Search Results
Showing 21-40 of about 61 results.
A BCG with Offset Cooling: Is the AGN Feedback Cycle Broken in A2495?DOI: info:10.3847/1538-4357/ab4808v. 885111
Pasini, T., Gitti, M., Brighenti, F., Temi, P., Amblard, A., Hamer, S. L., Ettori, S., O'Sullivan, Ewan, and Gastaldello, F. 2019. "A BCG with Offset Cooling: Is the AGN Feedback Cycle Broken in A2495?" The Astrophysical Journal, 885 111. https://doi.org/10.3847/1538-4357/ab4808.
Forming One of the Most Massive Objects in the Universe: The Quadruple Merger in Abell 1758DOI: info:10.3847/1538-4357/ab35e4v. 88259
Schellenberger, Gerrit, David, Laurence, O'Sullivan, Ewan, Vrtilek, Jan M., and Haines, C. P. 2019. "Forming One of the Most Massive Objects in the Universe: The Quadruple Merger in Abell 1758." The Astrophysical Journal, 882 59. https://doi.org/10.3847/1538-4357/ab35e4.
The mystery of the "Kite" radio source in Abell 2626: Insights from new Chandra observationsDOI: info:10.1051/0004-6361/201731380v. 610A89
Ignesti, A., Gitti, M., Brunetti, G., O'Sullivan, Ewan, Sarazin, C., and Wong, K. 2018. "The mystery of the "Kite" radio source in Abell 2626: Insights from new Chandra observations." Astronomy and Astrophysics, 610 A89. https://doi.org/10.1051/0004-6361/201731380.
Kim, Dong-Woo, Anderson, Craig, Burke, Doug, Fabbiano, Giuseppina, Fruscione, Antonella, Lauer, Jen, McCollough, Michael, Morgan, Doug, Mossman, Amy, O'Sullivan, Ewan, Paggi, Alessandro, Vrtilek, Saeqa, and Trinchieri, Ginevra. 2018. "Disturbed Fossil Group Galaxy NGC 1132." The Astrophysical Journal, 853 129. https://doi.org/10.3847/1538-4357/aaa43a.
The Complete Local-volume Groups Sample - II. A study of the central radio galaxies in the high-richness sub-sampleDOI: info:10.1093/mnras/sty2030v. 4811550–1577
Kolokythas, Konstantinos, O'Sullivan, Ewan, Raychaudhury, Somak, Giacintucci, Simona, Gitti, Myriam, and Babul, Arif. 2018. "The Complete Local-volume Groups Sample - II. A study of the central radio galaxies in the high-richness sub-sample." Monthly Notices of the Royal Astronomical Society, 481 1550–1577. https://doi.org/10.1093/mnras/sty2030.
Cold gas in a complete sample of group-dominant early-type galaxiesDOI: info:10.1051/0004-6361/201833580v. 618A126
O'Sullivan, Ewan J., Combes, F., Salomé, P., David, L. P., Babul, A., Vrtilek, Jan M., Lim, J., Olivares, V., Raychaudhury, S., and Schellenberger, Gerrit. 2018. "Cold gas in a complete sample of group-dominant early-type galaxies." Astronomy and Astrophysics, 618 A126. https://doi.org/10.1051/0004-6361/201833580.
The origin of the X-ray, radio and H I structures in the NGC 5903 galaxy groupDOI: info:10.1093/mnras/stx2702v. 4735248–5266
O'Sullivan, Ewan, Kolokythas, Konstantinos, Kantharia, Nimisha G., Raychaudhury, Somak, David, Laurence P., and Vrtilek, Jan M. 2018. "The origin of the X-ray, radio and H I structures in the NGC 5903 galaxy group." Monthly Notices of the Royal Astronomical Society, 473 5248–5266. https://doi.org/10.1093/mnras/stx2702.
