Navegação por Assunto "Infrared: stars"

Resultados 1-12 de 12

    • Anchoring the distence scale via x-ray/infrared data for Cepheid clusters : SU Cas 

      Majaess, Daniel J.; Turner, D. G.; Gallo, Luigi; Gieren, Wolfgang P.; Bonatto, Charles Jose; Lane, Dave; Balam, D.; Berdnikov, L. (2012) [Artigo de periódico]
      New X-ray (XMM-Newton) and JHKs (Observatoire du Mont-Mégantic) observations for members of the star cluster Alessi 95, which Turner et al. discovered hosts the classical Cepheid SU Cas, were used in tandem with UCAC3 ...

    • Brown dwarf census with the Dark Energy Survey year 3 data and thethin disc scale height of early L types 

      Carnero Rosell, Aurelio; Santiago, Basilio Xavier; DES Collaboration (2019) [Artigo de periódico]
      In this paper we present a catalogue of 11 745 brown dwarfs with spectral types rangingfrom L0 to T9, photometrically classified using data from the Dark Energy Survey (DES)year 3 release matched to the Vista Hemisphere ...

    • Massive open star clusters using the VVV survey : II. Discovery of six clusters with Wolf-Rayet stars 

      Chené, André-Nicolas; Bonatto, Charles Jose; Majaess, Daniel J.; Baume, Gustavo Luis; Clarke, J. R. A.; Kurtev, Radostin Georgiev; Schnurr, Olivier; Bouret, Jean-Claude; Catelan, Márcio; Emerson, Jim P.; Feinstein Baigorri, Carlos; Geisler, Doug; Grijs, Richard de; Hervé, Anthony; Ivanov, Valentin D.; Kumar, M. S. N.; Lucas, Philip W.; Mahy, Laurent; Martins, Fabrice; Mauro, Francesco; Minniti, Dante; Moni Bidin, Christian (2013) [Artigo de periódico]
      Context. The ESO Public Survey “VISTA Variables in the Vía Láctea” (VVV) provides deep multi-epoch infrared observations for an unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Nearly ...

    • Massive open star clusters using the VVV survey : I. Presentation of the data and description of the approach 

      Chené, André-Nicolas; Borissova, Jura; Clarke, J. R. A.; Bonatto, Charles Jose; Majaess, Daniel J.; Moni Bidin, Christian; Sale, Stuart E.; Mauro, Francesco; Kurtev, Radostin Georgiev; Baume, Gustavo Luis; Feinstein Baigorri, Carlos; Ivanov, Valentin D.; Geisler, Doug; Catelan, Márcio; Minniti, Dante; Lucas, Philip W.; Grijs, Richard de; Kumar, M. S. N. (2012) [Artigo de periódico]
      Context. The ESO Public Survey “VISTA Variables in the Vía Láctea” (VVV) provides deep multi-epoch infrared observations for unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Aims. The ...

    • Massive open star clusters using the VVV survey : IV. WR62-2, a new very massive star in the core of the VVVCL041 cluster 

      Chené, André-Nicolas; Ramírez Alegría, Sebastián; Borissova, Jura; O'Leary, E.; Martins, Fabrice; Hervé, Anthony; Kuhn, M. A.; Kurtev, Radostin Georgiev; Amigo, Pia; Bonatto, Charles Jose; Minniti, Dante (2015) [Artigo de periódico]
      Context. The ESO Public Survey VISTA Variables in the Vía Láctea (VVV) provides deep multi-epoch infrared observations for an unprecedented 562 sq. deg of the Galactic bulge and adjacent regions of the disk. Nearly 150 new ...

    • Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 

      Momany, Yazan; Ortolani, Sergio; Bonatto, Charles Jose; Bica, Eduardo Luiz Damiani; Barbuy, Beatriz (2008) [Artigo de periódico]
      We employ the recently installed near-infrared Multi-Conjugate Adaptive Optics demonstrator (MAD) to determine the basic properties of a newly identified, old and distant, Galactic open cluster (FSR 1415). The MAD facility ...

    • Panchromatic averaged stellar populations 

      Riffel, Rogério; Bonatto, Charles Jose; Fernandes, Roberto Cid; Pastoriza, Miriani Griselda; Balbinot, Eduardo (2011) [Artigo de periódico]
      We study how the spectral fitting of galaxies, in terms of light fractions, derived in one spectral region translates into another region, by using results from evolutionary synthesis models. In particular, we examine ...

    • Probing the circumnuclear stellar populations of Starburst galaxies in the near-infrared 

      Dametto, Natacha Zanon; Riffel, Rogério; Pastoriza, Miriani Griselda; Rodriguez-Ardila, Alberto; Hernández Jiménez, José Andrés; Carvalho, Elaine Aparecida (2014) [Artigo de periódico]
      We employ the NASA Infrared Telescope Facility’s near-infrared spectrograph SpeX at 0.8– 2.4 μm to investigate the spatial distribution of the stellar populations (SPs) in the four well-known starburst galaxies: NGC 34, ...

