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We present optical and millimetric data for 47 intermediate Hubble type spiral galaxies located either in dense environments or in the field. We compare correlations between global parameters, such as far-infrared luminosity, blue…

Astrophysics · Physics 2009-11-07 Duilia F. de Mello , Marcio A. G. Maia , Tommy Wiklind

We study the evolution of the galactic spin using data of high redshift galaxies in the fields of the Great Observatories Origins Deep Survey (GOODS). Through simple dynamical considerations we estimate the spin for the disc galaxies in our…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Bernardo Cervantes-Sodi , X. Hernandez , Ho Seong Hwang , Changbom Park , Damien Le Borgne

We present a comparison between ionized gas and stellar kinematics for a sample of 5 early-to-intermediate disc galaxies. We measured the major axis V and sigma radial profiles for both gas and stars, and the h3 and h4 radial profiles of…

We compute the angular momentum, the spin parameter and the related distribution function for Dark Matter halos hosting a spiral galaxy. We base on scaling laws, inferred from observations, that link the properties of the galaxy to those of…

Astrophysics · Physics 2009-11-13 Chiara Tonini , Andrea Lapi , Francesco Shankar , Paolo Salucci

In order to study whether there is any correlation between nuclear activities, gas content, and the environment where galaxies reside, we have obtained optical and millimetric spectra for a well-defined sample of intermediate Hubble type…

Astrophysics · Physics 2009-11-07 Duilia F. de Mello , Tommy Wiklind , Marcio A. G. Maia

We characterize stellar, gas, and dark matter mass distributions for 17 nearby massive disk galaxies from the PHANGS sample. This allows us to compute the gravitational potential that vertically confines the interstellar gas and determines…

A statistical study of global galaxy parameters can help to improve our understanding of galaxy formation processes. In this paper we present the analysis of global galaxy parameters based on optical and near-infrared observations of a…

Astrophysics · Physics 2009-10-30 R. de Grijs

The kinematic morphology-density relation of galaxies is normally attributed to a changing distribution of galaxy stellar masses with the local environment. However, earlier studies were largely focused on slow rotators; the dynamical…

In galactic disks, galactic rotation sets the bulk motion of gas, and its energy and momentum can be transferred toward small scales. Additionally, in the interstellar medium, random and noncircular motions arise from stellar feedback,…

Galaxies are observed to obey a strict set of dynamical scaling relations. We review these relations for rotationally supported disk galaxies spanning many decades in mass, surface brightness, and gas content. The behavior of these widely…

Astrophysics of Galaxies · Physics 2020-05-20 Stacy McGaugh , Federico Lelli , Pengfei Li , Jim Schombert

We present molecular gas mass estimates for a sample of 13 local galaxies whose kinematic and star forming properties closely resemble those observed in $z\approx 1.5$ main-sequence galaxies. Plateau de Bure observations of the CO[1-0]…

The spin, $\lambda$, of dark matter (DM) halos in cosmological simulations follows a log normal distribution and has little correlation with galaxy observables. As such, there is currently no way to infer the $\lambda$ parameter of…

Astrophysics of Galaxies · Physics 2021-12-22 A. Obreja , T. Buck , A. V. Macciò

We consider the relationship between the total HI mass in late-type galaxies and the kinematic properties of their disks. The mass $M_HI$ for galaxies with a wide variety of properties, from dwarf dIrr galaxies with active star formation to…

Astrophysics · Physics 2009-11-11 A. V. Zasov , A. A. Smirnova

A comprehensive statistical analysis of the relationship between the chemical and spatially kinematic parameters of the globular clusters of the Galaxy has been performed. The data of the author's compilation catalog contain astrophysical…

Astrophysics of Galaxies · Physics 2020-02-26 V. A. Marsakov , V. V. Koval' , M. L. Gozha

We combine constraints on the galaxy-dark matter connection with structural and dynamical scaling relations to investigate the angular momentum content of disc galaxies. For haloes with masses in the interval 10^{11.3} < M_vir/M_sun <…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Aaron A. Dutton , Frank C. van den Bosch

Both observations and modelling of magnetic fields in the diffuse interstellar gas of spiral galaxies are well developed but the theory has been confronted with observations for only a handful of individual galaxies. There is now sufficient…

Astrophysics of Galaxies · Physics 2015-06-23 Cameron Van Eck , Jo-Anne Brown , Anvar Shukurov , Andrew Fletcher

The rotational properties of the visible and dark components of low-mass disk galaxies (vrot<=100 km/s) are investigated using the Swaters sample. The rotational parameter lambda'=lambda_DM*(j_d/m_d) is determined, where lambda_DM is the…

Astrophysics · Physics 2007-05-23 Andreas Burkert

In these lectures I present a highly opinionated review of the observed patterns of metallicity and element abundance ratios in nearby spiral, irregular, and dwarf elliptical galaxies, with connection to a number of astrophysical issues…

Astrophysics · Physics 2007-05-23 Donald R. Garnett

In this work we present an analysis of the behaviour of galaxies in a four-dimensional parameter space defined by stellar mass, metallicity, star formation rate, and molecular gas mass. We analyse a combined sample of 227 galaxies, which…

Astrophysics of Galaxies · Physics 2016-10-26 M. S. Bothwell , R. Maiolino , C. Cicone , Y. Peng , J. Wagg

We present a quantitative and statistical analysis of the molecular gas morphology in 73 nearby galaxies using high spatial resolution CO ($J$ = 2-1) data obtained from the Atacama Large Millimeter/submillimeter Array (ALMA) by the PHANGS…

Astrophysics of Galaxies · Physics 2024-12-12 Takashi Yamamoto , Daisuke Iono , Toshiki Saito , Nario Kuno , Sophia K. Stuber , Daizhong Liu , Thomas G. Williams