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相关论文: Empirical extinction coefficients for the Swift-UV…

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Using the "standard pair" technique of paring stars of almost nil and high extinction but otherwise of almost identical stellar parameters from the SDSS, and combing the SDSS, GALEX, 2MASS and WISE photometry ranging from the far UV to the…

太阳与恒星天体物理 · 物理学 2015-06-12 Hai-Bo Yuan , Xiao-Wei Liu , Mao-Sheng Xiang

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 dust-column--dependent extinction curve parameters for ultraviolet wavelengths at high Galactic latitudes. This extinction function diverges from previous work in that it takes into account the results of Peek & Schiminovich…

星系天体物理 · 物理学 2013-11-14 J. E. G. Peek

We study the integral Galactic extinction and reddening based on the galaxy catalog of the South Galactic Cap U-band Sky Survey (SCUSS), where $u$ band galaxy number counts and $u-r$ color distribution are used to derive the Galactic…

Interstellar extinction in ultraviolet is the most severe in comparison with optical and infrared wavebands and a precise determination plays an important role in correctly recovering the ultraviolet brightness and colors of objects. By…

太阳与恒星天体物理 · 物理学 2018-08-01 Mingxu Sun , B. W. Jiang , He Zhao , Jian Gao , Shuang Gao , Mingjie Jian , Haibo Yuan

Recently Wo\'zniak \& Stanek (1996) proposed a new method to investigate interstellar extinction, based on two band photometry, which uses red clump stars as a means to construct the reddening curve. I apply this method to the…

天体物理学 · 物理学 2009-10-28 K. Z. Stanek

We present ultraviolet (UV) observations of six nearby Type~Ia supernovae (SNe~Ia) obtained with the Hubble Space Telescope, three of which were also observed in the near-IR (NIR) with Wide-Field Camera~3. UV observations with the Swift…

The extinction law from ultraviolet (UV) to infrared (IR) (0.2-24 $\mu$m) is determined by relying on the blue-edge method and color excess ratios for some nearby molecular clouds, from low mass star forming region to massive star forming…

星系天体物理 · 物理学 2024-10-04 Zhetai Cao , Biwei Jiang , Shu Wang , Jun Li

We present extinction curves that include data down to far ultraviolet wavelengths (FUV; 1050 - 1200 A) for nine Galactic sight lines. The FUV extinction was measured using data from the Far Ultraviolet Spectroscopic Explorer. The sight…

Interstellar and atmospheric extinctions redden the observational photometric data and they should be handled rigorously. This paper simulates the effect of reddening for the modest case of two main sequence T1 = 6500K and T2 = 5500K…

天体物理学 · 物理学 2009-11-10 A. Prsa , T. Zwitter

This study employs stellar parameters from spectroscopic surveys and Zhang et al. based on Gaia XP spectra, along with photometric data from GALEX, UVOT, and Gaia, to obtain extensive ultraviolet color excess information for the relevant…

星系天体物理 · 物理学 2025-05-07 Dongliang Yang , Mingxu Sun , Biwei Jiang , Wenyuan Cui , Ruoyi Zhang , Luyao Shi , Jiachen Wei

The wide range of UV extinction properties in the Small Magellanic Cloud (SMC) probably traces the effects of star formation on interstellar dust. The Swift UVOT, with its three UV filters (centred at 1800, 2200 and 2500 A respectively) and…

天体物理学 · 物理学 2007-05-23 A. J. Blustin , W. B. Landsman , M. Still , S. R. Rosen , M. J. Page , P. W. A. Roming

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…

太阳与恒星天体物理 · 物理学 2024-10-15 Snehalata Sahu , Pier-Emmanuel Tremblay , Rosine Lallement , Seth Redfield , Boris T. Gaensicke

We have assembled a homogeneous database of 417 ultraviolet (UV) extinction curves for reddened sightlines having International Ultraviolet Explorer (IUE) spectra. We have combined these with optical and 2MASS photometry allowing estimates…

天体物理学 · 物理学 2009-11-10 Lynne A. Valencic , Geoffrey C. Clayton , Karl D. Gordon

We have measured the extinction curve in the far-ultraviolet wavelength region of (900 -- 1200 A) using spectra obtained with the Berkeley EUV/FUV spectrometer during the ORFEUS-I and the ORFEUS-II missions in 1993 and 1996. From the…

天体物理学 · 物理学 2009-11-07 T. P. Sasseen , M. Hurwitz , W. V. Dixon , S. Airieau

Understanding the effects of dust extinction is important to properly interpret observations. The optical total-to-selective extinction ratio, Rv = Av/E(B-V), is widely used to describe extinction variations in ultraviolet and optical…

星系天体物理 · 物理学 2017-11-01 Shu Wang , Biwei Jiang , He Zhao , Xiaodian Chen , Richard de Grijs

We present determinations of the total to selective extinction ratio R_V and visual extinction A_V values for Milky Way stars using ultraviolet color excesses. We extend the analysis of Gnacinski and Sikorski (1999) by using non-equal…

天体物理学 · 物理学 2007-05-23 Anna Geminale , Piotr Popowski

The interstellar extinction law is important for interpreting observations and inferring the properties of interstellar dust grains. Based on the 993 prism/CLEAR spectra from the James Webb Space Telescope (JWST), we investigate…

星系天体物理 · 物理学 2024-02-28 Shu Wang , Xiaodian Chen

We present measurements of dust reddening using the colors of stars with spectra in the Sloan Digital Sky Survey. We measure reddening as the difference between the measured and predicted colors of a star, as derived from stellar parameters…

星系天体物理 · 物理学 2011-09-26 Edward F. Schlafly , Douglas P. Finkbeiner

We investigate the properties of the extinction curve in the rest-frame UV for a sample of 34 UV-luminous galaxies at 2 < z < 2.5, selected from the FORS Deep Field (FDF) spectroscopic survey. A new parametric description of the rest-frame…

天体物理学 · 物理学 2007-05-23 S. Noll , D. Pierini
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