Infante, C. G. Bornancini, N. Bouché, D. G. Lambas, J. D. Lowenthal, D. Minniti, S. L. Morris, N. Padilla, C. Péroux, P. Petitjean, T. Theuns, P. Tummuangpak, P. M. Weilbacher, L. Wisotzki, G. Worseck

Resultado de la investigación: Article

38 Citas (Scopus)

Resumen

We have measured redshifts for 243 z≈ 3 quasars in nine Very Large Telescope (VLT) Visible Imaging and Multi-Object Spectrograph (VIMOS) Lyman-break galaxy (LBG) redshift survey areas, each of which is centred on a known bright quasar. Using the spectra of these quasars, we measure the cross-correlation between neutral hydrogen gas causing the Lyα forest and 1020 LBGs at z≈ 3. We find an increase in neutral hydrogen absorption within ≈5h-1Mpc of a galaxy in agreement with the results of Adelberger et al. The Lyα-LBG cross-correlation can be described by a power law on scales larger than 3h-1Mpc. When galaxy velocity dispersions are taken into account, our results at smaller scales (<2h-1Mpc) are also in good agreement with the results of Adelberger et al. There is little immediate indication of a region with a transmission spike above the mean intergalactic medium value which might indicate the presence of star formation feedback. To measure the galaxy velocity dispersions, which include both intrinsic LBG velocity dispersion and redshift errors, we have used the LBG-LBG redshift-space distortion measurements of Bielby et al. We find that the redshift-space transmission spike implied in the results of Adelberger et al. is too narrow to be physical in the presence of the likely LBG velocity dispersion and is likely to be a statistical fluke. Nevertheless, neither our nor previous data can rule out the presence of a narrow, real-space transmission spike, given the evidence of the increased Lyα absorption surrounding LBGs which can mask the spike's presence when convolved with a realistic LBG velocity dispersion. Finally, we identify 176 Civ systems in the quasar spectra and find an LBG-Civ correlation strength on scales of 10h-1Mpc consistent with the relation measured at ≈Mpc scales.

Idioma originalEnglish
Páginas (desde-hasta)28-49
Número de páginas22
PublicaciónMonthly Notices of the Royal Astronomical Society
Volumen414
N.º1
DOI
EstadoPublished - jun 2011

Huella dactilar

telescopes
galaxies
interactions
spikes
quasars
hydrogen
cross correlation
power law
intergalactic media
gas
spectrographs
star formation
indication
masks
gases

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Crighton, N. H. M., Bielby, R., Shanks, T., Infante, L., Bornancini, C. G., Bouché, N., ... Worseck, G. (2011). The VLT LBG Redshift Survey- II. Interactions between galaxies and the IGM at z~ 3. Monthly Notices of the Royal Astronomical Society, 414(1), 28-49. https://doi.org/10.1111/j.1365-2966.2011.17247.x
Crighton, N. H M ; Bielby, R. ; Shanks, T. ; Infante, L. ; Bornancini, C. G. ; Bouché, N. ; Lambas, D. G. ; Lowenthal, J. D. ; Minniti, D. ; Morris, S. L. ; Padilla, N. ; Péroux, C. ; Petitjean, P. ; Theuns, T. ; Tummuangpak, P. ; Weilbacher, P. M. ; Wisotzki, L. ; Worseck, G. / The VLT LBG Redshift Survey- II. Interactions between galaxies and the IGM at z~ 3. En: Monthly Notices of the Royal Astronomical Society. 2011 ; Vol. 414, N.º 1. pp. 28-49.
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abstract = "We have measured redshifts for 243 z≈ 3 quasars in nine Very Large Telescope (VLT) Visible Imaging and Multi-Object Spectrograph (VIMOS) Lyman-break galaxy (LBG) redshift survey areas, each of which is centred on a known bright quasar. Using the spectra of these quasars, we measure the cross-correlation between neutral hydrogen gas causing the Lyα forest and 1020 LBGs at z≈ 3. We find an increase in neutral hydrogen absorption within ≈5h-1Mpc of a galaxy in agreement with the results of Adelberger et al. The Lyα-LBG cross-correlation can be described by a power law on scales larger than 3h-1Mpc. When galaxy velocity dispersions are taken into account, our results at smaller scales (<2h-1Mpc) are also in good agreement with the results of Adelberger et al. There is little immediate indication of a region with a transmission spike above the mean intergalactic medium value which might indicate the presence of star formation feedback. To measure the galaxy velocity dispersions, which include both intrinsic LBG velocity dispersion and redshift errors, we have used the LBG-LBG redshift-space distortion measurements of Bielby et al. We find that the redshift-space transmission spike implied in the results of Adelberger et al. is too narrow to be physical in the presence of the likely LBG velocity dispersion and is likely to be a statistical fluke. Nevertheless, neither our nor previous data can rule out the presence of a narrow, real-space transmission spike, given the evidence of the increased Lyα absorption surrounding LBGs which can mask the spike's presence when convolved with a realistic LBG velocity dispersion. Finally, we identify 176 Civ systems in the quasar spectra and find an LBG-Civ correlation strength on scales of 10h-1Mpc consistent with the relation measured at ≈Mpc scales.",
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author = "Crighton, {N. H M} and R. Bielby and T. Shanks and L. Infante and Bornancini, {C. G.} and N. Bouch{\'e} and Lambas, {D. G.} and Lowenthal, {J. D.} and D. Minniti and Morris, {S. L.} and N. Padilla and C. P{\'e}roux and P. Petitjean and T. Theuns and P. Tummuangpak and Weilbacher, {P. M.} and L. Wisotzki and G. Worseck",
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Crighton, NHM, Bielby, R, Shanks, T, Infante, L, Bornancini, CG, Bouché, N, Lambas, DG, Lowenthal, JD, Minniti, D, Morris, SL, Padilla, N, Péroux, C, Petitjean, P, Theuns, T, Tummuangpak, P, Weilbacher, PM, Wisotzki, L & Worseck, G 2011, 'The VLT LBG Redshift Survey- II. Interactions between galaxies and the IGM at z~ 3', Monthly Notices of the Royal Astronomical Society, vol. 414, n.º 1, pp. 28-49. https://doi.org/10.1111/j.1365-2966.2011.17247.x

