Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Andrew B. Pace"'
Autor:
Joshua D. Simon, Ting S. Li, Alexander P. Ji, Andrew B. Pace, Terese T. Hansen, William Cerny, Ivanna Escala, Sergey E. Koposov, Alex Drlica-Wagner, Sidney Mau, Evan N. Kirby
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 256 (2024)
We present spectroscopy of the ultra-faint Milky Way satellites Eridanus III (Eri III) and DELVE 1. We identify eight member stars in each satellite and place nonconstraining upper limits on their velocity and metallicity dispersions. The brightest s
Externí odkaz:
https://doaj.org/article/a4d98e944fcf4645b7c1768a57e3b64f
Autor:
Matthew G. Walker, Nelson Caldwell, Mario Mateo, Edward W. Olszewski, Andrew B. Pace, John I. Bailey III, Sergey E. Koposov, Ian U. Roederer
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 1, p 19 (2023)
We present spectroscopic data for 16,369 stellar targets within and/or toward 38 dwarf spheroidal galaxies and faint star clusters within the Milky Way halo environment. All spectra come from observations with the multiobject, fiber-fed echelle spect
Externí odkaz:
https://doaj.org/article/ecca77af27fd4bb49ee878a43e2efbc1
Autor:
Ian U. Roederer, Andrew B. Pace, Vinicius M. Placco, Nelson Caldwell, Sergey E. Koposov, Mario Mateo, Edward W. Olszewski, Matthew G. Walker
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 55 (2023)
We present the stellar parameters and chemical abundances of 30 elements for five stars located at large radii (3.5–10.7 times the half-light radius) in the Sextans dwarf spheroidal galaxy. We selected these stars using proper motions, radial veloc
Externí odkaz:
https://doaj.org/article/15c0d5e66c7c413cb6490f362b797be0
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 167 (2023)
In this paper, we present a chemical and kinematic analysis of two ultrafaint dwarf galaxies (UFDs), Aquarius II (Aqu II) and Boötes II (Boo II), using Magellan/IMACS spectroscopy. We present the largest sample of member stars for Boo II (12), and t
Externí odkaz:
https://doaj.org/article/16df80dd259c4b649ad28f1a0156d6d7
Autor:
Nora Shipp, Nondh Panithanpaisal, Lina Necib, Robyn Sanderson, Denis Erkal, Ting S. Li, Isaiah B. Santistevan, Andrew Wetzel, Lara R. Cullinane, Alexander P. Ji, Sergey E. Koposov, Kyler Kuehn, Geraint F. Lewis, Andrew B. Pace, Daniel B. Zucker, Joss Bland-Hawthorn, Emily C. Cunningham, Stacy Y. Kim, Sophia Lilleengen, Jorge Moreno, Sanjib Sharma, S Collaboration & FIRE Collaboration
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 44 (2023)
We present the first detailed comparison of populations of dwarf galaxy stellar streams in cosmological simulations and the Milky Way. In particular, we compare streams identified around 13 Milky Way analogs in the FIRE-2 simulations to streams obser
Externí odkaz:
https://doaj.org/article/115a7d1e312e40538e7b8b7eeb754780
Autor:
Joshua D. Simon, Thomas M. Brown, Burçin Mutlu-Pakdil, Alexander P. Ji, Alex Drlica-Wagner, Roberto J. Avila, Clara E. Martínez-Vázquez, Ting S. Li, Eduardo Balbinot, Keith Bechtol, Anna Frebel, Marla Geha, Terese T. Hansen, David J. James, Andrew B. Pace, M. Aguena, O. Alves, F. Andrade-Oliveira, J. Annis, D. Bacon, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, J. De Vicente, S. Desai, P. Doel, S. Everett, I. Ferrero, J. Frieman, J. García-Bellido, M. Gatti, D. W. Gerdes, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, K. Kuehn, N. Kuropatkin, J. L. Marshall, J. Mena-Fernández, R. Miquel, A. Palmese, F. Paz-Chinchón, M. E. S. Pereira, A. Pieres, A. A. Plazas Malagón, M. Raveri, M. Rodriguez-Monroy, E. Sanchez, B. Santiago, V. Scarpine, I. Sevilla-Noarbe, M. Smith, E. Suchyta, M. E. C. Swanson, G. Tarle, C. To, M. Vincenzi, N. Weaverdyck, R. D. Wilkinson
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 43 (2023)
The ultra-faint dwarf galaxy Reticulum II (Ret II) exhibits a unique chemical evolution history, with ${72}_{-12}^{+10}$ % of its stars strongly enhanced in r -process elements. We present deep Hubble Space Telescope photometry of Ret II and analyze
