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pro vyhledávání: '"Bechtold, J"'
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Autor:
Bechtold, J., Shectman, S. A.
Publikováno v:
Steward Observatory Parker Library SO QB 4 .S752 ARCH
We have observed two high -redshift quasars with the echelle spectrograph and 2D- Frutti Photon Counter at Las Campanas, in order to investigate the statistical properties of the Lyman -a forest. The two-point correlation function for the Lyman -a fo
Externí odkaz:
http://hdl.handle.net/10150/623892
http://arizona.openrepository.com/arizona/handle/10150/623892
http://arizona.openrepository.com/arizona/handle/10150/623892
Autor:
Rozanska, A., Nikolajuk, M., Czerny, B., Dobrzycki, A., Hryniewicz, K., Bechtold, J., Ebeling, H.
We present photoionisation modelling of the intrinsic absorber in the bright quasar HS 1603+3820. We construct spectral energy distribution using optical/UV/X-ray observations as an input to photoionisation calculations. Spectra from Keck telescope s
Externí odkaz:
http://arxiv.org/abs/1303.5004
Autor:
Belokurov, V., Walker, M. G., Evans, N. W., Gilmore, G., Irwin, M. J., Mateo, M., Mayer, L., Olszewski, E., Bechtold, J., Pickering, T.
Publikováno v:
Mon.Not.Roy.Astron.Soc.397:1748-1755,2009
We announce the discovery of a new Milky Way satellite Segue 2 found in the data of the Sloan Extension for Galactic Understanding and Exploration (SEGUE). We followed this up with deeper imaging and spectroscopy on the Multiple Mirror Telescope. Fro
Externí odkaz:
http://arxiv.org/abs/0903.0818
Autor:
Schwope, A., Erben, T., Kohnert, J., Lamer, G., Steinmetz, M., Strassmeier, K., Zinnecker, H., Bechtold, J., Diolaiti, E., Fontana, A., Gallozzi, S., Giallongo, E., Ragazzoni, R., De Santis, C., Testa, V.
We report optical B-band observations with the Large Binocular Telescope LBT of the isolated neutron star RBS1774. The stacked image with total exposure 2.5h reveals a candidate optical counterpart at mB = 26.96 +- 0.20 at position RA(2000) = 21:43:0
Externí odkaz:
http://arxiv.org/abs/0902.4110
Autor:
Pasquali, A., Leroy, A., Rix, H. -W., Walter, F., Herbst, T., Giallongo, E., Ragazzoni, R., Baruffolo, A., Speziali, R., Hill, J., Beccari, G., Bouche', N., Buschkamp, P., Kochanek, C., Skillman, E., Bechtold, J.
We present deep imaging of the star-forming dwarf galaxy IC2574 in the M81 group taken with the Large Binocular Telescope in order to study in detail the recent star-formation history of this galaxy and to constrain the stellar feedback on its HI gas
Externí odkaz:
http://arxiv.org/abs/0808.0193
Autor:
Prieto, J. L., Kistler, M. D., Thompson, T. A., Yuksel, H., Kochanek, C. S., Stanek, K. Z., Beacom, J. F., Martini, P., Pasquali, A., Bechtold, J.
Publikováno v:
Astrophys.J.681:L9-L12,2008
We report the discovery of the progenitor of the recent type IIn SN 2008S in the nearby galaxy NGC 6946. Surprisingly, it was not found in deep, pre-explosion optical images of its host galaxy taken with the Large Binocular Telescope, but only throug
Externí odkaz:
http://arxiv.org/abs/0803.0324
Autor:
de Jong, J. T. A., Harris, J., Coleman, M. G., Martin, N. F., Bell, E. F., Rix, H-W., Hill, J. M., Skillman, E. D., Sand, D. J., Olszewski, E. W., Zaritsky, D., Thompson, D., Giallongo, E., Ragazzoni, R., DiPaola, A., Farinato, J., Testa, V., Bechtold, J.
Publikováno v:
Astrophysical Journal 680 (2008) 1112-1119
We present deep, wide-field g and r photometry of the transition type dwarf galaxy Leo T, obtained with the blue arm of the Large Binocular Telescope. The data confirm the presence of both very young (<1 Gyr) as well as much older (>5 Gyr) stars. We
Externí odkaz:
http://arxiv.org/abs/0801.4027
Autor:
Dai, X., Garnavich, P. M., Prieto, J. L., Stanek, K. Z., Kochanek, C. S., Bechtold, J., Bouche, N., Buschkamp, P., Diolaiti, E., Fan, X., Giallongo, E., Gredel, R., Hill, J. M., Jiang, L., McClellend, C., Milne, P., Pedichini, F., Pogge, R. W., Ragazzoni, R., Rhoads, J., Smareglia, R., Thompson, D., Wagner, R. M.
Publikováno v:
Astrophys.J.682.L77-L80,2008
Using the 8.4m Large Binocular Telescope, we observed six GRB afterglows from 2.8 hours to 30.8 days after the burst triggers to systematically probe the late time behaviors of afterglows including jet breaks, flares, and supernova bumps. We detected
Externí odkaz:
http://arxiv.org/abs/0712.2239
Publikováno v:
Astron.Astrophys.476:1205-1217,2007
We present the analysis of multi-wavelength observations of bright quasar HS1603+3820: the optical data taken with the MMT and Keck telescopes, and X-ray data obtained with the Chandra X-ray Observatory. The optical spectra contain a very large numbe
Externí odkaz:
http://arxiv.org/abs/0710.0647