Results 1 to 10 of about 680 (121)

A NEW REDDENING LAW FOR M4 [PDF]

open access: yesAstronomical Journal, 2012
24 pages, 19 figures, 13 ...
Peter B Stetson   +2 more
exaly   +3 more sources

The photometry and kinematics studies of NGC 2509 derived from Gaia DR3 [PDF]

open access: yesScientific Reports
This research uses the third edition of the Gaia Data Release (DR3) to re-investigate the open star cluster NGC 2509. We employed the pyUPMASK Python package and HDBSCAN algorithms to identify the cluster member stars.
Nasser M. Ahmed, A. L. Tadross
doaj   +2 more sources

ANOMALOUSLY STEEP REDDENING LAW IN QUASARS: AN EXCEPTIONAL EXAMPLE OBSERVED IN IRAS 14026+4341 [PDF]

open access: yesAstronomical Journal, 2013
A fraction of the heavily reddened quasars require a reddening curve which is even steeper than that of the Small Magellanic Cloud. In this paper, we thoroughly characterize the anomalously steep reddening law in quasars, via an exceptional example observed in IRAS 14026+4341.
Peng Jiang, Hongyan Zhou, Tuo Ji
exaly   +3 more sources

Reddening and the Extinction Law at High Galactic Latitude

open access: yesAstrophysical Journal, 2005
We present near-infrared (JHKL) photometry of 103 southern stars located behind translucent interstellar clouds at high Galactic latitude. Our data are combined with visual photometry and spectral type information from the literature in a detailed analysis of the wavelength dependence of interstellar extinction by dust in these high-latitude clouds. We
D C B Whittet
exaly   +3 more sources

The reddening law of type Ia supernovae: separating intrinsic variability from dust using equivalent widths [PDF]

open access: yesAstronomy and Astrophysics, 2011
6 pages, 3 figures, 1 table; accepted by A&A ...
N Chotard, E Gängler, G Aldering
exaly   +5 more sources

The UV and Optical Reddening Law to the Galactic Bulge and CNO Abundances in Bulge Planetary Nebulae [PDF]

open access: yesSymposium - International Astronomical Union, 1993
An analysis of the differential ultraviolet extinction towards four bulge planetary nebulae, based on the observed line ratio of He II 1640/4686Å, shows that the ultraviolet reddening law towards the bulge is much steeper than in the solar neighbourhood.
N A Walton, M J Barlow, Walton N A
exaly   +2 more sources

The Reddening law outside the local group galaxies: The case of NGC 7552 and NGC 5236

open access: yesAstrophysical Journal, 1994
The dust reddening law from the UV to the near-IR for the extended regions of galaxies is here derived from the spectral distributions of the starburst spiral galaxies NGC 7552 and NGC 5236. The centers of these galaxies have similar absorption and emission line spectra, differing only if the strength of their interstellar lines and in the continuum ...
Anne L Kinney   +2 more
exaly   +2 more sources

The Law of Interstellar Reddening and Absorption.

open access: yesAstrophysical Journal, 1956
W A Hiltner, H L Johnson, Hiltner W A
exaly   +2 more sources

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