Externí odkaz:
https://doaj.org/article/dbc6ac7f8802402a8f17fb3f21479413
Autor:
Erin Sheldon, M. E. C. Swanson, Alex Drlica-Wagner, R. L. C. Ogando, Enrique Gaztanaga, Andrew B. Pace, L. Girardi, M. Carrasco Kind, David J. Brooks, E. Balbinot, G. Tarle, G. Gutierrez, K. Bechtol, Adriano Pieres, Jennifer L. Marshall, B. Flaugher, Vinu Vikram, Marcelle Soares-Santos, E. Suchyta, A. Carnero Rosell, Juan Garcia-Bellido, E. Bertin, A. A. Plazas, Tenglin Li, Santiago Avila, Daniel Thomas, I. Sevilla-Noarbe, M. dal Ponte, K. Honscheid, J. Gschwend, N. Kuropatkin, Flavia Sobreira, Ramon Miquel, L. N. da Costa, Martin Groenewegen, S. Desai, H. T. Diehl, D. L. Burke, David J. James, Basilio X. Santiago, A. R. Walker, Pablo Fosalba, E. J. Sanchez, Robert A. Gruendl, J. De Vicente, Adam Amara, Kyler Kuehn, Tim Eifler, M. Smith, Daniel Gruen, D. W. Gerdes, D. L. Hollowood, S. Serrano, J. Carretero, Josh Frieman, M. A. G. Maia
Publikováno v:
DES Collaboration, Amara, A, Avila, S & Thomas, D 2020, ' Modelling the Milky Way-I. Method and first results fitting the thick disk and halo with DES-Y3 data ', Monthly Notices of the Royal Astronomical Society, vol. 497, no. 2, pp. 1547-1562 . https://doi.org/10.1093/mnras/staa1980
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 497 (2), pp.1547-1562. ⟨10.1093/mnras/staa1980⟩
Monthly Notices of the Royal Astronomical Society, 497(2), 1547-1562. Oxford University Press
Digital.CSIC. Repositorio Institucional del CSIC
instname
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 497 (2), pp.1547-1562. ⟨10.1093/mnras/staa1980⟩
Monthly Notices of the Royal Astronomical Society, 497(2), 1547-1562. Oxford University Press
Digital.CSIC. Repositorio Institucional del CSIC
instname
Full author list: A Pieres, L Girardi, E Balbinot, B Santiago, L N da Costa, A Carnero Rosell, A B Pace, K Bechtol, M A T Groenewegen, A Drlica-Wagner, T S Li, M A G Maia, R L C Ogando, M dal Ponte, H T Diehl, A Amara, S Avila, E Bertin, D Brooks, D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::706b718f49cfaf382d99aa723f6bd377
https://doi.org/10.1093/mnras/staa1980
https://doi.org/10.1093/mnras/staa1980
Autor:
Nora Shipp, Nondh Panithanpaisal, Lina Necib, Robyn Sanderson, Denis Erkal, Ting S. Li, Isaiah B. Santistevan, Andrew Wetzel, Lara R. Cullinane, Alexander P. Ji, Sergey E. Koposov, Kyler Kuehn, Geraint F. Lewis, Andrew B. Pace, Daniel B. Zucker, Joss Bland-Hawthorn, Emily C. Cunningham, Stacy Y. Kim, Sophia Lilleengen, Jorge Moreno, Sanjib Sharma
Publikováno v:
Shipp, N, Panithanpaisal, N, Necib, L, Sanderson, R, Erkal, D, Li, T S, Santistevan, I B, Wetzel, A, Cullinane, L R, Ji, A P, Koposov, S E, Kuehn, K, Lewis, G F, Pace, A B, Zucker, D B, Bland-Hawthorn, J, Cunningham, E C, Kim, S Y, Lilleengen, S, Moreno, J & Sharma, S 2023, ' Streams on FIRE: Populations of Detectable Stellar Streams in the Milky Way and FIRE ', Astrophysical Journal, vol. 949, no. 2, 44, pp. 1-19 . https://doi.org/10.3847/1538-4357/acc582
We present the first detailed study comparing the populations of stellar streams in cosmological simulations to observed Milky Way dwarf galaxy streams. In particular, we compare streams identified around Milky Way analogs in the FIRE-2 simulations t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::933d3c26fef932e209b1dbd9d6f0695f
We combine Gaia EDR3 astrometry with accurate photometry and utilize a probabilistic mixture model to measure the systemic proper motion of 52 dwarf spheroidal (dSph) satellite galaxies of the Milky Way (MW). For the 46 dSphs with literature line-of-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff9803fdcb3fae6c656173ff02863425
We use Gaia EDR3 data to identify stars associated with six classical dwarf spheroidals (Draco, Ursa Minor, Sextans, Sculptor, Fornax, Carina) at their outermost radii, beyond their nominal King stellar limiting radius. For all of the dSphs examined,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8299bba16b5c6b993feed497f0833a92
http://arxiv.org/abs/2111.08737
http://arxiv.org/abs/2111.08737