Martin A. Zwaan

The Halo Occupation Distribution of HI Galaxies (2009)

Wyithe, Stuart, Brown, Michael J. I., Zwaan, Martin A., Meyer, Martin J.

We perform an analysis of the spatial clustering properties of HI selected galaxies from the HI Parkes All Sky Survey (HIPASS) using the formalism of the halo occupation distribution (HOD). The...

Evidence for a nonuniform initial mass function in the local universe (2009)

Meurer, Gerhardt R., Wong, O. I., Kim, J. H., Hanish, D. J., Heckman, Timothy M., Werk, Jessica K., ...

Many of the results in modern astrophysics rest on the notion that the initial mass function (IMF) is universal. Our observations of a sample of H I selected galaxies in the light of Hα and the...

Evidence for a nonuniform initial mass function in the local universe (2009)

Meurer, Gerhardt R., Wong, O. I., Kim, J. H., Hanish, D. J., Heckman, Timothy M., Werk, Jessica K., ...

Many of the results in modern astrophysics rest on the notion that the initial mass function (IMF) is universal. Our observations of a sample of H I selected galaxies in the light of Hα and the...

The radio properties of optically obscured Spitzer sources (2008)

Magliocchetti, Manuela, Andreani, Paola, Zwaan, Martin A.

This paper analyses the radio properties of a subsample of optically obscured (R>25.5) galaxies observed at 24um by the Spitzer Space Telescope within the First Look Survey. 96 F[24um]>0.35 mJy...

The H i Column Density Distribution Function at z = 0: the Connection to Damped Ly Statistics (2007)

Martin A. Zwaan, Frank H. Briggs

We present a measurement of the H i column density distribution function [f(N HI)] at the present epoch for column densities> 10 20 cm 2. These high column densities compare to those measured in...

The survey for ionization in neutral gas galaxies III: diffuse, warm ionized medium and escape of ionizing radiation (2007)

Oey, M. Sally, Meurer, Gerhardt R., Yelda, Sylvana, Furst, E. J., Caballero-Nieves, S. M., Hanish, D. J., ...

We use the first data release from the SINGG Hα survey of H I-selected galaxies to study the quantitative behavior of the diffuse, warm ionized medium (WIM) across the range of properties...

The survey for ionization in neutral gas galaxies III: diffuse, warm ionized medium and escape of ionizing radiation (2007)

Oey, M. Sally, Meurer, Gerhardt R., Yelda, Sylvana, Furst, E. J., Caballero-Nieves, S. M., Hanish, D. J., ...

We use the first data release from the SINGG Hα survey of H I-selected galaxies to study the quantitative behavior of the diffuse, warm ionized medium (WIM) across the range of properties...

The Weak Clustering of Gas-Rich Galaxies (2006)

Meyer, Martin J., Zwaan, Martin A., Webster, Rachel L., Brown, Michael J. I., Staveley-Smith, Lister

We examine the clustering properties of HI-selected galaxies through an analysis of the HI Parkes All-Sky Survey Catalogue (HICAT) two-point correlation function. Various sub-samples are extracted...

NGC 922 : a new drop-through ring galaxy (2006)

Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...

We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...

NGC 922 : a new drop-through ring galaxy (2006)

Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...

We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...

NGC 922 : a new drop-through ring galaxy (2006)

Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...

We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...

NGC 922 : a new drop-through ring galaxy (2006)

Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...

We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...

NGC 922 : a new drop-through ring galaxy (2006)

Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...

We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...

The HIPASS catalogue - II. Completeness, reliability and parameter accuracy (2004)

Zwaan, Martin A., Meyer, Martin J., Webster, Rachel L., Staveley-Smith, Lister, Drinkwater, Michael J., Barnes, David G., ...

The HI Parkes All Sky Survey (HIPASS) is a blind extragalactic HI 21-cm emission-line survey covering the whole southern sky from declination -90° to +25°. The HIPASS catalogue (HICAT), containing...

The HIPASS catalogue - II. Completeness, reliability and parameter accuracy (2004)

Zwaan, Martin A., Meyer, Martin J., Webster, Rachel L., Staveley-Smith, Lister, Drinkwater, Michael J., Barnes, David G., ...

The HI Parkes All Sky Survey (HIPASS) is a blind extragalactic HI 21-cm emission-line survey covering the whole southern sky from declination -90° to +25°. The HIPASS catalogue (HICAT), containing...

The HIPASS catalogue - II. Completeness, reliability and parameter accuracy (2004)

Zwaan, Martin A., Meyer, Martin J., Webster, Rachel L., Staveley-Smith, Lister, Drinkwater, Michael J., Barnes, David G., ...

The HI Parkes All Sky Survey (HIPASS) is a blind extragalactic HI 21-cm emission-line survey covering the whole southern sky from declination -90° to +25°. The HIPASS catalogue (HICAT), containing...

The HIPASS catalogue - II. Completeness, reliability and parameter accuracy (2004)

Zwaan, Martin A., Meyer, Martin J., Webster, Rachel L., Staveley-Smith, Lister, Drinkwater, Michael J., Barnes, David G., ...

The HI Parkes All Sky Survey (HIPASS) is a blind extragalactic HI 21-cm emission-line survey covering the whole southern sky from declination -90° to +25°. The HIPASS catalogue (HICAT), containing...

The HIPASS catalogue - II. Completeness, reliability and parameter accuracy (2004)

Zwaan, Martin A., Meyer, Martin J., Webster, Rachel L., Staveley-Smith, Lister, Drinkwater, Michael J., Barnes, David G., ...

The HI Parkes All Sky Survey (HIPASS) is a blind extragalactic HI 21-cm emission-line survey covering the whole southern sky from declination -90° to +25°. The HIPASS catalogue (HICAT), containing...

The HIPASS catalogue - II. Completeness, reliability and parameter accuracy (2004)

Zwaan, Martin A., Meyer, Martin J., Webster, Rachel L., Staveley-Smith, Lister, Drinkwater, Michael, ...

The HI Parkes All Sky Survey (HIPASS) is a blind extragalactic HI 21-cm emission-line survey covering the whole southern sky from declination −90◦ to +25◦. The HIPASS catalogue (HICAT),...

Constraints on the Space Density of Extragalactic HVCs (2000)

Zwaan, Martin A.

High Velocity Clouds (HVCs) have recently attracted renewed attention as being long lived, massive dark matter dominated clouds of primordial composition distributed throughout the Local Group. In...

HI Column Density Distribution Function at z =0: Connection to Damped Lyα Statistics (1998)

Martin A. Zwaan, Frank H. Briggs

Abstract: We present a measurement of the HI column density distribution function f(NHI) at the present epoch for column densities> 10 20 cm −2. These high column densities compare to those...