Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey von Wood-Vasey, W. M, Miknaitis, G, Stubbs, C. W, Jha, S, Riess, A. G, Garnavich, P. M, Kirshner, R. P, Aguilera, C, Becker, A. C, Blackman, J. W, Blondin, S, Challis, P, Clocchiatti, A, Conley, A, Covarrubias, R, Davis, T. M, Filippenko, A. V, Foley, R. J, Garg, A, Hicken, M, Krisciunas, K, Leibundgut, B, Li, W, Matheson, T, Miceli, A, Narayan, G, Pignata, G, Prieto, J. L, Rest, A, Salvo, M. E, Schmidt, B. P, Smith, R. C, Sollerman, J, Spyromilio, J, Tonry, J. L, Suntzeff, N. B, Zenteno, A

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Is There Evidence for a Hubble Bubble? The Nature of SN Ia Colors And Dust in External Galaxies von Conley, A., Carlberg, R.G., /Toronto U., Astron. Dept, Guy, J., /Paris U., VI-VII, Howell, D.A., Jha, S., /KIPAC, Menlo Park, Riess, A.G., /Baltimore, Space Telescope Sci. /Johns Hopkins U., Sullivan, M.

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SDSS J102111.02+491330.4: A Newly discovered gravitationally lensed quasar von Pindor, Bart, Eisenstein, Daniel J, Gregg, Michael D, Becker, Robert H, Inada, Naohisa, Oguri, Masamune, Hall, Patrick B, Johnston, David E, Richards, Gordon T, Schneider, Donald P, Turner, Edwin L, Brasi, Guido, Hinz, Philip M, Kenworthy, Matthew A, Miller, Doug, Barentine, J C, Brewington, Howard J, Brinkmann, J, Harvanek, Michael, Kleinman, S J, Krzesinski, Jurek, /Toronto U., Astron. Dept. /Arizona U., Astron. Dept. - Steward Observ. /UC, Davis /LLNL, Livermore /Tokyo U., Inst. Astron. /Tokyo U./Princeton U. Observ. /York U., Canada /Penn State U., Astron. Astrophys. /Apache Point Observ. /Mt. Suhora Observ., Cracow /Fermilab /Chicago U., Astron. Astrophys. Ctr

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