    • Probing the near-infrared stellar population of Seyfert galaxies 

      Riffel, Rogério; Pastoriza, Miriani Griselda; Rodriguez-Ardila, Alberto; Bonatto, Charles Jose (2009) [Artigo de periódico]
      We employ Infrared Telescope Facility SpeX near-infrared (NIR; 0.8–2.4 μm) spectra to investigate the stellar population (SP), active galactic nuclei (AGN) featureless continuum (FC) and hot dust properties in nine Sy 1 ...

    • The stellar populations of starburst galaxies through near-infrared spectroscopy 

      Riffel, Rogério; Pastoriza, Miriani Griselda; Rodriguez-Ardila, Alberto; Maraston, Claudia (2008) [Artigo de periódico]
      We study the central (inner few hundred parsecs) stellar populations of four starburst galaxies (NGC 34, 1614, 3310 and 7714) in the near-infrared (NIR), from 0.8 to 2.4 μm, by fitting combinations of stellar population ...

    • V, J, H and K imaging of the metal rich globular cluster NGC 6528 : reddening, metallicity, and distance based on cleaned colour-magnitude diagrams 

      Momany, Yazan; Ortolani, Sergio; Held, Enrico V.; Barbuy, Beatriz; Bica, Eduardo Luiz Damiani; Renzini, Alvio; Bedin, Luigi R.; Rich, Robert Michael; Marconi, Gianni (2003) [Artigo de periódico]
      New near-infrared observations of NGC6528 are presented. The JHKs observations complement a previous HST/NICMOS data set by Ortolani et al. (2001), in that they sample a larger area, contain a more numerous sample of red ...

    • VVV DR1 : the first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea 

      Saito, Roberto K.; Hempel, Maren; Minniti, Dante; Lucas, Philip W.; Rejkuba, Marina; Toledo, Ignacio; Gonzalez, O. A.; Alonso Garcia, Javier; Irwin, Michael John; Gonzalez-Solares, Eduardo; Hodgkin, Simon; Lewis, James R.; Cross, Nick; Ivanov, Valentin D.; Kerins, Eamonn; Emerson, Jim P.; Soto, M.; Amôres, Eduardo Brescansin de; Gurovich, Sebástian; Dékány, István; Angeloni, Rodolfo; Beamin, Juan Carlos; Catelan, Márcio; Padilla, Nelson; Zoccali, Manuela; Pietrukowicz, Pawel; Moni Bidin, Christian; Mauro, Francesco; Geisler, Doug; Folkes, S. L.; Sale, Stuart E.; Borissova, Jura; Kurtev, Radostin Georgiev; Ahumada, Andrea Veronica; Alonso, Maria Victoria; Adamson, Andy; Arias, Julia Inés; Bandyopadhyay, Reba M.; Barbá, Rodolfo H.; Barbuy, Beatriz; Baume, Gustavo Luis; Bedin, Luigi R.; Bellini, Andrea; Bica, Eduardo Luiz Damiani; Bonatto, Charles Jose; Bronfman, Leonardo; Carraro, Giovanni; Chené, André-Nicolas; Claria Olmedo, Juan Jose; Clarke, J. R. A.; Contreras, C.; Corvillon, Andrea; Grijs, Richard de; Dias, Bruno Moreira de Souza; Drew, Janet E.; Fariña, Cecilia; Feinstein Baigorri, Carlos; Fernández Lajús, Eduardo Eusebio; Gamen, Roberto C.; Gieren, Wolfgang P.; Goldman, Bertrand; González-Fernández, Carlos; Grand, R. J. J.; Gunthardt, Guillermo; Hambly, Nigel C.; Hanson, M. M.; Helminiak, Krzysztof Grzegorz; Hoare, Melvin G.; Huckvale, L.; Jordán, Andrés; Kinemuchi, Karen; Longmore, Andy; López Corredoira, Martín; Maccarone, Thomas J.; Majaess, Daniel J.; Martín Guerrero de Escalante, Eduardo L.; Masetti, Nicola; Mennickent, Ronnald Enrique; Mirabel, I. Felix; Monaco, Lorenzo; Morelli, Lorenzo; Motta, Verónica; Palma, Tali; Parisi, M. C.; Parker, Quentin; Peñaloza, Francisco; Pietrzynski, Grzegorz; Pignata, Giuliano; Popescu, Bogdan; Read, Michael A.; Rojas, Alejandra; Roman-Lopes, Alexandre; Ruiz, Maria Teresa; Saviane, Ivo; Schreiber, Matthias R.; Schröder, A. C.; Sharma, S.; Smith, Michael D.; Sodre Junior, Laerte; Stead, Joe; Stephens, Andrew; Tamura, Motohide; Tappert, Claus; Thompson, Mark A.; Valenti, Elena; Vanzi, Leonardo; Walton, Nicholas A.; Weidmann, Walter; Zijlstra, Albert (2012) [Artigo de periódico]
      Context. The ESO public survey VISTA variables in the Vía Láctea (VVV) started in 2010. VVV targets 562 sq. deg in the Galactic bulge and an adjacent plane region and is expected to run for about five years. Aims. We ...