Browsing by Author "Gallagher, J."

Now showing items 1-5 of 5

    • Deep Chandra Monitoring Observations of NGC 3379 : Catalog of Source Properties 

      Brassington, Nicola; Fabbiano, G.; Kim, D.-W.; Zezas, A.; Zepf, S.; Kundu, A.; Angelini, L.; Davies, R. L.; Gallagher, J.; Kalogera, V.; Fragos, T.; King, A.R.; Pellegrini, S.; Trinchieri, G. (2008-11-01)
      We present the properties of the discrete X-ray sources detected in our monitoring program of the `typical' elliptical galaxy, NGC 3379, observed with Chandra ACIS-S in five separate pointings, resulting in a co-added ...

    • Deep Chandra Monitoring Observations of NGC 4278 : Catalog of Source Properties 

      Brassington, Nicola; Fabbiano, G.; Kim, D.-W.; Zezas, A.; Zepf, S.; Kundu, A.; Angelini, L.; Davies, R. L.; Gallagher, J.; Kalogera, V.; Fragos, T.; King, A.R.; Pellegrini, S.; Trinchieri, G. (2009-04-01)
      We present the properties of the discrete X-ray sources detected in our monitoring program of the globular cluster (GC) rich elliptical galaxy, NGC 4278, observed with Chandra ACIS-S in six separate pointings, resulting ...

    • Discovery of Hot Gas in Outflow in NGC 3379 

      Trinchieri, G.; Pellegrini, S.; Fabbiano, G.; Fu, R.; Brassington, Nicola; Zezas, A.; Kim, D.-W.; Gallagher, J.; Angelini, L.; Davies, R. L.; Kalogera, V.; King, A.R.; Zepf, S. (2008-12-01)
      We report the discovery of a faint (LX~4+/-1.5×1037 ergs s-1, 0.5-2 keV), outflowing gaseous hot interstellar medium (ISM) in NGC 3379. This represents the lowest X-ray luminosity ever measured from a hot phase of the ISM ...

    • FIELD AND GLOBULAR CLUSTER LOW-MASS X-RAY BINARIES IN NGC 4278 

      Fabbiano, G.; Brassington, Nicola; Lentati, L.; Angelini, L.; Davies, R. L.; Gallagher, J.; Kalogera, V.; Kim, D. -W.; King, A. R.; Kundu, A.; Pellegrini, S.; Richings, A. J.; Trinchieri, G.; Zezas, A.; Zepf, S. (2010-12)
      We report a detailed spectral analysis of the population of low-mass X-ray binaries (LMXBs) detected in the elliptical galaxy NGC 4278 with Chandra. Seven luminous sources were studied individually, four in globular clusters ...

    • The X-ray spectra of the luminous LMXBs in NGC 3379 : field and globular cluster sources 

      Brassington, Nicola; Fabbiano, G.; Blake, S.; Zezas, A.; Angelini, L.; Davies, R. L.; Gallagher, J.; Kalogera, V.; Kim, D. -W.; King, A. R.; Kundu, A.; Trinchieri, G.; Zepf, S. (2010-12)
      From a deep multi-epoch Chandra observation of the elliptical galaxy NGC 3379 we report the spectral properties of eight luminous LMXBs (L-X > 1.2 x 10(38) erg s(-1)). We also present a set of spectral simulations, produced ...