Zobrazeno 1 - 10
of 128
pro vyhledávání: '"R M, Johnstone"'
Autor:
Brian R. McNamara, Stefi A. Baum, A. C. Fabian, Jeremy S. Sanders, Megan Donahue, Lindsay J. King, Christopher P. O'Dea, Joseph E. Coleman, Alastair C. Edge, Brandyn E. Lee, R. M. Johnstone, Helen Russell, Jacob Aaron White, Douglas Clowe, Rebecca E. A. Canning
Publikováno v:
Monthly notices of the Royal Astronomical Society, 2015, Vol.453(3), pp.2718-2730 [Peer Reviewed Journal]
We present a dynamical analysis of the merging galaxy cluster system Abell 2146 using spectroscopy obtained with the Gemini Multi-Object Spectrograph on the Gemini North telescope. As revealed by the Chandra X-ray Observatory, the system is undergoin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f34752d35f09fb6b67c1b98a376da7d1
https://doi.org/10.1093/mnras/stv1831
https://doi.org/10.1093/mnras/stv1831
Autor:
Gary J. Ferland, Jeremy S. Sanders, R. L. Porter, P. A. M. van Hoof, Marios Chatzikos, R. J. R. Williams, Matt L. Lykins, Rebecca E. A. Canning, A. C. Fabian, R. M. Johnstone
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 446:1234-1244
We announce a new facility in the spectral code CLOUDY that enables tracking the evolution of a cooling parcel of gas with time. For gas cooling from temperatures relevant to galaxy clusters, earlier calculations estimated the [Fe XIV] {\lambda}5303
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50e5f98e940c2434944e17f46a8998c4
https://doi.org/10.1093/mnras/stu2173
https://doi.org/10.1093/mnras/stu2173
Autor:
Rebecca E. A. Canning, Robert W. O'Connell, David J. Rosario, J. E. Ryon, R. M. Johnstone, J. S. Gallagher, C. J. Conselice, A. C. Fabian, R. F. G. Wyse, Amalia Hicks, Ralf Kotulla
Publikováno v:
Canning, R E A, Ryon, J E, J., S G III, Kotulla, R, O'Connell, R W, Fabian, A C, Johnstone, R M, Conselice, C J, Hicks, A, Rosario, D & Wyse, R F G 2014, ' Filamentary star formation in NGC 1275 ', Monthly Notices of the Royal Astronomical Society, vol. 444, no. 1, pp. 336-349 . https://doi.org/10.1093/mnras/stu1191
We examine the star formation in the outer halo of NGC~1275, the central galaxy in the Perseus cluster (Abell 426), using far ultraviolet and optical images obtained with the Hubble Space Telescope. We have identified a population of very young, comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0220606f165823e746aca0bb3e888b3c
https://doi.org/10.1093/mnras/stu1191
https://doi.org/10.1093/mnras/stu1191
Autor:
Alastair C. Edge, Craig L. Sarazin, R. M. Johnstone, Steven W. Allen, Dharam V. Lal, Jeremy S. Sanders, Rebecca E. A. Canning, A. C. Fabian, P. Salomé, Tracy E. Clarke, Mouyuan Sun, Simona Giacintucci, Norbert Werner, Paul Nulsen, Megan Donahue
Publikováno v:
Monthly notices of the Royal Astronomical Society, 2013, Vol.435(2), pp.1108-1125 [Peer Reviewed Journal]
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2013, 435 (2), pp.1108-1125. ⟨10.1093/mnras/stt1345⟩
Monthly Notices of the Royal Astronomical Society, 2013, 435 (2), pp.1108-1125. ⟨10.1093/mnras/stt1345⟩
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2013, 435 (2), pp.1108-1125. ⟨10.1093/mnras/stt1345⟩
Monthly Notices of the Royal Astronomical Society, 2013, 435 (2), pp.1108-1125. ⟨10.1093/mnras/stt1345⟩
We report the results of a multi-wavelength study of the nearby galaxy group, Abell 3581 (z=0.0218). This system hosts the most luminous cool core of any nearby group and exhibits active radio mode feedback from the super-massive black hole in its br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c50af7740f7b450814aeb5a3f16438a
https://doi.org/10.1093/mnras/stt1345
https://doi.org/10.1093/mnras/stt1345
Autor:
Steven W. Allen, R. J. Wilman, Alastair C. Edge, C. S. Crawford, Andrew C. Fabian, R. M. Johnstone
The origin of rovibrational H_2 emission in the central galaxies of cooling flow clusters is poorly understood. Here we address this issue using data from our near-infrared spectroscopic survey of 32 of the most line luminous such systems, presented
