Results 61 to 70 of about 264 (177)
Benchmarking Differential Reddening in Front of Globular Clusters
The Astronomical JournalInterstellar extinction is a major obstacle in determining accurate stellar parameters from photometry near the Galactic disk. It is especially true for globular clusters at low galactic latitudes, which suffer from significant amounts of spatially ...
Csilla Kalup, László Molnár
doaj +1 more source
Open Astronomy, 2010 The contamination in the Gaia BP and RP spectra, caused by the LSF smearing, is a serious obstacle for the classification of stars since the contamination values at different wavelengths depend on temperatures, gravities, metallicities and interstellar ...
Straižys V. +2 more
doaj +1 more source
The Astronomical JournalDespite 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
A Study of Interstellar Reddening at High Galactic Latitudes [PDF]
Symposium - International Astronomical Union, 1973 A series of finding lists of A stars in regions at high galactic latitudes has been published in the last few years. Strömgren four-color and Hβ measures have been made of stars in five of the regions, allowing the interstellar absorption in each to be calculated.
openaire +1 more source
Photoelectric Vilnius Photometry of Stars in the Mega Proper Motion Field KA 10
Open Astronomy, 2003 Photoelectric seven-color photometry in the Vilnius medium-band, system is obtained for 87 stars down to V≃13.0 in the Kiev proper motion field KA10 [l = 137°, b = -59°]. The size of the field is 1.4 square degrees.
Bartašiutė S.
doaj +1 more source
Spectroscopy of hot subdwarf binaries
Open 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
Variations of Interstellar Gas-to-dust Ratios at High Galactic Latitudes
The Astrophysical JournalInterstellar dust at high Galactic latitudes can influence astronomical foreground subtraction, produce diffuse scattered light, and soften the UV spectra of quasars.
J. Michael Shull, Georgia V. Panopoulou
doaj +1 more source
On the Relation between Interstellar Spectral Features and Reddening
Acta Astronomica, 2019 It is well known that interstellar spectral features correlate with color excess E(B$-$V). This suggests that measuring intensities of these features allows one to estimate reddening of stars. The aim of this paper is to check how tight intensities of interstellar diffuse bands (DIBs)are related to the amount of extinction, measured using E(B$-$V).
Krełowski, J. +3 more
openaire +2 more sources
An All-sky 3D Dust Map Based on Gaia and LAMOST
The Astrophysical Journal Supplement SeriesWe 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
HIGH PRECISION EFFECTIVE TEMPERATURES OF F-K SUPERGIANTS AND CLASSICAL CEPHEIDS
Odessa 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