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Articles 1 - 18 of 18
Full-Text Articles in Physical Sciences and Mathematics
A Disk Origin For The Monoceros Ring And A13 Stellar Overdensities, Allyson A. Sheffield, Adrian M. Price-Whelan, Anastasios Tzanidakis, Kathryn V. Johnston, Chervin F.P. Laporte, Branimir Sesar
A Disk Origin For The Monoceros Ring And A13 Stellar Overdensities, Allyson A. Sheffield, Adrian M. Price-Whelan, Anastasios Tzanidakis, Kathryn V. Johnston, Chervin F.P. Laporte, Branimir Sesar
Publications and Research
The Monoceros Ring (also known as the Galactic Anticenter Stellar Structure) and A13 are stellar overdensities at estimated heliocentric distances of d ~ 11 kpc and 15 kpc observed at low Galactic latitudes toward the anticenter of our Galaxy. While these overdensities were initially thought to be remnants of a tidally disrupted satellite galaxy, an alternate scenario is that they are composed of stars from the Milky Way (MW) disk kicked out to their current location due to interactions between a satellite galaxy and the disk. To test this scenario, we study the stellar populations of the Monoceros Ring and …
Disk Heating, Galactoseismology, And The Formation Of Stellar Halos, Kathryn V. Johnston, Adrian M. Price-Whelan, Maria Bergemann, Chervin F. P. Laporte, Ting S. Li, Allyson A. Sheffield, Steven R. Majewski, Rachael S. Beaton, Branimir Sesar, Sanjib Sharma
Disk Heating, Galactoseismology, And The Formation Of Stellar Halos, Kathryn V. Johnston, Adrian M. Price-Whelan, Maria Bergemann, Chervin F. P. Laporte, Ting S. Li, Allyson A. Sheffield, Steven R. Majewski, Rachael S. Beaton, Branimir Sesar, Sanjib Sharma
Publications and Research
Deep photometric surveys of the MilkyWay have revealed diffuse structures encircling our Galaxy far beyond the “classical” limits of the stellar disk. This paper reviews results from our own and other observational programs, which together suggest that, despite their extreme positions, the stars in these structures were formed in our Galactic disk. Mounting evidence from recent observations and simulations implies kinematic connections between several of these distinct structures. This suggests the existence of collective disk oscillations that can plausibly be traced all the way to asymmetries seen in the stellar velocity distribution around the Sun. There are multiple interesting implications …
A Re-Interpretation Of The Triangulum-Andromeda Stellar Clouds: A Population Of Halo Stars Kicked Out Of The Galactic Disk, Adrian M. Price-Whelan, Kathryn V. Johnston, Allyson A. Sheffield, Chervin F. P. Laporte, Branimir Sesar
A Re-Interpretation Of The Triangulum-Andromeda Stellar Clouds: A Population Of Halo Stars Kicked Out Of The Galactic Disk, Adrian M. Price-Whelan, Kathryn V. Johnston, Allyson A. Sheffield, Chervin F. P. Laporte, Branimir Sesar
Publications and Research
The Triangulum–Andromeda stellar clouds (TriAnd1 and TriAnd2) are a pair of concentric ring- or shell-like overdensities at large R (≈30 kpc) and Z (≈−10 kpc) in the Galactic halo that are thought to have been formed from the accretion and disruption of a satellite galaxy. This paper critically reexamines this formation scenario by comparing the number ratio of RR Lyrae to M giant stars associated with the TriAnd clouds with other structures in the Galaxy. The current data suggest a stellar population for these overdensities (fRR: MG < 0.38 at 95 per cent confidence) quite unlike any of the known satellites of the Milky Way (fRR: MG ≈ 0.5 for the very largest and f …
1207-3900_Opt_Mage, Jonathan Gagné
1207-3900_Nir_Spex, Jonathan Gagné
2114-2251_Nir_Gnirs, Michael C. Liu
0112+1703_Nir_Gnirs, Michael C. Liu
1112+3548_Nir_Spex, J. Patience
1139-3159_Nir_Spex, Dagny L. Looper
1021-0304_Mir_Irs, Michael C. Cushing
0610-2152b_Nir_Stis, D. A. Golimowski
0415-0935_Opt_Lris, Adam J. Burgasser
0937+2931_Opt_Lris, Adam J. Burgasser
0920+3517_Nir_Spex, Maria Teresa Ruiz
1237+6526_Opt_Lris, Adam J. Burgasser
El Viento De Las Estrellas, Aldemaro Romero Jr.
El Viento De Las Estrellas, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Nubes De Moléculas Orgánicas En El Espacio, Aldemaro Romero Jr.
Nubes De Moléculas Orgánicas En El Espacio, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Cometa Kohoutek: El Espectáculo Fracasado, Aldemaro Romero Jr.
Cometa Kohoutek: El Espectáculo Fracasado, Aldemaro Romero Jr.
Publications and Research
No abstract provided.