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31fdcc6d0c4f0c00ae81f79c03457b80
https://ora.ox.ac.uk/objects/uuid:153ebe56-6d0e-459d-b9c6-8ca2659d0577
https://ora.ox.ac.uk/objects/uuid:153ebe56-6d0e-459d-b9c6-8ca2659d0577
Autor:
R. M. Johnstone, Jeremy S. Sanders, Anna Ogorzalek, J. de Plaa, Y. Y. Zhang, Alexis Finoguenov, Rea Canning, Liyi Gu, Norbert Werner, Ciro Pinto, Andrew C. Fabian, Irina Zhuravleva, Jussi Ahoranta
We extend our previous study of the cool gas responsible for the emission of O $\tiny \text{VII}$ X-ray lines in the cores of clusters and groups of galaxies. This is the coolest X-ray emitting phase and connects the 10 000 K H $\alpha$ emitting gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2690425ab5e8f6a6055dcd86d2b90b45
http://arxiv.org/abs/1606.04954
http://arxiv.org/abs/1606.04954
Autor:
G. B. Taylor, Francoise Combes, Christopher S. Reynolds, Nina A. Hatch, R. M. Johnstone, C. J. Conselice, A. C. Fabian, Helen Russell, P. Salomé, Gary J. Ferland, Stephen Walker, Ciro Pinto, Jeremy S. Sanders, C. S. Crawford, John S. Gallagher, Rebecca E. A. Canning, Ellen G. Zweibel
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 461 (1), pp.922-928. ⟨10.1093/mnras/stw1350⟩
Monthly Notices of the Royal Astronomical Society, 2016, 461 (1), pp.922-928. ⟨10.1093/mnras/stw1350⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 461 (1), pp.922-928. ⟨10.1093/mnras/stw1350⟩
Monthly Notices of the Royal Astronomical Society, 2016, 461 (1), pp.922-928. ⟨10.1093/mnras/stw1350⟩
Narrow-band HST imaging has resolved the detailed internal structure of the 10 kpc diameter H alpha+[NII] emission line nebulosity in NGC4696, the central galaxy in the nearby Centaurus cluster, showing that the dusty, molecular, filaments have a wid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc5427d0f7093670d08eb95b175009b7
http://arxiv.org/abs/1606.02436
http://arxiv.org/abs/1606.02436
Autor:
Christopher P. O'Dea, Andrew C. Fabian, Megan Donahue, Helen Russell, Gary J. Ferland, R. M. Johnstone, Rupal Mittal, Alastair C. Edge, J. B. Raymond Oonk, Francoise Combes, Stefi A. Baum, Grant R. Tremblay, Philippe Salomé, James Whelan
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 426:2957-2977
We present Herschel observations of the core of the Perseus cluster of galaxies. The brightest cluster galaxy, NGC 1275, is surrounded by a network of filaments previously imaged extensively in H{\alpha} and CO. In this work, we report detections of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ece120019d0e63051f4e8bddaa99ffba
https://doi.org/10.1111/j.1365-2966.2012.21891.x
https://doi.org/10.1111/j.1365-2966.2012.21891.x
Autor:
Katherine M. Blundell, R. M. Johnstone, Jeremy S. Sanders, G. B. Taylor, A. C. Fabian, C. S. Crawford, Helen Russell, Elena Belsole
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 422:590-599
We present a 100 ks Chandra observation studying the extended X-ray emission around the powerful z=1.04 quasar PKS1229-021. The diffuse cluster X-ray emission can be traced out to ~15 arcsec (~120 kpc) radius and there is a drop in the calculated har
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f80f20ea0b3be10ade5243bbbaf53b2
https://doi.org/10.1111/j.1365-2966.2012.20637.x
https://doi.org/10.1111/j.1365-2966.2012.20637.x
Autor:
E. M. Churazov, Jeremy S. Sanders, R. Jay Gabany, Helen Russell, R. M. Johnstone, P. Salomé, Steven W. Allen, Andrew J. Young, William R. Forman, Julie Hlavacek-Larrondo, C. S. Crawford, Andrew C. Fabian, Christopher S. Reynolds, G. B. Taylor, R. E. A. Canning
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 418:2154-2164
We present new Chandra images of the X-ray emission from the core of the Perseus cluster of galaxies. The total observation time is now 1.4 Ms. New depressions in X-ray surface brightness are discovered to the north of NGC1275, which we interpret as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26cc6af1d2e0bdc944f32e74b5c4b3d5
https://doi.org/10.1111/j.1365-2966.2011.19402.x
https://doi.org/10.1111/j.1365-2966.2011.19402.x