Results 51 to 60 of about 56,155 (210)
The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era
Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013 A new generation of wide‐field emission‐line surveys based on integral field units (IFU) is allowing us to obtain spatially resolved information of the gas‐phase emission in nearby late‐type galaxies, based on large samples of HII regions and full two‐dimensional coverage.
Fernando Fabián Rosales-Ortega +1 more
wiley +1 more source
A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm
Astronomische Nachrichten, Volume 346, Issue 5, June 2025.ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber +3 more
wiley +1 more source
Studying the Interstellar Medium of H II/BCD Galaxies Using IFU Spectroscopy
Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013 We review the results from our studies, and previous published work, on the spatially resolved physical properties of a sample of H ii/BCD galaxies, as obtained mainly from integral‐field unit spectroscopy with Gemini/GMOS and VLT/VIMOS. We confirm that, within observational uncertainties, our sample galaxies show nearly spatially constant chemical ...
Patricio Lagos +2 more
wiley +1 more source
ULTRA FAST EVOLUTION OF SAKURAI's OBJECT
Odessa Astronomical Publications, 2017 We model theoretical spectral energy distributions of the "born-again" V4334 Sgr for our grid of hydrogen-deficient model atmospheres with a range of Teff = 4000-5000 K and log g = 1.0 - 0.0.
Ya. Pavlenko
doaj +1 more source
Lactea: Web‐Based Spectrum‐Preserving Multi‐Resolution Visualization of the GAIA Star Catalog
Computer Graphics Forum, Volume 44, Issue 3, June 2025.Abstract The explosion of data in astronomy has resulted in an era of unprecedented opportunities for discovery. The GAIA mission's catalog, containing a large number of light sources (mostly stars) with several parameters such as sky position and proper motion, is playing a significant role in advancing astronomy research and has been crucial in ...
Reem Alghamdi +3 more
wiley +1 more source
Interstellar velocity components towards reddened stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 ABSTRA C T The paper analyses the profiles of interstellar features observed towards heavily reddened stars. All the features show spectacular Doppler-splitting but the radial velocities of the single components as well as the number of such components vary from feature to feature in the same spectrum.
G. A. Galazutdinov +2 more
openaire +1 more source
Revisiting Variable Stars Near Globular Clusters South of −29° Declination
Astronomische Nachrichten, Volume 346, Issue 2, February 2025.ABSTRACT We review an often‐cited but seldom‐accessed catalogue by Fourcade and Laborde (1966) of 785 variable stars near 47 southern Galactic globular clusters, and recover the locations of 85 stars that were not incorporated into subsequent variable star catalogues and hence have become “lost” to the literature.
Andrew C. Layden +7 more
wiley +1 more source
Modeling of Interstellar Dust Grains
, 2008 Dust has two major effects on light passing through the Interstellar Medium - Interstellar Extinction and Reddening. Interstellar dust grains are typically a fraction of a micron, approximately the wavelength of blue light and hence light passing ...
Rao, Nagalakshmi A.
core +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 Towards S188, Hw4 and We1–6 [PDF]
Symposium - International Astronomical Union, 1993 Photoelectric UBV photometry of stars was carried out in the angular vicinity (radius = 15′) of 3 planetary nebulae. An extinction distance relation was constructed for the line of sight towards each planetary nebula. This relation was verified by published data on nearby stars and star clusters. The distances derived are 850 ± 300 pc for PK 128 −04 1 (
openaire +1 more source