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相关论文: HI asymmetries in spatially resolved SIMBA galaxie…

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Five galaxy groups with properties similar to those of the Local Group have been surveyed for HI clouds with the Arecibo Telescope. In total 300 pointings have been observed on grids of approximately 2.5 x 1.5 Mpc centred on the groups. The…

天体物理学 · 物理学 2009-11-06 Martin Zwaan

Due to the fact that HI mass measurements are not available for large galaxy samples at high redshifts, we apply a photometric estimator of the HI-to-stellar mass ratio (M_HI/M_*) calibrated using a local Universe sample of galaxies to a…

星系天体物理 · 物理学 2021-04-07 Wei Zhang , Guinevere Kauffmann , Jing Wang , Yanmei Chen , Jian Fu , Hong Wu

We present a global study of HI spectral line mapping for 16 Hickson Compact Groups (HCGs) combining new and unpublished VLA data, plus the analysis of the HI content of individual galaxies. Sixty percent of the groups show morphological…

天体物理学 · 物理学 2007-05-23 L. Verdes-Montenegro , M. S. Yun , B. A. Williams , W. K. Huchtmeier , A. Del Olmo , J. Perea

Observations of the cold neutral atomic hydrogen (HI) in and around disc galaxies have revealed that spatial and kinematic asymmetries are commonplace, and are reflected in the global HI spectra. We use the TNG100 box from the IllustrisTNG…

星系天体物理 · 物理学 2020-10-21 Adam B. Watts , Chris Power , Barbara Catinella , Luca Cortese , Adam R. H. Stevens

We derive the atomic hydrogen content for a total of 1900 spirals in the fields of eighteen nearby clusters. By comparing the HI deficiency distributions of the galaxies inside of and outside of one Abell radius of each cluster, we find…

We present SAMI-HI, a survey of the atomic hydrogen content of 296 galaxies with integral field spectroscopy available from the SAMI Galaxy Survey. The sample spans nearly 4 dex in stellar mass ($M_\star = 10^{7.4}-10^{11.1}~ \rm M_\odot$),…

The atomic hydrogen (HI) properties of star-forming galaxies in the local Universe are known to correlate with other galaxy properties via the ``HI scaling relations''. The redshift evolution of these relations serves as an important…

宇宙学与河外天体物理 · 物理学 2023-09-14 Apurba Bera , Nissim Kanekar , Jayaram N. Chengalur , Jasjeet S. Bagla

We present the bivariate neutral atomic hydrogen (HI)---stellar mass function (HISMF) (phi(M_HI, M_*)) for massive (log M_*/M_sun > 10) galaxies derived from a sample of 480 local (0.025 < z < 0.050) galaxies observed in HI at Arecibo as…

宇宙学与河外天体物理 · 物理学 2015-06-16 Jenna J. Lemonias , David Schiminovich , Barbara Catinella , Timothy M. Heckman , Sean M. Moran

We investigate the global neutral hydrogen (HI) content of isolated galaxies selected from the SDSS spectroscopic survey with optical evidence of Active Galactic Nuclei (AGN). Our sample includes galaxies with unresolved HI observations…

星系天体物理 · 物理学 2018-07-18 Jeremy D. Bradford , Marla C. Geha , Jenny E. Greene , Amy E. Reines , Claire M. Dickey

We describe a simulation for the distribution of galaxies focusing on the atomic Hydrogen content. We aim to make predictions for surveys of galaxies using the redshifted 21 cm line emission. We take the expected distribution of HI masses,…

宇宙学与河外天体物理 · 物理学 2023-01-18 Sauraj Bharti , J. S. Bagla

We determine the atomic hydrogen (HI) to halo mass relation (HIHM) using Arecibo Legacy Fast ALFA survey HI data at the location of optically selected groups from the Galaxy and Mass Assembly (GAMA) survey. We make direct HI detections for…

We present a comprehensive analysis of atomic hydrogen (HI) properties using a semi-analytical model of galaxy formation and N-body simulations covering a large cosmological volume at high resolution. We examine the HI mass function and the…

宇宙学与河外天体物理 · 物理学 2020-03-11 Marta Spinelli , Anna Zoldan , Gabriella De Lucia , Lizhi Xie , Matteo Viel

We study the properties of kinematically disturbed galaxies in the SAMI Galaxy Survey using a quantitative criterion, based on kinemetry (Krajnovic et al.). The approach, similar to the application of kinemetry by Shapiro et al. uses…

We present the first estimate, based on direct HI 21 cm observations, of the HI mass function (HIMF) of star-forming galaxies at $z\approx1$, obtained by combining our measurement of the scaling relation between HI mass ($M_{HI}$) and…

星系天体物理 · 物理学 2024-05-07 Aditya Chowdhury , Nissim Kanekar , Jayaram N. Chengalur

We present a comprehensive spectroscopic imaging survey of the distribution and kinematics of atomic hydrogen (HI) in 16 nearby spiral galaxies hosting low luminosity AGN, observed with high spectral and spatial resolution (resolution: ~20…

天体物理学 · 物理学 2008-11-26 S. Haan , E. Schinnerer , C. G. Mundell , S. Garcia-Burillo , F. Combes

Using the Parkes radio telescope, we study the 21cm neutral hydrogen (HI) properties of a sample of galaxies with redshifts z<0.13 extracted from the optical 2dF Galaxy Redshift Survey (2dFGRS). Galaxies at 0.04<z<0.13 are studied using new…

宇宙学与河外天体物理 · 物理学 2013-10-24 Jacinta Delhaize , Martin Meyer , Lister Staveley-Smith , Brian Boyle

Observational studies have established a remarkably tight power-law relationship between the H I masses and sizes of late-type galaxies, known as the H I mass-size relation. This relation has been shown to persist across various models of a…

星系天体物理 · 物理学 2025-12-05 Omphile Rabyang , Ed Elson

Most detected neutral atomic hydrogen (HI) at low redshift is associated with optically bright galaxies. However, a handful of HI clouds are known which appear to be optically dark and have no nearby potential progenitor galaxies, making…

星系天体物理 · 物理学 2018-05-23 Rhys Taylor , Richard Wünsch , Jan Palouš

We have conducted an HI 21 cm emission-line survey of six loose groups of galaxies chosen to be analogs to the Local Group. The survey was conducted using the Parkes Multibeam instrument and the Australia Telescope Compact Array (ATCA) over…

宇宙学与河外天体物理 · 物理学 2015-05-30 D. J. Pisano , D. G. Barnes , L. Staveley-Smith , B. K. Gibson , V. A. Kilborn , K. C. Freeman

We present the results of the HIGHz Arecibo survey, which measured the HI content of 39 galaxies at redshift $z>0.16$ selected from the Sloan Digital Sky Survey. These are all actively star-forming, disk-dominated systems in relatively…

星系天体物理 · 物理学 2015-06-23 Barbara Catinella , Luca Cortese