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70921. http://www.eso.org/~bleibund/papers/Sydney.ps
... From a first sample of distant supernovae strong indications of a non vanishing cosmological constant \Lambda emerge. ... Samples of nearby SNe Ia display a very narrow scatter around the expected linear expansion of the local universe (Kowal 1968, Tammann& Leibundgut 1990) and can be further improved by application of distance independent corrections like for light curve shape (Hamuy et al. 1996a, Riess et al. 1996). ... 1998). ... 1995, 1997, 1998; Leibundgut et al. ... 1998, Riess et al. ...
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Ссылки http://www.eso.org/~bleibund/papers/Sydney.ps -- 101.9 Кб -- 07.01.2001
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70922. http://www.eso.org/~bleibund/papers/VLT1.ps
Supernovae and the VLT: More Light to Examine ? ... 1994). ... 1993, Woosley et al. 1994) and most SNe Ib/c (Vacca & Leibundgut 1994, Leibundgut 1994a). ... 1991, Herant & Supernovae and the VLT: More Light to Examine 3 Woosley 1994). ... 15, 221 Branch, D., Tammann, G. A. 1991 , ARA A, 30, 359 Chevalier, R. A., Fransson, C. 1994 , ApJ , 420, 268 Chugai, N. N. 1991 , SovAL, 17, 210 Cropper, M., Bailey, J., McCowage, J., Cannon, R. D., Couch, W. J., Walsh, J. R., Strade, J. O., Freemann ...
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Ссылки http://www.eso.org/~bleibund/papers/VLT1.ps -- 128.0 Кб -- 07.01.2001
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70923. http://www.eso.org/~bleibund/papers/VLTIII.ps
Supernovae at high redshift ? ... Distant supernovae provide a convenient tool for cosmology. ... 1996, Saha et al. 1999), although deviations from the linear expansion within a recession velocity of about 7000 to 10000 km/s have been claimed (Zehavi et al. 1998, Tammann 1999). ... 4 Distant corecollapse supernovae as cosmological probes After the successful observations of distant SNe Ia it can be expected that other supernova types may provide important cosmological information as well. ...
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Ссылки http://www.eso.org/~bleibund/papers/VLTIII.ps -- 202.9 Кб -- 07.01.2001
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70924. http://www.eso.org/~bleibund/papers/Paris.ps
... We confirm the detection of emission within the Damped Lyman Alpha (DLA) absorption line of Q2059360. ... The emission feature itself is resolved in velocity, probably consisting of two components separated by ё 300 km s \Gamma1 . ... Thus the observed redshifts allow interpretation of the emission feature(s) as emission line filaments of the quasar itself. (iv) The mean velocity offset of the emission features with respect to the DLA absorption is +490 km s \Gamma1 . ...
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Ссылки http://www.eso.org/~bleibund/papers/Paris.ps -- 133.3 Кб -- 07.01.2001
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70925. http://www.eso.org/~bleibund/papers/Ringberg.ps
... 1994). ... 1993). ... 1992, Fesen & Matonick 1994, Leibundgut 1994). ... 1995, 1996, Schmidt et al. ... 1996 , Thermonuclear Supernovae , eds. R. Canal, P. RuizLapuente, J. Isern, (Dordrecht: Kluwer), in press Phillips, M. M. 1993 , ApJ , 413, L105 Richmomd, M. W., Treffers, R. R., Filippenko, A. V., Van Dyk, S. D., Paik, Y., Peng, C. 1995 , AJ, 109, 2121 Sandage, A., Saha, A., Tammann, G. A., Labhardt, L., Panagia, N., Macchetto, F. D. 1996 , ApJ , 460, L15 Schmidt, B. P., et al ...
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Ссылки http://www.eso.org/~bleibund/papers/Ringberg.ps -- 60.4 Кб -- 07.01.2001
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70926. http://www.eso.org/~bleibund/papers/RingbergII.ps
Measuring\Omega and \Lambda with Type Ia Supernovae J.C. Niemeyer MaxPlanckInstitut fЁur Astrophysik KarlSchwarzschildStrasse 1, D85748 Garching, Germany B. Leibundgut European Southern Observatory KarlSchwarzschildStrasse 2, D85748 Garching, Germany The explosive carbon incineration of white dwarfs produces very luminous events with no hydrogen in their spectra Type Ia supernovae (SNe Ia). ... Their determination of\Omega and \Lambda is based on the analysis of 7 supernovae at redshifts z ? ...
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Ссылки http://www.eso.org/~bleibund/papers/RingbergII.ps -- 30.5 Кб -- 07.01.2001
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70927. http://www.eso.org/~bleibund/papers/RingbergIII.ps
Supernova Rates 1 Bruno Leibundgut European Southern Observatory KarlSchwarzschildStrasse 2 D85748 Garching Germany Apart from stellar winds supernovae are the only mechanism which releases chemically processed material from stars into the interstellar and intergalactic gas. ... Recent reviews of supernova rates has been published by van den Bergh & Tammann (1991), Tammann (1994), and Strom (1994). ... Corecollapse supernovae (Types II and Ib/c) have not been observed in elliptical galaxies. ...