The VLT LBG Redshift Survey- II. Interactions between galaxies and the IGM at z~ 3. / Crighton, N. H M; Bielby, R.; Shanks, T.; Infante, L.; Bornancini, C. G.; Bouché, N.; Lambas, D. G.; Lowenthal, J. D.; Minniti, D.; Morris, S. L.; Padilla, N.; Péroux, C.; Petitjean, P.; Theuns, T.; Tummuangpak, P.; Weilbacher, P. M.; Wisotzki, L.; Worseck, G.

En: Monthly Notices of the Royal Astronomical Society, Vol. 414, N.º 1, 06.2011, p. 28-49.

Resultado de la investigación: Article

TY - JOUR

T1 - The VLT LBG Redshift Survey- II. Interactions between galaxies and the IGM at z~ 3

AU - Crighton, N. H M

AU - Bielby, R.

AU - Shanks, T.

AU - Infante, L.

AU - Bornancini, C. G.

AU - Bouché, N.

AU - Lambas, D. G.

AU - Lowenthal, J. D.

AU - Minniti, D.

AU - Morris, S. L.

AU - Padilla, N.

AU - Péroux, C.

AU - Petitjean, P.

AU - Theuns, T.

AU - Tummuangpak, P.

AU - Weilbacher, P. M.

AU - Wisotzki, L.

AU - Worseck, G.

PY - 2011/6

Y1 - 2011/6

N2 - We have measured redshifts for 243 z≈ 3 quasars in nine Very Large Telescope (VLT) Visible Imaging and Multi-Object Spectrograph (VIMOS) Lyman-break galaxy (LBG) redshift survey areas, each of which is centred on a known bright quasar. Using the spectra of these quasars, we measure the cross-correlation between neutral hydrogen gas causing the Lyα forest and 1020 LBGs at z≈ 3. We find an increase in neutral hydrogen absorption within ≈5h-1Mpc of a galaxy in agreement with the results of Adelberger et al. The Lyα-LBG cross-correlation can be described by a power law on scales larger than 3h-1Mpc. When galaxy velocity dispersions are taken into account, our results at smaller scales (<2h-1Mpc) are also in good agreement with the results of Adelberger et al. There is little immediate indication of a region with a transmission spike above the mean intergalactic medium value which might indicate the presence of star formation feedback. To measure the galaxy velocity dispersions, which include both intrinsic LBG velocity dispersion and redshift errors, we have used the LBG-LBG redshift-space distortion measurements of Bielby et al. We find that the redshift-space transmission spike implied in the results of Adelberger et al. is too narrow to be physical in the presence of the likely LBG velocity dispersion and is likely to be a statistical fluke. Nevertheless, neither our nor previous data can rule out the presence of a narrow, real-space transmission spike, given the evidence of the increased Lyα absorption surrounding LBGs which can mask the spike's presence when convolved with a realistic LBG velocity dispersion. Finally, we identify 176 Civ systems in the quasar spectra and find an LBG-Civ correlation strength on scales of 10h-1Mpc consistent with the relation measured at ≈Mpc scales.

AB - We have measured redshifts for 243 z≈ 3 quasars in nine Very Large Telescope (VLT) Visible Imaging and Multi-Object Spectrograph (VIMOS) Lyman-break galaxy (LBG) redshift survey areas, each of which is centred on a known bright quasar. Using the spectra of these quasars, we measure the cross-correlation between neutral hydrogen gas causing the Lyα forest and 1020 LBGs at z≈ 3. We find an increase in neutral hydrogen absorption within ≈5h-1Mpc of a galaxy in agreement with the results of Adelberger et al. The Lyα-LBG cross-correlation can be described by a power law on scales larger than 3h-1Mpc. When galaxy velocity dispersions are taken into account, our results at smaller scales (<2h-1Mpc) are also in good agreement with the results of Adelberger et al. There is little immediate indication of a region with a transmission spike above the mean intergalactic medium value which might indicate the presence of star formation feedback. To measure the galaxy velocity dispersions, which include both intrinsic LBG velocity dispersion and redshift errors, we have used the LBG-LBG redshift-space distortion measurements of Bielby et al. We find that the redshift-space transmission spike implied in the results of Adelberger et al. is too narrow to be physical in the presence of the likely LBG velocity dispersion and is likely to be a statistical fluke. Nevertheless, neither our nor previous data can rule out the presence of a narrow, real-space transmission spike, given the evidence of the increased Lyα absorption surrounding LBGs which can mask the spike's presence when convolved with a realistic LBG velocity dispersion. Finally, we identify 176 Civ systems in the quasar spectra and find an LBG-Civ correlation strength on scales of 10h-1Mpc consistent with the relation measured at ≈Mpc scales.

KW - Galaxies: high-redshift

KW - Intergalactic medium

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