scholarly journals Calcium Features in the “Featureless” Continuum of Seyfert Nuclei: Evidence for a Young Stellar Population?

1989 ◽  
Vol 134 ◽  
pp. 560-561
Author(s):  
Angeles I. Díaz ◽  
Elena Terlevich ◽  
Roberto Terlevich

We have obtained intermediate resolution spectra for about 30 galaxies, normal and active, in the near infrared region covering the CaII triplet (λλ 7800–9300 Å). The data were obtained with the INT at the Roque de los Muchachos Observatory in La Palma, Spain using the Intermediate Dispersion Spectrograph and a GEC CCD detector. Details of these observations are given elsewhere (Terlevich et al. 1988). Our data show that active (Seyfert galaxies and LINERS) and normal galaxies have comparable nuclear CaII strengths and line widths.

2021 ◽  
Author(s):  
Abhineet Verma ◽  
Sk Saddam Hossain ◽  
Sailaja S Sunkari ◽  
Joseph Reibenspies ◽  
Satyen Saha

Lanthanides (LnIII) are well known for their characteristic emission in the Near-Infrared Region (NIR). However, direct excitation of lanthanides is not feasible as described by Laporte’s parity selection rule. Here,...


Author(s):  
Cong Shen ◽  
Yan Qing Zhu ◽  
Zixiao Li ◽  
Jingling Li ◽  
Hong Tao ◽  
...  

InP quantum dots (QDs) are considered as the most promising alternative to Cd-based QDs with the lower toxicity and emission spectrum tunability ranging from visible to near-infrared region. Although high-quality...


LWT ◽  
2021 ◽  
Vol 143 ◽  
pp. 111092
Author(s):  
Jose Marcelino S. Netto ◽  
Fernanda A. Honorato ◽  
Patrícia M. Azoubel ◽  
Louise E. Kurozawa ◽  
Douglas F. Barbin

Nanoscale ◽  
2020 ◽  
Vol 12 (41) ◽  
pp. 21459-21459
Author(s):  
Charlotte Marshall

Retraction of ‘Water-soluble multidentate polymers compactly coating Ag2S quantum dots with minimized hydrodynamic size and bright emission tunable from red to second near-infrared region’ by Rijun Gui et al., Nanoscale, 2014, 6, 5467–5473, DOI: 10.1039/C4NR00282B.


2019 ◽  
Vol 10 (25) ◽  
pp. 6330-6335 ◽  
Author(s):  
Jinhu Wang ◽  
Yinhua Yang ◽  
Hua Li ◽  
Jun Gao ◽  
Ping He ◽  
...  

Preparation of color-tunable and stable plasmonic MoO3 nanomaterials remains challenging, due to the lack of an effective preparation strategy and surface protection in heavily doped MoO3.


2017 ◽  
Vol 53 (64) ◽  
pp. 8960-8963 ◽  
Author(s):  
A. Beneduci ◽  
G. A. Corrente ◽  
E. Fabiano ◽  
V. Maltese ◽  
S. Cospito ◽  
...  

Novel H-shaped tetrarylamine mixed valence compounds showing orthogonal electronic coupling generate voltage-dependent electro-optical modulation in the near infrared region.


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