Zobrazeno 1 - 10
of 353
pro vyhledávání: '"Michael Boylan"'
Autor:
Sal Wanying Fu, Daniel R. Weisz, Else Starkenburg, Nicolas Martin, Michelle L. M. Collins, Alessandro Savino, Michael Boylan-Kolchin, Patrick Côté, Andrew E. Dolphin, Nicolas Longeard, Mario L. Mateo, Francisco J. Mercado, Nathan R. Sandford, Evan D. Skillman
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 2 (2024)
We present ∼300 stellar metallicity measurements in two faint M31 dwarf galaxies, Andromeda XVI ( M _V = −7.5) and Andromeda XXVIII ( M _V = –8.8), derived using metallicity-sensitive calcium H and K narrowband Hubble Space Telescope imaging. T
Externí odkaz:
https://doaj.org/article/f94c675453d84e2e8dacaf2092a9e26d
Autor:
Katherine Chworowsky, Steven L. Finkelstein, Michael Boylan-Kolchin, Elizabeth J. McGrath, Kartheik G. Iyer, Casey Papovich, Mark Dickinson, Anthony J. Taylor, L. Y. Aaron Yung, Pablo Arrabal Haro, Micaela B. Bagley, Bren E. Backhaus, Rachana Bhatawdekar, Yingjie Cheng, Nikko J. Cleri, Justin W. Cole, M. C. Cooper, Luca Costantin, Avishai Dekel, Maximilien Franco, Seiji Fujimoto, Christopher C. Hayward, Benne W. Holwerda, Marc Huertas-Company, Michaela Hirschmann, Taylor A. Hutchison, Anton M. Koekemoer, Rebecca L. Larson, Zhaozhou Li, Arianna S. Long, Ray A. Lucas, Nor Pirzkal, Giulia Rodighiero, Rachel S. Somerville, Brittany N. Vanderhoof, Alexander de la Vega, Stephen M. Wilkins, Guang Yang, Jorge A. Zavala
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 113 (2024)
We analyze the evolution of massive (log _10 [ M _⋆ / M _⊙ ] > 10) galaxies at z ∼ 1–4 selected from JWST Cosmic Evolution Early Release Survey (CEERS). We infer the physical properties of all galaxies in the CEERS NIRCam imaging through spec
Externí odkaz:
https://doaj.org/article/0ca5f0200ff646b5be2ed208b358a4c4
Autor:
Xuejian Shen, Philip F. Hopkins, Lina Necib, Fangzhou Jiang, Michael Boylan-Kolchin, Andrew Wetzel
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 131 (2024)
We analyze the first cosmological baryonic zoom-in simulations of galaxies in dissipative self-interacting dark matter (dSIDM). The simulations utilize the FIRE-2 galaxy formation physics with the inclusion of dissipative dark matter self-interaction
Externí odkaz:
https://doaj.org/article/6871cd81a7914992a63ae676e01700ee
Autor:
Caitlin M. Casey, Hollis B. Akins, Marko Shuntov, Olivier Ilbert, Louise Paquereau, Maximilien Franco, Christopher C. Hayward, Steven L. Finkelstein, Michael Boylan-Kolchin, Brant E. Robertson, Natalie Allen, Malte Brinch, Olivia R. Cooper, Xuheng Ding, Nicole E. Drakos, Andreas L. Faisst, Seiji Fujimoto, Steven Gillman, Santosh Harish, Michaela Hirschmann, Shuowen Jin, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Vasily Kokorev, Daizhong Liu, Arianna S. Long, Georgios Magdis, Claudia Maraston, Crystal L. Martin, Henry Joy McCracken, Jed McKinney, Bahram Mobasher, Jason Rhodes, R. Michael Rich, David B. Sanders, John D. Silverman, Sune Toft, Aswin P. Vijayan, John R. Weaver, Stephen M. Wilkins, Lilan Yang, Jorge A. Zavala
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 98 (2024)
We report the discovery of 15 exceptionally luminous 10 ≲ z ≲ 14 candidate galaxies discovered in the first 0.28 deg ^2 of JWST/NIRCam imaging from the COSMOS-Web survey. These sources span rest-frame UV magnitudes of −20.5 > M _UV > −22, and
Externí odkaz:
https://doaj.org/article/02ccfe9f0e7c43d784be1002d99bbdf2
Autor:
Sal Wanying Fu, Daniel R. Weisz, Else Starkenburg, Nicolas Martin, Francisco J. Mercado, Alessandro Savino, Michael Boylan-Kolchin, Patrick Côté, Andrew E. Dolphin, Nicolas Longeard, Mario L. Mateo, Jenna Samuel, Nathan R. Sandford
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 36 (2024)
We measure the metallicities of 374 red giant branch (RGB) stars in the isolated, quenched dwarf galaxy Tucana using Hubble Space Telescope narrowband (F395N) calcium H and K imaging. Our sample is a factor of ∼7 larger than what is available from
