Results 71 to 80 of about 504 (195)

Spectroscopy of hot subdwarf binaries

open access: yesOpen Astronomy, 2018
We present a status report of our spectroscopic analysis of subdwarf binaries consisting of a subdwarf and a F/G/K-type main-sequence companion. These systems selected from SDSS photometry show significant excess in the (infra-)red which can not be ...
Kreuzer Simon   +2 more
doaj   +1 more source

Extreme Starlight Polarization Efficiency toward ζ Ophiuchi: A Case for Line-of-sight Foreground Subtraction

open access: yesThe Astronomical Journal
Despite the pervasive nature of interstellar dust and its impact on nearly all observations, most dust corrections employ line-of-sight averages over large angular scales.
Jordan A. Bartlett, Henry A. Kobulnicky
doaj   +1 more source

Interstellar reddening towards six small areas in Puppis-Vela [PDF]

open access: yesAstronomy & Astrophysics, 2012
Accepted by Astronomy and ...
openaire   +2 more sources

HIGH PRECISION EFFECTIVE TEMPERATURES OF F-K SUPERGIANTS AND CLASSICAL CEPHEIDS

open access: yesOdessa Astronomical Publications, 2017
We present precise effective temperatures (Teff) of 110 F-K supergiants determined from the method of line depth ratios. For each star, we have measured the line depths a large number of spectral lines of low and high excitation potentials and ...
V. V. Kovtyukh
doaj   +1 more source

An All-sky 3D Dust Map Based on Gaia and LAMOST

open access: yesThe Astrophysical Journal Supplement Series
We present a comprehensive 3D dust-reddening map covering the entire Milky Way, constructed by combining reddening estimates based on Large Sky Area Multi-Object Fiber Spectroscopy Telescope (LAMOST) low-resolution spectra ( E ( B  −  V ) _LAMOST ) with ...
Tao Wang   +8 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

open access: yes
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

MODELS OF ENERGY DISTRIBUTION IN SPECTRUM OF SAKURAFS OBJECT

open access: yesOdessa Astronomical Publications, 2017
Theoretical energy distributions in a spectrum of Sakurai's object (SO) are calculated for a grid of hydrogen-deficient and carbon-rich model atmospheres of Teff = 5000-6200 K and log g= 0.0-1.0.
Ya. Pavlenko   +2 more
doaj   +1 more source

Ly Halo Properties and Dust in the Circumgalactic Medium of z ∼ 2 Star-forming Galaxies

open access: yesThe Astrophysical Journal
We present Keck Cosmic Web Imager integral-field unit observations around extended Ly α halos of 27 typical star-forming galaxies with redshifts 2.0 < z < 3.2 drawn from the MOSFIRE Deep Evolution Field survey.
Zhiyuan Song   +9 more
doaj   +1 more source

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