Zobrazeno 1 - 10
of 62
pro vyhledávání: '"L. Clifton Johnson"'
Autor:
Richard Smith, Avi Patel, Monika D. Soraisam, Puragra Guhathakurta, Pranav Tadepalli, Sally Zhu, Joseph Liu, Léo Girardi, L. Clifton Johnson, Sagnick Mukherjee, Knut A. G. Olsen, Benjamin F. Williams
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 292 (2024)
Variable stars in stellar clusters can offer key constraints on stellar evolution and pulsation models, utilizing estimates of host cluster properties to constrain stellar physical parameters. We present a catalog of 86 luminous (F814W < 19) variable
Externí odkaz:
https://doaj.org/article/4e19e53be2104e618b548b45ffa94cce
Autor:
Tobin M. Wainer, Benjamin F. Williams, L. Clifton Johnson, Daniel R. Weisz, Julianne J. Dalcanton, Anil C. Seth, Andrew Dolphin, Meredith J. Durbin, Eric F. Bell, Zhuo Chen, Puragra Guhathakurta, Eric W. Koch, Christina W. Lindberg, Erik Rosolowsky, Karin M. Sandstrom, Evan D. Skillman, Adam Smercina, Estephani E. TorresVillanueva
Publikováno v:
The Astronomical Journal, Vol 168, Iss 2, p 86 (2024)
We measure the high-mass stellar initial mass function (IMF) from resolved stars in M33 young stellar clusters. Leveraging the Hubble Space Telescope’s high resolving power, we fully model the IMF probabilistically. We first model the optical color
Externí odkaz:
https://doaj.org/article/b50d27320dc149f7a53d1e48a54825cb
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:
Benjamin F. Williams, Meredith Durbin, Dustin Lang, Julianne J. Dalcanton, Andrew E. Dolphin, Adam Smercina, Petia Yanchulova Merica-Jones, Daniel R. Weisz, Eric F. Bell, Karoline M. Gilbert, Léo Girardi, Karl Gordon, Puragra Guhathakurta, L. Clifton Johnson, Tod R. Lauer, Anil Seth, Evan Skillman
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 2, p 48 (2023)
We present the final legacy version of stellar photometry for the Panchromatic Hubble Andromeda Treasury (PHAT) survey. We have reprocessed all of the Hubble Space Telescope Wide Field Camera 3 and Advanced Camera for Surveys near-ultraviolet (F275W,
Externí odkaz:
https://doaj.org/article/27665fadf59b4635b421525bfc2ae60b
Autor:
Daniel R. Weisz, Kristen B. W. McQuinn, Alessandro Savino, Nitya Kallivayalil, Jay Anderson, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Andrew E. Dolphin, Karin M. Sandstrom, Andrew A. Cole, Benjamin F. Williams, Evan D. Skillman, Roger E. Cohen, Max J. B. Newman, Rachael Beaton, Alessandro Bressan, Alberto Bolatto, Michael Boylan-Kolchin, Alyson M. Brooks, James S. Bullock, Charlie Conroy, M. C. Cooper, Julianne J. Dalcanton, Aaron L. Dotter, Tobias K. Fritz, Christopher T. Garling, Mario Gennaro, Karoline M. Gilbert, Léo Girardi, Benjamin D. Johnson, L. Clifton Johnson, Jason S. Kalirai, Evan N. Kirby, Dustin Lang, Paola Marigo, Hannah Richstein, Edward F. Schlafly, Judy Schmidt, Erik J. Tollerud, Jack T. Warfield, Andrew Wetzel
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 1, p 15 (2023)
We present the JWST Resolved Stellar Populations Early Release Science (ERS) program. We obtained 27.5 hr of NIRCam and NIRISS imaging of three targets in the Local Group (Milky Way globular cluster M92, ultrafaint dwarf galaxy Draco II , and star-fo
Externí odkaz:
https://doaj.org/article/748c5c85031c4e0f99d81f3deab03e3f
Autor:
Lindsay R. House, Karl Gebhardt, Keely Finkelstein, Erin Mentuch Cooper, Dustin Davis, Robin Ciardullo, Daniel J Farrow, Steven L. Finkelstein, Caryl Gronwall, Donghui Jeong, L. Clifton Johnson, Chenxu Liu, Benjamin P. Thomas, Gregory Zeimann
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 82 (2023)
We present analysis using a citizen science campaign to improve the cosmological measures from the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX). The goal of HETDEX is to measure the Hubble expansion rate, H ( z ), and angular diameter dis
Externí odkaz:
https://doaj.org/article/735dda8472d74c4dbe4e7d8da098f7c2
Clusters, clouds, and correlations: relating young clusters to giant molecular clouds in M33 and M31
Autor:
Joshua Peltonen, Erik Rosolowsky, L Clifton Johnson, Anil C Seth, Julianne Dalcanton, Eric F Bell, Jonathan Braine, Eric W Koch, Margaret Lazzarini, Adam K Leroy, Evan D Skillman, Adam Smercina, Tobin Wainer, Benjamin F Williams
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 522:6137-6149
