High-redshift damped Ly α absorbing galaxy model reproducing the N H I − Z distribution
نویسندگان
چکیده
منابع مشابه
A Serendipitous Search for High - Redshift Ly α Emission : Two Primeval Galaxy Candidates at z ≃ 3
In the course of our ongoing search for serendipitous high-redshift Lyα emission in deep archival Keck spectra, we discovered two very high equivalent width (W obs λ ∼> 450 Å, 2σ) Lyα emission line candidates at z ∼ 3 in a moderate dispersion (λ/∆λ ≃ 1200) spectrogram. Both lines have low velocity dispersions (σv ∼ 60 km s−1) and deconvolved radii r ≈ 1 h 50 kpc. We argue that the lines are Lyα...
متن کاملHigh - Redshift Ly α Emission : Two Primeval Galaxy Candidates at z ≃ 3
In the course of our ongoing search for serendipitous high-redshift Lyα emission in deep archival Keck spectra, we discovered two very high equivalent width (W obs λ ∼> 450 Å, 2σ) Lyα emission line candidates at z ∼ 3 in a moderate dispersion (λ/∆λ ≃ 1200) spectrogram. Both lines have low velocity dispersions (σv ∼ 60 km s−1) and deconvolved radii r ≈ 1 h 50 kpc. We argue that the lines are Lyα...
متن کاملABUNDANCE PROFILES AND KINEMATICS OF DAMPED Ly α ABSORBING GALAXIES AT z < 0
We present a spectroscopic study of six damped Lyα absorption (DLA) systems at z < 0.65, based on moderate-to-high resolution spectra of the galaxies Observations reported here were obtained in part at the MMT Observatory, a joint facility of the University of Arizona and the Smithsonian Institution. Observations reported here were obtained in part at the Magellan telescopes, a collaboration be...
متن کاملThe sub - damped Ly α system toward HE 0001 − 2340 : galaxy formation at z ≈ 2 ⋆
We present a detailed analysis of chemical abundances in a sub-damped Ly α absorber (sub-DLA) at z = 2.187 towards the quasar HE 0001−2340 (zem = 2.28). Our study is based on high-resolution (R ≈ 45, 000) spectroscopic data from the UVES instrument installed on the ESO Very Large Telescope (VLT). This sub-DLA system consists of at least 25 individual subcomponents spanning a restframe velocity ...
متن کامل0 Molecular hydrogen abundance in the dust - free damped Ly - α galaxy at z = 3 . 4
New results from the search for H2 absorption in the damped Lyα galaxy at redshift z = 3.4 toward QSO 0000–2620 (zem = 4.1) are reported. The high-resolution (λ/∆λ = 48, 000) spectra of Q0000–2620 were obtained using the Ultraviolet Visual Echelle Spectrograph (UVES) on the 8.2m ESO Kueyen telescope. The ortho-H2 column density is found to be N(J = 1) = (5.55±1.35)×10 13 cm (2σ C.L.). The combi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2020
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/staa1414