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Browsing by Author "Gallagher, J.S."
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AGN activity and the misaligned hot ISM in the compact radio elliptical NGC4278
Pellegrini, S.; Wang, J.; Fabbiano, G.; Kim, D.-W.; Brassington, Nicola; Gallagher, J.S.; Trinchieri, G.; Zezas, A. (2012-10-20)The analysis of a deep (579ks) Chandra ACIS pointing of the elliptical galaxy NGC4278, which hosts a low-luminosity active galactic nucleus (AGN) and compact radio emission, allowed us to detect extended emission from hot ... -
Comparing GC and Field LMXBs in elliptical galaxies with Deep Chandra and Hubble Data
Kim, D.-W.; Fabbiano, G.; Brassington, Nicola; Fragos, T.; Kalogera, V.; Zezas, A.; Jordán, A.; Sivakoff, G.R.; Kundu, A.; Zepf, S.E.; Angelini, L.; Davies, R. L.; Gallagher, J.S.; Juett, A.M.; King, A.R.; Pellegrini, S.; Sarazin, C.L.; Trinchieri, G. (2009-09-01)We present a statistical study of the low-mass X-ray binary (LMXB) populations of three nearby, old elliptical galaxies: NGC 3379, NGC 4278, and NGC 4697. With a cumulative ~1 Ms Chandra ACIS observing time, we detect ... -
Models for Low-Mass X-Ray Binaries in the Elliptical Galaxies NGC 3379 and NGC 4278 : Comparison with Observations
Fragos, T.; Kalogera, V.; Belczynski, K.; Fabbiano, G.; Kim, D.-W.; Brassington, Nicola; Angelini, L.; Davies, R. L.; Gallagher, J.S.; King, A.R.; Pellegrini, S.; Trinchieri, G.; Zepf, S.E.; Kundu, A.; Zezas, A. (2008-08-01)We present theoretical models for the formation and evolution of populations of low-mass X-ray binaries (LMXBs) in the two elliptical galaxies NGC 3379 and NGC 4278. The models are calculated with the recently updated ... -
NGC 3310 and its tidal debris: remnants of galaxy evolution
Wehner, E.H.; Gallagher, J.S.; Papaderos, P.; Fritze, U.; Westfall, K.B. (2006) -
Rescuing the initial mass function for Arp 78
Kotulla, R.; Fritze, U.; Gallagher, J.S. (2008) -
Star cluster formation and evolution in nearby starburst galaxies - I. Systematic uncertainties
de Grijs, R.; Fritze, U.; Anders, P.; Gallagher, J.S.; Bastian, N.; Taylor, V.A.; Windhorst, R.A. (2003) -
Transient Low-mass X-ray Binary Populations in Elliptical Galaxies NGC 3379 and NGC 4278
Fragos, T.; Kalogera, V.; Willems, B.; Belczynski, K.; Fabbiano, G.; Kim, D.-W.; Brassington, Nicola; Angelini, L.; Davies, R. L.; Gallagher, J.S.; King, A.R.; Pellegrini, S.; Trinchieri, G.; Zepf, S.E.; Zezas, A. (2009-09-01)We propose a physically motivated and self-consistent prescription for the modeling of transient neutron star low-mass X-ray binary (LMXB) properties, such as duty cycle (DC), outburst duration, and recurrence time. We ...