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相关论文: The HI-halo mass relation at redshift $z \sim 1$ f…

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We study the dependence of galaxy clustering on atomic gas mass using a sample of $\sim$16,000 galaxies with redshift in the range of $0.0025<z<0.05$ and HI mass of $M_{\rm HI}>10^8M_{\odot}$, drawn from the 70% complete sample of the…

星系天体物理 · 物理学 2017-09-06 Hong Guo , Cheng Li , Zheng Zheng , H. J. Mo , Y. P. Jing , Ying Zu , S. H. Lim , Haojie Xu

The number density of extragalactic 21-cm radio sources as a function of their spectral line-widths -- the HI width function (HIWF) -- is a sensitive tracer of the dark matter halo mass function (HMF). The $\Lambda$ cold dark matter model…

星系天体物理 · 物理学 2023-05-03 Richard A. N. Brooks , Kyle A. Oman , Carlos S. Frenk

In this paper we investigate how the halo mass function evolves with redshift, based on a suite of very large (with N_p = 3072^3 - 6000^3 particles) cosmological N-body simulations. Our halo catalogue data spans a redshift range of z =…

宇宙学与河外天体物理 · 物理学 2015-06-12 William A. Watson , Ilian T. Iliev , Anson D'Aloisio , Alexander Knebe , Paul R. Shapiro , Gustavo Yepes

With the advent of wide-area submillimeter surveys, a large number of high-redshift gravitationally lensed dusty star-forming galaxies (DSFGs) has been revealed. Due to the simplicity of the selection criteria for candidate lensed sources…

We present new determinations of the stellar-to-halo mass relation (SHMR) at $z=0-10$ that match the evolution of the galaxy stellar mass function, the SFR$-M_*$ relation,and the cosmic star formation rate. We utilize a compilation of 40…

星系天体物理 · 物理学 2017-06-28 Aldo Rodriguez-Puebla , Joel R. Primack , Vladimir Avila-Reese , S. M. Faber

We analyze the small-scale clustering in "MegaZ-LRG", a large photometric-redshift catalogue of Luminous Red Galaxies extracted from the imaging dataset of the Sloan Digital Sky Survey. MegaZ-LRG, presented in a companion paper, spans the…

天体物理学 · 物理学 2010-05-25 Chris Blake , Adrian Collister , Ofer Lahav

This paper introduces the data cubes from GHIGLS, deep Green Bank Telescope surveys of the 21-cm line emission of HI in 37 targeted fields at intermediate Galactic latitude. The GHIGLS fields together cover over 1000 square degrees at 9.55'…

Line intensity mapping (LIM) is an emerging technique with a unique potential to probe a wide range of scales and redshifts. Realizing the full potential of LIM, however, relies on accurate modeling of the signal. We introduce an extended…

宇宙学与河外天体物理 · 物理学 2022-02-23 Azadeh Moradinezhad Dizgah , Farnik Nikakhtar , Garrett K. Keating , Emanuele Castorina

Correlations between intrinsic ellipticities of galaxies are a potentially important systematic error when constraining dark energy properties from weak gravitational lensing (cosmic shear) surveys. In the absence of perfectly known galaxy…

宇宙学与河外天体物理 · 物理学 2015-05-13 Michael D. Schneider , Sarah Bridle

The stellar-to-halo mass relation (SHMR) is central to understanding the co-evolution of galaxies and their host dark matter haloes, yet it remains weakly constrained for dwarf galaxies owing to their faintness, especially beyond the Local…

We derive the weight function w(M) to apply to dark-matter halos that minimizes the stochasticity between the weighted halo distribution and its underlying mass density field. The optimal w(M) depends on the range of masses being used in…

宇宙学与河外天体物理 · 物理学 2015-05-19 Yan-Chuan Cai , Gary Bernstein , Ravi K. Sheth

We assess the impact of inhomogeneous reionization on detection of HII regions surrounding luminous high redshift quasars using planned low frequency radio telescopes. Our approach is to implement a semi-numerical scheme to calculate the…

天体物理学 · 物理学 2017-07-24 Paul M. Geil , Stuart Wyithe

We make the most precise determination to date of the number density of extragalactic 21-cm radio sources as a function of their spectral line widths - the HI velocity width function (HIWF) - based on 21827 sources from the final 7000…

星系天体物理 · 物理学 2021-11-17 Kyle A. Oman

The integrated HI emission from hierarchical structures such as groups and clusters of galaxies can be detected by FAST at intermediate redshifts. Here we propose to use FAST to study the evolution of the global HI content of clusters and…

星系天体物理 · 物理学 2018-10-15 Mei Ai , Ming Zhu , Jian Fu

The number density of extragalactic 21-cm radio sources as a function of their spectral line-widths -- the HI width function (HIWF) -- is a tracer of the dark matter halo mass function. The ALFALFA 21-cm survey measured the HIWF in northern…

星系天体物理 · 物理学 2026-01-14 Richard A. N. Brooks , Kyle A. Oman , Carlos S. Frenk

We report results from 21-cm intensity maps acquired from the Parkes radio telescope and cross-correlated with galaxy maps from the 2dF galaxy survey. The data span the redshift range $0.057<z<0.098$ and cover approximately 1,300 square…

We use the COSMOS2020 catalogue to measure the stellar-to-halo mass relation (SHMR) divided by central and satellite galaxies from $z=0.2$ to $z = 5.5$. Starting from accurate photometric redshifts we measure the near-infrared selected…

We report a $\approx 400$-hour Giant Metrewave Radio Telescope (GMRT) search for HI 21 cm emission from star-forming galaxies at $z = 1.18-1.39$ in seven fields of the DEEP2 Galaxy Survey. Including data from an earlier 60-hour GMRT…

星系天体物理 · 物理学 2021-06-09 Aditya Chowdhury , Nissim Kanekar , Barnali Das , K. S. Dwarakanath , Shiv Sethi

We combine Herschel observations of a total of 12 sources to construct the most uniform survey of HF and H2O in our Galactic disk. Both molecules are detected in absorption along all sight lines. The high spectral resolution of the…

星系天体物理 · 物理学 2015-06-11 P. Sonnentrucker , M. Wolfire , D. A. Neufeld , N. Flagey , M. Gerin , P. Goldsmith , D. Lis , R. Monje

We study halo mass functions with high-resolution $N$-body simulations under a $\Lambda$CDM cosmology. Our simulations adopt the cosmological model that is consistent with recent measurements of the cosmic microwave backgrounds with the…

宇宙学与河外天体物理 · 物理学 2021-12-08 Masato Shirasaki , Tomoaki Ishiyama , Shin'ichiro Ando