scholarly journals Kinematic Masses of Super–Star Clusters in M82 from High‐Resolution Near‐Infrared Spectroscopy

2003 ◽  
Vol 596 (1) ◽  
pp. 240-252 ◽  
Author(s):  
Nate McCrady ◽  
Andrea M. Gilbert ◽  
James R. Graham
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Star Clusters ◽  
Super Star Clusters

On-chip near-infrared spectroscopy of CO2 using high resolution plasmonic filter array

2016 ◽  
Vol 108 (22) ◽  
pp. 221106 ◽  
Author(s):  
Xinyuan Chong ◽  
Erwen Li ◽  
Kenneth Squire ◽  
Alan X. Wang
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Plasmonic Filter ◽  
Filter Array ◽  
On Chip

scholarly journals Twisted Jets from L1551 IRS5

2001 ◽  
Vol 200 ◽  
pp. 261-264
Author(s):  
Yoichi Itoh
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Spatial Variation ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Close Vicinity ◽  
Jet Structure ◽  
First Time ◽  
Bright Emission

We have carried out high-resolution near-infrared imaging observations of a protostar L1551 IRS 5 with the Subaru Telescope. The jet structure of IRS5 is resolved into two independent jets for the first time from the ground. Successive near-infrared spectroscopy has revealed that the jet emission is dominated by [Fe II] lines in the J and H-bands. While the visual-extinction reaches more than 20 mag in the close vicinity of IRS 5, it decreases rapidly at ∼1″ from IRS 5 and remains constant around 7 mag at larger distances. The twisted structure and bright emission knots are intrinsic to the jets, not due to a spatial variation of the extinction.

scholarly journals An in-depth look at the lunar crater Copernicus: Exposed mineralogy by high-resolution near-infrared spectroscopy

Icarus ◽  
2011 ◽  
Vol 213 (1) ◽  
pp. 43-63 ◽  
Author(s):  
Roberto Bugiolacchi ◽  
Urs Mall ◽  
Megha Bhatt ◽  
Susan McKenna-Lawlor ◽  
Marek Banaszkiewicz ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Lunar Crater

scholarly journals High‐Resolution Near‐Infrared Spectroscopy of FU Orionis Objects

2004 ◽  
Vol 609 (2) ◽  
pp. 906-916 ◽  
Author(s):  
Lee Hartmann ◽  
Kenneth Hinkle ◽  
Nuria Calvet
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Near Infrared Spectroscopy ◽  
Near Infrared

scholarly journals High Resolution Scanning of Radial Strips cut from Increment Cores by Near Infrared Spectroscopy

IAWA Journal ◽  
2007 ◽  
Vol 28 (4) ◽  
pp. 473-484 ◽  
Author(s):  
P. David Jenes ◽  
Laurence R. Schimleck ◽  
Chi-Leung So ◽  
Alexander Clark III ◽  
Richard F. Daniels
Keyword(s):  
Infrared Spectroscopy ◽  
High Resolution ◽  
Spatial Resolution ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
High Spatial Resolution ◽  
Microfibril Angle ◽  
Wood Property ◽  
Nir Spectroscopy ◽  
Wood Properties

Near infrared (NIR) spectroscopy provides a rapid method for the determination ofwood properties of radial strips. The spatial resolution of the NIR measurements has generally been limited to sections 10mm wide and as a consequence the estimation of wood properties of individual rings or within rings has not been possible. Many different NIR instruments can be used to collect NIR spectra from the surface of radial strips at relatively high spatial resolution and the purpose of this study was to compare wood property calibrations obtained using NIR spectra collected in 5 mm and 2 mm seetions with several different NIR instruments. We found that calibrations based on spectra collected in 5 mm seetions had good statistics, with those based on the Bruker Vector 22/N spectrometer the strongest. Of the three properties examined (density, microfibril angle and stiffness), density had the weakest statistics. When the spatial resolution was decreased to 2 mm, calibration and prediction statistics were weaker than those at 5 mm. RPDp's were relatively low with the highest being 1.76 for predicted stiffness based on NIR spectra obtained using the ASD Field Spec Pro spectrometer. Based on the low RPDp's, we conclude that none of the instruments examined were suitable for scanning radial strips at a spatial resolution of 2 mm.

scholarly journals Remote sensing of exoplanetary atmospheres with ground-based high-resolution near-infrared spectroscopy

2019 ◽  
Vol 629 ◽  
pp. A109 ◽  
Author(s):  
D. Shulyak ◽  
M. Rengel ◽  
A. Reiners ◽  
U. Seemann ◽  
F. Yan
Keyword(s):  
Infrared Spectroscopy ◽  
Temperature Distribution ◽  
High Resolution ◽  
Near Infrared Spectroscopy ◽  
Atmospheric Chemistry ◽  
Near Infrared ◽  
Optimal Estimation ◽  
High Resolution Spectroscopy ◽  
High Signal ◽  
Wide Range

Context. Thanks to the advances in modern instrumentation we have learned about many exoplanets that span a wide range of masses and composition. Studying their atmospheres provides insight into planetary origin, evolution, dynamics, and habitability. Present and future observing facilities will address these important topics in great detail by using more precise observations, high-resolution spectroscopy, and improved analysis methods. Aims. We investigate the feasibility of retrieving the vertical temperature distribution and molecular number densities from expected exoplanet spectra in the near-infrared. We use the test case of the CRIRES+ instrument at the Very Large Telescope which will operate in the near-infrared between 1 and 5 μm and resolving powers of R = 100 000 and R = 50 000. We also determine the optimal wavelength coverage and observational strategies for increasing accuracy in the retrievals. Methods. We used the optimal estimation approach to retrieve the atmospheric parameters from the simulated emission observations of the hot Jupiter HD 189733b. The radiative transfer forward model is calculated using a public version of the τ-REx software package. Results. Our simulations show that we can retrieve accurate temperature distribution in a very wide range of atmospheric pressures between 1 bar and 10−6 bar depending on the chosen spectral region. Retrieving molecular mixing ratios is very challenging, but a simultaneous observations in two separate infrared regions around 1.6 and 2.3 μm helps to obtain accurate estimates; the exoplanetary spectra must be of relatively high signal-to-noise ratio S∕N ≥ 10, while the temperature can already be derived accurately with the lowest value that we considered in this study (S∕N = 5). Conclusions. The results of our study suggest that high-resolution near-infrared spectroscopy is a powerful tool for studying exoplanet atmospheres because numerous lines of different molecules can be analyzed simultaneously. Instruments similar to CRIRES+ will provide data for detailed retrieval and will provide new important constraints on the atmospheric chemistry and physics.

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