Browsing by Author "Lira Teillery, Paulina"

Now showing items 21-40 of 68

    • Correlation and time delays of the X-ray and optical emission of the Seyfert Galaxy NGC 3783 
      Arévalo, P.; Uttley, P.; Lira Teillery, Paulina; Breedt, E.; McHardy, I. M.; Churazov, E. (WILEY-BLACKWELL, 2009-08-21)
      We present simultaneous X-ray and optical B- and V-band light curves of the Seyfert Galaxy NGC 3783 spanning 2 years. The flux in all bands is highly variable and the fluctuations are significantly correlated. As shown ...
    • Deep learning para identificación de núcleos activos de galaxias por variabilidad 
      Miranda Castillo, Nicolás Martín (Universidad de Chile, 2018)
      En la presente era de datos masivos, la astronomía requiere de herramientas automatizadas para el análisis de información asociada al comportamiento de objetos a lo largo del tiempo. El desarrollo de proyectos de observación ...
    • Detection of rest-frame optical lines from x-shooter spectroscopy of weak emission-line quasars 
      Plotkin, Richard; Shemmer, Ohad; Trakhtenbrot, Benny; Anderson, Scott; Brandt, W.; Fan, Xiaohui; Gallo, Elena; Lira Teillery, Paulina; Luo, Bin; Richards, Gordon; Schneider, Donald; Strauss, Michael; Wu, Jianfeng (The American Astronomical Society, 2015-06-01)
      Over the past 15 yr, examples of exotic radio-quiet quasars with intrinsically weak or absent broad emission line regions (BELRs) have emerged from large-scale spectroscopic sky surveys. Here, we present spectroscopy ...
    • Differences between CO- and calcium triplet-derived velocity dispersions in spiral galaxies: evidence for ... 
      Riffel, Rogemar A.; Ho, Luis; Mason, Rachel; Rodríguez Ardila, Alberto; Martins, Lucimara; Riffel, Rogerio; Diaz, Ruben; Colina, Luis; Alonso-Herrero, Almudena; Flohic, Helene; González, Omaira; Lira Teillery, Paulina; McDermid, Richard; Ramos Almeida, Cristina; Schiavon, Ricardo; Thanjavur, Karun; Ruschel-Dutra, Daniel; Winge, Claudia; Perlman, Eric (Royal Astronomical Society, 2015)
      We examine the stellar velocity dispersions (σ) of a sample of 48 galaxies, 35 of which are spirals, from the Palomar nearby galaxy survey. It is known that for ultra-luminous infrared galaxies (ULIRGs) and merger remnants, ...
    • ERRATUM: ““ OPTICAL LIGHT CURVES OF THE TYPE Ia SUPERNOVAE SN 1990N AND SN 1991T ÏÏ [ASTRON. J. 115, 234 (1998)] 
      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, 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. (The American Astronomical Society, 1998-08)
    • Exploratory X-ray monitoring of luminous radio-quiet quasars at high redshift: initial results 
      Shemmer, Ohad; Brandt, W. N.; Paolillo, Maurizio; Kaspi, Shai; Vignali, Cristian; Stein, Matthew S.; Lira Teillery, Paulina; Schneider, Donald P.; Gibson, Robert R. (The American Astronomical Society, 2014)
      We present initial results from an exploratory X-ray monitoring project of two groups of comparably luminous radio-quiet quasars (RQQs). The first consists of four sources at 4.10 z 4.35, monitored by Chandra, and ...
    • Exploratory x-ray monitoring of luminous radio-quiet quasars at high redshift: initial results 
      Shemmer, Ohad; Brandt, W. N.; Paolillo, Maurizio; Kaspi, Shai; Vignali, Cristian; Stein, Matthew S.; Lira Teillery, Paulina; Schneider, Donald P.; Gibson, Robert R. (The Astrophysical Journal, 2014-03-10)
      We present initial results from an exploratory X-ray monitoring project of two groups of comparably luminous radio-quiet quasars (RQQs). The first consists of four sources at 4.10 z 4.35, monitored by Chandra, and ...
    • Extreme star formation in the host galaxies of the fastest growing supermassive black holes AT z = 4.8 
      Mor, Rivay; Netzer, Hagai; Trakhtenbrot, Benny; Shemmer, Ohad; Lira Teillery, Paulina (2012-04-20)
      We report new Herschel observations of 25 z 4.8 extremely luminous optically selected active galactic nuclei (AGNs). Five of the sources have extremely large star-forming (SF) luminosities, LSF, corresponding to SF ...
    • THE FUNDAMENTAL PLANE EVOLUTION OF ACTIVE GALACTIC NUCLEUS HOST GALAXIES 
      Woo, Jong-Hak; Urry, C. Megan; Lira Teillery, Paulina; van der Marel, Roeland P.; Maza Sancho, José (2004-12-20)
      We measured the stellar velocity dispersions of 15 active galactic nucleus (AGN) host galaxies at redshifts as high as 0.34. Combining these with published velocity dispersion measurements from the literature, we study the ...
    • Galaxy clusters in the line of sight to background quasars – II. Environmental effects on the sizes of ... 
