The Galaxy–Absorber Cross-Correlation Function

نویسندگان

  • Kenneth M. Lanzetta
  • John K. Webb
  • Xavier Barcons
چکیده

We describe an analysis of the galaxy–absorber cross-correlation function ξga(v, ρ) as a function of velocity separation v, impact parameter separation ρ, and absorber Lyα equivalent width W on impact parameter scales that extend up to ≈ 1 h Mpc.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The relation between Lyman–α absorbers and gas–rich galaxies in the local universe

We use high-resolution hydrodynamical simulations to investigate the spatial correlation between weak (NHI < 10 cm) Lyα absorbers and gas–rich galaxies in the local universe. We confirm that Lyα absorbers are preferentially expected near gas–rich galaxies and that the degree of correlation increases with the column density of the absorber. The real–space galaxy auto–correlation is stronger than...

متن کامل

Correlations between O Vi Absorbers and Galaxies at Low Redshift

We investigate the relationship between galaxies and metal-line absorption systems in a large-scale cosmological simulation with galaxy formation. Our detailed treatment of metal enrichment and non-equilibrium calculation of oxygen species allow us, for the first time, to carry out quantitative calculations of the cross-correlations between galaxies and O VI absorbers. We find the following: (1...

متن کامل

Measuring the halo mass of Mg ii absorbers from their cross-correlation with Luminous Red Galaxies

We study the cross-correlation between 716 Mg ii quasar absorption systems and ∼ 100,000 Luminous Red Galaxies (LRGs) selected from the Sloan Digital Sky Survey Data Release 3 in the redshift range 0.4 6 z 6 0.8. The Mg ii systems were selected to have λλ2796 & 2803 rest-frame equivalent widths > 1.0 Å and identifications confirmed by the Fe ii λ2600 or Mg i λ2852 lines. Over co-moving scales 0...

متن کامل

The association between gas and galaxies II: The 2-point correlation function

We measure the 2-point correlation function, ξAG, between galaxies and quasar absorption line systems at z < 1, using the dataset of Morris & Jannuzi (2006) on 16 lines-of-sight (LOS) with UV spectroscopy and galaxy multi-object spectroscopy (paper I). The measurements are made in 2D redshift space out to π = 20h Mpc (comoving) along the LOS and out to σ = 2h Mpc projected; as a function of HI ...

متن کامل

Probing the Igm-galaxy Connection at Z < 0.5 I : a Galaxy Survey in Qso Fields and a Galaxy-absorber Cross-correlation Study

We present an imaging and spectroscopic survey of galaxies in fields around QSOs HE 0226−4110, PKS 0405−123, and PG 1216+069. The fields are selected to have ultraviolet echelle spectra available, which uncover 195 Lyα absorbers and 13 OVI absorbers along the three sightlines. We obtain robust redshifts for 1104 galaxies of rest-frame absolute magnitude MR −5log h . −16 and at projected physica...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997