Enabling Narrow Emission Line Widths in Colloidal Nanocrystals through Coalescence Growth

2020 ◽  
Vol 32 (17) ◽  
pp. 7524-7534
Author(s):  
James Cassidy ◽  
Cole Ellison ◽  
Jacob Bettinger ◽  
Mingrui Yang ◽  
Pavel Moroz ◽  
...  
Keyword(s):  
Emission Line ◽  
Colloidal Nanocrystals ◽  
Line Widths ◽  
Narrow Emission

Cation exchange assisted synthesis of ZnCdSe/ZnSe quantum dots with narrow emission line widths and near-unity photoluminescence quantum yields

2020 ◽  
Vol 56 (45) ◽  
pp. 6130-6133 ◽  
Author(s):  
Xiao Jin ◽  
Kanlin Xie ◽  
Tingting Zhang ◽  
Huada Lian ◽  
Zhenghe Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Emission Line ◽  
Cation Exchange ◽  
Quantum Yields ◽  
Line Widths ◽  
Narrow Emission

ZnCdSe/ZnSe quantum dots reveal a notable FWHM of 17.1 nm with a near-unity PL QY at 631 nm.

scholarly journals Upper limits on the mass of supermassive black holes from STIS archival data

2007 ◽  
Vol 3 (S245) ◽  
pp. 233-234
Author(s):  
A. Beifiori ◽  
E. M. Corsini ◽  
E. Dalla Bontà ◽  
A. Pizzella ◽  
L. Coccato ◽  
...  
Keyword(s):  
Black Holes ◽  
Emission Line ◽  
Supermassive Black Holes ◽  
Archival Data ◽  
Early Type ◽  
Preliminary Results ◽  
Upper Limits ◽  
Nearby Galaxies ◽  
Line Widths

AbstractThe growth of supermassive black holes (SMBHs) appears to be closely linked with the formation of spheroids. There is a pressing need to acquire better statistics on SMBH masses, since the existing samples are preferentially weighted toward early-type galaxies with very massive SMBHs. With this motivation we started a project aimed at measuring upper limits on the mass of the SMBHs that can be present in the center of all the nearby galaxies (D < 100 Mpc) for which STIS/G750M spectra are available in the HST archive. These upper limits will be derived by modeling the central emission-line widths ([N II] λλ6548, 6583, Hα and [S II] λλ6716, 6731) observed over an aperture of ~01 (R < 50 pc). Here we present our preliminary results for a subsample of 76 bulges.

Current-tunable lasers with a narrow emission line operating at 3.3 µm

2001 ◽  
Vol 35 (3) ◽  
pp. 360-364 ◽  
Author(s):  
A. N. Imenkov ◽  
N. M. Kolchanova ◽  
P. Kubat ◽  
K. D. Moiseev ◽  
C. Civiš ◽  
...  
Keyword(s):  
Emission Line ◽  
Tunable Lasers ◽  
Narrow Emission

scholarly journals Double-peaked narrow emission-line galaxies in LAMOST survey

2018 ◽  
Vol 482 (2) ◽  
pp. 1889-1899 ◽  
Author(s):  
M-X Wang ◽  
A-L Luo ◽  
Y-H Song ◽  
S-Y Shen ◽  
S Feng ◽  
...  
Keyword(s):  
Emission Line ◽  
Emission Line Galaxies ◽  
Narrow Emission

scholarly journals Composite Models: A Tool for Interpreting the Emission-Line Spectra of Active Galactic Nuclei

1989 ◽  
Vol 134 ◽  
pp. 316-317
Author(s):  
S.M. Viegas-Aldrovandi ◽  
M. Contini
Keyword(s):  
Energy Source ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Emission Lines ◽  
Additional Energy ◽  
Physical Conditions ◽  
Dilute Gas ◽  
Composite Models ◽  
Line Widths ◽  
Narrow Emission

In the last decade, emission-lines from a large number of active galactic nuclei (AGN) have been observed. Most of the models built to explain the observed narrow emission-lines are based on photoionization. Although these photoionization models account for the observed general features, many points remain unexplained and several authors suggest an additional energy source (Ferland and Mushotzky 1984, Ferland and Osterbrock 1986, Stasinska 1984, Viegas-Aldrovandi and Gruenwald 1988). Another possible explanation is suggested by the emitting cloud motions, which account for the observed line widths. If the clouds are moving throughout a dilute gas (n0 ≃ 300 cm−3), a shock can develop. Then, the physical conditions in the cloud are determined by the coupled effect of photoionization and shock hydrodynamics.

scholarly journals On the Effects of Dissipative Turbulence on the Narrow Emission‐Line Ratios in Seyfert Galaxies

2007 ◽  
Vol 668 (2) ◽  
pp. 730-737 ◽  
Author(s):  
S. B. Kraemer ◽  
M. C. Bottorff ◽  
D. M. Crenshaw
Keyword(s):  
Emission Line ◽  
Seyfert Galaxies ◽  
Dissipative Turbulence ◽  
Narrow Emission

The extended narrow emission-line region of NGC 7469 revisited

1986 ◽  
Vol 91 ◽  
pp. 1026 ◽  
Author(s):  
M. M. de Robertis ◽  
R. W. Pogge
Keyword(s):  
Emission Line ◽  
Line Region ◽  
Ngc 7469 ◽  
Narrow Emission

Narrow emission-line profiles of active galactic nuclei

1989 ◽  
Vol 343 ◽  
pp. 78 ◽  
Author(s):  
M. Contini ◽  
S. M. Viegas-Aldrovandi
Keyword(s):  
Emission Line ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Line Profiles ◽  
Narrow Emission

scholarly journals The 0.3 to 100 Micron Continua of Type 1 Seyferts

1987 ◽  
Vol 121 ◽  
pp. 119-126
Author(s):  
Martin J. Ward ◽  
N.P. Carleton ◽  
M. Elvis ◽  
G. Fabbiano ◽  
S.P. Willner ◽  
...  
Keyword(s):  
Emission Line ◽  
Thermal Infrared ◽  
Underlying Distribution ◽  
Narrow Emission

The continua of type 1 Seyferts from 0.3 to 100 microns have been examined. We focus on the modifying effects of dust, both in terms of absorption and re-radiation. After allowance is made for dust and the presence of extranuclear contributions to the IRAS fluxes, there remains a ubiquitous underlying distribution which we believe to be non-thermal. There is evidence that the thermal infrared components corresponding to hot and warm dust may be associated with the broad and narrow emission line regions.

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