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The distance dependence of interstellar extinction in the direction of the Aquila Rift is investigated using 473 stars observed in the Vilnius photometric system. Front edge of the dark clouds in the area is found to be at 225$\pm$55 pc and…

天体物理学 · 物理学 2009-11-07 V. Straizys , K. Cernis , S. Bartasiute

We propose a Bayesian method to measure the total Galactic extinction parameters, $R_V$ and $A_V$. Validation tests based on the simulated data indicate that the method can achieve the accuracy of around 0.01\,mag. We apply this method to…

天体物理仪器与方法 · 物理学 2014-06-20 Hai-Jun Tian , Chao Liu , Jing-Yao Hu , Yang Xu , Xue-Lei Chen

For more than 5000 stars with accurate parallaxes from the Hipparcos and Gaia DR1 Tycho-Gaia astrometric solution (TGAS), Tycho-2 photometry, interstellar polarization from eight catalogues and interstellar extinction from eight 3D maps the…

星系天体物理 · 物理学 2017-07-26 George Gontcharov

We present a non-parametric model for inferring the three-dimensional (3D) distribution of dust density in the Milky Way. Our approach uses the extinction measured towards stars at different locations in the Galaxy at approximately known…

星系天体物理 · 物理学 2017-03-22 S. Rezaei Kh. , C. A. L. Bailer-Jones , R. J. Hanson , M. Fouesneau

We determine the local galactic extinction towards the field of gamma-ray burst GRB970228 using a variety of methods. We develop a maximum likelihood method for measuring the extinction by comparing galaxy counts in the field of interest to…

天体物理学 · 物理学 2009-10-30 F. J. Castander , D. Q. Lamb

Aims. We aim to map the 3D distribution of the interstellar extinction of the Milky Way disk up to distances larger than those probed with the Gaia parallax alone. Methods. We apply the FEDReD (Field Extinction-Distance Relation…

星系天体物理 · 物理学 2020-09-16 C. Hottier , C. Babusiaux , F. Arenou

We have used UV (FOCA) and FIR (IRAS) images of six nearby late type galaxies to study the radial variation of the UV extinction (deduced from the FIR/UV ratio). We compare the UV extinction gradient with other extinction indicators (Balmer…

天体物理学 · 物理学 2009-11-10 S. Boissier , A. Boselli , V. Buat , J. Donas , B. Milliard

We present a 2D study of the internal extinction on (sub)kiloparsec scales of a sample of local (z<0.1) (U)LIRGs, based on near-infrared Pa_a, Br_d, and Br_g line ratios, obtained with VLT-SINFONI integral-field spectroscopy. The 2D…

宇宙学与河外天体物理 · 物理学 2013-09-11 J. Piqueras López , L. Colina , S. Arribas , A. Alonso-Herrero

Using star-forming galaxies sample in the nearby Universe (0.02<z<0.10) selected from the SDSS (DR7) and GALEX all-sky survey (GR5), we present a new empirical calibration for predicting dust extinction of galaxies from H-alpha-to-FUV flux…

We detail a technique for estimating the UV extinction and luminosity of UV selected galaxies using UV quantities alone. The technique is based on a tight correlation between the ratios of far infrared (FIR) to UV flux ratios and UV color…

天体物理学 · 物理学 2009-10-31 Gerhardt R. Meurer , Timothy M. Heckman , Daniela Calzetti

We have started an ambitious program to determine if the full diversity of extinction laws is real or if some of it is due to calibration or methodological issues. Here we start by analyzing the information on NIR extinction in a 2MASS…

Galactic extinction is tested using galaxy number counts at low Galactic latitude obtained from five band photometry of the Sloan Digital Sky Survey. The spatial variation of galaxy number counts for low extinction regions of $E(B-V) <…

天体物理学 · 物理学 2008-11-26 Naoki Yasuda , Masataka Fukugita , Donald P. Schneider

Neutral hydrogen (HI) emission closely traces the dust column density at high Galactic latitudes and is thus a powerful tool for predicting dust extinction. However, the relation between HI column density $N_{\rm HI}$ and high-latitude dust…

星系天体物理 · 物理学 2025-04-28 Yun-Ting Cheng , Brandon S. Hensley , Tzu-Ching Chang , Olivier Doré

We present new three-dimensional (3D) interstellar dust reddening maps of the Galactic plane in three colours, E(G-Ks), E(Bp-Rp) and E(H-Ks). The maps have a spatial angular resolution of 6 arcmin and covers over 7000 deg$^2$ of the…

星系天体物理 · 物理学 2018-12-19 B. -Q. Chen , Y. Huang , H. -B. Yuan , C. Wang , D. -W. Fan , M. -S. Xiang , H. -W. Zhang , Z. -J. Tian , X. -W. Liu

The review contains an analysis of the observed and model curves of the interstellar extinction and polarization. The observations mainly give information on dust in diffuse and translucent interstellar clouds. The features of various dust…

星系天体物理 · 物理学 2015-06-05 N. V. Voshchinnikov

We present a study of the detailed distribution of extinction in a region of the Taurus dark cloud complex. Our study uses new BVR images of the region, spectral classification data for 95 stars, and IRAS Sky Survey Atlas (ISSA) 60 and 100…

天体物理学 · 物理学 2009-10-31 Hector G. Arce , Alyssa A. Goodman

The total-to-selective extinction ratio, Rv, is a key parameter for tracing the properties of interstellar dust, as it directly determines the variation of the extinction curve with wavelength. By utilizing accurate color excess…

星系天体物理 · 物理学 2023-09-11 Ruoyi Zhang , Haibo Yuan , Bingqiu Chen

We present a new 3D map of interstellar dust reddening, covering three quarters of the sky (declinations greater than -30 degrees) out to a distance of several kiloparsecs. The map is based on high-quality stellar photometry of 800 million…

Aims. We use near-infrared, ground-based data from the VISTA Variables in the Via Lactea (VVV) survey to indirectly extend the astrometry provided by the Gaia catalog to objects in heavily-extincted regions towards the Galactic bulge and…

星系天体物理 · 物理学 2024-07-03 M. Griggio , M. Libralato , A. Bellini , L. R. Bedin , J. Anderson , L. C. Smith , D. Minniti

We present a new technique based on multi-band near ultraviolet and optical photometry to measure both the stellar intrinsic properties, ie luminosity and effective temperature, and the interstellar dust extinction along the line of sight…

天体物理学 · 物理学 2009-11-07 Martino Romaniello , Nino Panagia , Salvatore Scuderi , Robert P. Kirshner