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相关论文: The relation between HI Gas and Star Formation Pro…

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We analyze line-of-sight atomic hydrogen (HI) line profiles of 31 nearby, low-mass galaxies selected from the Very Large Array - ACS Nearby Galaxy Survey Treasury (VLA-ANGST) and The HI Nearby Galaxy Survey (THINGS) to trace regions…

As a first step toward constraining the efficiency of the star formation episodes that lead to elliptical (E) and lenticular (S0) K+A galaxies, a survey for HI within a sample of E and S0 K+A galaxies and their likely progenitors (i.e.,…

天体物理学 · 物理学 2009-06-23 J. F. Helmboldt

We study the star formation properties of 59 void galaxies as part of the Void Galaxy Survey (VGS). Current star formation rates are derived from $\rm{H\alpha}$ and recent star formation rates from near-UV imaging. In addition, infrared 3.4…

We present the analysis of Halpha3, an Halpha imaging survey of 409 galaxies selected from the HI Arecibo ALFALFA Survey in the Local Supercluster, including the Virgo cluster. We explore the relations between the stellar mass, the HI mass…

The stellar and neutral hydrogen (HI) mass functions at z~0 are fundamental benchmarks for current models of galaxy evolution. A natural extension of these benchmarks is the two-dimensional distribution of galaxies in the plane spanned by…

星系天体物理 · 物理学 2015-06-23 Natasha Maddox , Kelley M. Hess , Danail Obreschkow , M. J. Jarvis , S. -L. Blyth

In this work, we study the basic statistical properties of HI-selected galaxies extracted from six different semi-analytic models, all run on the same cosmological N-body simulation. One model includes an explicit treatment for the…

星系天体物理 · 物理学 2016-12-21 Anna Zoldan , Gabriella De Lucia , Lizhi Xie , Fabio Fontanot , Michaela Hirschmann

In Dou et al. (2021), we introduced the Fundamental Formation Relation (FFR), a tight relation between specific SFR (sSFR), H$_2$ star formation efficiency (SFE$_{\rm H_2}$), and the ratio of H$_2$ to stellar mass. Here we show that atomic…

Measurements of the atomic hydrogen (HI) properties of high-redshift galaxies are critical to understanding the decline in the star-formation rate (SFR) density of the Universe after its peak $\approx8-11$ Gyr ago. Here, we use $\approx510$…

星系天体物理 · 物理学 2022-08-11 Aditya Chowdhury , Nissim Kanekar , Jayaram N. Chengalur

We investigate the star formation and neutral atomic hydrogen (HI) gas properties of galaxies along three large-scale filaments and two galaxy groups in the wide field around the Virgo cluster. Our goal is to understand how galaxies are…

星系天体物理 · 物理学 2025-05-28 Hyein Yoon , O. Ivy Wong , Aeree Chung , Shan Huang

New HI observations are presented for a complete sample of 109 low luminosity star-forming galaxies taken from the KPNO International Spectroscopic Survey (KISS), the first CCD-based wide-field objective-prism survey for emission-line…

天体物理学 · 物理学 2009-11-07 Janice C. Lee , John J. Salzer , Christopher D. Impey , Trinh X. Thuan , Caryl Gronwall

A sample of 69 galaxies with radial velocities less than 2500 km/s was selected from the HI Parkes All Sky Survey (HIPASS) and imaged in broad band B and R and narrow band H-alpha to deduce details about star formation in nearby disk…

天体物理学 · 物理学 2009-11-10 J. F. Helmboldt , R. A. M. Walterbos , G. D. Bothun , K. O'Neil , W. J. G. de Blok

We use a sample of ~6000 galaxies detected by the Arecibo Legacy Fast ALFA (ALFALFA) 21cm survey, to measure the clustering properties of HI-selected galaxies. We find no convincing evidence for a dependence of clustering on the galactic…

宇宙学与河外天体物理 · 物理学 2015-06-16 Emmanouil Papastergis , Riccardo Giovanelli , Martha P. Haynes , Aldo Rodríguez-Puebla , Michael G. Jones

We use a 0.040 < z < 0.085 sample of 37866 star-forming galaxies from the Fourth Data Release of the Sloan Digital Sky Survey to investigate the dependence of gas-phase chemical properties on stellar mass and environment. The local density,…

天体物理学 · 物理学 2009-06-23 M. Mouhcine , I. K. Baldry , S. P. Bamford

We measure how the atomic gas (HI) fraction ($f_{HI}={\rm \frac{M_{HI}}{M_{*}}}$) of groups and pairs taken as single units vary with average stellar mass ($\langle {\rm M_*} \rangle$) and average star-formation rate ($\langle {\rm SFR}…

The processes regulating star formation in galaxies are thought to act across a hierarchy of spatial scales. To connect extragalactic star formation relations from global and kpc-scale measurements to recent cloud-scale resolution studies,…

We present a new HI mass estimator which relates the HI-to-stellar mass ratio to four galaxy properties: stellar surface mass density, color index $u-r$, stellar mass and concentration index, with the scatter of individual galaxies around…

星系天体物理 · 物理学 2022-12-14 Xiao Li , Cheng Li , H. J. Mo , Ting Xiao , Jing Wang

Observations show that galaxies in galaxy clusters are strongly influenced by their environment. There is growing evidence that some galaxies in groups show similar properties to galaxies in clusters, such as redder colours and gas…

星系天体物理 · 物理学 2014-06-19 Helga Dénes , Virginia A. Kilborn , Bärbel S. Koribalski

We have developed a simple, static model designed to place a very solid lower limit on the star formation rate (SFR) expected in a dwarf disk galaxy, which leads to the prediction of a previously undocumented relation between HI mass, M_HI,…

天体物理学 · 物理学 2007-05-23 Edward N Taylor