Zobrazeno 1 - 10
of 3 306
pro vyhledávání: '"Sohn, S."'
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
Autor:
Libralato, M., Bellini, A., van der Marel, R. P., Anderson, J., Sohn, S. T., Watkins, L. L., Alderson, L., Allen, N., Clampin, M., Glidden, A., Goyal, J., Hoch, K., Huang, J., Kammerer, J., Lewis, N. K., Lin, Z., Long, D., Louie, D., MacDonald, R. J., Mountain, M., Peña-Guerrero, M., Perrin, M. D., Pueyo, L., Rebollido, I., Rickman, E., Seager, S., Stevenson, K. B., Valenti, J. A., Valentine, D., Wakeford, H. R.
We develop and disseminate effective point-spread functions and geometric-distortion solutions for high-precision astrometry and photometry with the JWST NIRISS instrument. We correct field dependencies and detector effects, and assess the quality an
Externí odkaz:
http://arxiv.org/abs/2303.00009
Autor:
Libralato, M., Bellini, A., Vesperini, E., Piotto, G., Milone, A. P., van der Marel, R. P., Anderson, J., Aparicio, A., Barbuy, B., Bedin, L. R., Borsato, L., Cassisi, S., Dalessandro, E., Ferraro, F. R., King, I. R., Lanzoni, B., Nardiello, D., Ortolani, S., Sarajedini, A., Sohn, S. T.
A number of studies based on data collected by the $\textit{Hubble Space Telescope}$ ($\textit{HST}$) GO-13297 program "HST Legacy Survey of Galactic Globular Clusters: Shedding UV Light on Their Populations and Formation" have investigated the photo
Externí odkaz:
http://arxiv.org/abs/2206.09924
Publikováno v:
A&A 672, A131 (2023)
Context: A variety of formation models for dwarf spheroidal (dSph) galaxies have been proposed in the literature, but generally they have not been quantitatively compared with observations. Aims: We search for chemodynamical patterns in our observati
Externí odkaz:
http://arxiv.org/abs/2201.07304
Autor:
Raso, S., Libralato, M., Bellini, A., Ferraro, F. R., Lanzoni, B., Cadelano, M., Pallanca, C., Dalessandro, E., Piotto, G., Anderson, J., Sohn, S. T.
We constructed a Hubble Space Telescope (HST) astro-photometric catalog of the central region of the Galactic globular cluster NGC 1261. This catalog, complemented with Gaia DR2 data sampling the external regions, has been used to estimate the struct
Externí odkaz:
http://arxiv.org/abs/2004.09540
Autor:
Gilbert, Karoline M., Tollerud, Erik J., Anderson, Jay, Beaton, Rachael L., Bell, Eric F., Brooks, Alyson, Brown, Thomas M., Bullock, James, Carlin, Jeffrey L., Collins, Michelle, Cooper, Andrew, Crnojevic, Denija, Dalcanton, Julianne, del Pino, Andres, D'Souza, Richard, Escala, Ivanna, Fardal, Mark, Font, Andreea, Geha, Marla, Guhathakurta, Puragra, Kirby, Evan, Lewis, Geraint F., Marshall, Jennifer L., Martin, Nicolas F., McQuinn, Kristen, Monachesi, Antonela, Patel, Ekta, Peeples, Molly S., Pillepich, Annalisa, Quirk, Amanda C. N., Rich, R. Michael, Sohn, S. Tony, Ting, Yuan-Sen, van der Marel, Roeland P., Wetzel, Andrew, Williams, Benjamin F., Wojno, Jennifer
The Great Andromeda Galaxy (M31) is the nexus of the near-far galaxy evolution connection and a principal data point for near-field cosmology. Due to its proximity (780 kpc), M31 can be resolved into individual stars like the Milky Way (MW). Unlike t
Externí odkaz:
http://arxiv.org/abs/1904.01074
Autor:
Sanderson, Robyn E., Carlin, Jeffrey L., Cunningham, Emily C., Garavito-Camargo, Nicolas, Guhathakurta, Puragra, Johnston, Kathryn V., Laporte, Chervin F. P., Li, Ting S., Sohn, S. Tony
Studying our Galaxy, the Milky Way (MW), gives us a close-up view of the interplay between cosmology, dark matter, and galaxy formation. In the next decade our understanding of the MW's dynamics, stellar populations, and structure will undergo a revo
Externí odkaz:
http://arxiv.org/abs/1903.07641
Autor:
Bellini, A., Libralato, M., Anderson, J., Bennett, D., Calamida, A., Casertano, S., Fall, S. M., Gaudi, B. S., Guhathakurta, P., Ho, S., Lu, J., Malhotra, S., Melchior, P., Nelan, E., Rhodes, J., Sanderson, R. E., Shao, M., Sohn, S. T., Vesperini, E., van der Marel, R. P.
The outer regions of globular clusters can enable us to answer many fundamental questions concerning issues ranging from the formation and evolution of clusters and their multiple stellar populations to the study of stars near and beyond the hydrogen
Externí odkaz:
http://arxiv.org/abs/1903.05085
Autor:
Koposov, S. E., Belokurov, V., Li, T. S., Mateu, C., Erkal, D., Grillmair, C. J., Hendel, D., Price-Whelan, A. M., Laporte, C. F. P., Hawkins, K., Sohn, S. T., del Pino, A., Evans, N. W., Slater, C. T., Kallivayalil, N., Navarro, J. F.
We use astrometry, broad-band photometry and variability information from the Data Release 2 of ESA's Gaia mission (GDR2) to identify members of the Orphan Stream (OS) across the whole sky. The stream is traced above and below the celestial equator a
Externí odkaz:
http://arxiv.org/abs/1812.08172
Autor:
Erkal, D., Belokurov, V., Laporte, C. F. P., Koposov, S. E., Li, T. S., Grillmair, C. J., Kallivayalil, N., Price-Whelan, A. M., Evans, N. W., Hawkins, K., Hendel, D., Mateu, C., Navarro, J. F., del Pino, A., Slater, C. T., Sohn, S. T.
In a companion paper by Koposov et al., RR Lyrae from \textit{Gaia} Data Release 2 are used to demonstrate that stars in the Orphan stream have velocity vectors significantly misaligned with the stream track, suggesting that it has received a large g
Externí odkaz:
http://arxiv.org/abs/1812.08192