Results 21 to 30 of about 5,298,176 (299)

The dust origin of the Broad Line Region and the model consequences for AGN unification scheme [PDF]

, 2015
We propose a very simple physical mechanism responsible for the formation of the Low Ionization Line part of the Broad Line Region in Active Galactic Nuclei.
Adhikari, Tek P., Czerny, Bozena, Hryniewicz, Krzysztof, Krupa, Magdalena, Kurcz, Agnieszka, Modzelewska, Justyna, Nikolajuk, Marek, Petrogalli, Francesco, Pych, Wojtek, Zycki, Piotr T.   +9 more
core   +1 more source

Stark Broadening of Neutral Boron Lines

Atoms, 2019
Stark broadening parameters, width and shift, of lines within B I 2s22p−2s2ns spectral series have been calculated. Semi-classical theory in impact approximation has been applied. Temperature dependence of Stark parameters has been studied.
Magdalena Christova, Milan S. Dimitrijević, Sylvie Sahal-Bréchot   +2 more
doaj   +1 more source

Constraining the Star Formation Histories of Spiral Bulges [PDF]

, 1999
Long-slit spectroscopic observations of line-strengths and kinematics made along the minor axes of four spiral bulges are reported. Comparisons are made between central line-strengths in spiral bulges and those in other morphological types.
Proctor, R. N., Reid, I. N., Sansom, A. E.   +2 more
core   +3 more sources

Exceptional AGN-driven turbulence inhibits star formation in the 3C 326N radio galaxy [PDF]

, 2014
We detect bright [CII]158μm line emission from the radio galaxy 3C 326N at z=0.09, which shows weak star formation (SFR⊙~yr−1) despite having strong H2 line emission and 2×109M⊙ of molecular gas.
Aalto, Abrahamsson, Alatalo, Alatalo, Alatalo, Aniano, Appleton, Bayet, Bell, Bennett, Best, Biermann, Blitz, Bregman, Béthermin, Cardelli, Carilli, Cicone, Cicone, Combes, Compiègne, Crocker, Dasyra, Dasyra, Dasyra, de Gasperin, de Koff, de Koff, Dicken, Draine, Díaz-Santos, E. Falgarone, F. Boulanger, F. Combes, Fabian, Fabian, Falgarone, Falgarone, Federrath, Federrath, Ferland, Feruglio, Fischer, Förster Schreiber, G. Pineau des Forêts, Gaibler, Gaibler, García-Burillo, Glassgold, Godard, Goldsmith, Goldsmith, González-Alfonso, Gopal, Goto, Gry, Guillard, Guillard, Habart, Hanasz, Helou, Hily-Blant, Indriolo, J. Bernard-Salas, Jaquet, Jubelgas, Kazandjian, Kormendy, Krumholz, Labiano, Laing, Lebouteiller, Lehnert, Lockman, M. D. Lehnert, Ma, Mahony, Maiolino, Malhotra, Malhotra, Martel, Martig, Martig, Mashian, McNamara, Meli, Mittal, Morganti, Morganti, Morganti, Morganti, Müller-Sánchez, Nesvadba, Nesvadba, Ogle, Ogle, Ostriker, P. Guillard, Pety, Poglitsch, Rafferty, Rawlings, Rigopoulou, Rosenberg, Roussel, Sani, Savage, Serra, Sijacki, Silk, Silk, Silk, Spoon, Stacey, Sturm, Thomas, Wagner, Wagner, Willis, Wolfire, Young   +120 more
core   +6 more sources

Non-LTE LINE FORMATION FOR S I

Odessa Astronomical Publications, 2008
A comprehensive model atom for non-LTE line formation calculations for neutral sulfur in the spectra of F-K stars is presented. All the calculations were made using the 65-level atomic model of S I and Kurucz's atmosphere models with Teff = 5000 ÷ 6500 K,
S. A. Korotin
doaj   +1 more source

LIMpy: A Semianalytic Approach to Simulating Multiline Intensity Maps at Millimeter Wavelengths

The Astrophysical Journal, 2023
Mapping of multiple lines such as the fine-structure emission from [C ii ] (157.7 μ m), [O iii ] (52 and 88.4 μ m), and rotational emission lines from CO are of particular interest for upcoming line intensity mapping (LIM) experiments at millimeter ...
Anirban Roy, Dariannette Valentín-Martínez, Kailai Wang, Nicholas Battaglia, Alexander van Engelen   +4 more
doaj   +1 more source

Tie-Line Analysis Reveals Interactions Driving Heteromolecular Condensate Formation

Physical Review X, 2022
Phase separation of biomolecules gives rise to membraneless organelles that contribute to the spatiotemporal organization of the cell. In most cases, such biomolecular condensates contain multiple components, but the manner in which interactions between ...
Daoyuan Qian, Timothy J. Welsh, Nadia A. Erkamp, Seema Qamar, Jonathon Nixon-Abell, Georg Krainer, Peter St. George-Hyslop, Thomas C. T. Michaels, Tuomas P. J. Knowles   +8 more
doaj   +1 more source

LINE FORMATION IN SPECTRA OF X-RAY NOVAE

Odessa Astronomical Publications, 2017
Results of X-ray Novae (XN) optical spectra computation are presented. The continuum and Balmer line are calculated. The model of XN as a self-irradiated accretion disk is used.
V. F. Suleimanov, V. V. Shimansky
doaj   +1 more source

The Influence of Dust Formation Modelling on Na I and K I Line Profiles in Substellar Atmospheres

, 2008
We aim to understand the correlation between cloud formation and alkali line formation in substellar atmospheres.We perform line profile calculations for Na I and K I based on the coupling of our kinetic model for the formation and composition of dust ...
Burgasser A. J., C. M. S. Johnas, Ch. Helling, Helling Ch., Helling Ch., M. Dehn, Magain P., P. H. Hauschildt, P. Woitke, Schweitzer A., Tsuji T.   +10 more
core   +1 more source

The effect of continuum scattering processes on spectral line formation [PDF]

, 1999
The effect of scattering processes in the continuum on the formation of spectral lines in a static atmosphere with an arbitrary distribution of the internal energy sources is investigated using Ambartsumian's principle of invariance.
G Israelian, Haruthyunian, Haruthyunian, Israelian, Nikoghossian, Nikoghossian, Schuster   +6 more
core   +2 more sources