Now showing items 1-8 of 8

    • Detection of period variations in extrasolar transiting planet OGLE-TR-111b 

      Díaz, Rodrigo; Rojo, Patricio; Melita, Mario; Hoyer, Sergio; Minniti, Dante; Mauas, Pablo J. D.; Ruiz González, María Teresa (UNIV CHICAGO PRESS, 2008-07-20)
      Two consecutive transits of planetary companion OGLE-TR-111b were observed in the I band. Combining these observations with data from the literature, we find that the timing of the transits cannot be explained by a constant ...
    • DISCOVERY AND CHARACTERIZATION OF AN EXTREMELY DEEP-ECLIPSING CATACLYSMIC VARIABLE: LSQ172554.8-643839 

      Rabinowitz, David; Tourtellotte, Suzanne; Rojo, Patricio; Hoyer, Sergio; Folatelli, Gastón; Coppi, Paolo; Baltay, Charles; Bailyn, Charles (IOP PUBLISHING LTD, 2011-05-01)
      We report the discovery of an eclipsing cataclysmic variable with eclipse depths > 5.7 mag, orbital period 94.657 minutes, and peak brightness V similar to 18 at J2000 position 17(h)25(m)54(s). 8, -64 degrees 38'39 ''. ...
    • FIVE NEW TRANSIT EPOCHS OF THE EXOPLANET OGLE-TR-111b 

      Hoyer, Sergio; Rojo, P.; López Morales, M.; Díaz, R. F.; Chambers, J.; Minniti, D. (IOP PUBLISHING, 2011-05-20)
      We report five new transit epochs of the extrasolar planet OGLE-TR-111b, observed in the v-HIGH and Bessell I bands with the FORS1 and FORS2 at the ESO Very Large Telescope between 2008 April and May. The new transits have ...
    • An infrared study of the double nucleus in NGC 3256 

      Lira Teillery, Paulina; González Corvalán, V.; Ward, M.; Hoyer, Sergio (BLACKWELL, 2008-02-11)
      We present new resolved near- and mid-infrared (mid-IR) imaging and N-band spectroscopy of the two nuclei in the merger system NGC 3256, the most IR luminous galaxy in the nearby Universe. The results from the spectral ...
    • NEARBY SUPERNOVA FACTORY OBSERVATIONS OF SN 2007IF: FIRST TOTAL MASS MEASUREMENT OF A SUPER-CHANDRASEKHAR-MASS PROGENITOR 

      Scalzo, R. A.; Aldering, G.; Antilogus, P.; Aragón, C.; Bailey, S.; Baltay, C.; Bongard, S.; Buton, C.; Childress, M.; Chotard, N.; Copin, Y.; Fakhouri, H. K.; Gal Yam, Avishay; Gangler, E.; Hoyer, Sergio; Kasliwal, M.; Loken, S.; Nugent, P.; Pain, R.; Pécontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, David; Rau, A.; Rigaudier, G.; Runge, K.; Smadja, G.; Tao, C.; Thomas, R. C.; Weaver, B.; Wu, C. (2010-03)
      We present photometric and spectroscopic observations of SN 2007if, an overluminous (MV = -20.4), red (B -V = 0.16 at B-band maximum), slow-rising (trise = 24 days) type Ia supernova (SN Ia) in a very faint (Mg = -14.10) ...
    • OGLE-TR-211 - a new transiting inflated hot Jupiter from the OGLE survey and ESO LP666 spectroscopic follow-up program 

      Udalski, A.; Pont, F.; Naef, D.; Melo, C.; Bouchy, F.; Santos, N. C.; Moutou, C.; Díaz, R. F.; Gieren, W.; Gillón, M.; Hoyer, Sergio; Mayor, M.; Mazeh, T.; Minniti, D.; Pietrzyński, G.; Queloz, D.; Ramírez, S.; Ruiz González, María Teresa; Tamuz, O.; Udry, S.; Zoccali, Manuela; Kubiak, M.; Szymański, M. K.; Soszyński, I.; Szewczyk, O.; Ulaczyk, K.; Wyrzykowski, Ł. (EDP SCIENCES S A, 2008-04)
      We present results of the photometric campaign for planetary and low-luminosity object transits conducted by the OGLE survey in 2005 season (Campaign #5). About twenty most promising candidates discovered in these data ...
    • TRANSIT MONITORING IN THE SOUTH (TraMoS) PROJECT: DISCARDING TRANSIT TIMING VARIATIONS IN WASP-5b 

      Hoyer, Sergio; Rojo, Patricio; López Morales, M. (IOP PUBLISHING LTD, 2012-03-20)
      We report nine new transit epochs of the extrasolar planet WASP- 5b, observed in the Bessell I band with the Southern Astrophysical Research Telescope at the Cerro Pachon Observatory and with the SMARTS 1 m Telescope at ...
    • A transiting planet among 23 new near-threshold candidates from the OGLE survey⋆ — OGLE-TR-182 

      Pont, F.; Tamuz, O.; Udalski, A.; Mazeh, T.; Bouchy, F.; Melo, C.; Naef, D.; Moutou, C.; Díaz, R.; Gieren, W.; Gillón, M.; Hoyer, Sergio; Kubiak, M.; Mayor, M.; Minniti, D.; Pietrzynski, G.; Queloz, D.; Ramírez, S.; Ruiz González, María Teresa; Santos, N. C.; Soszynski, I.; Szewczyk, O.; Szymanski, M. K.; Udry, S.; Ulaczyk, K.; Wyrzykowski, Ł.; Zoccali, Manuela (Springer Verlag, 2008)
      By re-processing the data of the second season of the OGLE survey for planetary transits and adding new mesurements on the same fields gathered in subsequent years with the OGLE telescope, we have identified 23 new transit ...