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相关论文: Towards a Full Census of the Obscure(d) Vela Super…

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We conducted a search for HI emission of the gas-rich galaxies in the Vela region ($260^{\circ} \leq \ell \leq 290^{\circ}, -2^{\circ} \leq b \leq 1^{\circ}$) to explore the Vela Supercluster (VSCL) at $V_\mathrm{hel} \sim 18000$ km…

We report the discovery of a potentially major supercluster that extends across the Galactic Plane in the constellation of Vela, at a mean recessional velocity of ~18,000 km/s. Recent multi-object spectroscopic observations of this Vela…

We conducted the MeerKAT Vela Supercluster survey, named Vela$-$HI, to bridge the gap between the Vela SARAO MeerKAT Galactic Plane Survey (Vela$-$SMGPS, $-2^{\circ} \leq b \leq 1^{\circ}$), and optical and near-infrared spectroscopic…

A large fraction of the extragalactic sky is obscured by foreground dust and stars along the plane of the Milky Way, leaving a major gap (~ 20%) in whole-sky maps of large-scale structures -- an incompleteness that is even more severe for…

宇宙学与河外天体物理 · 物理学 2026-03-11 A. M. Hollinger , H. M. Courtois , R. C. Kraan-Korteweg , J. Mould , S. H. A. Rajohnson

The universe region obscured by the Milky Way is very large and only future blind large HI redshift, and targeted peculiar surveys on the outer borders will determine how much mass is hidden there. Meanwhile, we apply for the first time two…

宇宙学与河外天体物理 · 物理学 2019-10-09 Helene M. Courtois , Renee. C. Kraan-Korteweg , Alexandra Dupuy , Romain Graziani , Noam I Libeskind

We present six deep Near-InfraRed (JHK_s) photometric catalogues of galaxies identified in six cluster candidates (VC02, VC04, VC05, VC08, VC10, VC11) within the Vela Supercluster (VSCL) as part of our efforts to learn more about this large…

星系天体物理 · 物理学 2023-04-26 N. Hatamkhani , R. C. Kraan-Korteweg , S. L. Blyth , K. Said , A. Elagali

We report here on extragalactic large-scale structures uncovered by a deep optical survey for galaxies behind the southern Milky Way. Systematic visual inspection of the ESO/SRC-survey revealed over 10000 previously unknown galaxies in the…

天体物理学 · 物理学 2015-06-24 R. C. Kraan-Korteweg , P. A. Woudt , P. A. Henning

To learn more about the properties of the Vela Supercluster (VSCL) located behind the Milky Way at $cz\sim 18000$~km~s$^{-1}$, we determined the $K_s$-band Luminosity Function (LF) of VC04, the richest known galaxy cluster in the VSCL, and…

星系天体物理 · 物理学 2024-07-22 N. Hatamkhani , R. C. Kraan-Korteweg , S. L. Blyth , R. E. Skelton

We present results of a blind 21cm HI-line imaging survey of a galaxy overdensity located behind the Milky Way at $\ell,b$ $\approx$ 160 deg, 0.5 deg. The overdensity corresponds to a Zone-of-Avoidance crossing of the Perseus-Pisces…

We report a promising candidate for a distant supercluster at z $\sim 1.1$ in the Dark Energy Survey Science Verification data. We examine smoothed semi-3D galaxy density maps in various photo-z slices. Among several overdense regions, in…

宇宙学与河外天体物理 · 物理学 2020-08-11 Tapish Narwal , Tomotsugu Goto , Tetsuya Hashimoto , Seong Jin Kim , Chia-Ying Chiang , Yi-Han Wu

We present Australia Telescope Compact Array (ATCA) observations of a galaxy-sized intergalactic HI cloud (the Vela Cloud) in the NGC 3256 galaxy group. The group contains the prominent merging galaxy NGC 3256, which is surrounded by a…

宇宙学与河外天体物理 · 物理学 2015-05-13 Jayanne English , Baerbel Koribalski , Joss Bland-Hawthorn , Ken Freeman , Claudia McCain

In this paper, we limit the stellar content of 13 high-velocity clouds (HVCs; including 1 compact HVC) using the detection limits of a new survey for resolved Milky Way satellite galaxies in the Sloan Digital Sky Survey Early Data Release…

天体物理学 · 物理学 2009-11-07 Beth Willman , Julianne Dalcanton , Zeljko Ivezic , Donald P. Schneider , Donald G. York

The census of massive clusters of galaxies in the local Universe is almost complete, thanks to their prominent observational signatures at X-ray, optical, and sub-mm wavelengths. Nevertheless, a number of such systems are likely to be…

Various scenarios have been proposed to explain the origin of the Galactic high-velocity clouds, predicting different distances and implying widely varying properties for the Galaxy's gaseous halo. To eliminate the difficulties of studying…

天体物理学 · 物理学 2007-05-23 Eric D. Miller , Joel N. Bregman

Context. The Vela complex is a region of the sky that gathers several stellar and interstellar structures in a few hundred square degrees. Aims. Gaia data now allows us to obtain a 3D view of the Vela interstellar structures through the…

星系天体物理 · 物理学 2021-11-24 C. Hottier , C. Babusiaux , F. Arenou

We present results of our wide-field redshift survey of galaxies in a 285 square degree region of the Shapley Supercluster (SSC), based on a set of 10529 velocity measurements (including 1201 new ones) on 8632 galaxies obtained from various…

Generally the dynamical state of superclusters is poorly known. We study properties of superclusters and select a sample of quasi-spherical superclusters, the dynamics of which can be studied using the $\Lambda$ significance diagram. We…

宇宙学与河外天体物理 · 物理学 2022-12-07 Pekka Heinämäki , Pekka Teerikorpi , Marian Douspis , Pasi Nurmi , Maret Einasto , Mirt Gramann , Jukka Nevalainen , Enn Saar

We have investigated the peculiar motions of clusters of galaxies in the Ursa Major (UMa) supercluster and its neighborhood. Based on SDSS (Sloan Digital Sky Survey) data, we have compiled a sample of early-type galaxies and used their…

天体物理学 · 物理学 2009-06-23 Flera G. Kopylova , Alexander I. Kopylov

We have observed 11 compact high-velocity clouds in the 21-cm line of neutral hydrogen with the 100-m telescope in Effelsberg. Our observations show that most of the clouds have a rather complex morphology. Head-tail structures and…

天体物理学 · 物理学 2007-05-23 T. Westmeier , C. Bruens , J. Kerp

We present a new, objectively selected, sample of galaxy overdensities detected in the Hubble Space Telescope Medium Deep Survey. These clusters/groups were found using an automated procedure which involved searching for statistically…

天体物理学 · 物理学 2009-10-12 E. J. Ostrander , R. C. Nichol , K. U. Ratnatunga , R. E. Griffiths
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