English
Related papers

Related papers: The cosmic atomic hydrogen mass density as a funct…

200 papers

Using a spectral stacking technique, we measure the neutral hydrogen (HI) properties of a sample of galaxies at $z < 0.11$ across 35 pointings of the Westerbork Synthesis Radio Telescope (WSRT). The radio data contains 1,895 galaxies with…

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…

Cosmology and Nongalactic Astrophysics · Physics 2023-09-14 Apurba Bera , Nissim Kanekar , Jayaram N. Chengalur , Jasjeet S. Bagla

We apply a spectral stacking technique to Westerbork Synthesis Radio Telescope observations to measure the neutral atomic hydrogen content (HI) of nearby galaxies in and around galaxy groups at $z < 0.11$. Our sample includes 577…

Measuring the HI-halo mass scaling relation (HIHM) is fundamental to understanding the role of HI in galaxy formation and its connection to structure formation. While direct measurements of the HI mass in haloes are possible using…

We have used the upgraded Giant Metrewave Radio Telescope to carry out a deep (117 on-source hours) L-band observation of the Extended Groth Strip, to measure the average neutral hydrogen (HI) mass and median star formation rate (SFR) of…

Astrophysics of Galaxies · Physics 2019-09-16 Apurba Bera , Nissim Kanekar , Jayaram N. Chengalur , Jasjeet S. Bagla

We use the 21 cm emission line data from the DINGO-VLA project to study the atomic hydrogen gas H\,{\textsc i} of the Universe at redshifts $z<0.1$. Results are obtained using a stacking analysis, combining the H\,{\textsc i} signals from…

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…

Cosmology and Nongalactic Astrophysics · Physics 2013-10-24 Jacinta Delhaize , Martin Meyer , Lister Staveley-Smith , Brian Boyle

We use the Giant Metrewave Radio Telescope (GMRT) Cold-HI AT $z\approx1$ (CAT$z1$) survey, a 510 hr HI 21cm emission survey of galaxies at $z=0.74-1.45$, to report the first measurements of atomic hydrogen (HI) scaling relations at…

Astrophysics of Galaxies · Physics 2022-12-14 Aditya Chowdhury , Nissim Kanekar , Jayaram Chengalur

It is well known that both the star formation rate and the cold gas content of a galaxy depend on the local density out to distances of a few Megaparsecs. In this paper, we compare the environmental density dependence of the atomic gas mass…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Silvia Fabello , Guinevere Kauffmann , Barbara Catinella , Cheng Li , Riccardo Giovanelli , Martha P. Haynes

We measure the neutral atomic hydrogen (HI) gas content of field galaxies at intermediate redshifts of z ~ 0.1 and z ~ 0.2 using hydrogen 21-cm emission lines observed with the Westerbork Synthesis Radio Telescope (WSRT). In order to make…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Jonghwan Rhee , Martin A. Zwaan , Frank H. Briggs , Jayaram N. Chengalur , Philip Lah , Tom Oosterloo , Thijs van der Hulst

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…

Cosmology and Nongalactic Astrophysics · Physics 2020-03-11 Marta Spinelli , Anna Zoldan , Gabriella De Lucia , Lizhi Xie , Matteo Viel

The improved sensitivity of interferometric facilities to the 21-cm line of atomic hydrogen (HI) enables studies of its properties in galaxies beyond the local Universe. In this work, we perform a 21 cm line spectral stacking analysis…

Spatially resolved HI studies of dwarf galaxies have provided a wealth of precision data. However these high-quality, resolved observations are only possible for handful of dwarf galaxies in the Local Volume. Future HI surveys are unlikely…

Astrophysics of Galaxies · Physics 2018-06-06 A. Lopez-Sanchez , C. D. P. Lagos , T. Young , H. Jerjen

We present the results of HI spectral stacking analysis of Giant Metrewave Radio Telescope (GMRT) observations targeting the COSMOS field. The GMRT data cube contains 474 field galaxies with redshifts known from the zCOSMOS-bright 10k…

Astrophysics of Galaxies · Physics 2016-07-27 Jonghwan Rhee , Philip Lah , Jayaram N. Chengalur , Frank H. Briggs , Matthew Colless

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 $\approx510$…

Astrophysics of Galaxies · Physics 2022-08-11 Aditya Chowdhury , Nissim Kanekar , Jayaram N. Chengalur

We propose to employ emission line luminosities obtained via optical spectroscopy to estimate the content of neutral hydrogen (HI) in galaxies. We use the optical spectroscopy data from the Mapping of Nearby Galaxies at APO (MaNGA) survey…

Astrophysics of Galaxies · Physics 2023-12-07 Dmitry Bizyaev

The neutral atomic hydrogen (HI) mass function (HIMF) describes the distribution of the HI content of galaxies at any epoch; its evolution provides an important probe of models of galaxy formation and evolution. Here, we report Giant…

Astrophysics of Galaxies · Physics 2022-11-30 Apurba Bera , Nissim Kanekar , Jayaram N. Chengalur , Jasjeet S. Bagla

We study the atomic neutral hydrogen (HI) content of $\sim$1600 galaxies up to $z \sim 0.1$ using stacking techniques. The observations were carried out with the Westerbork Synthesis Radio Telescope (WSRT) in the area of the SDSS South…

Astrophysics of Galaxies · Physics 2015-08-06 K. Gereb , R. Morganti , T. Oosterloo , L. Hoppmann , L. Staveley-Smith

In this paper, we stack neutral atomic hydrogen (HI) spectra for 9,720 star forming galaxies along the mass-metallicity relation. The sample is selected according to stellar mass (10$^9 \leq$ M$_{\star}$/M$_{\odot}\leq$10$^{11}$) and…

Astrophysics of Galaxies · Physics 2017-11-15 Toby Brown , Luca Cortese , Barbara Catinella , Virginia Kilborn

We examine the global HI properties of galaxies in quarter-billion particle cosmological simulations using Gadget-2, focusing on how galactic outflows impact HI content. We consider four outflow models, including a new one (ezw) motivated…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Romeel Davé , Neal Katz , Benjamin D. Oppenheimer , Juna A. Kollmeier , David H. Weinberg
‹ Prev 1 2 3 10 Next ›