Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Peter D. Edmonds"'
Autor:
J. E. Grindlay, Phyllis M. Lugger, Jonathan Anderson, Peter D. Edmonds, Rudy Wijnands, L. E. Rivera Sandoval, Natalia Ivanova, Adrienne M. Cool, M. van den Berg, Craig O. Heinke, Haldan N. Cohn
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 475(4), 4841-4867. Oxford University Press
We present 22 new (+3 confirmed) cataclysmic variables (CVs) in the non core-collapsed globular cluster 47 Tucanae (47 Tuc). The total number of CVs in the cluster is now 43, the largest sample in any globular cluster so far. For the identifications
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cac12606a6f25e97581f669bcb02f0fc
Autor:
Peter D. Edmonds, Kurt Sandstrom, Timothy A. Bigelow, Marvin C. Ziskin, John G. Abbott, Charles C. Church, Bruce A. Herman, Kai Erik Thomenius, Tat Jin Teo
Publikováno v:
Journal of Ultrasound in Medicine. 30:714-734
The thermal index (TI) has been used as a relative indicator of thermal risk during diagnostic ultrasound examinations for many years. It is useful in providing feedback to the clinician or sonographer, allowing assessment of relative, potential risk
Autor:
A. P. Jacob, Timothy R. Bedding, S. Frandsen, H. Kjeldsen, G. Kopacki, J. Matthiesen, E. Michel, Torben Arentoft, R. L. Gilliland, Peter D. Edmonds, D. Stello, H. Bruntt, Frank Grundahl
Publikováno v:
Frandsen, S, Bruntt, H, Grundahl, F, Kopacki, G, Kjeldsen, H, Arentoft, T, Stello, D, Bedding, T R, Jacob, A P, Gilliland, R L, Edmonds, P D, Michel, E & Matthiesen, J 2007, ' A search for solar-like oscillations in K giants in the globular cluster M 4 ', Astronomy & Astrophysics, vol. 475, no. 3, pp. 991-1002 . https://doi.org/10.1051/0004-6361:20078267
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2007, 475, pp.991-1002
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2007, 475, pp.991-1002
To expand the range in the colour-magnitude diagram where asteroseismology can be applied, we organized a photometry campaign to find evidence for solar-like oscillations in giant stars in the globular cluster M4. The aim was to detect the comb-like
Publikováno v:
Journal of Ultrasound in Medicine. 24:1171-1179
Objective. This report responds to a request from a deputy editor of the Journal of Ultrasound in Medicine (SUM) for guidelines for measurement and reporting of acoustic output and exposure. The request was addressed to the American Institute of Ultr
Autor:
Peter G. Jonker, Jonathan E. Grindlay, Jon M. Miller, Peter D. Edmonds, David Pooley, Walter H. G. Lewin, Craig O. Heinke, Rudy Wijnands, Edward M. Cackett
Publikováno v:
The Astrophysical Journal. 620:922-928
The globular cluster NGC 6440 is known to harbor a bright neutron-star X-ray transient. We observed the globular cluster with Chandra on two occasions when the bright transient was in its quiescent state in July 2000 and June 2003 (both observations
Autor:
Paul J. Callanan, Charles D. Bailyn, Peter D. Edmonds, Jonathan Anderson, Adrienne M. Cool, Daryl Haggard, J. E. Grindlay, Craig O. Heinke
Publikováno v:
The Astrophysical Journal. 613:512-516
We report the discovery of an optical counterpart to a quiescent neutron star in the globular cluster Omega Centauri (NGC 5139). The star was found as part of our wide-field imaging study of Omega Cen using the Advanced Camera for Surveys (ACS) on Hu
Publikováno v:
The Astrophysical Journal. 611:413-417
We report the detection, with HST, of an optical counterpart to the transient supersoft X-ray source 1E 1339.8+2837, in the globular cluster M3. The counterpart is found near the faint end of the subgiant branch in the V vs V-I color magnitude diagra
Publikováno v:
The Astrophysical Journal. 596:1177-1196
We report the largest number of optical identifications of X-ray sources yet obtained in a single globular cluster. Using deep Chandra/ACIS-I imaging and extensive HST studies with WFPC2, we have detected optical counterparts to at least 22 cataclysm
Publikováno v:
The Astrophysical Journal. 596:1197-1219
We report time series and variability information for the optical identifications of X-ray sources in 47 Tuc reported in Paper I. The eight CVs with secure orbital periods have fainter accretion disks, in the V band, than field CVs with similar perio
Publikováno v:
The Astrophysical Journal. 588:452-463
We report spectral and variability analysis of two quiescent low mass X-ray binaries (X5 and X7, previously detected with the ROSAT HRI) in a Chandra ACIS-I observation of the globular cluster 47 Tuc. X5 demonstrates sharp eclipses with an 8.666+-0.0