An Enigmatic Population of Luminous Globular Clusters in a Galaxy Lacking Dark MatterDOI: info:10.3847/2041-8213/aab60bv. 856L30
van Dokkum, Pieter, Cohen, Yotam, Danieli, Shany, Kruijssen, J. M. Diederik, Romanowsky, Aaron J., Merritt, Allison, Abraham, Roberto, Brodie, Jean, Conroy, Charlie, Lokhorst, Deborah, Mowla, Lamiya, O'Sullivan, Ewan, and Zhang, Jielai. 2018. "An Enigmatic Population of Luminous Globular Clusters in a Galaxy Lacking Dark Matter." The Astrophysical Journal Letters, 856 L30. https://doi.org/10.3847/2041-8213/aab60b.
van Dokkum, Pieter, Danieli, Shany, Cohen, Yotam, Merritt, Allison, Romanowsky, Aaron J., Abraham, Roberto, Brodie, Jean, Conroy, Charlie, Lokhorst, Deborah, Mowla, Lamiya, O'Sullivan, Ewan, and Zhang, Jielai. 2018. "A galaxy lacking dark matter." Nature, 555 629–632. https://doi.org/10.1038/nature25767.
The Presence of Thermally Unstable X-Ray Filaments and the Production of Cold Gas in the NGC 5044 GroupDOI: info:10.3847/1538-4357/aa756cv. 84284
David, Laurence P., Vrtilek, Jan, O'Sullivan, Ewan, Jones, Christine, Forman, William, and Sun, Ming. 2017. "The Presence of Thermally Unstable X-Ray Filaments and the Production of Cold Gas in the NGC 5044 Group." The Astrophysical Journal, 842 84. https://doi.org/10.3847/1538-4357/aa756c.
The Complete Local Volume Groups Sample - I. Sample selection and X-ray properties of the high-richness subsampleDOI: info:10.1093/mnras/stx2078v. 4721482–1505
O'Sullivan, Ewan, Ponman, Trevor J., Kolokythas, Konstantinos, Raychaudhury, Somak, Babul, Arif, Vrtilek, Jan M., David, Laurence P., Giacintucci, Simona, Gitti, Myriam, and Haines, Chris P. 2017. "The Complete Local Volume Groups Sample - I. Sample selection and X-ray properties of the high-richness subsample." Monthly Notices of the Royal Astronomical Society, 472 1482–1505. https://doi.org/10.1093/mnras/stx2078.
Constraining the Physical State of the Hot Gas Halos in NGC 4649 and NGC 5846DOI: info:10.3847/1538-4357/aa7897v. 8445
Paggi, Alessandro, Kim, Dong-Woo, Anderson, Craig, Burke, Doug, D'Abrusco, Raffaele, Fabbiano, Giuseppina, Fruscione, Antonella, Gokas, Tara, Lauer, Jen, McCollough, Michael, Morgan, Doug, Mossman, Amy, O'Sullivan, Ewan, Trinchieri, Ginevra, Vrtilek, Saeqa, Pellegrini, Silvia, Romanowsky, Aaron J., and Brodie, Jean. 2017. "Constraining the Physical State of the Hot Gas Halos in NGC 4649 and NGC 5846." The Astrophysical Journal, 844 5. https://doi.org/10.3847/1538-4357/aa7897.
New insights into the evolution of the FR I radio galaxy 3C 270 (NGC 4261) from VLA and GMRT radio observationsDOI: info:10.1093/mnras/stv665v. 4501732–1744
Kolokythas, Konstantinos, O'Sullivan, Ewan J., Giacintucci, Simona, Raychaudhury, Somak, Ishwara-Chandra, C. H., Worrall, Diana M., and Birkinshaw, Mark. 2015. "New insights into the evolution of the FR I radio galaxy 3C 270 (NGC 4261) from VLA and GMRT radio observations." Monthly Notices of the Royal Astronomical Society, 450 1732–1744. https://doi.org/10.1093/mnras/stv665.
Cold gas in group-dominant elliptical galaxiesDOI: info:10.1051/0004-6361/201424835v. 573EDP SciencesA111
O'Sullivan, Ewan J., Combes, F., Hamer, S., Salomé, P., Babul, A., and Raychaudhury, S. 2015. "Cold gas in group-dominant elliptical galaxies." Astronomy and Astrophysics, 573 A111. https://doi.org/10.1051/0004-6361/201424835.
