author={Laurent Chemin and Claude Carignan and Tyler J. Foster},
  journal={The Astrophysical Journal},
  pages={1395 - 1415}
We present a new deep 21 cm survey of the Andromeda galaxy, based on high-resolution observations performed with the Synthesis Telescope and the 26 m antenna at the Dominion Radio Astrophysical Observatory. The H i distribution and kinematics of the disk are analyzed and basic dynamical properties are given. The rotation curve is measured out to 38 kpc, showing a nuclear peak at 340 km s−1, a dip at 202 km s−1 around 4 kpc, two distinct flat parts at 264 km s−1 and 230 km s−1, and an increase… 

H i Kinematics and Mass Distribution of Messier 33

A new deep H i survey of the galaxy Messier 33 is presented, based on observations obtained at the Dominion Radio Astrophysical Observatory. We observe a perturbed outer gas distribution and

A wide-field H I mosaic of Messier 31 - II. The disk warp, rotation, and the dark matter halo

Aims. We test cosmological models of structure formation using the rotation curve of the nearest spiral galaxy, M 31, determined using a recent deep, full-disk 21-cm imaging survey smoothed to 466 pc

H i observations of IC 10 with the DRAO synthesis telescope

H i observations of the nearby blue compact dwarf galaxy IC 10 obtained with the Dominion Radio Astrophysical Observatory synthesis telescope, for a total integration of ∼1000 h, are presented. We

The magnetic field structure of the central region in M 31

Context. The Andromeda Galaxy (M 31) is the nearest grand-design spiral galaxy. Thus far, most studies in the radio regime concentrated on the 10 kpc ring. The central region of M 31 has


The stellar kinematics of galactic disks are key to constraining disk formation and evolution processes. In this paper, for the first time, we measure the stellar age–velocity dispersion correlation

Evidence for non-axisymmetry in M31 from wide-field kinematics of stars and gas

As the nearest large spiral galaxy, M31 provides a unique opportunity to learn about the structure and evolutionary history of this galaxy type in great detail. Among the many observing programs

Possible detection of the M 31 rotation in WMAP data

Data on the cosmic microwave background (CMB) radiation by the Wilkinson Microwave Anisotropy Probe (WMAP) had a profound impact on the understanding of a variety of physical processes in the early

The Herschel exploitation of local galaxy andromeda (HELGA): IV. Dust scaling relations at sub-kpc resolution

Context. Dust and stars play a complex game of interactions in the interstellar medium and around young stars. The imprints of these processes are visible in scaling relations between stellar

A cold-gas reservoir to fuel the M 31 nuclear black hole and stellar cluster

With IRAM-30 m/HERA, we have detected CO(2–1) gas complexes within 30 arcsec (∼100 pc) from the center of M 31 that amount to a minimum total mass of 4.2×10 4 M� (one third of the positions are


We demonstrate the presence of an extended and massive circumgalactic medium (CGM) around Messier 31 using archival HST Cosmic Origins Spectrograph ultraviolet spectroscopy of 18 QSOs projected



Deep H I Survey of the Spiral Galaxy NGC 2403

High-sensitivity H I observations of the nearby spiral galaxy NGC 2403 obtained with the VLA are presented and discussed. The properties of the extended, differentially rotating H I layer with its H

On the Continuing Formation of the Andromeda Galaxy: Detection of H I Clouds in the M31 Halo

Green Bank Telescope 21 cm observations have revealed a faint, yet extensive H I cloud population surrounding the Andromeda galaxy (M31). The newfound objects are likely analogs to the high-velocity

The Cold Gaseous Halo of NGC 891

We present H I observations of the edge-on galaxy NGC 891. These are among the deepest ever performed on an external galaxy. They reveal a huge gaseous halo, much more extended than seen previously

Accurate Determination of the Mass Distribution in Spiral Galaxies. II. Testing the Shape of Dark Halos

New high-resolution Fabry-Perot data at the Canada-France-Hawaii Telescope combined with published VLA 21 cm observations are used to determine the mass distribution of NGC 3109 and IC 2574. The

Modeling the Gas Flow in the Bar of NGC 1365

We present new observations of the strongly barred galaxy NGC 1365, including new photometric images and Fabry-Perot spectroscopy, as well as a detailed reanalysis of the neutral hydrogen

On the Accretion Origin of a Vast Extended Stellar Disk around the Andromeda Galaxy

We present the discovery of an inhomogenous, low surface brightness, extended disklike structure around the Andromeda galaxy (M31) based on a large kinematic survey of more than 2800 stars with the

HI holes and high-velocity clouds in the spiral galaxy NGC 6946

We present a study of the distribution and kinematics of the neutral gas in the low-inclination Scd galaxy NGC 6946. The galaxy has been observed for 192 h at 21-cm with the Westerbork Synthesis

Westerbork H I observations of high-velocity clouds near M 31 and M 33

We have undertaken high-resolution follow-up of a sample of high velocity H  clouds apparently associated with M 31. Our sample was chosen from the population of high-velocity clouds (HVCs) detected

Investigating the Andromeda stream — I. Simple analytic bulge—disc—halo model for M31

This paper is the first in a series which studies interactions between M31 and its satellites, including the origin of the giant southern stream. We construct accurate yet simple analytic models for

Metallicity and Kinematics of M31’s Outer Stellar Halo from a Keck Spectroscopic Survey

We present first results from a spectroscopic survey designed to examine the metallicity and kinematics of individual red giant branch stars in the outer halo of the Andromeda spiral galaxy (M31).