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Ссылки http://www.eso.org/~bleibund/papers/RingbergIII.ps -- 55.7 Кб -- 07.01.2001
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70928. http://www.eso.org/~bleibund/papers/RingbergIV.ps
Bolometric Light Curves of Type Ia Supernovae G. Contardo 1;2 , B. Leibundgut 1 1 European Southern Observatory, KarlSchwarzschildStraъe 2, D85748 Garching, Germany 2 MaxPlanckInstitut fЁur Astrophysik, KarlSchwarzschildStraъe 1, D85748 Garch ing, Germany 1.1 Light Curves of Type Ia Supernovae Substantial information about the processes in supernovae is contained in their light curves. ... But the light curves of SNe Ia show significant differences in their shapes and maximum luminosities. ...
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Ссылки http://www.eso.org/~bleibund/papers/RingbergIV.ps -- 146.2 Кб -- 07.01.2001
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70929. http://www.eso.org/~bleibund/papers/Rome.ps
The Complex Line of Sight Towards Q2059\Gamma360 1 B. Leibundgut European Southern Observatory, KarlSchwarzschildStrasse 2, D85748 Garching, Germany J. Gordon Robertson School of Physics, University of Sydney, NSW 2006, Australia Abstract. ... Three objects with similar redshift have to be con sidered along the line of sight: the absorption system, a spatially ex tended emission, and the quasar itself. ... 1997). ... 1996, MЬller, Warren, & Fynbo 1998, Leibundgut & Robertson 1998). ... 1998). ...
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Ссылки http://www.eso.org/~bleibund/papers/Rome.ps -- 111.2 Кб -- 07.01.2001
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70930. http://www.eso.org/~bleibund/papers/Strasbourg.ps
Type Ia Supernovae as Distance Indicators 1 Bruno Leibundgut European Southern Observatory KarlSchwarzschildStrasse 2 D85748 Garching Germany bleibundgut@eso.org 1 Introduction Type Ia Supernovae (SNe Ia) have become the principal distance indicator for the deter mination of distances in the Hubble flow and, in connection with their calibration through Cepheids, the Hubble constant (Hamuy et al. 1996, Riess et al. ... 1997). ... 1995, 1997, Schmidt et al. ... 1995, 1997, Leibundgut et al. ...
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Ссылки http://www.eso.org/~bleibund/papers/Strasbourg.ps -- 57.7 Кб -- 07.01.2001
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70931. http://www.eso.org/~bleibund/papers/IAUSymp165.ps
... 1994). ... 1990, Woosley et al. 1993, 1994b, Wheeler et al. ... 1993, 1994). ... 1994 , MNRAS, 266, L27 Muller, R. A., Marvin Newberg, H. J., Pennypacker, C. R., Perlmutter, S., Sasseen, T. P., Smith, C. K. 1992, ApJ, 384, L9 Nomoto, K., Filippenko , A. V., Shigeyama, T. 1990, A A, 240, L1 Nomoto, K., Suzuki, T., Shigeyama, T., Kumagai, S., Yamaoka, H. Saio, H 1993 , Nature, 364, 507 Nomoto, K., Yamaoka, H., Pols, O. R., van den Heuvel, E. P. J., Iawamoto, K., Kumagai, S., Shigeyama, T ...
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Ссылки http://www.eso.org/~bleibund/papers/IAUSymp165.ps -- 178.1 Кб -- 07.01.2001
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70932. http://www.eso.org/~bleibund/papers/Landskrona.ps
... Together with improved observatory operations the new observing modes can provide significant progress in the acquisition of astronomical data. ... The VLT data flow project is designed to accommodate these new observing modes together with conventional observing. ... INFORMATION EXCHANGE IN A COMPLEX OBSERVATORY THE VLT DATA FLOW Removing the astronomers from the actual observations at the telescope implies that other means must be provided to retain their control over the observational process. ...
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Ссылки http://www.eso.org/~bleibund/papers/Landskrona.ps -- 84.1 Кб -- 07.01.2001
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70933. http://www.eso.org/~bleibund/papers/Moriond.ps
... It is found that the distant supernovae appear dimmer than expected in an empty universe indicating contributions by the vacuum energy density. ... The light curve shape corrections, however, are purely empirical and have changed considerably since their first application. ... 3 \Omega M and\Omega \Lambda from SNe Ia The determination of the cosmological energy density rests on the measurement of objects distant enough so that the curvature of the universe becomes significant. ...
