Zobrazeno 1 - 10
of 87
pro vyhledávání: '"WOODLEY, KRISTIN A."'
Autor:
Webb, Jeremy J., Sills, Alison, Harris, William E., Gómez, Matías, Paolillo, Maurizio, Woodley, Kristin A., Puzia, Thomas H.
We investigate the shallow increase in globular cluster half-light radii with projected galactocentric distance $R_{gc}$ observed in the giant galaxies M87, NGC 1399, and NGC 5128. To model the trend in each galaxy, we explore the effects of orbital
Externí odkaz:
http://arxiv.org/abs/1605.03191
We present a study of the dynamical properties of 125 compact stellar systems (CSSs) in the nearby giant elliptical galaxy NGC5128, using high-resolution spectra (R 26,000) obtained with VLT/FLAMES. Our results provide evidence for a new type of star
Externí odkaz:
http://arxiv.org/abs/1503.04198
Autor:
Brodie, Jean P., Romanowsky, Aaron J., Strader, Jay, Forbes, Duncan A., Foster, Caroline, Jennings, Zachary G., Pastorello, Nicola, Pota, Vincenzo, Usher, Christopher, Blom, Christina, Kader, Justin, Roediger, Joel C., Spitler, Lee R., Villaume, Alexa, Arnold, Jacob A., Kartha, Sreeja S., Woodley, Kristin A.
We introduce and provide the scientific motivation for a wide-field photometric and spectroscopic chemodynamical survey of nearby early-type galaxies (ETGs) and their globular cluster (GC) systems. The SLUGGS (SAGES Legacy Unifying Globulars and Gala
Externí odkaz:
http://arxiv.org/abs/1405.2079
Autor:
Arnold, Jacob A., Romanowsky, Aaron J., Brodie, Jean P., Forbes, Duncan A., Strader, Jay, Spitler, Lee R., Foster, Caroline, Blom, Christina, Kartha, Sreeja S., Pastorello, Nicola, Pota, Vincenzo, Usher, Christopher, Woodley, Kristin A.
Publikováno v:
The Astrophysical Journal, Volume 791, Number 2, 2014 August 20, 80 (27pp)
We present stellar kinematics of 22 nearby early-type galaxies (ETGs), based on two-dimensional (2D) absorption line stellar spectroscopy out to ~2-4 R_e (effective radii), as part of the ongoing SLUGGS Survey. The galaxies span a factor of 20 in int
Externí odkaz:
http://arxiv.org/abs/1310.2607
Autor:
Richer, Harvey B., Goldsbury, Ryan, Heyl, Jeremy, Hurley, Jarrod, Dotter, Aaron, Kalirai, Jason S., Woodley, Kristin A., Fahlman, Gregory G., Rich, R. Michael, Shara, Michael M.
Using deep Hubble Space Telescope imaging, color-magnitude diagrams are constructed for the globular clusters 47 Tuc and NGC 6397. As expected, because of its lower metal abundance, the main sequence of NGC 6397 lies well to the blue of that of 47 Tu
Externí odkaz:
http://arxiv.org/abs/1310.0111
Autor:
Usher, Christopher, Forbes, Duncan A., Spitler, Lee R., Brodie, Jean P., Romanowsky, Aaron J., Strader, Jay, Woodley, Kristin A.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2013, Volume 436, Issue 2, p.1172-1190
We use multi-pointing HST ACS and wide field Subaru Suprime-Cam imaging to study the globular cluster system of the L* elliptical galaxy NGC 4278. We have also obtained a handful of new globular cluster spectra with Keck/DEIMOS. We determine the glob
Externí odkaz:
http://arxiv.org/abs/1308.6585
Autor:
Burke, Mark J., Raychaudhury, Somak, Kraft, Ralph P., Maccarone, Thomas J., Brassington, Nicola J., Hardcastle, Martin J., Kainulainen, Jouni, Woodley, Kristin A., Goodger, Joanna L., Sivakoff, Gregory R., Forman, William R., Jones, Christine, Murray, Stephen S., Birkinshaw, Mark, Croston, Judith H., Evans, Daniel A., Gilfanov, Marat, Jordan, Andres, Sarazin, Craig L., Voss, Rasmus, Worrall, Diana M., Zhang, Zhongli
We present a spectral investigation of X-ray binaries in NGC 5128 (Cen A), using six 100 ks Chandra observations taken over two months in 2007. We divide our sample into thermally and non-thermally dominated states based on the behavior of the fitted
Externí odkaz:
http://arxiv.org/abs/1302.0851
Autor:
Samra, Raminder Singh, Richer, Harvey B., Heyl, Jeremy S., Goldsbury, Ryan, Thanjavur, Karun G., Walker, Gordon A., Woodley, Kristin A.
We have used Gemini North together with the NIRI-ALTAIR adaptive optics imager in the H and K bands to explore the core of the Galactic globular cluster M71 (NGC 6838). We obtained proper motions for 217 stars and have resolved its internal proper mo
Externí odkaz:
http://arxiv.org/abs/1203.5336
Autor:
Burke, Mark J., Raychaudhury, Somak, Kraft, Ralph P., Brassington, Nicola J., Hardcastle, Martin J., Goodger, Joanna L., Sivakoff, Gregory R., Forman, William R., Jones, Christine, Woodley, Kristin A., Murray, Stephen S., Kainulainen, Jouni, Birkinshaw, Mark, Croston, Judith H., Evans, Daniel A., Gilfanov, Marat, Jordan, Andres, Sarazin, Craig L., Voss, Rasmus, Worrall, Diana M., Zhang, Zhongli
Publikováno v:
ApJ, 749, 112, 2012
We report the discovery of a bright X-ray transient, CXOU J132527.6-430023, in the nearby early-type galaxy NGC 5128. The source was first detected over the course of five Chandra observations in 2007, reaching an unabsorbed outburst luminosity of 1-
Externí odkaz:
http://arxiv.org/abs/1202.3149
Autor:
Kalirai, Jason S., Richer, Harvey B., Anderson, Jay, Dotter, Aaron, Fahlman, Gregory G., Hansen, Brad M. S., Hurley, Jarrod, King, Ivan R., Reitzel, David, Rich, R. Michael, Shara, Michael M., Stetson, Peter B., Woodley, Kristin A.
Publikováno v:
2012, AJ, 143, 11
In HST Cycle 17, we imaged the well known globular star cluster 47 Tucanae for 121 orbits using ACS and both the UVIS and IR channels of WFC3 (GO-11677, PI - H. Richer). This unique data set was obtained to address many scientific questions that dema
Externí odkaz:
http://arxiv.org/abs/1112.1426