Polarization in broad emission lines of active galactic nuclei
Sign Up to like & getrecommendations! Published in 2021 at "Astronomische Nachrichten"
DOI: 10.1002/asna.20210089
Abstract: Funding Information Ministry of Education, Science and Technological Development of R. Serbia, 451-03-68/202014/200002. 451-039/2021-14/200104. Ministry of Science and Higher Education of the Russian Federation, We discuss the polarization of broad emission lines in the type… read more here.
Keywords: polarization broad; geometry; polarization; broad emission ... See more keywords
An atlas of star-forming galaxy equivalent widths
Sign Up to like & getrecommendations! Published in 2017 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-017-3178-9
Abstract: We present an atlas of starburst galaxy emission lines spanning 10 orders of magnitude in ionizing flux and 7 orders of magnitude in hydrogen number density. Coupling SEDs from Starburst99 with photoionization calculations from Cloudy,… read more here.
Keywords: emission lines; star forming; atlas star; equivalent widths ... See more keywords
Proposed Optical Manipulation of Nanoparticles to Access and Select Emission Lines.
Sign Up to like & getrecommendations! Published in 2025 at "Nano letters"
DOI: 10.1021/acs.nanolett.4c05926
Abstract: Optical manipulation of nanomaterials using light resonant with material excitations holds promise for enhancing optical forces and sorting particles by unique quantum properties. Conventional resonant optical sorting mainly relies on absorption and scattering forces, making… read more here.
Keywords: optical manipulation; manipulation nanoparticles; emission; proposed optical ... See more keywords
Intriguing X-ray and optical variations of the γ Cassiopeiae analog HD 45314
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201731782
Abstract: A growing number of Be and Oe stars, named the gamma Cas stars, are known for their unusually hard and intense X-ray emission. This emission could either trace accretion by a compact companion or magnetic… read more here.
Keywords: disk; emission lines; ray emission; ray ... See more keywords
Forbidden line diagnostics of photoevaporative disc winds
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1767
Abstract: Photoevaporation driven by high energy radiation from the central star plays an important role in the evolution of protoplanetary discs. Photoevaporative winds have been unambiguously detected through blue-shifted emission lines, but their detailed properties remain… read more here.
Keywords: disc winds; disc; emission lines; line ... See more keywords
Carbon monoxide emission lines reveal an inverted atmosphere in the ultra hot Jupiter WASP-33 b consistent with an eastward hot spot
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1103
Abstract: We report the first detection of CO emission at high spectral resolution in the day-side infrared thermal spectrum of an exoplanet. These emission lines, found in the atmosphere of the transiting ultra hot Jupiter (UHJ)… read more here.
Keywords: hot jupiter; emission lines; emission; hot spot ... See more keywords
Unveiling stellar aurorae: Simulating auroral emission lines in hot stars induced by high-energy irradiation
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae1273
Abstract: Auroral emission lines result from the interaction between magnetic field and stellar wind, offering valuable insights into physical properties and processes occurring within magnetospheres of celestial bodies. While extensively studied in planetary and exoplanetary atmospheres,… read more here.
Keywords: high energy; irradiation; emission; lines hot ... See more keywords
Time-dependent metal ionization and the persistence of collisionally excited emission lines in the diffuse ionized gas of star forming galaxies
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae2549
Abstract: We extend our time-dependent hydrogen ionization simulations of diffuse ionized gas to include metals important for collisional cooling and diagnostic emission lines. The combination of heating from supernovae and time-dependent collisional and photoionization from midplane… read more here.
Keywords: time dependent; ionization; gas; emission ... See more keywords
Spectroscopy of a sample of unidentified gamma-ray fermi sources
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae587
Abstract: The fourth-DR3 version (4FGL-DR3) of the Fermi/LAT catalogue of γ-ray sources contains ∼1000 objects at a galactic latitude |b| > 10○ which are not identified with an optical counterpart (UGS). We performed a systematic study… read more here.
Keywords: spectroscopy; radio; emission lines; fermi ... See more keywords
Metallicity of Active Galactic Nuclei from ultraviolet and optical emission lines – II. Revisiting the C43 metallicity calibration and its implications
Sign Up to like & getrecommendations! Published in 2025 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staf1407
Abstract: In this study, a new semi-empirical calibration is proposed between ultraviolet emission lines (C iii]λ1909, C ivλ1549, He ii]λ1640) of type 2 AGNs and their metallicity (Z). This calibration is derived by comparing a large sample of 106… read more here.
Keywords: metallicity; metallicity active; metallicity calibration; emission lines ... See more keywords
Resolving the nature and putative nebular emission of GS9422: an obscured AGN without exotic stars
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staf718
Abstract: Understanding the sources that power nebular emission in high-redshift galaxies is fundamentally important not only for shedding light onto the drivers of reionisation, but to constrain stellar populations and the growth of black holes. Here… read more here.
Keywords: nebular emission; gs9422; resolving nature; continuum ... See more keywords