Browsing by Author "cb54d9ba-ff39-4aa6-bbe8-469be7a9c41c"

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    • Compatibility of the large quasar groups with the concordance cosmological model 
      Marinello, Gabriel E.; Clowes, Roger G.; Campusano Brown, Luis; Williger, Gerard M.; Sochting, Ilona K.; Graham, Matthew J. (2016)
      We study the compatibility of large quasar groups with the concordance cosmological model. Large quasar groups are very large spatial associations of quasars in the cosmic web, with sizes of 50-250 h(-1) Mpc. In particular, ...
    • Optical light curves of the type Ia supernovae SN 1990N and SN 1991T 
      Lira Teillery, Paulina; Suntzeff, Nicholas B.; Phillips, M. M.; Hamuy Wackenhut, Mario; Maza Sancho, José; Schommer, R. A.; Smith, R. C.; Wells, Lisa A.; Avilés, R.; Baldwin, J. A.; Elias, J. H.; González, L.; Layden, A. C.; Navarrete, M.; Ugarte, P.; Walker, Alistair R.; Williger, Gerard M.; Baganoff, F. K.; Crotts, Arlin P. S.; Rich, R. Michael; Tyson, N. D.; Dey, A.; Guhathakurta, P.; Hibbard, J.; Kim, Y. C.; Rehner, Daniel M.; Siciliano, E.; Roth, Joshua; Seitzer, Patrick; Williams, T. B. (UNIV CHICAGO PRESS., 1998-01)
      We present UBV RI light curves for the bright Type Ia supernovae SN 1990N in NGC 4639 and SN 1991T in NGC 4527, based on photometry gathered in the course of the Cala n/Tololo supernova program. Both objects have ...
    • Ultraviolet Fe ii emission in fainter quasars: luminosity dependences, and the influence of environments 
      Clowes, Roger G.; Haberzettl, Lutz; Raghunathan, Srinivasan; Williger, Gerard M.; Mitchell, Sophia M.; Sochting, Ilona K.; Graham, Matthew J.; Campusano Brown, Luis (Oxford Univ. Press, 2016)
      We investigate the strength of ultraviolet Fe ii emission in fainter quasars compared with brighter quasars for 1.0 a parts per thousand currency sign z a parts per thousand currency sign 1.8, using the Sloan Digital Sky ...