Results 91 to 100 of about 41,478 (242)

LAMOST Spectroscopy and Gaia Photo-Astrometry for an Interstellar Extinction Study

Galaxies
The aim of this work is to establish the present accuracy and convergence of available estimates of galactic extinction. We determine the galactic interstellar extinction in selected high-latitude areas of the sky based on Gaia DR3 astrometry and ...
Oleg Malkov, Aleksandra Avdeeva, Dana Kovaleva   +2 more
doaj   +1 more source

Interstellar Extinction in External Galaxies [PDF]

Symposium - International Astronomical Union, 1989
In this paper I review the existing measurements of the wavelength dependence of interstellar extinction arising from dust situated outside the Milky Way galaxy. This paper emphasizes studies of extinction in the Large and Small Magellanic Clouds. I discuss the UV extinction properties, as well as the optical and near-IR properties as determined from ...
openaire   +1 more source

Estimation of Host Galaxy Extinction for SNe Ia

Galaxies
Type Ia supernovae are used as fundamental probes of the cosmological parameters, based on a tight empirical relation between their peak luminosity and the width of their light curve. However, it has been recognized that SNe Ia are not “standard” candles,
Oleg Malkov, Alexey Sytov, Gang Zhao, Zehao Zhong   +3 more
doaj   +1 more source

The Optical Gravitational Lensing Experiment. Is Interstellar Extinction Toward the Galactic Center Anomalous?

, 2002
Photometry of the Galactic bulge, collected during the OGLE-II microlensing search, indicates high and non-uniform interstellar extinction toward the observed fields.
A. Udalski, Mizerski T., Ortolani S., Paczynski B., Paczynski B., Schultheis M., Stanek K. Z., Udalski A., Udalski A.   +8 more
core   +1 more source

Luminosity Distance and Extinction by Submicrometer-sized Grains

The Astrophysical Journal Letters
The distance to the stars is a fundamental parameter, which is determined via two primary methods—parallax and luminosity. While the parallax is a direct trigonometric method, the luminosity distance is usually influenced by interstellar extinction.
R. Siebenmorgen, Frank Heymann, R. Chini
doaj   +1 more source

Luminosity and Intrinsic Color Calibration of Main-Sequence Stars With 2Mass Photometry: All Sky Local Extinction

Open Astronomy, 2003
We present a new color index vs. absolute magnitude calibration of 2MASS JHK photometry. For the A0 to ~G5 and M segments of the main sequence information on the amount of interstellar extinction and its location in space may be obtained.
Knude Jens, Fabricius Claus
doaj   +1 more source

New Interstellar Extinction Maps Based on Gaia and Other Sky Surveys [PDF]

, 2023
G. A. Gontcharov, Alexander A. Marchuk, M. Yu. Khovrichev, А. В. Мосенков, С. С. Савченко, В. Б. Ильин, Denis M Poliakov, Anton A Smirnov   +7 more
openalex   +1 more source

Wave length dependence of polarization by small graphite flakes [PDF]

Graphite polarization data for semi-quantitative estimation of interstellar radiation wave extinction by small graphite ...
Greenberg, J. M.
core   +1 more source

Reddening law and interstellar dust properties along Magellanic sight-lines

, 2007
This study establishes that SMC, LMC and Milky Way extinction curves obey the same extinction law which depends on the 2200A bump size and one parameter, and generalizes the Cardelli, Clayton and Mathis (1989) relationship.
A. Ardeberg, A. Ardeberg, B. Nicolet, B.D. Savage, C.D. Garmany, D. Schlegel, E.L. Fitzpatrick, F. Zagury, F. Zagury, F. Zagury, F. Zagury, F.-X. Desert, Frédéric Zagury, G.C. Clayton, J. Isserstedt, J. Isserstedt, J. Isserstedt, J. Rousseau, J. Stebbins, J.A. Cardelli, J.S. Hall, K.A. Misselt, K.D. Gordon, L. Divan, L.A. Valencic, L.C. Henyey, M. Azzopardi, M. Azzopardi, M.L. Prévot, M.M. Smith Neubig, M.M. Smith Neubig, M.O. Osteicher, M.P. Fitzgerald, P. Bouchet, S.I.B. Cartledge   +34 more
core   +1 more source

Uncertainties in the interstellar extinction curve and the Cepheid distance to M101 [PDF]

, 2015
David M. Nataf
openalex   +1 more source