We use young clusters and giant molecular clouds (GMCs) in the galaxies M33 and M31 to constrain temporal and spatial scales in the star formation process. In M33, we compare the PHATTER catalogue of 1214 clusters with ages measured via colour-magnit
Autor:
L. Clifton Johnson, Tobin M. Wainer, Estephani E. TorresVillanueva, Anil C. Seth, Benjamin F. Williams, Meredith J. Durbin, Julianne J. Dalcanton, Daniel R. Weisz, Eric F. Bell, Puragra Guhathakurta, Evan Skillman, Adam Smercina
We construct a catalog of star clusters from Hubble Space Telescope images of the inner disk of the Triangulum Galaxy (M33) using image classifications collected by the Local Group Cluster Search, a citizen science project hosted on the Zooniverse pl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::145569cab557bd7aba88a9bee852c489
Autor:
Dennis Zaritsky, Antonela Monachesi, Pol Massana, Thomas J. L. de Boer, A. Katherina Vivas, Robert Blum, Blair C. Conn, Tomás Ruiz-Lara, Amy E. Miller, Matteo Monelli, Ricardo R. Muñoz, Steven R. Majewski, Cameron P. M. Bell, Roeland P. van der Marel, Maria-Rosa L. Cioni, L. Clifton Johnson, David L. Nidever, Carme Gallart, Abhijit Saha, Eric F. Bell, Knut Olsen, Alistair R. Walker, Alex Goater, Julio A. Carballo-Bello, Robert A. Gruendl, Guy S. Stringfellow, Edouard J. Bernard, Antonio Dorta, Nicolas F. Martin, Vadim Rusakov, Noelia E. D. Noël, David Martínez-Delgado, Yumi Choi, J. D. Sakowska, Gurtina Besla
Publikováno v:
Digital.CSIC: Repositorio Institucional del CSIC
Consejo Superior de Investigaciones Científicas (CSIC)
Nidever, D L, Olsen, K, Choi, Y, Ruiz-Lara, T, Miller, A E, Johnson, L C, Bell, C P M, Blum, R D, Cioni, M-R L, Gallart, C, Majewski, S R, Martin, N F, Massana, P, Monachesi, A, Noel, N E D, Sakowska, J D, van der Marel, R P, Walker, A R, Zaritsky, D, Bell, E F, Conn, B C, de Boer, T J L, Gruendl, R A, Monelli, M, Munoz, R R, Saha, A, Katherina Vivas, A, Bernard, E, Besla, G, Carballo-Bello, J A, Dorta, A, Martinez-Delgado, D, Goater, A, Rusakov, V & Stringfellow, G S 2021, ' The Second Data Release of the Survey of the MAgellanic Stellar History (SMASH) ', Astronomical Journal, vol. 161, no. 2, 74 . https://doi.org/10.3847/1538-3881/abceb7
The Astronomical Journal
The Astronomical Journal, American Astronomical Society, 2021, 161 (2), pp.74. ⟨10.3847/1538-3881/abceb7⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
The Astronomical Journal, 161. IOP PUBLISHING LTD
Consejo Superior de Investigaciones Científicas (CSIC)
Nidever, D L, Olsen, K, Choi, Y, Ruiz-Lara, T, Miller, A E, Johnson, L C, Bell, C P M, Blum, R D, Cioni, M-R L, Gallart, C, Majewski, S R, Martin, N F, Massana, P, Monachesi, A, Noel, N E D, Sakowska, J D, van der Marel, R P, Walker, A R, Zaritsky, D, Bell, E F, Conn, B C, de Boer, T J L, Gruendl, R A, Monelli, M, Munoz, R R, Saha, A, Katherina Vivas, A, Bernard, E, Besla, G, Carballo-Bello, J A, Dorta, A, Martinez-Delgado, D, Goater, A, Rusakov, V & Stringfellow, G S 2021, ' The Second Data Release of the Survey of the MAgellanic Stellar History (SMASH) ', Astronomical Journal, vol. 161, no. 2, 74 . https://doi.org/10.3847/1538-3881/abceb7
The Astronomical Journal
The Astronomical Journal, American Astronomical Society, 2021, 161 (2), pp.74. ⟨10.3847/1538-3881/abceb7⟩
Digital.CSIC. Repositorio Institucional del CSIC
instname
The Astronomical Journal, 161. IOP PUBLISHING LTD
Full list of authors: Nidever, David L.; Olsen, Knut; Choi, Yumi; Ruiz-Lara, Tomas; Miller, Amy E.; Johnson, L. Clifton; Bell, Cameron P. M.; Blum, Robert D.; Cioni, Maria-Rosa L.; Gallart, Carme; Majewski, Steven R.; Martin, Nicolas F.; Massana, Pol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bc32bd8d3d88e6bdf81671afd075a40
Autor:
Julia Roman-Duval, Karin Sandstrom, Karl D. Gordon, Andrew E. Dolphin, L. Clifton Johnson, Petia Yanchulova Merica-Jones, Daniel R. Weisz, Julianne J. Dalcanton, Benjamin F. Williams
We examine the three-dimensional structure and dust extinction properties in a ~ 200 pc $\times$ 100 pc region in the southwest bar of the Small Magellanic Cloud (SMC). We model a deep Hubble Space Telescope optical color-magnitude diagram (CMD) of r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::318762bedca8dd14cda6cc4e8854db76
http://arxiv.org/abs/2010.11181
http://arxiv.org/abs/2010.11181