中文
相关论文

相关论文: The HI mass function in the Parkes HI Zone of Avoi…

200 篇论文

We use the catalogue of 4315 extragalactic HI 21-cm emission line detections from HIPASS to calculate the most accurate measurement of the HI mass function (HIMF) of galaxies to date. The completeness of the HIPASS sample is well…

天体物理学 · 物理学 2009-11-10 M. A. Zwaan , M. J. Meyer , L. Staveley-Smith , R. L. Webster

We measure the HI mass function (HIMF) and velocity width function (WF) across environments over a range of masses $7.2<\log(M_{HI}/M_{\odot})<10.8$, and profile widths $1.3\log(km/s)<\log(W)<2.9\log(km/s)$, using a catalog of ~7,300…

We exploit a large, complete optical diameter and HI flux limited sample of spiral galaxies with types later than S0a to derive a robust measurement of the HI mass function (HIMF) for masses log(M_HI/M_Sun) > 7.4 which takes into account…

天体物理学 · 物理学 2009-11-10 Christopher M. Springob , Martha P. Haynes , Riccardo Giovanelli

The HI mass function (HIMF) for galaxies in the local universe is constructed from the results of the Arecibo HI Strip Survey, a blind extragalactic survey in the 21cm line. The survey consists of two strips covering in total 65 square…

天体物理学 · 物理学 2009-10-30 Martin Zwaan , Frank Briggs , David Sprayberry , Ertu Sorar

We present the first HI mass function (HIMF) measurement for the recent FAST All Sky HI (FASHI) survey and the most complete measurements of HIMF in the local universe thus far. We obtained these results by combining the HI catalogues from…

星系天体物理 · 物理学 2025-03-28 Wenlin Ma , Hong Guo , Haojie Xu , Michael G. Jones , Chuan-Peng Zhang , Ming Zhu , Jing Wang , Jie Wang , Peng Jiang

We present a new accurate measurement of the HI mass function of galaxies from the HIPASS Bright Galaxy Catalog, a sample of 1000 galaxies with the highest HI peak flux densities in the southern hemisphere (Koribalski et al. 2003). This…

We present a Bayesian Stacking technique to directly measure the HI mass function (HIMF) and its evolution with redshift using galaxies formally below the nominal detection threshold. We generate galaxy samples over several sky areas given…

High-accuracy HI profiles and linewidths are presented for inclined ($(b/a)^o < 0.5$) spiral galaxies in the southern Zone of Avoidance (ZOA). These galaxies define a sample for use in the determinations of peculiar velocities using the…

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

The Arecibo Legacy Fast ALFA (ALFALFA) survey has completed source extraction for 40% of its total sky area, resulting in the largest sample of HI-selected galaxies to date. We measure the HI mass function from a sample of 10,119 galaxies…

We present the most precise measurement of the $z = 0$ HI mass function (HIMF) to date based on the final catalogue of the ALFALFA (Arecibo Legacy Fast ALFA) blind HI survey of the nearby Universe. The Schechter function fit has a `knee'…

星系天体物理 · 物理学 2018-03-14 Michael G. Jones , Martha P. Haynes , Riccardo Giovanelli , Crystal Moorman

A blind HI survey of the extragalactic sky behind the southern Milky Way has been conducted with the multibeam receiver on the 64-m Parkes radio telescope. The survey covers the Galactic longitude range 212 < l < 36 and Galactic latitudes…

We present the neutral hydrogen mass ($M_{\text{HI}}$) function (HIMF) and velocity width ($w_{50}$) function (HIWF) based on a sample of 7857 galaxies from the 40% data release of the ALFALFA survey ($\alpha.40$). The low mass (velocity…

星系天体物理 · 物理学 2021-12-22 Saili Dutta , Nishikanta Khandai , Sandeep Rana

The local HI mass function (HIMF), like the optical luminosity function, is an important observational input into models of cosmology and galaxy evolution. It is a helpful framework for assessing the number density of gas rich dwarf…

天体物理学 · 物理学 2007-05-23 Martin Zwaan

We estimate the HI mass function (HIMF) of galaxies in groups based on thousands of ALFALFA (Arecibo Legacy Fast ALFA survey) HI detections within the galaxy groups of four widely used SDSS (Sloan Digital Sky Survey) groups catalogues.…

星系天体物理 · 物理学 2020-04-08 Michael G. Jones , Kelley M. Hess , Elizabeth A. K. Adams , Lourdes Verdes-Montenegro

We study the faint end of the HI mass function (HIMF) in order to test the predictions of the CDM theory on the number density of objects with small (dark) masses. The neutral hydrogen is much better tracer of the underlying mass…

天体物理学 · 物理学 2009-11-11 K. Kovac , T. A. Oosterloo , J. M. van der Hulst

We present an empirical method to measure the halo mass function (HMF) of galaxies. We determine the relation between the \hi\ line-width from single-dish observations and the dark matter halo mass ($M_{200}$) inferred from rotation curve…

星系天体物理 · 物理学 2020-01-08 Pengfei Li , Federico Lelli , Stacy McGaugh , Marcel S. Pawlowski , Martin A. Zwaan , James Schombert

The contribution of extragalactic objects with HI masses below $10^8 M_\odot$ to the HI mass function remains uncertain. Several aspects of the detection of low-mass sources in HI surveys are not always considered, and as a result different…

天体物理学 · 物理学 2007-05-23 S. E. Schneider , J. L. Rosenberg

Current studies of the peculiar velocity flow field in the Local Universe are limited by either the lack of detection or accurate photometry for galaxies at low Galactic latitudes. The contribution to the dynamics of the Local Group of the…

星系天体物理 · 物理学 2015-06-22 Wendy L. Williams , Renée C. Kraan-Korteweg , Patrick A. Woudt

We use the HI-selected galaxy sample from the Arecibo Dual-Beam Survey (Rosenberg & Schneider 2000) to determine the shape of the HI mass function of galaxies in the local universe using both the step-wise maximum likelihood and the 1/V_tot…

天体物理学 · 物理学 2009-11-07 Jessica L. Rosenberg , Stephen E. Schneider
‹ 上一页 1 2 3 10 下一页 ›