The University of Tokyo Atacama Observatory 6.5m telescope : On-sky performance of the near-infrared instrument SWIMS on the Subaru telescope

Abstract Interseeding a legume, such as alfalfa (Medicago sativa), into bermudagrass (Cynodon dactylon) for baleage production can improve forage quality, reduce supplementation needs, and minimize production losses. The objective of this research was to compare the nutritive value and yield of bermudagrass with and without interseeded alfalfa when produced as baleage. This study was conducted at the University of Georgia Coastal Plain Experiment Station in Tifton, GA, on an established field of ‘Tifton 85’ (T85) bermudagrass. Ten 0.2-ha plots were randomly assigned to either T85+N or T85 interseeded with ‘Bulldog 805’ alfalfa (T85+Alf). T85+N received N fertilization (84 kg N/ ha) four times each growing season. Plots were harvested at early bloom stage every 28 to 35 days from 2016 to 2018, baled at 40–60% moisture, and individually wrapped. At each harvest, plots were evaluated for botanical composition and forage yield, and bales were sampled prior to wrapping for nutritive value analysis. Plots were also evaluated for botanical composition using the point-transect method 10 days post-harvest. Data were analyzed using mixed models and least significant differences at α = 0.05. Although seasonal yields were greater in the T85+N during year 1, alfalfa-bermudagrass plots produced at least one additional harvest each season of the study, and on average 8 cuttings per season each year following establishment. Ultimately this contributed to greater (P < 0.0001) cumulative yield in the alfalfa-bermudagrass treatment (34,783 vs. 25,608 kg/ha, respectively). Analyses of nutritive value through near-infrared spectroscopy (NIR) show that CP and in-vitro true digestibility (IVTD) were greater (P = 0.005 and P = 0.034, respectively) in the alfalfa-bermudagrass treatment than the bermudagrass-only treatment (14.0 vs 11.4% CP and 66.7 vs. 60.2% IVTD, respectively). Improvements in seasonal yield and nutritive value makes bermudagrass interseeded with alfalfa a viable option for baleage producers in the Southeast.

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CIRCE: The Canarias InfraRed Camera Experiment for the Gran Telescopio Canarias

Journal of Astronomical Instrumentation ◽

10.1142/s2251171718500022 ◽

2018 ◽

Vol 07 (01) ◽

pp. 1850002 ◽

Cited By ~ 1

Author(s):

Stephen S. Eikenberry ◽

Miguel Charcos ◽

Michelle L. Edwards ◽

Alan Garner ◽

Nestor Lasso-Cabrera ◽

...

Keyword(s):

Near Infrared ◽

Mechanical Design ◽

Infrared Camera ◽

High Time Resolution ◽

Low Resolution ◽

Novel Approach ◽

Narrowband Imaging ◽

Imaging Polarimetry ◽

Performance Results ◽

The University

The Canarias InfraRed Camera Experiment (CIRCE) is a near-infrared (1–2.5[Formula: see text][Formula: see text]m) imager, polarimeter and low-resolution spectrograph operating as a visitor instrument for the Gran Telescopio Canarias (GTC) 10.4-m telescope. It was designed and built largely by graduate students and postdocs, with help from the University of Florida (UF) astronomy engineering group, and is funded by the UF and the US National Science Foundation. CIRCE is intended to help fill the gap in near-infrared capabilities prior to the arrival of Especrografo Multiobjecto Infra-Rojo (EMIR) to the GTC and will also provide the following scientific capabilities to compliment EMIR after its arrival: high-resolution imaging, narrowband imaging, high-time-resolution photometry, imaging polarimetry, and low resolution spectroscopy. In this paper, we review the design, fabrication, integration, lab testing, and on-sky performance results for CIRCE. These include a novel approach to the opto-mechanical design, fabrication, and alignment.

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Isotope shifts in the [10.1]4–X4 (0–0) and [10.5]3–X4 (0–0) transitions of NdOThis article is part of a Special Issue on Spectroscopy at the University of New Brunswick in honour of Colan Linton and Ron Lees.

Canadian Journal of Physics ◽

10.1139/p08-066 ◽

2009 ◽

Vol 87 (5) ◽

pp. 537-541 ◽

Cited By ~ 1

Author(s):

Alain Bernard ◽

Amanda J. Ross

Keyword(s):

Near Infrared ◽

Thermal Emission ◽

Emission Spectra ◽

Spectroscopic Constants ◽

Isotopic Shifts ◽

Oppenheimer Approximation ◽

Global Fit ◽

Atomic Lines ◽

The University ◽

Line Positions

High-resolution Fourier transform thermal emission spectra of NdO (natural isotopic composition) have been recorded in the near infrared. Rotational analyses of the 0–0 band of the [10.132]4–X(1)4 system have been performed for all seven isotopomers, and the 0–0 band of the [10.506]3–X(1)4 system has been analysed for 142NdO, 144NdO, and 146NdO. Experimental data have been merged into a global fit to obtain a unique set of isotopically consistent rotational spectroscopic constants, scaled to 142NdO by assuming isotopic relationships within the Born–Oppenheimer approximation, but with independent band origins. These vibronic energy shifts reflect the isotopic shifts observed in some atomic lines also seen in the spectrum. A catalogue of experimental line positions and o−c values is available as Supplementary data.

