English
Related papers

Related papers: Foreground Extinction to Extended Celestial Object…

200 papers

We use the Spitzer IRAC catalogue of the Galactic Center (GC) point sources (Ramirez et al. 2008) and combine it with new isochrones (Marigo et al. 2008) to derive extinctions based on photometry of red giants and asymptotic giant branch…

Astrophysics · Physics 2009-11-13 M. Schultheis , K. Sellgren , S. Ramirez , S. Stolovy , S. Ganesh , I. S. Glass , L. Girardi

We have studied the interstellar extinction in a field of ~3' x 3' at the core of the 30 Doradus nebula, including the central R136 cluster, in the Large Magellanic Cloud. Observations at optical and near-infrared wavelengths, obtained with…

Solar and Stellar Astrophysics · Physics 2015-06-22 Guido De Marchi , Nino Panagia

We probe the dust extinction through the foreground disk of the overlapping galaxy pair UGC 5041 by analyzing B,I, and H band images. The inclined foreground disk of this infrared-selected pair is almost opaque in B at a projected distance…

Astrophysics · Physics 2009-10-30 James Pizagno , Hans-Walter Rix

We study the IR-through-UV interstellar extinction curves towards 328 Galactic B and late-O stars. We use a new technique which employs stellar atmosphere models in lieu of unreddened "standard" stars. This technique is capable of virtually…

Astrophysics · Physics 2009-06-23 E. L. Fitzpatrick , D. Massa

The Ultraviolet Imaging Telescope (UVIT) is scheduled to be launched as a part of the ASTROSAT satellite. As part of the mission planning for the instrument we have studied the efficacy of UVIT observations for interstellar extinction…

Instrumentation and Methods for Astrophysics · Physics 2013-02-12 S. Ravichandran , Preethi Krishnamoorthy , Margarita Safonova , Jayant Murthy

Although interstellar dust extinction serves as a powerful distance estimator, the solar system's location within the Galactic plane complicates distance determinations, especially for molecular clouds (MCs) at varying distances along the…

Astrophysics of Galaxies · Physics 2025-08-22 Shiyu Zhang , Yang Su , Xuepeng Chen , Min Fang , Fujun Du , Shaobo Zhang , Qing-Zeng Yan , Xin Liu , Miaomiao Zhang , Yan Sun , Ji Yang

The detailed study of the Galactic bulge stellar population necessarily requires an accurate representation of the interstellar extinction particularly toward the Galactic plane and center, where the severe and differential reddening is…

Astrophysics of Galaxies · Physics 2021-01-04 F. Surot , E. Valenti , O. A. Gonzalez , M. Zoccali , E. Sökmen , S. L. Hidalgo , D. Minniti

Combining the precise parallaxes and optical photometry delivered by Gaia's second data release (Gaia DR2) with the photometric catalogues of PanSTARRS-1, 2MASS, and AllWISE, we derive Bayesian stellar parameters, distances, and extinctions…

We have applied the method of star counts with Wolf diagrams to determine the interstellar extinction in five Galactic cirri in Sloan Digital Sky Survey (SDSS) Stripe 82. For this purpose, we have used the photometry of stars in the GALEX…

The large majority of extinction sight lines in our Galaxy obey a simple relation depending on one parameter, the total-to-selective extinction coefficient, Rv. Different values of Rv are able to match the whole extinction curve through…

Astrophysics of Galaxies · Physics 2015-05-20 Paola Mazzei , Guido Barbaro

M31 and M33 serve as ideal places to study distributions of dust in the outskirts of spiral galaxies. In this letter, using about 0.2 million stars selected from the LAMOST data and combining precise photometry and parallaxes from the Gaia…

Astrophysics of Galaxies · Physics 2021-02-05 Ruoyi Zhang , Haibo Yuan

Determining star cluster distances is essential to analyse their properties and distribution in the Galaxy. In particular it is desirable to have a reliable, purely photometric distance estimation method for large samples of newly…

Astrophysics of Galaxies · Physics 2015-06-17 Anne S. M. Buckner , Dirk Froebrich

Dust extinction curves provide one of the main avenues to understanding the detailed nature of dust grains and accounting for the effects of dust on observations of many astrophysical objects. For the first time, spectroscopic ultraviolet…

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…

Astrophysics · Physics 2009-11-10 Lynne A. Valencic , Geoffrey C. Clayton , Karl D. Gordon

Fundamental properties of the extinction curve, like the slope in the rest-frame UV and the presence/absence of a broad absorption excess centred at 2175A (the UV bump), are investigated for a sample of 108 massive, star-forming galaxies at…

Astrophysics · Physics 2007-05-23 Stefan Noll , Daniele Pierini , Maurilio Pannella , Sandra Savaglio

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

We report results of a near--infrared imaging survey of L977, a dark cloud in Cygnus seen in projection against the plane of the Milky Way. We use measurements of the near--infrared color excess and positions of the 1628 brightest stars in…

Astrophysics · Physics 2009-10-30 J. Alves , C. Lada , E. Lada , S. Kenyon , R. Phelps

Recent disk observations have revealed multiple indirect signatures of forming gas giant planets, but high-contrast imaging has rarely confirmed the presence of the suspected perturbers. Here, we exploit a unique opportunity provided by the…

Earth and Planetary Astrophysics · Physics 2025-10-01 G. Cugno , S. Facchini , F. Alarcon , J. Bae , M. Benisty , A. -C. Eilers , G. C. K. Leung , M. Meyer , L. Pueyo , R. Teague , E. Bergin , J. Girard , R. Helled , J. Huang , J. Leisenring

The first results of the construction of a 3D reddening map for stars within 1600 pc of the Sun are presented. Analysis of the distribution of 70 million stars from the 2MASS catalog with the most accurate photometry on the (J-Ks) - Ks…

Solar and Stellar Astrophysics · Physics 2016-07-06 George Gontcharov