Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Robert C. Berrington"'
Autor:
R. Wes Tobin, Robert C. Berrington
Publikováno v:
New Astronomy. 101:102019
Autor:
Dieter H. Hartmann, Todd C. Hillwig, James R. Webb, Christopher G. De Pree, Brian W. Murphy, Gary Henson, Robert C. Berrington, Matt A. Wood, Peter Mack, William C. Keel, Javier Licandro, Terry D. Oswalt, Dan Batcheldor, Martha Leake
Publikováno v:
Publications of the Astronomical Society of the Pacific. 133:069201
Autor:
Brian W. Murphy, Todd C. Hillwig, Christopher G. De Pree, Terry D. Oswalt, Peter Mack, Martha Leake, Gary Henson, Matt A. Wood, Robert C. Berrington, Dieter H. Hartmann, William C. Keel, Javier Licandro, James R. Webb, Dan Batcheldor
We describe the remote facilities operated by the Southeastern Association for Research in Astronomy (SARA), a consortium of colleges and universities in the US partnered with Lowell Observatory, the Chilean National Telescope Allocation Committee, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d6b2fae3e529a8ba8328934d2b80a5c
http://arxiv.org/abs/1608.06245
http://arxiv.org/abs/1608.06245
Autor:
Karen Kinemuchi, S. E. Woosley, A. J. Monson, Henry A. Kobulnicky, M. Pierce, Robert C. Berrington, Jennifer S. Irwin, Chris L. Fryer, B. Uzpen, Daniel C. Kiminki
Publikováno v:
The Astrophysical Journal. 664:1102-1120
We conducted a radial velocity survey of the Cygnus OB2 Association over a 6 year (1999 - 2005) time interval to search for massive close binaries. During this time we obtained 1139 spectra on 146 OB stars to measure mean systemic radial velocities a
Publikováno v:
The Astronomical Journal. 123:2261-2279
We present 236 new radial velocities of galaxies in the cluster A2256 measured with the WIYN Hydra multi-object spectrograph. Combined with the previous work of Fabricant, Kent, and Kurtz (1989), we have velocities for a total of 319 galaxies of whic
Autor:
Brian W. Murphy, Shawn D. Slavin, Phyllis M. Lugger, Robert C. Berrington, G. A. Drukier, Patrick Seitzer, Haldan N. Cohn
Publikováno v:
The Astronomical Journal. 115:708-724
We present velocities for 230 stars in the outer parts of the globular cluster M15 measured with the Hydra multi-object spectrograph on the WIYN telescope. A new Bayesian technique is used for analyzing the data. The mean velocity of the cluster is -
Autor:
Michael D. Gregg, Michael S. Brotherton, Rajib Ganguly, Sarah Gallagher, Mark Lacy, Ritaban Chatterjee, Michael A. DiPompeo, Sally A. Laurent-Muehleisen, Zhaohouli Shang, Robert C. Berrington, Patrick B. Hall
We report the results of a new 60 ks Chandra X-ray Observatory Advanced CCD Imaging Spectrometer S-array (ACIS-S) observation of the reddened, radio-selected, highly polarized `FeLoBAL' quasar FIRST J1556+3517. We investigated a number of models of v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16e56a9a71f0ef867acf51659c15446d
Autor:
Phyllis M. Lugger, S. D. Slavin, Robert C. Berrington, Brian W. Murphy, G. A. Drukier, Haldan N. Cohn
We report the determination of high-accuracy radial velocities for 299 members of the globular cluster M92 using the Hydra multi-object spectrograph on the WIYN telescope. We have concentrated on stars outside of the central region of the cluster, lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8323d88bb9a24ec8899917e335048234
We have developed a numerical model for the temporal evolution of particle and photon spectra resulting from nonthermal processes at the shock fronts formed in merging clusters of galaxies. Fermi acceleration is approximated by injecting power-law di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db5a086c535b4058d463cdf7f4f6b90d
http://arxiv.org/abs/astro-ph/0209436
http://arxiv.org/abs/astro-ph/0209436
Publikováno v:
AIP Conference Proceedings.
Subcluster interactions within clusters of galaxies produce shocks that accelerate nonthermal particles. We treat Fermi acceleration of nonthermal electrons and protons by injecting power-law distributions of particles during the merger event, subjec