Zobrazeno 1 - 10
of 594
pro vyhledávání: '"West, Michael J."'
Autor:
De Propris, Roberto, West, Michael J., Andrade-Santos, Felipe, Ragone-Figueroa, Cinthia, Rasia, Elena, Forman, William, Jones, Christine, Kipper, Rain, Borgani, Stefano, Lambas, Diego Garcia, Romashkova, Elena A., Patra, Kishore C.
We explore the persistence of the alignment of brightest cluster galaxies (BCGs) with their local environment. We find that a significant fraction of BCGs do not coincide with the centroid of the X-ray gas distribution and/or show peculiar velocities
Externí odkaz:
http://arxiv.org/abs/2010.09617
Publikováno v:
Nature Astronomy 1, 0157 (2017)
A galaxy's orientation is one of its most basic observable properties. Astronomers once assumed that galaxies are randomly oriented in space, however it is now clear that some have preferred orientations with respect to their surroundings. Chief amon
Externí odkaz:
http://arxiv.org/abs/1706.03798
Autor:
Li, Biao, Peng, Eric W., Zhang, Hong-xin, Blakeslee, John P., Côté, Patrick, Ferrarese, Laura, Jordán, Andrés, Liu, Chengze, Mei, Simona, Puzia, Thomas H., Takamiya, Marianne, Trancho, Gelys, West, Michael J.
We present a kinematic analysis of the globular cluster systems and diffuse stellar light of four intermediate luminosity (sub-$L^{\ast}$) early-type galaxies in the Virgo cluster based on Gemini/GMOS data. Our galaxy sample is fainter ($-23.8
Externí odkaz:
http://arxiv.org/abs/1505.05421
Autor:
Vanderbeke, Joachim, De Propris, Roberto, De Rijcke, Sven, Baes, Maarten, West, Michael J., Blakeslee, John P.
We use our Galactic Globular Cluster Catalog (G2C2) photometry for 111 Galactic globular clusters (GC) in g and z, as well as r and i photometry for a subset of 60 GCs and u photometry for 22 GCs, to determine the structural parameters assuming King
Externí odkaz:
http://arxiv.org/abs/1504.04139
Autor:
Vanderbeke, Joachim, West, Michael J., De Propris, Roberto, Peng, Eric W., Blakeslee, John P., Jordán, Andrés, Côté, Patrick, Gregg, Michael, Ferrarese, Laura, Takamiya, Marianne, Baes, Maarten
We present $g^\prime$ and $z^\prime$ aperture photometry for 96 Galactic Globular Clusters, making this the largest homogeneous catalog of photometry for these objects in the SDSS filter system. For a subset of 56 clusters we also provide photometry
Externí odkaz:
http://arxiv.org/abs/1310.4823
Autor:
Vanderbeke, Joachim, West, Michael J., De Propris, Roberto, Peng, Eric W., Blakeslee, John P., Jordán, Andrés, Côté, Patrick, Gregg, Michael, Ferrarese, Laura, Takamiya, Marianne, Baes, Maarten
We use our integrated SDSS photometry for 96 globular clusters in $g$ and $z$, as well as $r$ and $i$ photometry for a subset of 56 clusters, to derive the integrated colour-metallicity relation (CMR) for Galactic globular clusters. We compare this r
Externí odkaz:
http://arxiv.org/abs/1310.4829
Autor:
West, Michael J.
In Moby Dick, Herman Melville wondered how - or what - whales see with eyes on opposite sides of their heads. "It is plain that he can never see an object which is exactly ahead... Is his brain so much more comprehensive, combining and subtle than ma
Externí odkaz:
http://arxiv.org/abs/1309.2722
Autor:
Wang, Qiushi, Peng, Eric W., Blakeslee, John P., Côté, Patrick, Ferrarese, Laura, Jordán, Andrés, Mei, Simona, West, Michael J.
We study the azimuthal distribution of globular clusters (GCs) in early-type galaxies and compare them to their host galaxies using data from the ACS Virgo Cluster Survey. We find that in host galaxies with visible elongation (epsilon > 0.2) and inte
Externí odkaz:
http://arxiv.org/abs/1304.0824
Autor:
Turner, Monica L., Cote, Patrick, Ferrarese, Laura, Jordan, Andres, Blakeslee, John P., Mei, Simona, Peng, Eric W., West, Michael J.
The Advanced Camera for Surveys (ACS) Fornax Cluster Survey is a Hubble Space Telescope program to image 43 early-type galaxies in the Fornax cluster, using the F475W and F850LP bandpasses of the ACS. We employ both 1D and 2D techniques to characteri
Externí odkaz:
http://arxiv.org/abs/1208.0338
Autor:
Hilton, Matt, Romer, A. Kathy, Kay, Scott T., Mehrtens, Nicola, Lloyd-Davies, E. J., Thomas, Peter A., Short, Chris J., Mayers, Julian A., Rooney, Philip J., Stott, John P., Collins, Chris A., Harrison, Craig D., Hoyle, Ben, Liddle, Andrew R., Mann, Robert G., Miller, Christopher J., Sahlen, Martin, Viana, Pedro T. P., Davidson, Michael, Hosmer, Mark, Nichol, Robert C., Sabirli, Kivanc, Stanford, S. A., West, Michael J.
We measure the evolution of the X-ray luminosity-temperature (L_X-T) relation since z~1.5 using a sample of 211 serendipitously detected galaxy clusters with spectroscopic redshifts drawn from the XMM Cluster Survey first data release (XCS-DR1). This
Externí odkaz:
http://arxiv.org/abs/1205.5570