Results 51 to 60 of about 19,928 (198)
Reddening Behaviors of Galaxies in the SDSS Photometric System
, 2008 We analyze the behaviors of reddening vectors in the SDSS photometric system for galaxies of different morphologies, ages, and redshifts. As seen in other photometric systems, the dependence of reddening on the spectral energy distribution (SED) and the ...
Grebel E. K. +2 more
core +1 more source
The deep eclipses of RW Aur revisited by long‐term photometric and spectroscopic monitoring
Astronomische Nachrichten, Volume 345, Issue 4, May 2024.Abstract RW Aurigae is a young stellar system containing a classical T Tauri star as the primary component. It shows deep, irregular dimmings, first detected in 2010. At the University Observatory Jena, we carried out optical follow‐up observations. We performed multiband (BVRI) photometry of the system with the Cassegrain‐Teleskop‐Kamera II and the ...
Oliver Lux +2 more
wiley +1 more source
An Empirical Extinction Curve Revealed by Gaia XP Spectra and LAMOST
The Astrophysical JournalWe 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
Interstellar Reddening Effect on the Age Dating of Population II Stars
Galaxies, 2017 The age measurement of the stellar halo component of the Galaxy is based mainly on the comparison of the main sequence turn-off luminosity of the globular cluster (GC) stars with theoretical isochrones.
Sergio Ortolani +2 more
doaj +1 more source
Novel Correlations between Diffuse Interstellar Bands and Optical Reddening
Research Notes of the AAS, 2022 Abstract The relatively new and expansive Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands was analyzed to identify novel correlations between diffuse interstellar bands (DIBs) and optical reddening E(B − V), with a principal aim being to facilitate future identifications of the host molecular carriers.
Emily R. Smith +5 more
openaire +1 more source
The Stellar Content of Obscured Galactic Giant H II Regions IV.: NGC3576 [PDF]
, 2002 We present deep, high angular resolution near-infrared images of the obscured Galactic Giant H II region NGC3576. Our images reach objects to ~3M_sun. We collected high signal-to-noise K-band spectra of eight of the brightest objects, some of which are ...
A. Damineli +18 more
core +2 more sources
oMEGACat. VII. Tracing Interstellar and Intracluster Medium of ω Centauri Using Sodium Absorptions
The Astrophysical JournalWe investigate the foreground interstellar medium along the line of sight and intracluster medium of ω Centauri ( ω Cen) by measuring the equivalent width of Na I D absorptions from MUSE observations. The large line-of-sight velocity difference between ω
Z. Wang +16 more
doaj +1 more source
Probing interstellar extinction near the 30 Doradus nebula with red giant stars
, 2013 We have studied the interstellar extinction in a field of 3' x 3' located about 6' SW of 30 Doradus in the Large Magellanic Cloud (LMC). Hubble Space Telescope observations in the U, B, V, I and Halpha bands reveal patchy extinction in this field.
De Marchi, Guido +2 more
core +1 more source
The Astrophysical Journal, 2023 We investigate the mass–metallicity relationship of star-forming galaxies by analyzing the absorption line spectra of ∼200,000 galaxies in the Sloan Digital Sky Survey.
Eva Sextl +3 more
doaj +1 more source
Influence of interstellar and atmospheric extinction on light curves of eclipsing binaries
, 2004 Interstellar and atmospheric extinctions redden the observational photometric data and they should be handled rigorously. This paper simulates the effect of reddening for the modest case of two main sequence T1 = 6500K and T2 = 5500K components of a ...
A. Prša +7 more
core +1 more source