Zobrazeno 1 - 10
of 1 204
pro vyhledávání: '"FARDAL, M."'
Autor:
Savino, A., Weisz, D. R., Skillman, E. D., Dolphin, A., Cole, A. A., Kallivayalil, N., Wetzel, A., Anderson, J., Besla, G., Boylan-Kolchin, M., Brown, T. M., Bullock, J. S., Collins, M. L. M., Cooper, M. C., Deason, A. J., Dotter, A. L., Fardal, M., Ferguson, A. M. N., Fritz, T. K., Geha, M. C., Gilbert, K. M., Guhathakurta, P., Ibata, R., Irwin, M. J., Jeon, M., Kirby, E. N., Lewis, G. F., Mackey, D., Majewski, S. R., Martin, N., McConnachie, A., Patel, E., Rich, R. M., Simon, J. D., Sohn, S. T., Tollerud, E. J., van der Marel, R. P.
We present the lifetime star formation histories (SFHs) for six ultra-faint dwarf (UFD; $M_V>-7.0$, $ 4.9<\log_{10}({M_*(z=0)}/{M_{\odot}})<5.5$) satellite galaxies of M31 based on deep color-magnitude diagrams constructed from \textit{Hubble Space T
Externí odkaz:
http://arxiv.org/abs/2305.13360
Arches and Quintuplet are two young, massive clusters projected near the Galactic Center. To date, studies focused on understanding their origin have been based on proper motions (PMs) derived in the clusters' reference frames and required some assum
Externí odkaz:
http://arxiv.org/abs/2008.01741
Autor:
Bianchini, P., van der Marel, R. P., del Pino, A., Watkins, L. L., Bellini, A., Fardal, M. A., Libralato, M., Sills, A.
Line-of-sight kinematic studies indicate that many Galactic globular clusters have a significant degree of internal rotation. However, three-dimensional kinematics from a combination of proper motions and line-of-sight velocities are needed to unveil
Externí odkaz:
http://arxiv.org/abs/1806.02580
Autor:
Crnojević, D., Ferguson, A. M. N., Irwin, M. J., McConnachie, A. W., Bernard, E. J., Fardal, M. A., Ibata, R. A., Lewis, G. F., Martin, N. F., Navarro, J. F., Noël, N. E. D., Pasetto, S.
We exploit data from the Pan-Andromeda Archaeological Survey (PAndAS) to study the extended structures of M31's dwarf elliptical companions, NGC147 and NGC185. Our wide-field, homogeneous photometry allows to construct deep colour-magnitude diagrams
Externí odkaz:
http://arxiv.org/abs/1409.7065
Autor:
Veljanoski, J., Mackey, A. D., Ferguson, A. M. N., Huxor, A. P., Cote, P., Irwin, M. J., Tanvir, N. R., Penarrubia, J., Bernard, E. J., Fardal, M., Martin, N. F., McConnachie, A., Lewis, G. F., Chapman, S. C., Ibata, R. A., Babul, A.
We present a detailed kinematic analysis of the outer halo globular cluster (GC) system of M31. Our basis for this is a set of new spectroscopic observations for 78 clusters lying at projected distances between Rproj ~20-140 kpc from the M31 centre.
Externí odkaz:
http://arxiv.org/abs/1406.0186
Autor:
Bate, N. F., Conn, A. R., McMonigal, B., Lewis, G. F., Martin, N. F., McConnachie, A. W., Veljanoski, J., Mackey, A. D., Ferguson, A. M. N., Ibata, R. A., Irwin, M. J., Fardal, M., Huxor, A. P., Babul, A.
We undertake the first detailed analysis of the stellar population and spatial properties of a diffuse substructure in the outer halo of M31. The South-West Cloud lies at a projected distance of ~100 kpc from the centre of M31, and extends for at lea
Externí odkaz:
http://arxiv.org/abs/1311.0906
Autor:
Veljanoski, J., Ferguson, A. M. N., Mackey, A. D., Huxor, A. P., Irwin, M. J., Côté, P., Tanvir, N. R., Bernard, E. J., Chapman, S. C., Ibata, R. A., Fardal, M., Lewis, G. F., Martin, N. F., McConnachie, A., Peñarrubia, J.
We present the first kinematic analysis of the far outer halo globular cluster (GC) population in the Local Group galaxy M31. Our sample contains 53 objects with projected radii of ~20-130 kpc, of which 44 have no previous spectroscopic information.
Externí odkaz:
http://arxiv.org/abs/1303.7368
Autor:
Davidge, T. J., McConnachie, A. W., Fardal, M. A., Fliri, J., Valls-Gabaud, D., Chapman, S. C., Lewis, G. F., Rich, R. M.
We examine the star-forming history (SFH) of the M31 disk during the past few hundred Myr. The luminosity functions (LFs) of main sequence stars at distances R_GC > 21 kpc (i.e. > 4 disk scale lengths) are matched by models that assume a constant sta
Externí odkaz:
http://arxiv.org/abs/1203.6081
Autor:
Conn, A. R., Lewis, G. F., Ibata, R. A., Parker, Q. A., Zucker, D. B., McConnachie, A. W., Martin, N. F., Irwin, M. J., Tanvir, N., Fardal, M. A., Ferguson, A. M. N.
Publikováno v:
Approved for publication in the Astrophysical Journal ApJ83086 2011
We present a new approach for identifying the Tip of the Red Giant Branch (TRGB) which, as we show, works robustly even on sparsely populated targets. Moreover, the approach is highly adaptable to the available data for the stellar population under s
Externí odkaz:
http://arxiv.org/abs/1107.3206
Published maps of red giant stars in the halo region of M31 exhibit a giant stellar stream to the south of this galaxy, as well as a giant "shelf" to the northeast of M31's center. Using these maps, we find that there is a fainter shelf of comparable
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609050