منابع مشابه
Winds and infalling gas in Lyman break galaxies
A model for gas outflows is proposed which simultaneously explains the correlations between the (i) equivalent width of low ionization and Lyα lines, (ii) outflow velocity, and (iii) star formation rate observed in Lyman Break Galaxies (LBGs). Our interpretation implies that LBGs host short-lived (30 ± 5 Myr) starburst episodes observed at different evolutionary phases. Initially, the starburst...
متن کاملIonization of Infalling Gas
Hα emission from neutral halo clouds probes the radiation and hydrodynamic conditions in the halo. Armed with such measurements, we can explore how radiation escapes from the Galactic plane and how infalling gas can survive a trip through the halo. The Wisconsin H-Alpha Mapper (WHAM) is one of the most sensitive instruments for detecting and mapping optical emission from the ISM. Here, we prese...
متن کاملAlma Observations of Lyman-α Blob 1: Halo Sub-structure Illuminated from Within
We present new Atacama Large Millimeter/Submillimeter Array (ALMA) 850μm continuum observations of the original Lymanα Blob (LAB) in the SSA22 field at z = 3.1 (SSA22-LAB01). The ALMA map resolves the previously identified submillimeter source into three components with total flux density S850 = 1.68± 0.06 mJy, corresponding to a star formation rate of ∼150 M yr−1. The submillimeter sources are...
متن کاملA Lyman - α blob in the GOODS South field : evidence for cold accretion onto a dark matter halo ⋆
We report on the discovery of a z = 3.16 Lyman-α emitting blob in the GOODS South field. The blob has a total Lyα luminosity of ∼ 10 43 erg s −1 and a diameter larger than 60 kpc. The available multi-wavelength data in the GOODS field consists of 13 bands from X-rays (Chandra) to infrared (Spitzer). Unlike other discovered Lyα blobs, this blob shows no obvious continuum counterpart in any of th...
متن کاملCross correlation of Lyman-α absorbers with gas-rich galaxies
The H I Parkes All Sky Survey (HIPASS) galaxy catalogue is cross-correlated with known low redshift, low column density (NHI < 10 cm) Lyman-α absorbers from the literature. The redshift-space correlation is found to be similar in strength to HIPASS galaxy self-clustering (correlation length s0,ag = 6 ± 4 and s0,gg = 3.1 ± 0.5 h −1 100 Mpc respectively). In realspace the cross-correlation is str...
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ژورنال
عنوان ژورنال: Nature Astronomy
سال: 2020
ISSN: 2397-3366
DOI: 10.1038/s41550-020-1033-3