Results 91 to 100 of about 1,020 (216)

Reddening and age for 13 southern Galactic open clusters determined from integrated spectra [PDF]

, 2001
In this study we present flux-calibrated integrated spectra in the range 3800–6800 Å for 13 concentrated open clusters with Galactic longitudes between 219° and 316°, nine of which have not been previously studied.
Ahumada, Andrea Veronica, Bica, Eduardo Luiz Damiani, E. Bica, Dutra, Carlos Maximiliano, J. J. Clariá, Claria Olmedo, Juan Jose, Torres, Maria Cristina, M. C. Torres, C. M. Dutra, A. V. Ahumada   +9 more
core   +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

Swift Ultraviolet Observations of Supernova 2014J in M82: Large Extinction from Interstellar Dust [PDF]

, 2015
We present optical and ultraviolet (UV) photometry and spectra of the very nearby and highly reddened supernova (SN) 2014J in M82 obtained with the Swift Ultra-Violet/Optical Telescope (UVOT).
Kuin, N. Paul, Smitka, Michael T., Siegel, Michael, Krisciunas, K, Krisciunas, Kevin, Wang, Lifan, de Pasquale, Massimiliano, Milne, PA, Pasquale, MD, Hartmann, DH, de Pasquale, Massımılıano, Breeveld, A, Wang, L, Brown, PJ, Smitka, MT, Hartmann, Dieter H., Brown, Peter J., Page, Mat, Page, M, Breeveld, Alice, Kuin, NPM, Siegel, M, Milne, Peter A.   +22 more
core   +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, Irrgang Andreas, Heber Ulrich   +2 more
doaj   +1 more source

Mapping the differential reddening in globular clusters [PDF]

, 2013
We build differential-reddening maps for 66 Galactic globular clusters (GCs) with archival Hubble Space Telescope WFC/ACS F606W and F814W photometry. Because of the different GC sizes (characterized by the half-light radius Rh) and distances to the Sun ...
Campos, Fabíola, Bonatto, Charles Jose, Kepler, Souza Oliveira   +2 more
core  

Variations of Interstellar Gas-to-dust Ratios at High Galactic Latitudes

The Astrophysical Journal
Interstellar 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., Galazutdinov, G., Godunova, V., Bondar, A.   +3 more
openaire   +2 more sources

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

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

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

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

The 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, Haibo Yuan, Bingqiu Chen, Maosheng Xiang, Ruoyi Zhang, Bowen Huang, Hongrui Gu, Shuaicong Wang, Jiawei Li   +8 more
doaj   +1 more source