The Subaru Lyα blob survey: a sample of 100-kpc Lyα blobs at z = 3⋆
نویسندگان
چکیده
منابع مشابه
What powers Lyα blobs?⋆
Lyα blobs (LABs) are spatially extended Lyα nebulae seen at high redshift. The origin of Lyα emission in the LABs is still unclear and under debate. To study their heating mechanism(s), we present Australia Telescope Compact Array (ATCA) observations of the 20 cm radio emission and Herschel PACS and SPIRE measurements of the far-infrared (FIR) emission toward the four LABs in the protocluster J...
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We have used the SINFONI near-infrared integral field unit on the VLT to resolve the optical emission line structure of one of the brightest (LLyα ≈ 10 erg s−1) and nearest (z ≈ 2.38) of all Lyα blobs (LABs). The target, known in the literature as object ‘B1’ (Francis et al. 1996), lies at a redshift where the main optical emission lines are accessible in the observed near-infrared. We detect l...
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We study the nature of damped Lyα absorption (DLA) systems at z ≤ 1 using a sample of 11 DLA galaxies, for which accurate redshift measurements are available. Five of the 11 systems are identified in our on-going photometric redshift survey of DLA galaxies, while the remaining six systems are identified by previous groups using either spectroscopic or photometric redshift techniques. Absolute B...
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We consider a forming galaxy undergoing multitudinous supernova (SN) explosions, as a possible model of Lyα blobs (LABs). For this purpose, an ultra–high resolution hydrodynamic simulation is performed using 1024 grid points, where SN remnants are resolved with sufficient accuracy. It is found that multiple SN explosions produce kpc–size expanding hot bubbles, which drive cool, dense shells by ...
متن کاملGravity-driven Lyα blobs from cold streams into galaxies
We use high-resolution cosmological hydrodynamical adaptive mesh refinement (AMR) simulations to predict the characteristics of Lyα emission from the cold gas streams that fed galaxies in massive haloes at high redshift. The Lyα luminosity in our simulations is powered by the release of gravitational energy as gas flows from the intergalactic medium into the halo potential wells. The ultraviole...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society: Letters
سال: 2011
ISSN: 1745-3933,1745-3925
DOI: 10.1111/j.1745-3933.2010.00969.x