Keresés
32539 találatból megjelenítve: 8421-8430
Cím: Angular clustering with photometric redshifts in the Sloan Digital Sky Survey: Bimodality in the clustering properties of galaxies
Szerző: ; ; ; ; ; ; ; ; ; ; Fukugita, M; Gunn, J E; Johnston, D; Kent, S; Loveday, J N; Lupton, R H; Tegmark, M; Thakar, A R; Yanny, B; York, D G; Zehavi, I
Dátum: 2003
Feltöltve: 2020-08-08
(2003)
Understanding the clustering of galaxies has long been a goal of modern observational cosmology. Redshift surveys have been used to measure the correlation length as a function of luminosity and color. However, when ...
Cím: Observing the dark matter density profile of isolated galaxies
Szerző: ; ; ; ; ; ; ; ; ;
Dátum: 2003
Feltöltve: 2020-08-08
(2003)
Using the Sloan Digital Sky Survey (SDSS), we probe the halo mass distribution by studying the velocities of satellites orbiting isolated galaxies. In a subsample that covers 2500 deg(2) on the sky, we detect about 3000 ...
Cím: Toward spectral classification of L and T dwarfs: Infrared and optical spectroscopy and analysis
Szerző: ; ; ; ; ; ; ; ; ; ; Hennessy, G; Henry, T J; Hill, G J; Hindsley, R B; Ivezic, Z; Lupton, R H; Mcdaniel, A; Munn, J A; Narayanan, V K; Peng, E; Pier, J R; Rockosi, C M; Schneider, D P; Smith, J A; Strauss, M A; Tsvetanov, Z I; Uomoto, A; York, D G; Zheng, W
Dátum: 2002
Feltöltve: 2020-08-08
(2002)
We present 0.6-2.5 mum, Rgreater than or similar to400 spectra of 27 cool, low-luminosity stars and substellar objects. Based on these and previously published spectra, we develop a preliminary spectral classification ...
Cím: The XMM-Newton serendipitous survey - II. First results from the AXIS high galactic latitude medium sensitivity survey
Szerző: ; ; ; ; ; ; ; ; ; ; Barret, D; Brunner, H; Ceballos, MT; Della Ceca, R; Guillout, P; Hasinger, G; Maccacaro, T; Mateos, S; Motch, C; Negueruela, I; Osborne, JP; Perez-Fournon, I; Schwope, A; Severgnini, P; Szokoly, GP; Webb, NA; Wheatley, PJ; Worrall, DM
Dátum: 2002
Feltöltve: 2020-08-08
(2002)
We present the first results on the identifications of a medium sensitivity survey (X-ray flux limit 2 x 10(-14) erg cm(-2) s(-1) in the 0.5-4.5 keV band) at high galactic latitude (\b\ > 20degrees) carried out with the ...
Cím: Stellar masses and star formation histories for 10(5) galaxies from the Sloan Digital Sky Survey
Szerző: ; ; ; ; ; ; ; ; ; ; Blanton, M; Brinkmann, J; Castander, F; Csabai, I; Fukugita, M; Ivezic, Z; Munn, J A; Nichol, R C; Padmanabhan, N; Thakar, A R; Weinberg, D H; York, D
Dátum: 2003
Feltöltve: 2020-08-08
(2003)
We develop a new method to constrain the star formation histories, dust attenuation and stellar masses of galaxies. It is based on two stellar absorption-line indices, the 4000-Angstrom break strength and the Balmer ...
Cím: The broadband optical properties of galaxies with redshifts 0.02 z 0.22
Szerző: ; ; ; ; ; ; ; ; ; ; Lamb, D Q; Lupton, R H; Loveday, J; Munn, J A; Nichol, R C; Okamura, S; Schlegel, D J; Shimasaku, K; Strauss, M A; Vogeley, M S; Weinberg, D H
Dátum: 2003
Feltöltve: 2020-08-08
(2003)
Using photometry and spectroscopy of 183,487 galaxies from the Sloan Digital Sky Survey, we present bivariate distributions of pairs of seven galaxy properties: four optical colors, surface brightness, radial profile shape ...
Cím: XMM-Newton observation of the Lockman Hole - II. Spectral analysis
Szerző: ; ; ; ; ; ; ;
Dátum: 2002
Feltöltve: 2020-08-08
(2002)
We present the results of the X-ray spectral analysis of the first deep X-ray survey with the XMM-Newton observatory during Performance Verification. The X-ray data of the Lockman Hole field and the derived cumulative ...
Cím: The application of photometric redshifts to the SDSS early data release
Szerző: ; ; ; ; ; ; ; ; ; ; Gunn, J; Kent, S; Lupton, R; Nichol, R C; Stoughton, C
Dátum: 2003
Feltöltve: 2020-08-08
(2003)
The Early Data Release (EDR) from the Sloan Digital Sky Survey provides one of the largest multicolor photometric catalogs currently available to the astronomical community. In this paper we present the first application ...
Cím: Gamma photometric redshifts for long gamma-ray bursts
Szerző: ; ; ; ; ; ;
Dátum: 2003
Feltöltve: 2020-08-08
(2003)
It is known that the soft tail of the gamma-ray bursts' spectra show excesses from the exact power-law dependence. In this article we show that this departure can be detected in the peak flux ratios of different BATSE ...
Cím: Japanese Applied Linguistics
Szerző: ;
Dátum: 2008
Feltöltve: 2020-08-13
(2008)
Adaptált digitalizált tartalom. A Speciális Hallgatói Ügyeket Támogató Iroda a fogyatékossággal élő hallgatók megsegítése céljából tankönyveket adaptál. A tananyag akadálymentes, adaptált változata az arra jogosult (a ...