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The Global ETD Search service is a free service for researchers
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Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 10 of 112 (0.055 seconds)Spelling suggestions: "subject:"catalogue""
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Multimedia product selector using X.500 directory serviceAl-Soufi, Ali M. A. January 1994 (has links)
No description available.
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A catalogue of optical to X-ray spectral energy distributions of z ≈ 2 quasars observed with Swift – I. First resultsLawther, D., Vestergaard, M., Raimundo, S., Grupe, D. 06 1900 (has links)
We present the Swift optical to X-ray spectral energy distributions (SEDs) of 44 quasars at redshifts z approximate to 2 observed by Swift, part of a larger program to establish and characterize the optical through X-ray SEDs of moderate-redshift quasars. Here, we outline our analysis approach and present preliminary analysis and results for the first third of the full quasar sample. Not all quasars in the sample are detected in X-rays; all of the X-ray-detected objects so far are radio loud. As expected for radio-loud objects, they are X-ray bright relative to radioquiet quasars of comparable optical luminosities, with an average alpha(ox) = 1.39 +/- 0.03 (where alpha(ox) is the power-law slope connecting the monochromatic flux at 2500 angstrom and at 2 keV), and display hard X-ray spectra. We find integrated 3000 angstrom-25 keV accretion luminosities of between 0.7 x 10(46) erg s (1) and 5.2 x 10(47) erg s (1). Based on single-epoch spectroscopic virial black hole mass estimates, we find that these quasars are accreting at substantial Eddington fractions, 0.1 less than or similar to L/L-Edd less than or similar to 1.
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The ASAS-SN Bright Supernova Catalog – II. 2015Holoien, T. W.-S., Brown, J. S., Stanek, K. Z., Kochanek, C. S., Shappee, B. J., Prieto, J. L., Dong, Subo, Brimacombe, J., Bishop, D. W., Basu, U., Beacom, J. F., Bersier, D., Chen, Ping, Danilet, A. B., Falco, E., Godoy-Rivera, D., Goss, N., Pojmanski, G., Simonian, G. V., Skowron, D. M., Thompson, Todd A., Woźniak, P. R., Ávila, C. G., Bock, G., Carballo, J.-L. G., Conseil, E., Contreras, C., Cruz, I., Andújar, J. M. F., Guo, Zhen, Hsiao, E. Y., Kiyota, S., Koff, R. A., Krannich, G., Madore, B. F., Marples, P., Masi, G., Morrell, N., Monard, L. A. G., Munoz-Mateos, J. C., Nicholls, B., Nicolas, J., Wagner, R. M., Wiethoff, W. S. 15 January 2017 (has links)
This manuscript presents information for all supernovae discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN) during 2015, its second full year of operations. The same information is presented for bright (m(V) <= 17), spectroscopically confirmed supernovae discovered by other sources in 2015. As with the first ASAS-SN bright supernova catalogue, we also present redshifts and near-ultraviolet through infrared magnitudes for all supernova host galaxies in both samples. Combined with our previous catalogue, this work comprises a complete catalogue of 455 supernovae from multiple professional and amateur sources, allowing for population studies that were previously impossible. This is the second of a series of yearly papers on bright supernovae and their hosts from the ASAS-SN team.
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UBC Press trade catalogue. Fall winter 2003UBC Press January 2003 (has links)
No description available.
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UBC Press trade catalogue. Fall winter 2005UBC Press January 2005 (has links)
No description available.
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UBC Press trade catalogue. Fall winter 2004UBC Press January 2004 (has links)
No description available.
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UBC Press trade catalogue. Fall winter 2006UBC Press January 2006 (has links)
No description available.
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UBC Press trade catalogue. Fall 2007UBC Press January 2007 (has links)
No description available.
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UBC Press catalogue. Fall winter 2002UBC Press January 2002 (has links)
No description available.
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UBC Press catalogue. Fall winter 2003UBC Press January 2003 (has links)
No description available.
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