English
Related papers

Related papers: The Distance to the Draco Cloud

200 papers

Magnetic fields, while ubiquitous in many astrophysical environments, are challenging to measure observationally. Based on the properties of anisotropy of eddies in magnetized turbulence, the Velocity Gradient Technique is a method…

Aims: We compare the far-infrared to sub-millimetre dust emission properties measured in high Galactic latitude cirrus with those determined in a sample of 204 late-type DustPedia galaxies. The aim is to verify if it is appropriate to use…

By correcting the redshift--dependent distances for peculiar motions through a number of peculiar velocity field models, we recover the true distances of a wide, all-sky sample of nearby galaxies (~ 6400 galaxies with velocities cz<5500…

Astrophysics · Physics 2009-10-30 C. Marinoni , P. Monaco , G. Giuricin , B. Costantini

We use archival UV absorption-line data from HST/STIS to statistically analyse the absorption characteristics of the high-velocity clouds (HVCs) in the Galactic halo towards more than 40 extragalactic background sources. We determine…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Peter Herenz , Philipp Richter , Jane C. Charlton , Joseph R. Masiero

We measure the Galactic rotation curve and its first two vertical derivatives in the first and fourth quadrants of the Milky Way using the 21 cm VGPS and SGPS. We find tangent velocities of the atomic gas as a function of galactic longitude…

Astrophysics · Physics 2009-06-23 E. S. Levine , Carl Heiles , Leo Blitz

The circumgalactic medium (CGM) of the Milky Way is mostly obscured by nearby gas in position-velocity space because we reside inside the Galaxy. Substantial biases exist in most studies on the Milky Way's CGM that focus on easier-to-detect…

We present a study of the ionization and thermal structure of neutral hydrogen clouds located in the Galactic halo, immersed in the extragalactic background radiation field, and supposed to be in pressure equilibrium with the surrounding…

Astrophysics · Physics 2009-10-22 Andrea Ferrara , George B. Field

CONTEXT. The maximum size of the Galactic stellar disk is not yet known. Some studies have suggested an abrupt drop-off of the stellar density of the disk at Galactocentric distances $R\gtrsim 15$ kpc, which means that in practice no disk…

Astrophysics of Galaxies · Physics 2018-05-09 M. Lopez-Corredoira , C. Allende Prieto , F. Garzon , H. Wang , C. Liu , L. Deng

The dispersion measures (DMs) of fast radio bursts (FRBs) are a valuable tool for probing the baryonic content of the intergalactic and the circumgalactic medium of the intervening galaxies along the sightlines. However, interpreting the…

Astrophysics of Galaxies · Physics 2025-02-26 Jiale Wang , Zheng Zhou , Xiaochuan Jiang , Taotao Fang

We present an expanded distance catalog for 1,710 molecular cloud structures identified in the Bolocam Galactic Plane Survey (BGPS) version 2, representing a nearly threefold increase over the previous BGPS distance catalog. We additionally…

Context. Three kilometer-sized interstellar objects (ISOs) have been detected transiting the Solar System, and spacecraft have directly measured micrometer-scale interstellar dust (ISD). Yet no intermediate-size interstellar meteoroids have…

Earth and Planetary Astrophysics · Physics 2025-11-20 Eloy Peña-Asensio , Darryl Z. Seligman

We introduce a potentially powerful method for constraining or discovering a thin dark matter disk in the Milky Way. The method relies on the relationship between the midplane densities and scale heights of interstellar gas being determined…

Astrophysics of Galaxies · Physics 2016-09-30 Eric David Kramer , Lisa Randall

We present Arecibo L-band Feed Array 21-cm observations of a sub-complex of HVCs at the tip of the Anti-Center Complex. These observations show morphological details that point to interaction with the ambient halo medium and differential…

Large stellar surveys are sensitive to interstellar dust through the effects of reddening. Using extinctions measured from photometry and spectroscopy, together with three-dimensional (3D) positions of individual stars, it is possible to…

Astrophysics of Galaxies · Physics 2018-10-31 Sara Rezaei Kh. , Coryn A. L. Bailer-Jones , David W. Hogg , Mathias Schultheis

FUSE spectra of 100 extragalactic objects are analyzed to obtain measures of O VI absorption along paths through the Milky Way thick disk/halo. Strong O VI absorption over the approximate velocity range from -100 to 100 km/s reveals a…

We present a new distance determination to the Large and Small Magellanic Clouds using the newly developed red clump stars method (Paczynski and Stanek 1998). This new, single-step, Hipparcos calibrated method seems to be one of the most…

Astrophysics · Physics 2007-05-23 A. Udalski , M. Szymanski , M. Kubiak , G. Pietrzynski , P. Wozniak , K. Zebrun

The content of interstellar clouds, in particular the inventory of diffuse molecular gas, remains uncertain. We identified a sample of isolated clouds, approximately 100 solar masses in size, and used the dust content to estimate the total…

Astrophysics of Galaxies · Physics 2017-07-25 William T. Reach , Carl Heiles , Jean-Philippe Bernard

In our local Galactic neighborhood, molecular clouds are best studied using a combination of dust measurements, to determine robust masses, sizes and internal structures of the clouds, and molecular-line observations to determine cloud…

Astrophysics of Galaxies · Physics 2020-02-19 Jan Forbrich , Charles J. Lada , Sébastien Viaene , Glen Petitpas

Observations of Galactic H I gas for seven targeted regions at intermediate Galactic latitude are presented at 1' angular resolution using data from the DRAO Synthesis Telescope (ST) and the Green Bank Telescope (GBT). The DHIGLS data are…

Astrophysics of Galaxies · Physics 2017-01-18 K. Blagrave , P. G. Martin , G. Joncas , R. Kothes , J. Stil , M. -A. Miville-Deschenes , Felix J. Lockman , A. R. Taylor

We have used infrared and radio observations to search for a dwarf galaxy associated with the high-velocity cloud (HVC) known as Complex H. Complex H is a large (> 400 deg^2) and probably nearby (d = 27 kpc) HVC whose location in the…

Astrophysics · Physics 2009-11-13 Joshua D. Simon , Leo Blitz , Andrew A. Cole , Martin D. Weinberg , Martin Cohen