Molecular Gas in the X-Ray Bright Group NGC 5044 as Revealed by ALMADOI: info:10.1088/0004-637X/792/2/94v. 79294
David, Laurence P., Lim, Jeremy, Forman, William, Vrtilek, Jan, Combes, Francoise, Salome, Philippe, Edge, Alastair, Hamer, Stephen, Jones, Christine, Sun, Ming, O'Sullivan, Ewan J., Gastaldello, Fabio, Bardelli, Sandro, Temi, Pasquale, Schmitt, Henrique, Ohyama, Youichi, Mathews, William, Brighenti, Fabrizio, Giacintucci, Simona, and Trung, Dinh-V. 2014. "Molecular Gas in the X-Ray Bright Group NGC 5044 as Revealed by ALMA." The Astrophysical Journal, 792 94. https://doi.org/10.1088/0004-637X/792/2/94.
The impact of sloshing on the intragroup medium and old radio lobe of NGC 5044DOI: info:10.1093/mnras/stt1926v. 437730–739
O'Sullivan, Ewan J., David, Laurence P., and Vrtilek, Jan M. 2014. "The impact of sloshing on the intragroup medium and old radio lobe of NGC 5044." Monthly Notices of the Royal Astronomical Society, 437 730–739. https://doi.org/10.1093/mnras/stt1926.
Deep Chandra Observations of HCG 16. II. The Development of the Intra-group Medium in a Spiral-rich GroupDOI: info:10.1088/0004-637X/793/2/74v. 79374
O'Sullivan, Ewan J., Vrtilek, J. M., David, L. P., Giacintucci, S., Zezas, Andreas, Ponman, T. J., Mamon, G. A., Nulsen, P., and Raychaudhury, S. 2014. "Deep Chandra Observations of HCG 16. II. The Development of the Intra-group Medium in a Spiral-rich Group." The Astrophysical Journal, 793 74. https://doi.org/10.1088/0004-637X/793/2/74.
Deep Chandra Observations of HCG 16. I. Active Nuclei, Star Formation, and Galactic WindsDOI: info:10.1088/0004-637X/793/2/73v. 79373
O'Sullivan, Ewan J., Zezas, Andreas, Vrtilek, J. M., Giacintucci, S., Trevisan, M., David, L. P., Ponman, T. J., Mamon, G. A., and Raychaudhury, S. 2014. "Deep Chandra Observations of HCG 16. I. Active Nuclei, Star Formation, and Galactic Winds." The Astrophysical Journal, 793 73. https://doi.org/10.1088/0004-637X/793/2/73.
Shock-enhanced C+ Emission and the Detection of H2O from the Stephan's Quintet Group-wide Shock Using HerschelDOI: info:10.1088/0004-637X/777/1/66v. 77766
Appleton, P. N., Guillard, P., Boulanger, F., Cluver, M. E., Ogle, P., Falgarone, E., Pineau des Forêts, G., O'Sullivan, Ewan J., Duc, P. -A, Gallagher, S., Gao, Y., Jarrett, T., Konstantopoulos, I., Lisenfeld, U., Lord, S., Lu, N., Peterson, B. W., Struck, C., Sturm, E., Tuffs, R., Valchanov, I., van der Werf, P., and Xu, K. C. 2013. "Shock-enhanced C+ Emission and the Detection of H2O from the Stephan's Quintet Group-wide Shock Using Herschel." The Astrophysical Journal, 777 66. https://doi.org/10.1088/0004-637X/777/1/66.
Cold fronts and metal anisotropies in the X-ray cool core of the galaxy cluster Zw 1742+3306DOI: info:10.1051/0004-6361/201321107v. 555EDP Sciences93
Ettori, S., Gastaldello, F., Gitti, M., O'Sullivan, Ewan J., Gaspari, M., Brighenti, F., David, L., and Edge, A. C. 2013. "Cold fronts and metal anisotropies in the X-ray cool core of the galaxy cluster Zw 1742+3306." Astronomy and Astrophysics, 555 93. https://doi.org/10.1051/0004-6361/201321107.