Externí odkaz:
https://doaj.org/article/63df93428e0a441985a4eee144307732
Autor:
Daniel R. Weisz, Andrew E. Dolphin, Alessandro Savino, Kristen B. W. McQuinn, Max J. B. Newman, Benjamin F. Williams, Nitya Kallivayalil, Jay Anderson, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Karin M. Sandstrom, Andrew A. Cole, Jack T. Warfield, Evan D. Skillman, Roger E. Cohen, Rachael Beaton, Alessandro Bressan, Alberto Bolatto, Michael Boylan-Kolchin, Alyson M. Brooks, James S. Bullock, Charlie Conroy, Michael C. Cooper, Julianne J. Dalcanton, Aaron L. Dotter, Tobias K. Fritz, Christopher T. Garling, Mario Gennaro, Karoline M. Gilbert, Leo Girardi, Benjamin D. Johnson, L. Clifton Johnson, Jason Kalirai, Evan N. Kirby, Dustin Lang, Paola Marigo, Hannah Richstein, Edward F. Schlafly, Erik J. Tollerud, Andrew Wetzel
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 2, p 47 (2024)
We present NIRCam and NIRISS modules for DOLPHOT, a widely used crowded-field stellar photometry package. We describe details of the modules including pixel masking, astrometric alignment, star finding, photometry, catalog creation, and artificial st
Externí odkaz:
https://doaj.org/article/c2942cef14c8474da98e78e9ba5f8bf7
Autor:
Kristen. B. W. McQuinn, Max J. B. Newman, Alessandro Savino, Andrew E. Dolphin, Daniel R. Weisz, Benjamin F. Williams, Martha L. Boyer, Roger E. Cohen, Matteo Correnti, Andrew A. Cole, Marla C. Geha, Mario Gennaro, Nitya Kallivayalil, Karin M. Sandstrom, Evan D. Skillman, Jay Anderson, Alberto Bolatto, Michael Boylan-Kolchin, Christopher T. Garling, Karoline M. Gilbert, Léo Girardi, Jason S. Kalirai, Alessandro Mazzi, Giada Pastorelli, Hannah Richstein, Jack T. Warfield
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 16 (2024)
We present the first star formation history (SFH) and age–metallicity relation (AMR) derived from resolved stellar populations imaged with the JWST NIRCam instrument. The target is the Local Group star-forming galaxy WLM at 970 kpc. The depth of th
Externí odkaz:
https://doaj.org/article/dfa91b9ef5ab4d4f8277954633ac7c7b
Autor:
Yuta Koui, Takako Ideue, Michael Boylan, Matthew J. Anderson, Motomi Osato, Toshio Suda, Tomomasa Yokomizo, Yoh-suke Mukouyama
Publikováno v:
Biology Open, Vol 11, Iss 9 (2022)
Recent genetic lineage tracing studies reveal heterogeneous origins of vascular endothelial cells and pericytes in the developing brain vasculature, despite classical experimental evidence for a mesodermal origin. Here we provide evidence through a g
Externí odkaz:
https://doaj.org/article/538af6514a024daf9f51d2fd68a1b69d
Autor:
Jay Baptista, Robyn Sanderson, Dan Huber, Andrew Wetzel, Omid Sameie, Michael Boylan-Kolchin, Jeremy Bailin, Philip F. Hopkins, Claude-André Faucher-Giguere, Sukanya Chakrabarti, Drona Vargya, Nondh Panithanpaisal, Arpit Arora, Emily Cunningham
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 44 (2023)
The shape and orientation of dark matter (DM) halos are sensitive to the microphysics of the DM particles, yet in many mass models, the symmetry axes of the Milky Way’s DM halo are often assumed to be aligned with the symmetry axes of the stellar d
Externí odkaz:
https://doaj.org/article/282059dc446c4407bba32fe7a3c84f63
Autor:
Sal Wanying Fu, Daniel R. Weisz, Else Starkenburg, Nicolas Martin, Alessandro Savino, Michael Boylan-Kolchin, Patrick Côté, Andrew E. Dolphin, Alexander P. Ji, Nicolas Longeard, Mario L. Mateo, Ekta Patel, Nathan R. Sandford
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 167 (2023)
We present uniformly measured stellar metallicities of 463 stars in 13 Milky Way (MW) ultra-faint dwarf galaxies (UFDs; M _V = −7.1 to −0.8) using narrowband CaHK (F395N) imaging taken with the Hubble Space Telescope. This represents the largest
Externí odkaz:
https://doaj.org/article/f9b56c7f0f864cd88b4367c9f29f0267