The Optical/Near-infrared Extinction Law in Highly Reddened Regions [PDF]
The Astrophysical Journal, 2018 Abstract A precise extinction law is a critical input when interpreting observations of highly reddened sources such as young star clusters and the Galactic Center (GC). We use Hubble Space Telescope observations of a region of moderate extinction and a region of high extinction to measure the optical and near-infrared extinction law (0 ...
Matthew W. Hosek +8 more
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A Walk through AGN Country—For the Somewhat Initiated!
Galaxies, 2023 Key issues in AGN and galaxy formation are discussed. Very successful Unified Models explain much of the variety of AGN with orientation effects; the ingredients are shadowing by a dusty “torus” and relativistic beaming.
Robert R. J. Antonucci
doaj +1 more source
Differential reddening in the direction of 56 Galactic globular clusters
, 2023 The presence of differential reddening in the direction of Galactic globular clusters (GCs) has proven to be a serious limitation in the traditional colour-magnitude diagram (CMD) analysis. Here, we estimate local reddening variations in the direction of
A Mohandasan +17 more
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JWST’s PEARLS: Dust Attenuation and Gravitational Lensing in the Backlit-galaxy System VV 191
The Astronomical Journal, 2023 We derive the spatial and wavelength behavior of dust attenuation in the multiple-armed spiral galaxy VV 191b using backlighting by the superimposed elliptical system VV 191a in a pair with an exceptionally favorable geometry for this measurement ...
William C. Keel +30 more
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The Gaia-ESO Survey: addressing extinction and reddening towards NGC6530 [PDF]
, 2016 Accurate knowledge of the amount of interstellar extinction and its properties is crucial to determine fundamental stellar parameters, such as luminosities, masses and ages.
Prisinzano Loredana (5265115) +8 more
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An HST Study of the Substellar Population of NGC 2024
The Astrophysical Journal, 2023 We performed an HST/WFC3-IR imaging survey of the young stellar cluster NGC 2024 in three filters probing the 1.4 μ m H _2 O absorption feature, characteristic of the population of low-mass and substellar-mass objects down to a few Jupiter masses.
Massimo Robberto +8 more
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Measuring reddening with Sloan Digital Sky Survey stellar spectra and recalibrating SFD [PDF]
, 2017 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 from the ...
Schlafly, Edward F., Finkbeiner, Douglas
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The Blue Tip of the Stellar Locus: Measuring Reddening with the Sloan Digital Sky Survey [PDF]
, 2017 We present measurements of reddening due to dust using the colors of stars in the Sloan Digital Sky Survey (SDSS). We measure the color of main-sequence turnoff stars by finding the "blue tip" of the stellar locus: the prominent blue edge in the ...
Weaver, Benjamin A. +7 more
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Measuring the Slope of the Dust Extinction Law and the Power Spectrum of Dust Clouds Using Differentially Reddened Globular Clusters [PDF]
The Astronomical Journal, 2004 We present 3 methods for measuring the Galactic dust extinction law slope R_V and a method for quantifying fine structure in dust clouds in the direction of differentially-reddened globular clusters. We apply these methods to the low- latitude globular cluster NGC4833 which displays variable extinction/reddening about a mean ~ 1.
Melbourne, J., Guhathakurta, P.
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