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Ссылки http://www.eso.org/~bleibund/papers/Moriond.ps -- 92.1 Кб -- 07.01.2001
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70934. http://www.eso.org/~bleibund/papers/NMO95.ps
... The minimal information exchange between the astronomers, who are not present while their observations are obtained at the telescope, and the observer performing said observations is laid out and detailed. ... At ESO a dedicated group of astronomers has drafted a proposal for the implementation of service observing as it was outlined in the science operations plan for the VLT (Baade 1995, see also Baade these proceedings). ... An important feature of observation blocks is their modularity. ...
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Ссылки http://www.eso.org/~bleibund/papers/NMO95.ps -- 57.9 Кб -- 07.01.2001
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70935. http://www.eso.org/~bleibund/papers/Heidelberg.ps
The HighRedshift Supernova Search -- Evidence for a Positive Cosmological Constant 1 Bruno Leibundgut, Gertrud Contardo, Patrick Woudt and Jason Spyromilio 2 European Southern Observatory, KarlSchwarzschildStrasse 2, D85748 Garching, Germany Abstract A new component of the Universe which leads to an accelerated cosmic ex pansion is found from the measurements of distances to highredshift type Ia supernovae. ... 1998, Garnavich et al. 1998a, Riess et al. 1998, Perlmutter et al. ... 1998). ...
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Ссылки http://www.eso.org/~bleibund/papers/Heidelberg.ps -- 244.5 Кб -- 07.01.2001
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70936. http://www.eso.org/~bleibund/papers/Barcelona.ps
MODELING THE LIGHTCURVES OF TYPE Ia SUPERNOVAE 1 W. D. VACCA Institute for Astronomy 2680 Woodlawn Dr., Honolulu, HI 96822, USA AND B. LEIBUNDGUT ESO KarlSchwarzschildStrasse 2, D85748 Garching, Germany Abstract. ... Leibundgut (1988) computed average magnitudes, as a function of time past maximum light, from the photometric data for the best observed SN I events and constructed general ``template'' lightcurves for Type Ia and Ib supernovae in several filter bands. ... 1995, Vaughan et al. ...
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Ссылки http://www.eso.org/~bleibund/papers/Barcelona.ps -- 1301.8 Кб -- 07.01.2001
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70937. http://www.eso.org/~bleibund/papers/Basel.ps
... Our discussion of system atic uncertainties emphasizes the dependence on the zeropoint defined by the nearby SNe Ia sample and the influence of the application of light curve corrections to the luminosity. ... The magnituderedshift relation of Type Ia Supernovae (SNe Ia) has always displayed a rather small scatter (Kowal 1968, Tammann & Leibundgut 1990) and almost all SNe Ia exhibit very similar B, V , and I light curves (Leibundgut et al. ... 1996). ... 1997). ... 1993, 1995, 1996, 1997). ...
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Ссылки http://www.eso.org/~bleibund/papers/Basel.ps -- 194.7 Кб -- 07.01.2001
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70938. http://www.eso.org/~bleibund/papers/Berlin.ps
... Mit Ausnahme der Phasen des Mondes und seiner Wanderung tut sich offensichtlich nichts. ... Erst kЭrzlich zeichnete sich ein Ausweg aus dem Dilemma ab. ... Da die Raumzeit vermutlich nicht gekrЭmmt ist und die Gesamtenergie des Universums sich zu 30 Prozent in seiner Materie - der sichtbaren wie der dunklen - und zu 70 Prozent in der Kosmologischen Konstanten manifestiert, ergibt sich ein Alter von 13 oder 14 Milliarden Jahren, komfortable genug fЭr die Дltesten Sterne mit 11 Milliarden Jahren. ...
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Ссылки http://www.eso.org/~bleibund/papers/Berlin.ps -- 204.0 Кб -- 07.01.2001
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70939. http://www.eso.org/~bleibund/papers/ASI450.ps
... Finally, supernovae have been employed as light beacons for cosmological distance measurements. ... Thesis, University of Basel Leibundgut , B. 1991, Supernovae , ed. S. E. Woosley, (New York: Springer), 751 Leibundgut , B. 1994a, IAU Colloquium 145: Supernovae and Supernova Remnants, ed. McCray, (Cambridge: Cambridge University Press), in press Leibundgut , B. 1994b, Circumstellar Media in Lates Stages of Stellar Evolution, eds. R. Clegg, P. Meikle, I. Stevens, (Cambridge: Cambridge ...
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Ссылки http://www.eso.org/~bleibund/papers/ASI450.ps -- 671.2 Кб -- 07.01.2001
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70940. http://www.eso.org/projects/dfs/to-do-list/template-to-do-close.txt
LIST OF CLOSED ACTION ITEMS * ================================ Last update: 30-Nov-00 16:34 --------------------------------------------------------- ... Description ---------------------------------------------------------------------------------------------- 0003 PHRS GroupMeet01/01 ACTION LOW 01/02/ 2001 XX Done Here is the third action item of this To-Do list : it's an ACTION originated by The DFS Group meeting of 01/01, to be ...
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Ссылки http://www.eso.org/projects/dfs/to-do-list/template-to-do-close.txt -- 2.2 Кб -- 06.12.2000
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