Results 1 to 10 of about 5,688,761 (385)

A Spectral Line Survey of Selected 3 mm Bands Toward Sagittarius B2(N-LMH) Using the NRAO 12 Meter Radio Telescope and the BIMA Array I. The Observational Data [PDF]

Astrophys.J.600:234-253,2004, 2003
We have initiated a spectral line survey, at a wavelength of 3 millimeters, toward the hot molecular core Sagittarius B2(N-LMH). This is the first spectral line survey of the Sgr B2(N) region utilizing data from both an interferometer (BIMA Array) and a ...
A. Remijan, B. E. Turner, Bester M., Bogey M., Boucher D., D. N. Friedel, Gerry M. C. L., Johnson D. R., L. E. Snyder, Lafferty W. J., Lovas F. J., Lovas F. J., Lovas F. J., Lovas F. J., Lovas F. J., Schilke P., Tiemann E. J., Willemot E., Winnewisser G., Wyrowski F., Xu L.-H.   +20 more
core   +2 more sources

Lorentz Meets Fano in Spectral Line Shapes: A Universal Phase and Its Laser Control [PDF]

Science, 2013
A Phase for Fano In spectroscopy, samples placed between a steady light source and a detector are characterized based on the relative intensities of light absorbed at different frequencies.
C. Ott, A. Kaldun, P. Raith, K. Meyer, M. Laux, J. Evers, C. Keitel, C. Greene, T. Pfeifer   +8 more
semanticscholar   +1 more source

Infrared Spectroscopy of RNA Nucleosides in a Wide Range of Temperatures

Life
The RNA world hypothesis suggests that early cellular ancestors relied solely on RNA molecules for both genetic information storage and cellular functions.
Susana Iglesias-Groth, Franco Cataldo, Martina Marin-Dobrincic   +2 more
doaj   +1 more source

A Process for On-Line Spectral Analysis

Measurement + Control, 1969
As a modest contribution to the development of more problem-oriented control solutions, a simple on-line spectral-analysis process is presented and some of its possible applications discussed.
E. Moseley MSc, CEng, MIEE
doaj   +1 more source

Systematic search for spherical crystal X-ray microscopes matching 1-25 keV spectral line sources.

Review of Scientific Instruments, 2016
Spherical-crystal microscopes are used as high-resolution imaging devices for monochromatic x-ray radiography or for imaging the source itself. Crystals and Miller indices (hkl) have to be matched such that the resulting lattice spacing d is close to ...
M. Schollmeier, G. Loisel
semanticscholar   +1 more source

STAR FORMATION RELATIONS AND CO SPECTRAL LINE ENERGY DISTRIBUTIONS ACROSS THE J-LADDER AND REDSHIFT [PDF]

, 2014
We present FIR [50–300 μm]−CO luminosity relations (i.e., ) for the full CO rotational ladder from J = 1–0 up to J = 13–12 for a sample of 62 local (z ⩽ 0.1) (Ultra) Luminous Infrared Galaxies (LIRGs; LIR[8-1000 μm] > 1011 L☉) using data from Herschel ...
T. Greve, I. Leonidaki, E. Xilouris, A. Weiss, Zhi-Yu Zhang, Zhi-Yu Zhang, P. V. D. Werf, S. Aalto, L. Armus, T. Díaz-Santos, A. Evans, A. Evans, J. Fischer, Yu Gao, E. González-Alfonso, A. Harris, Christian Henkel, Christian Henkel, R. Meijerink, D. Naylor, H. Smith, M. Spaans, G. Stacey, S. Veilleux, F. Walter   +24 more
semanticscholar   +1 more source

Special Issue on Spectral Line Shapes in Plasmas

Atoms, 2014
Line-shape analysis is one of the most important tools for diagnostics of both laboratory and space plasmas. Its reliable implementation requires sufficiently accurate calculations, which imply the use of analytic methods and computer codes of varying ...
Evgeny Stambulchik, Annette Calisti, Hyun-Kyung Chung, Manuel Á. González   +3 more
doaj   +1 more source

Deep, Broadband Spectral Line Surveys of Molecule-rich Interstellar Clouds

, 2017
Spectral line surveys are an indispensable tool for exploring the physical and chemical evolution of astrophysical environments due to the vast amount of data that can be obtained in a relatively short amount of time.
S. W. Widicus Weaver, J. Laas, L. Zou, J. Kroll, M. Rad, B. Hays, J. L. Sanders, D. Lis, T. Cross, N. Wehres, B. McGuire, M. Sumner   +11 more
semanticscholar   +1 more source

Long-Term X-ray Spectral Variability in Seyfert 1 Galaxies

, 2003
Direct time-resolved spectral fitting has been performed on continuous RXTE monitoring of seven Seyfert 1 galaxies in order to study their broadband spectral variability and Fe K alpha variability characteristics on time scales of days to years ...
A. Markowitz, Fabian A. C., George I. M., Guilbert P., Iwasawa K., Magdziarz P., Matt G., Nandra K., R. Edelson, Reynolds C. S., S. Vaughan, Swank J.   +11 more
core   +1 more source

F, G, K, M Spectral Standards in the Y Band (0.95-1.11 um) [PDF]

, 2010
We take advantage of good atmospheric transparency and the availability of high quality instrumentation in the 1 um near-infrared atmospheric window to present a grid of F, G, K, and M spectral standards observed at high spectral resolution (R ~ 25,000).
Chelsea Sharon, Cushing, Cushing, Edwards, Fischer, Griffin, Houk, Kurucz, Lynne Hillenbrand, McLean, Meyer, Morgan, Sharpless, Suzan Edwards, van Hoof, Wallace, Wallace, William Fischer   +17 more
core   +2 more sources