      Padilla, Nelson; Lacerna, Iván; López Morales, Sebastián; Barrientos, L. Felipe; Lira Teillery, Paulina; Andrews, Heather; Tejos, Nicolás (2009)
      Based on recent results on the frequency of Mg II absorption-line systems in the spectra of QSO behind RCS clusters (QbC), we analyse the effects of the cluster environment on the sizes of baryonic haloes around galaxies. ...
    • Galaxy clusters in the line of sight to background quasars. I. Survey design and incidence of MgII absorbers ... 
      López, S.; Barrientos, L. Felipe; Lira Teillery, Paulina; Padilla, N.; Gilbank, D. G.; Gladders, M. D.; Maza Sancho, José; Tejos, Nicolás; Vidal, M.; Yee, H. K. C. (UNIV CHICAGO PRESS, 2008-06-01)
      We describe the first optical survey of absorption systems associated with cluster galaxies at z = 0.3-0.9. We have cross-correlated quasars from the third data release of the SDSS with high-redshift cluster/group candidates ...
    • GALAXY CLUSTERS IN THE LINE OF SIGHT TO BACKGROUND QUASARS. III. MULTI-OBJECT SPECTROSCOPY∗ 
      Andrews, H.; Barrientos, L. Felipe; López Morales, Sebastián; Lira Teillery, Paulina; Padilla, N.; Gilbank, D. G.; Lacerna, Iván; Maureira, M. J.; Ellingson, E.; Gladders, M. D.; Yee, H. K. C. (The American Astronomical Society. All rights reserved. Printed in the U.S.A., 2013-09-01)
      We present Gemini/GMOS-S multi-object spectroscopy of 31 galaxy cluster candidates at redshifts between 0.2 and 1.0 and centered on QSO sight lines taken from L´opez et al. The targets were selected based on the presence of ...
    • How lyman alpha emission depends on galaxy stellar mass 
      Oyarzún, Grecco A.; Blanc Mendiberri, Guillermo; González, Valentino; Mateo, Mario; Bailey III, John I.; Finkelstein, Steven L.; Lira Teillery, Paulina; Crane, Jeffrey D.; Olszewski, Edward W. (The American Astronomical Society, 2016)
      In this work, we show how the stellar mass (M-*) of galaxies affects the 3 < z < 4.6 Ly alpha equivalent width (EW) distribution. To this end, we design a sample of 629 galaxies in the M-* range 7.6 < logM(*)/M-circle dot ...
    • Independent evidence for the cosmic acceleration from Type II Supernovae 
      De Jaeger, Thomas (Universidad de Chile, 2016)
      El trabajo de tesis se titula Evidencia independiente de acceleración cósmica a partir de supernovas de tipo II ; y tiene como objetivo estudiar la utilidad de las supernovas de tipo II como indicadores de distancias ...
    • 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 ...
    • Major mergers at z ~ 4.8 
      Nguyen, Nathen Huy (Universidad de Chile, 2020)
      En esta tesis presentaré un estudio extendido de cuásares a alto redshift, que han sido ob- servados con el Atacama Large Millimeter Array (ALMA). Buscamos compañeros cercanos a nuestros cuásares en [C ii] λ157.74 μm y ...
    • Mid-infrared properties and color selection for X-ray-detected active galactic nuclei in the MUSYC extended ... 
      Cardamone, Carolin N.; Urry, C. Megan; Damen, Maaike; van Dokkum, Pieter; Treister, Ezequiel; Labbé, Ivo; Virani, Shanil N.; Lira Teillery, Paulina; Gawiser, Eric (UNIV CHICAGO PRESS, 2008-06-10)
      We present the mid-infrared colors of X-ray-detected AGNs and explore mid-infrared selection criteria. Using a statistical matching technique, the likelihood ratio, over 900 IRAC counterparts were identified with a new ...
    • MODELING THE NUCLEAR INFRARED SPECTRAL ENERGY DISTRIBUTION OF TYPE II ACTIVE GALACTIC NUCLEI 
      Lira Teillery, Paulina; Videla, Liza; Wu, Yanling; Alonso-Herrero, Almudena; Alexander, David M.; Ward, Martin (2013-02-20)
      We present results from model fitting to the spectral energy distribution (SED) of a homogeneous sample of Seyfert II galaxies drawn from the 12μm Galaxy Sample. Imaging and nuclear flux measurements are presented in an ...
    • Monitoreo Óptico de Causares Luminosos de Alto Redshift 
      Botti Rojas, Ismael Andrés (Universidad de Chile, 2011)
      Este trabajo se enmarca en una campaña de monitoreo óptico de una muestra de 56 cuasares (QSO) de alta luminosidad ( L(1350A) > 1046.5 erg s-1) y de alto redshift (z > 2), el cual se lleva a cabo usando imágenes directas ...
    • The morphology of type Ia supernovae light curves 
      Hamuy Wackenhut, Mario; Phillips, M. M.; Suntzeff, Nicholas B.; Schommer, Robert A.; Maza Sancho, José; Smith, R. C.; Lira Teillery, Paulina; Avilés, R. (1996-12)
      We present a family of six BVI template light curves for SNe Ia for days -5 and +80, based on high-quality data gathered at CTIO. These templates display a wide range of light-curve morphologies, with initial decline rates ...