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Cosmological surveys must correct their observations for the reddening of extragalactic objects by Galactic dust. Existing dust maps, however, have been found to have spatial correlations with the large-scale structure of the Universe.…

星系天体物理 · 物理学 2023-05-31 Nayantara Mudur , Core Francisco Park , Douglas P Finkbeiner

We present three dimensional maps in monochromatic extinction $A_{\rm 0}$ and the extinction parameter $R_0$ within a few degrees of the Galactic plane. These are inferred using photometry from the Pan-STARRS1 and Spitzer Glimpse surveys of…

We present the first three-dimensional reddening maps of the Large and Small Magellanic Clouds (LMC and SMC) constructed using fundamental-mode RR Lyrae stars from the OGLE-IV survey. By applying a period-amplitude-color relation and a…

星系天体物理 · 物理学 2026-03-17 Shunxuan He , Yang Huang

We present a three dimensional map of extinction in the Northern Galactic Plane derived using photometry from the IPHAS survey. The map has fine angular ($\sim 10$ arcmin) and distance (100 pc) sampling allied to a significant depth…

We present a new sample of 31 CaII(H&K) 3935,3970 absorption line systems with 0.84<z_abs<1.3 discovered in the spectra of Sloan Digital Sky Survey (SDSS) Data Release 3 quasars, together with an analysis of their dust content. The presence…

天体物理学 · 物理学 2009-11-11 Vivienne Wild , Paul C. Hewett

We use spectra of more than 56,000 M dwarfs from the Sloan Digital Sky Survey (SDSS) to create a high-latitude extinction map of the local Galaxy. Our technique compares spectra from the stars in the SDSS Data Release 7 M dwarf sample in…

星系天体物理 · 物理学 2015-05-27 David O. Jones , Andrew A. West , Jonathan B. Foster

We present corrections to the Schlegel, Finkbeiner, Davis (SFD98) reddening maps over the Sloan Digital Sky Survey northern Galactic cap area. To find these corrections, we employ what we dub the "standard crayon" method, in which we use…

星系天体物理 · 物理学 2015-05-19 J. E. G. Peek , Genevieve J. Graves

We analyze the behaviors of reddening vectors in the SDSS photometric system for galaxies of different morphologies, ages, and redshifts. As seen in other photometric systems, the dependence of reddening on the spectral energy distribution…

天体物理学 · 物理学 2009-11-13 Sungsoo S. Kim , Myung Gyoon Lee

The global survey of star clusters in the Milky Way (MWSC) is a comprehensive list of 3061 objects that provides, among other parameters, distances to clusters based on isochrone fitting. The Tycho-Gaia Astrometric Solution (TGAS)…

Recently, a deviation of the Gaia TGAS parallaxes from the asteroseismic ones for giants was found. We show that for parallaxes $\varpi<1.5$ mas it can be explained by a selection effect in favour of bright and luminous giants in the…

太阳与恒星天体物理 · 物理学 2017-07-26 George Gontcharov , Aleksandr Mosenkov

We have obtained accurate dust reddening from far-ultraviolet (UV) to the mid-infrared (IR) for up to 5 million stars by the star-pair algorithm based on LAMOST stellar parameters along with GALEX, Pan-STARRS 1, Gaia, SDSS, 2MASS, and WISE…

星系天体物理 · 物理学 2023-01-18 Ruoyi Zhang , Haibo Yuan

We present a three dimensional extinction map in $r$ band. The map has a spatial angular resolution, depending on latitude, between 3 -- 9\,arcmin and covers the entire XSTPS-GAC survey area of over 6,000\,$\rm deg^2$ for Galactic longitude…

太阳与恒星天体物理 · 物理学 2015-06-22 B. -Q Chen , X. -W. Liu , H. -B. Yuan , H. -H. Zhang , M. Schultheis , B. -W. Jiang , Y. Huang , M. -S. Xiang , H. -B. Zhao , J. -S. Yao , H. Lu

A new optical reddening model for the Solar neighborhood is presented. The model makes use of the large-scale properties of the dust layer in the Galaxy, and of the observed clumpiness in its distribution, and it is used to compute…

天体物理学 · 物理学 2011-05-23 R. A. Mendez , W. F. van Altena

The Sun is located close to the Galactic mid-plane, meaning that we observe the Galaxy through significant quantities of dust. Moreover, the vast majority of the Galaxy's stars also lie in the disc, meaning that dust has an enormous impact…

星系天体物理 · 物理学 2024-01-24 Amery Gration , John Magorrian

Context: Deep GALEX UV data show that the extreme outskirts of some spiral galaxies are teeming with star formation. Such young stellar populations evolving so far away from the bulk of their host galaxies challenge our overall…

星系天体物理 · 物理学 2020-02-05 Leire Beitia-Antero , Ana Inés Gómez de Castro , Raúl de la Fuente Marcos

We present a map of the three-dimensional (3D) distribution of dust in the Orion complex. Orion is the closest site of high-mass star formation, making it an excellent laboratory for studying the interstellar medium and star formation. We…

星系天体物理 · 物理学 2018-08-15 S. Rezaei Kh. , C. A. L. Bailer-Jones , E. F. Schlafly , M. Fouesneau

Temperature and luminosity are the two key diagnostics of a star, yet these cannot come directly from survey data, but must be imputed by comparing those data to models. SED fitting offers a high-precision method to obtain both parameters…

太阳与恒星天体物理 · 物理学 2026-01-08 I. McDonald , A. A. Zijlstra , N. J. Cox , J. Bernard-Salas

We present high-resolution maps of the dust reddening in the Magellanic Clouds (MCs). The maps cover the Large and Small Magellanic Cloud (LMC and SMC) area and have a spatial angular resolution between $\sim$ 26 arcsec and 55 arcmin. Based…

星系天体物理 · 物理学 2022-01-19 B. -Q. Chen , H. -L. Guo , J. Gao , M. Yang , Y. -L. Liu , B. -W. Jiang

Interstellar extinction is investigated in a 1.5 square degree area in the direction of the reflection nebula NGC 7023 at l = 104.1 deg, b = +14.2 deg. The study is based on photometric classification and the determination of interstellar…

星系天体物理 · 物理学 2009-07-28 K. Zdanavicius , J. Zdanavicius , V. Straizys , M. Maskoliunas

Based on the Gaia DR1 TGAS parallaxes and photometry from the Tycho-2, Gaia, 2MASS, and WISE catalogues, we have produced a sample of about 100 000 clump red giants within about 800 pc of the Sun. The systematic variations of the mode of…

太阳与恒星天体物理 · 物理学 2019-10-25 George Gontcharov