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The Florida Barred Galaxy Program

International Astronomical Union Colloquium ◽

10.1017/s0252921100050090 ◽

1996 ◽

Vol 157 ◽

pp. 398-404 ◽

Cited By ~ 2

Author(s):

J. H. Hunter ◽

S. T. Gottesman

Keyword(s):

Near Infrared ◽

University Of Florida ◽

Infrared Observations ◽

Density Distributions ◽

Group Members ◽

Grid Codes ◽

Barred Spiral Galaxies ◽

Pattern Speeds ◽

Tree Codes ◽

The University

AbstractFor more than a decade, a group at the University of Florida has been constructing models of barred spiral galaxies that we have observed at the VLA. Group members include: S. T. Gottesman, G. Contopoulos, J. H. Hunter, several Ph.D. students, and collaborators at other institutions. The HI distributions in our galaxies are either gas rich, or nearly devoid of gas, in their bar regions. Initially, we deduced density distributions and potentials of the stellar disks and bars from near infrared observations, modeled the gas response assuming different pattern speeds, etc., and compared the models with our HI observations. This simple approach is successful in some cases, such as NGC 3359, but less successful in others. More recently, our approach has been toward selfconsistent models, including stars and gas. Our techniques range from the Contopoulos-Grosbøl-Kaufmann stellar dynamical approach to methods exploiting grid codes and SPH tree codes. Some of our observations and models will be reviewed, and some new results will be presented.

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The New Near Infrared Array Camera at the University of Rochester

Publications of the Astronomical Society of the Pacific ◽

10.1086/131517 ◽

1985 ◽

Vol 97 ◽

pp. 183 ◽

Cited By ~ 12

Author(s):

W. J. Forrest ◽

A. Moneti ◽

C. E. Woodward ◽

J. L. Pipher ◽

A. Hoffman

Keyword(s):

Near Infrared ◽

The University ◽

Array Camera ◽

Infrared Array

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Near Infrared Spectroscopy at the University of Cordoba, Spain

NIR news ◽

10.1255/nirn.182 ◽

1993 ◽

Vol 4 (2) ◽

pp. 15-15

Author(s):

Ana Garrido-Varo

Keyword(s):

Infrared Spectroscopy ◽

Near Infrared Spectroscopy ◽

Near Infrared ◽

The University

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A Near Infrared Survey of the LMC

Symposium - International Astronomical Union ◽

10.1017/s0074180900112264 ◽

1999 ◽

Vol 186 ◽

pp. 59-59

Author(s):

Takehiko Wada ◽

Munetaka Ueno ◽

Toshikazu Ebisuzaki ◽

Yosuke Ohno

Keyword(s):

Near Infrared ◽

New South ◽

Black Body ◽

Large Magellanic Cloud ◽

Point Sources ◽

Be Stars ◽

Star Forming ◽

South Wales ◽

The University ◽

Infrared Survey

We surveyed the central 3° × 6° region of the Large Magellanic Cloud (LMC) with angular resolution of 10″.0 at the J(1.25μm), H(1.65μm) and K′(2.15μm) bands. The observations were performed from Oct to Nov, 1994 at the Siding Spring Observatory. We used a 25 cm/F3.5 Newtonian telescope equipped with a 512×512 PtSi-Camera (Ueno et al. 1992). The plate scale was 4.″6 × 6.″0/pixel and the total field of view was 40.′2 × 52.′3. The system was attached onto the Automated Patrol Telescope of the University of New South Wales. The limiting magnitudes of the survey were 13.6, 11.9, and 10.0 magnitude (3σ) at the J, H, and K′ bands, respectively. The positions and the J, H, and K′ magnitudes were derived for 1599 point sources whose S/N ratio were more than four at the K′-band. The dominant components of the sources are red super giants (RSG), luminous M-type giants and AGB stars in the LMC. The distributions of RSG, luminous giants and CO line flux are spatially different from each other. This supports the idea that the position of the active star forming region has changed during the past 108 years. The detected sources are cross-identified with the IRAS Point Source Catalog. Sixty-two of 680 IRAS sources in the region spatially coincide with the detected sources and the spectrum energy distributions from 1.25μm to 100μm were derived for these 62 sources. Half of them are well described by a black body spectrum, while the others show a flat or redder spectrum. These latter sources are supposed to be stars with dust envelopes.

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