Zobrazeno 1 - 10
of 525
pro vyhledávání: '"Blakeslee, John P"'
Autor:
Anand, Gagandeep S., Tully, R. Brent, Cohen, Yotam, Shaya, Edward J., Makarov, Dmitry I., Makarova, Lidia N., Chazov, Maksim I., Blakeslee, John P., Cantiello, Michele, Jensen, Joseph B., Kourkchi, Ehsan, Raimondo, Gabriella
The Virgo Cluster is the nearest substantial cluster of galaxies to the Milky Way and a cornerstone of the extragalactic distance scale. Here, we present JWST/NIRCam observations that simultaneously cover the cores and halos of ten galaxies in and ar
Externí odkaz:
http://arxiv.org/abs/2408.16810
Autor:
Anand, Gagandeep S., Tully, R. Brent, Cohen, Yotam, Makarov, Dmitry I., Makarova, Lidia N., Jensen, Joseph B., Blakeslee, John P., Cantiello, Michele, Kourkchi, Ehsan, Raimondo, Gabriella
Differences between the local value of the Hubble constant measured via the distance ladder versus the value inferred from the cosmic microwave background with the assumption of the standard $\Lambda$CDM model have reached over 5$\sigma$ significance
Externí odkaz:
http://arxiv.org/abs/2405.03743
Autor:
Cantiello, Michele, Blakeslee, John P., Côté, Patrick, Raimondo, Gabriella, Cuillandre, Jean-Charles, Durrell, Patrick R., Gwyn, Stephen, Hazra, Nandini, Peng, Eric W., Roediger, Joel C., Sánchez-Janssen, Rúben, Kurzner, Max
The surface brightness fluctuation (SBF) method is a robust and efficient way of measuring distances to galaxies containing evolved stellar populations. Although many recent applications of the method have used space-based imaging, SBF remains a powe
Externí odkaz:
http://arxiv.org/abs/2403.16235
Autor:
Zanatta, Emilio J. B., Sanchéz-Janssen, Ruben, de Souza, Rafael S., Chies-Santos, Ana L., Blakeslee, John P.
Nuclear star clusters (NSCs) are dense star clusters located at the centre of galaxies spanning a wide range of masses and morphologies. Analysing NSC occupation statistics in different environments provides an invaluable window into investigating ea
Externí odkaz:
http://arxiv.org/abs/2403.14847
Autor:
Lim, Sungsoon, Peng, Eric W., Côté, Patrick, Ferrarese, Laura, Roediger, Joel C., Liu, Chengze, Spengler, Chelsea, Sola, Elisabeth, Duc, Pierre-Alain, Sales, Laura V., Blakeslee, John P., Cuillandre, Jean-Charles, Durrell, Patrick R., Emsellem, Eric, Gwyn, Stephen D. J., Lançon, Ariane, Marleau, Francine R., Mihos, J. Christopher, Müller, Oliver, Puzia, Thomas H., Sánchez-Janssen, Rubén
We study the size and structure of globular clusters (GC) systems of 118 early-type galaxies from the NGVS, MATLAS, and ACSVCS surveys. Fitting S\'ersic profiles, we investigate the relationship between effective radii of GC systems ($R_{e, \rm gc}$)
Externí odkaz:
http://arxiv.org/abs/2403.09926
Autor:
Wang, Kaixiang, Peng, Eric W., Liu, Chengze, Mihos, J. Christopher, Côté, Patrick, Ferrarese, Laura, Taylor, Matthew A., Blakeslee, John P., Cuillandre, Jean-Charles, Duc, Pierre-Alain, Guhathakurta, Puragra, Gwyn, Stephen, Ko, Youkyung, Lançon, Ariane, Lim, Sungsoon, MacArthur, Lauren A., Puzia, Thomas, Roediger, Joel, Sales, Laura V., Sánchez-Janssen, Rubén, Spengler, Chelsea, Toloba, Elisa, Zhang, Hongxin, Zhu, Mingcheng
Publikováno v:
Nature 623 (2023) 296-300
Systematic studies have revealed hundreds of ultra-compact dwarf galaxies (UCDs) in the nearby Universe. With half-light radii $r_h$ of approximately 10-100 parsecs and stellar masses $M_*$ $\approx$ $10^6-10^8$ solar masses, UCDs are among the dense
Externí odkaz:
http://arxiv.org/abs/2311.05448
Dwarf galaxies are important tracers of small-scale cosmological structure, yet much of our knowledge about these systems comes from the limited sample of dwarf galaxies within the Local Group. To make a comprehensive inventory of dwarf populations i
Externí odkaz:
http://arxiv.org/abs/2310.17085
Autor:
Cantiello, Michele, Blakeslee, John P.
The Surface Brightness Fluctuation (SBF) method is a powerful tool for determining distances to early-type galaxies. The method measures the intrinsic variance in a galaxy's surface brightness distribution to determine its distance with an accuracy o
Externí odkaz:
http://arxiv.org/abs/2307.03116
We present Hubble Space Telescope photometry in optical (F475X) and near-infrared (F110W) bands of the globular cluster (GC) systems of the inner halos of a sample of 15 massive elliptical galaxies. The targets are selected from the volume-limited MA
Externí odkaz:
http://arxiv.org/abs/2307.01863
Autor:
Blakeslee, John P., Cantiello, Michele, Hudson, Michael J., Ferrarese, Laura, Hazra, Nandini, Jensen, Joseph B., Peng, Eric W., Raimondo, Gabriella
The extragalactic distance scale is fundamental to our understanding of astrophysics and cosmology. In recent years, the surface brightness fluctuation (SBF) method, applied in the near-IR, has proven especially powerful for measuring galaxy distance
Externí odkaz:
http://arxiv.org/abs/2306.15170