Search Results - "Blok, W. J. G"
-
1
Radial gas motions in The H i Nearby Galaxy Survey (THINGS)
Published in Monthly notices of the Royal Astronomical Society (11-04-2016)“…The study of 21 cm line observations of atomic hydrogen allows detailed insight into the kinematics of spiral galaxies. We use sensitive high-resolution Very…”
Get full text
Journal Article -
2
EVIDENCE FOR A CLUMPY, ROTATING GAS DISK IN A SUBMILLIMETER GALAXY AT z = 4
Published in The Astrophysical journal (20-11-2012)“…We present Karl G. Jansky Very Large Array observations of the CO(2-1) emission in the z = 4.05 submillimeter galaxy (SMG) GN20. These high-resolution data…”
Get full text
Journal Article -
3
Local Group dSph radio survey with ATCA – II. Non-thermal diffuse emission
Published in Monthly notices of the Royal Astronomical Society (21-04-2015)“…Our closest neighbours, the Local Group dwarf spheroidal (dSph) galaxies, are extremely quiescent and dim objects, where thermal and non-thermal diffuse…”
Get full text
Journal Article -
4
Physical Properties of Molecular Clouds at 2 pc Resolution in the Low-metallicity Dwarf Galaxy NGC 6822 and the Milky Way
Published in The Astrophysical journal (01-02-2017)“…We present the Atacama Large Millimeter/submillimeter Array survey of CO(2-1) emission from the 1/5 solar metallicity, Local Group dwarf galaxy NGC 6822. We…”
Get full text
Journal Article -
5
The spatially resolved relation between dust, gas, and metal abundance with the TYPHOON survey
Published in Monthly notices of the Royal Astronomical Society (04-11-2024)“…ABSTRACT We present the spatially resolved relationship between the dust-to-gas mass ratio (DGR) and gas-phase metallicity ($Z_{\rm gas}$ or 12 + log(O/H))…”
Get full text
Journal Article -
6
A High-resolution Mosaic of the Neutral Hydrogen in the M81 Triplet
Published in The Astrophysical journal (20-09-2018)“…We present a 3° × 3°, 105-pointing, high-resolution neutral hydrogen (H i) mosaic of the M81 galaxy triplet, (including the main galaxies M81, M82, and NGC…”
Get full text
Journal Article -
7
The Northern HIPASS catalogue - data presentation, completeness and reliability measures
Published in Monthly notices of the Royal Astronomical Society (01-10-2006)“…The Northern HIPASS catalogue (NHICAT) is the northern extension of the HIPASS catalogue, HICAT. This extension adds the sky area between the declination…”
Get full text
Journal Article -
8
The H i content of star-forming galaxies at z= 0.24
Published in Monthly notices of the Royal Astronomical Society (11-04-2007)“…We use observations from the Giant Metrewave Radio Telescope (GMRT) to measure the atomic hydrogen gas content of star-forming galaxies at z= 0.24 (i.e. a…”
Get full text
Journal Article -
9
Morphology and star formation in nearby low surface brightness galaxies
Published in Monthly notices of the Royal Astronomical Society (01-03-2006)“…We present observations (B, R, K, Hα and H i) of six nearby low surface brightness galaxies (LSBGs). They show an astonishing amount of variety; while some…”
Get full text
Journal Article -
10
The dark matter content of the blue compact dwarf NGC 2915
Published in Monthly notices of the Royal Astronomical Society (01-06-2010)“…NGC 2915 is a nearby blue compact dwarf with the H i properties of a late-type spiral. Its large, rotating H i disc (extending out to R∼ 22 B-band…”
Get full text
Journal Article -
11
ΛCDM Satellites and H I Companions—the Arecibo ALFA Survey of NGC 2903
Published in The Astrophysical journal (20-02-2009)“…We have conducted a deep, complete H I survey, using Arecibo/Arecibo L-band Feed Array (ALFA), of a field centered on the nearby, isolated galaxy, NGC 2903,…”
Get full text
Journal Article -
12
ON THE ORIGIN OF THE SUPERGIANT H I SHELL AND PUTATIVE COMPANION IN NGC 6822
Published in The Astrophysical journal (10-03-2012)“…We present new Hubble Space Telescope Advanced Camera for Surveys imaging of six positions spanning 5.8 kpc of the H I major axis of the Local Group dIrr NGC…”
Get full text
Journal Article -
13
The Rotation Velocity Attributable to Dark Matter at Intermediate Radii in Disk Galaxies
Published in The Astrophysical journal (10-04-2007)“…We examine the amplitude of the rotation velocity that can be attributed to the dark matter halos of disk galaxies, focusing on well-measured intermediate…”
Get full text
Journal Article -
14
A high-resolution rotation curve of NGC 6822: a test-case for cold dark matter
Published in Monthly notices of the Royal Astronomical Society (21-03-2003)“…We present high-resolution rotation curves of the Local Group dwarf irregular galaxy NGC 6822 obtained with the Australia Telescope Compact Array. Our best…”
Get full text
Journal Article -
15
Oxygen abundances and chemical evolution in low surface brightness galaxies
Published in Monthly notices of the Royal Astronomical Society (11-12-2004)“…ABSTRACT We report the oxygen abundances of the H ii regions of a sample of low surface brightness (LSB) galaxies. We provide analytic functions describing…”
Get full text
Journal Article -
16
The atomic-to-molecular hydrogen transition in the TNG50 simulation: Using realistic UV fields to create spatially resolved H i maps
Published in Monthly notices of the Royal Astronomical Society (31-03-2023)“…ABSTRACT Cold gas in galaxies provides a crucial test to evaluate the realism of cosmological hydrodynamical simulations. To extract the atomic and molecular…”
Get full text
Journal Article -
17
Quantified H i morphology - II. Lopsidedness and interaction in WHISP column density maps
Published in Monthly notices of the Royal Astronomical Society (01-10-2011)“…Lopsidedness of the gaseous disc of spiral galaxies is a common phenomenon in disc morphology, profile and kinematics. Simultaneously, the asymmetry of a…”
Get full text
Journal Article -
18
Mass Density Profiles of Low Surface Brightness Galaxies
Published in The Astrophysical journal (01-05-2001)Get full text
Journal Article -
19
The Arecibo Galaxy Environment Survey: precursor observations of the NGC 628 group
Published in Monthly notices of the Royal Astronomical Society (01-10-2006)“…The Arecibo Galaxy Environment Survey (AGES) is one of several H i surveys utilizing the new Arecibo L-band Feed Array (ALFA) fitted to the 305-m radio…”
Get full text
Journal Article -
20
Mass Models for Low Surface Brightness Galaxies with High-Resolution Optical Velocity Fields
Published in The Astrophysical journal (01-04-2008)“…We present high-resolution optical velocity fields from DensePak integral field spectroscopy, along with derived rotation curves, for a sample of low surface…”
Get full text
Journal Article