Zobrazeno 51 - 60
of 240
pro vyhledávání: '"Pawlowski, Marcel S."'
Autor:
Pawlowski, Marcel S.
According to the hierarchical model of galaxy formation underlying our current understanding of cosmology, the Milky Way (MW) has continued to accrete smaller-sized dwarf galaxies since its formation. Remnants of this process surround the MW as debri
Externí odkaz:
http://arxiv.org/abs/1711.00856
Autor:
Pawlowski, Marcel S.
The Milky Way (MW) is surrounded by a Vast Polar Structure (VPOS) of satellite galaxies, star clusters, and streams. Proper motion measurements for the brightest MW satellites indicate that they are predominantly co-orbiting along the VPOS. This is c
Externí odkaz:
http://arxiv.org/abs/1710.09841
The spatial distribution of satellite galaxies around pairs of galaxies in the Sloan Digital Sky Survey (SDSS) have been found to bulge significantly towards the respective partner. Highly anisotropic, planar distributions of satellite galaxies are i
Externí odkaz:
http://arxiv.org/abs/1710.07639
Autor:
Pawlowski, Marcel S., Dabringhausen, Jörg, Famaey, Benoit, Flores, Hector, Hammer, Francois, Hensler, Gerhard, Ibata, Rodrigo A., Kroupa, Pavel, Lewis, Geraint F., Libeskind, Noam I., McGaugh, Stacy S., Merritt, David, Puech, Mathieu, Yang, Yanbin
The existence of a spatially thin, kinematically coherent Disk of Satellites (DoS) around the Milky Way (MW), is a problem that often garners vivacious debate in the literature or at scientific meetings. One of the most recent incarnations of this wr
Externí odkaz:
http://arxiv.org/abs/1702.06143
We study the link between baryons and dark matter in 240 galaxies with spatially resolved kinematic data. Our sample spans 9 dex in stellar mass and includes all morphological types. We consider (i) 153 late-type galaxies (LTGs; spirals and irregular
Externí odkaz:
http://arxiv.org/abs/1610.08981
Publikováno v:
A&A 595, A119 (2016)
The existence of satellite galaxy planes poses a major challenge for the standard picture of structure formation with non-baryonic dark matter. Recently Tully et al. (2015) reported the discovery of two almost parallel planes in the nearby Cen A grou
Externí odkaz:
http://arxiv.org/abs/1607.04024
The Relation between Stellar and Dynamical Surface Densities in the Central Regions of Disk Galaxies
We use the SPARC (Spitzer Photometry & Accurate Rotation Curves) database to study the relation between the central surface density of stars Sstar and dynamical mass Sdyn in 135 disk galaxies (S0 to dIrr). We find that Sdyn correlates tightly with Ss
Externí odkaz:
http://arxiv.org/abs/1607.02145
Autor:
Bull, Philip, Akrami, Yashar, Adamek, Julian, Baker, Tessa, Bellini, Emilio, Jiménez, Jose Beltrán, Bentivegna, Eloisa, Camera, Stefano, Clesse, Sébastien, Davis, Jonathan H., Di Dio, Enea, Enander, Jonas, Heavens, Alan, Heisenberg, Lavinia, Hu, Bin, Llinares, Claudio, Maartens, Roy, Mörtsell, Edvard, Nadathur, Seshadri, Noller, Johannes, Pasechnik, Roman, Pawlowski, Marcel S., Pereira, Thiago S., Quartin, Miguel, Ricciardone, Angelo, Riemer-Sørensen, Signe, Rinaldi, Massimiliano, Sakstein, Jeremy, Saltas, Ippocratis D., Salzano, Vincenzo, Sawicki, Ignacy, Solomon, Adam R., Spolyar, Douglas, Starkman, Glenn D., Steer, Danièle, Tereno, Ismael, Verde, Licia, Villaescusa-Navarro, Francisco, von Strauss, Mikael, Winther, Hans A.
Publikováno v:
Physics of the Dark Universe 12 (2016) 56-99
Despite its continued observational successes, there is a persistent (and growing) interest in extending cosmology beyond the standard model, $\Lambda$CDM. This is motivated by a range of apparently serious theoretical issues, involving such question
Externí odkaz:
http://arxiv.org/abs/1512.05356
Autor:
Pawlowski, Marcel S.
It is sometimes argued that the uneven sky coverage of the Sloan Digital Sky Survey (SDSS) biases the distribution of satellite galaxies discovered by it to align with the polar plane defined by the 11 brighter, classical Milky Way (MW) satellites. T
Externí odkaz:
http://arxiv.org/abs/1511.05557
We investigate the degree to which the inclusion of baryonic physics can overcome two long-standing problems of the standard cosmological model on galaxy scales: (i) the problem of satellite planes around Local Group galaxies, and (ii) the "too big t
Externí odkaz:
http://arxiv.org/abs/1510.08060