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We present an algorithm ({\scshape mead}, for `Mapping Extinction Against Distance') which will determine intrinsic ($r' - i'$) colour, extinction, and distance for early-A to K4 stars extracted from the IPHAS $r'/i'/\Halpha$ photometric…

Stellar distances constitute a foundational pillar of astrophysics. The publication of 1.47 billion stellar parallaxes from Gaia is a major contribution to this. Yet despite Gaia's precision, the majority of these stars are so distant or…

Solar and Stellar Astrophysics · Physics 2021-02-26 C. A. L. Bailer-Jones , J. Rybizki , M. Fouesneau , M. Demleitner , R. Andrae

Studies of the properties of the inner Galactic Bulge depend strongly on the assumptions about the interstellar extinction. Most of the extinction maps available in the literature lack the information about the distance. We combine the…

Astrophysics of Galaxies · Physics 2015-06-12 B. Q. Chen , M. Schultheis , B. W. Jiang , O. A. Gonzalez , A. C. Robin , M. Rejkuba , D. Minniti

We have used the field stars from the open cluster survey BOCCE, to study three low-latitude fields imaged with the Canada-France-Hawaii telescope (CFHT), with the aim of better understanding the Galactic structure in those directions. Due…

Astrophysics · Physics 2009-11-13 M. Cignoni , M. Tosi , A. Bragaglia , J. S. Kalirai , D. S. Davis

We update the method of the Holmberg & Flynn (2000) study, including an updated model of the Milky Way's interstellar gas, radial velocities, an updated reddening map, and a careful statistical analysis, to bound the allowed surface density…

Astrophysics of Galaxies · Physics 2016-06-22 Eric David Kramer , Lisa Randall

We present an exploration of the Milky Way's structural parameters using an all-sky sample of RC giants to map the stellar density from the Galactic disc beyond 3 kpc. These evolved giants are considered to be standard candles due to their…

Extinction remains one of the most reliable methods of measuring column density of nearby Galactic interstellar clouds. The current and ongoing near-infrared surveys enable the mapping of extinction over large sky areas. We produce allsky…

Astrophysics of Galaxies · Physics 2015-12-16 M. Juvela , J. Montillaud

An automated search for star clusters close to the Galactic plane (|b| < 5 deg) was carried out on the Point Source Catalogue of the DENIS survey. 44% of the Galactic plane have been observed and calibrated. The method allowed to retrieve…

Astrophysics · Physics 2009-11-07 C. Reyle , A. C. Robin

We test the recently published all-sky reddening map of Schlegel, Finkbeiner & Davis (1998 [SFD]) using the extinction study of a region in the Taurus dark cloud complex by Arce & Goodman (1999 [AG]). In their study, AG use four different…

Astrophysics · Physics 2009-08-21 Hector G. Arce , Alyssa A. Goodman

We use Gaia photometry and astrometry to estimate the vertical spatial structure of the Milky Way at the Solar radius, formally accounting for sample incompleteness (the selection function) and parallax measurement uncertainty. Our results…

Astrophysics of Galaxies · Physics 2022-02-16 Andrew Everall , Vasily Belokurov , N. Wyn Evans , Douglas Boubert , Robert J. J. Grand

Most of what we know about the formation of stars, and essentially everything we know about the formation of planets, comes from observations of our solar neighborhood within 2 kpc of the Sun. Before 2018, accurate distance measurements…

Astrophysics of Galaxies · Physics 2023-08-28 Catherine Zucker , João Alves , Alyssa Goodman , Stefan Meingast , Phillip Galli

We present a uniform catalog of accurate distances to local molecular clouds informed by the Gaia DR2 data release. Our methodology builds on that of Schlafly et al. (2014). First, we infer the distance and extinction to stars along…

This work describes a full Bayesian analysis of the Nearby Universe as traced by galaxies of the 2M++ survey. The analysis is run in two sequential steps. The first step self-consistently derives the luminosity dependent galaxy biases, the…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-09 Guilhem Lavaux , Jens Jasche

We present three 14400 square degree relative extinction maps of the Galactic Plane (|b|<20degrees) obtained from 2MASS using accumulative star counts (Wolf diagrams). This method is independent of the colour of the stars and the variation…

Astrophysics · Physics 2009-11-10 D. Froebrich , T. P. Ray , G. C. Murphy , A. Scholz

Circumstellar disks of gas and dust are naturally formed from contracting pre-stellar molecular cores during the star formation process. To study various dynamical and chemical processes that take place in circumstellar disks prior to their…

Astrophysics of Galaxies · Physics 2017-09-27 Eduard I. Vorobyov , Yaroslav N. Pavlyuchenkov

Dust extinction is one of the most reliable tracers of the gas distribution in the Milky Way. The near-infrared (NIR) Vista Variables in the Via Lactea (VVV) survey enables extinction mapping based on stellar photometry over a large area in…

Astrophysics of Galaxies · Physics 2022-11-16 Miaomiao Zhang , Jouni Kainulainen

Accurate astrometric and photometric measurements from Gaia have led to the construction of 3D dust extinction maps which can now be used for estimating the integrated extinctions of Galactic sources located within 5 kpc. These maps based…

Solar and Stellar Astrophysics · Physics 2024-10-15 Snehalata Sahu , Pier-Emmanuel Tremblay , Rosine Lallement , Seth Redfield , Boris T. Gaensicke

Estimates of interstellar extinction are essential in a broad range of astronomical research. In the last decades, several maps and models of the large scale interstellar extinction in the Galaxy have been published. However, these maps and…

We infer the gravitational potential of the Galactic disk by analysing the phase-space densities of 120 stellar samples in 40 spatially separate sub-regions of the solar neighbourhood, using Gaia's second data release (DR2), in order to…

Astrophysics of Galaxies · Physics 2021-02-10 Axel Widmark , Pablo Fernández de Salas , Giacomo Monari

A suite of vast stellar surveys mapping the Milky Way, culminating in the Gaia mission, is revolutionizing the empirical information about the distribution and properties of stars in the Galactic stellar disk. We review and lay out what…

Astrophysics of Galaxies · Physics 2013-12-04 Hans-Walter Rix , Jo Bovy
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