Near Infrared Photometry of Southern Pairs and Triplets of Galaxies

AbstractWe present near infrared photometry of select pairs and triplets of galaxies observed with the CASPIR camera attached to the 2.3m Advanced Technology Telescope at Siding Spring Observatory, Australia. The preliminary results show that galaxies in pairs or triplets present near infrared colors that are redder than normal galaxies. We also performed a morphological analysis using bi-dimensional Fourier Transform techniques, as well as classical bulge + disk fits. Compared to isolated galaxies, the light distribution of galaxies in pairs and triplets often needs a larger number of Fourier coefficients to be well represented. Also, light profiles usually show deviations from the exponential disk (disk distortions, strong bars, etc.). In the future we intend to define some method to quantify the strength of the interactions by using the Fourier coefficients and/or the magnitude of the deviations from the classical Sersic + exponential laws.

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Extending the Red Giant Branch versus Metallicity Calibration toward Metal-poor Systems: Near-Infrared Photometry of the Galactic Globular Clusters M56 and M15

The Astronomical Journal ◽

10.1086/301363 ◽

2000 ◽

Vol 119 (5) ◽

pp. 2274-2281 ◽

Cited By ~ 10

Author(s):

Valentin D. Ivanov ◽

Jordanka Borissova ◽

Almudena Alonso-Herrero ◽

Tatiana Russeva

Keyword(s):

Globular Clusters ◽

Near Infrared ◽

Infrared Photometry ◽

Galactic Globular Clusters ◽

Red Giant

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Application of Fourier transform near-infrared spectroscopy combined with GC in rapid and simultaneous determination of essential components in Amomum villosum

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy ◽

10.1016/j.saa.2021.119426 ◽

2021 ◽

Vol 251 ◽

pp. 119426

Author(s):

Huan-Jia Guo ◽

Wen-Feng Weng ◽

Hong-Ning Zhao ◽

Jin-Feng Wen ◽

Rong Li ◽

...

Keyword(s):

Fourier Transform ◽

Infrared Spectroscopy ◽

Simultaneous Determination ◽

Near Infrared Spectroscopy ◽

Near Infrared ◽

Essential Components ◽

Amomum Villosum

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Major ergot alkaloids in naturally contaminated cool-season barley grain grown under a cold climate condition in western Canada, explored with near-infrared (NIR) and fourier transform mid-infrared (ATR-FT/MIR) spectroscopy

Food Control ◽

10.1016/j.foodcont.2019.03.025 ◽

2019 ◽

Vol 102 ◽

pp. 221-230 ◽

Cited By ~ 5

Author(s):

Haitao Shi ◽

Warren Schwab ◽

Na Liu ◽

Peiqiang Yu

Keyword(s):

Fourier Transform ◽

Near Infrared ◽

Ergot Alkaloids ◽

Barley Grain ◽

Cold Climate ◽

Western Canada ◽

Climate Condition ◽

Cool Season ◽

Mid Infrared ◽

Mir Spectroscopy

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Room-Temperature Near-Infrared Metastable Species Measured by Phase-Sensitive Lock-in and Fourier Transform Techniques

Journal of the Chinese Chemical Society ◽

10.1002/jccs.199800075 ◽

1998 ◽

Vol 45 (4) ◽

pp. 503-508 ◽

Cited By ~ 2

Author(s):

Pi-Tai Chou ◽

Youn-Chan Chen ◽

Shu-Juan Chen ◽

Min-Zen Lee ◽

Ching-Yen Wei ◽

...

Keyword(s):

Fourier Transform ◽

Room Temperature ◽

Near Infrared ◽

Phase Sensitive ◽

Lock In

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Near infrared photometry of stellar maser sources

Chinese Astronomy and Astrophysics ◽

10.1016/0275-1062(86)90057-3 ◽

1986 ◽

Vol 10 (1) ◽

pp. 62-66 ◽

Cited By ~ 2

Author(s):

Ke-ping Zhou ◽

Yun-xiang Hao ◽

Pei-sheng Chen ◽

Yun Zhang ◽

Heng Gao

Keyword(s):

Near Infrared ◽

Infrared Photometry ◽

Maser Sources

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Aperture Synthesis CO(J=1—0) Observations and Near-Infrared Photometry of the Non-Barred Seyfert Galaxy NGC 5033

Publications of the Astronomical Society of Japan ◽

10.1093/pasj/55.1.103 ◽

2003 ◽

Vol 55 (1) ◽

pp. 103-119 ◽

Cited By ~ 10

Author(s):

Kotaro Kohno ◽

Baltasar Vila-Vilaró ◽

Seiichi Sakamoto ◽

Ryohei Kawabe ◽

Sumio Ishizuki ◽

...

Keyword(s):

Near Infrared ◽

Seyfert Galaxy ◽

Aperture Synthesis ◽

Infrared Photometry

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Rapid Determination of Heartwood Extractives in Larix sp. by Means of Fourier Transform near Infrared Spectroscopy

Journal of Near Infrared Spectroscopy ◽

10.1255/jnirs.336 ◽

2002 ◽

Vol 10 (3) ◽

pp. 203-214 ◽

Cited By ~ 69

Author(s):

N. Gierlinger ◽

M. Schwanninger ◽

B. Hinterstoisser ◽

R. Wimmer

Keyword(s):

Fourier Transform ◽

Near Infrared ◽

Cross Validation ◽

Nir Spectroscopy ◽

Solid Wood ◽

Hot Water ◽

Extractive Content ◽

Fast Method ◽

Wood Powder ◽

Test Set

The feasibility of Fourier transform near infrared (FT-NIR) spectroscopy to rapidly determine extractive and phenolic content in heartwood of larch trees ( Larix decidua MILL., L. leptolepis (LAMB.) CARR. and the hybrid L. x eurolepis) was investigated. FT-NIR spectra were collected from wood powder and solid wood using a fibre-optic probe. Partial Least Squares (PLS) regression analyses were carried out describing relationships between the data sets of wet laboratory chemical data and the FT-NIR spectra. Besides cross and test set validation the established models were subjected to a further evaluation step by means of additional wood samples with unknown extractive content. Extractive and phenol contents of these additional samples were predicted and outliers detected through Mahalanobis distance calculations. Models based on the whole spectral range and without data pre-processing performed well in cross-validation and test set validation, but failed in the evaluation test, which is based on spectral outlier detection. But selection of data pre-processing methods and manual as well as automatic restriction of wavenumber ranges considerably improved the model predictability. High coefficients of determination ( R2) and low root mean square errors of cross-validation ( RMSECV) were obtained for hot water extractives ( R2 = 0.96, RMSECV = 0.86%, range = 4.9–20.4%), acetone extractives ( R2 = 0.86, RMSECV = 0.32%, range = 0.8–3.6%) and phenolic substances ( R2 = 0.98, RMSECV = 0.21%, range = 0.7–4.9%) from wood powder. The models derived from wood powder spectra were more precise than those obtained from solid wood strips. Overall, NIR spectroscopy has proven to be an easy to facilitate, reliable, accurate and fast method for non-destructive wood extractive determination.

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