Results 41 to 50 of about 1,102 (179)

The main sequence of three red supergiant clusters [PDF]

open access: yes, 2013
Massive clusters in our Galaxy are an ideal testbed to investigate the properties and evolution of high-mass stars. They provide statistically significant samples of massive stars of uniform ages. To accurately determine the intrinsic physical properties
Scholz, Alexander, Froebrich, Dirk
core   +1 more source

The Effect of a Nonuniversal Extinction Curve on the Wesenheit Function and Cepheid Distances

open access: yesThe Astrophysical Journal Letters
The Wesenheit function is widely used to reduce the effects of interstellar reddening in distance measurements. Its construction, however, relies on the assumption of a universal extinction curve and on fixed values of the total-to-selective extinction ...
Dorota M. Skowron   +3 more
doaj   +1 more source

Confidence intervals for extinction risk: Validating population viability analysis with limited data

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 6, Page 1837-1850, June 2026.
Abstract The assessment of extinction risk remains a key component of IUCN and CITES evaluations. However, it has been argued that, under realistic data limitations, confidence intervals (CIs) for extinction probability often span the entire 0–1 range, rendering such assessments meaningless.
Hiroshi Hakoyama
wiley   +1 more source

Interstellar reddening in the galaxy [PDF]

open access: yes, 1964
Objective prism spectra obtained with the 16/24/60-inch Schmidt telescope have been used for an investigation of the wavelength dependence of interstellar absorption in the spectral range from 8000A to 3450A, in a region of 30 square degrees in ...
Nandy, Kashi Nath
core  

The Extinction Law in Type Ia Supernovae Hosts from Background Galaxy Measurements: Toward a 1% Determination of H0

open access: yesThe Astrophysical Journal
In the most precise distance ladder determination of H _0 , the observed near-infrared fluxes of Cepheids are corrected for dust, assuming that the extinction law in large, star-forming spiral hosts of Type Ia supernovae (SNe Ia) is similar to the Milky ...
Yukei S. Murakami   +6 more
doaj   +1 more source

The Interstellar Reddening Law within 3kpc from the Sun

open access: yes, 2014
2 figures, 3 pages, presented in the 10th Pacific Rim Conference on Stellar Atrophysics, to be appeared in the ASP Conference Series, Vol ...
Sung, Hwankyung, Bessell, M. S.
openaire   +2 more sources

Dream is an offshore flame: Notes on archaeology and belonging

open access: yesAnthropology and Humanism, Volume 51, Issue 1, June 2026.
Abstract Set within an archaeology lab in Dunedin, Aotearoa, this creative non‐fiction piece traces the search for dwelling through the meticulous, repetitive labor of everyday practice. The narrative finds belonging not as a static identity, but as a continuous, tactile engagement with the material world.
Orlan Yuan Syshui
wiley   +1 more source

Concealed coexistence: Reproductive choice and coercion in Timor‐Leste

open access: yesMedical Anthropology Quarterly, Volume 40, Issue 2, June 2026.
Abstract Choice is a central concept in reproductive rights. However, a discourse of choice in reproductive health can also mask precisely the act it aims to protect against: coercion. Whilst choice has been explored extensively in studies of reproductive rights and justice, understandings of coercion are fragmented and under‐theorized.
Laura Burke
wiley   +1 more source

An Empirical Extinction Curve Revealed by Gaia XP Spectra and LAMOST

open access: yesThe Astrophysical Journal
We present a direct measurement of extinction curves using corrected Gaia XP spectra of the common sources in Gaia DR3 and LAMOST DR7. Our analysis of approximately 370,000 high-quality samples yielded a high-precision average extinction curve for the ...
Ruoyi Zhang   +6 more
doaj   +1 more source

Thermal Segregation and Reddening in Europa's Double Ridges

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Europa's double ridges often display lower albedo and redder color than their surroundings. Their unique topography may cause sublimation‐driven darkening due to illumination and self‐heating—the process of thermal segregation. We apply an advanced 3D thermophysical model, including shadowing and self‐heating through mutual exchange of ...
Kya C. Sorli   +3 more
wiley   +1 more source

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