Zobrazeno 1 - 10
of 956
pro vyhledávání: '"A. M. MacRi"'
Autor:
Adam G. Riess, Gagandeep S. Anand, Wenlong Yuan, Stefano Casertano, Andrew Dolphin, Lucas M. Macri, Louise Breuval, Dan Scolnic, Marshall Perrin, Richard I. Anderson
Publikováno v:
The Astrophysical Journal Letters, Vol 962, Iss 1, p L17 (2024)
We present high-definition observations with the James Webb Space Telescope (JWST) of >1000 Cepheids in a geometric anchor of the distance ladder, NGC 4258, and in five hosts of eight Type Ia supernovae, a far greater sample than previous studies wit
Externí odkaz:
https://doaj.org/article/ebfc6fa6fc164a82807bbd8f03dc4a59
Autor:
Alaina M. Macri, Deborah L. Wells
Publikováno v:
Journal of Zoological and Botanical Gardens, Vol 4, Iss 2, Pp 476-489 (2023)
One of the main goals of zoos and aquariums (hereafter ‘zoos’) is to connect visitors with animals. Unfortunately, COVID-19 lockdowns resulted in these organizations closing around the globe, making this goal exceedingly difficult. During lockdow
Externí odkaz:
https://doaj.org/article/7be9f0e3eb8b4853a6cda90f4bf45194
Autor:
Siyang Li, Gagandeep S. Anand, Adam G. Riess, Stefano Casertano, Wenlong Yuan, Louise Breuval, Lucas M. Macri, Daniel Scolnic, Rachael Beaton, Richard I. Anderson
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 177 (2024)
The Hubble Tension, a >5 σ discrepancy between direct and indirect measurements of the Hubble constant ( H _0 ), has persisted for a decade and motivated intense scrutiny of the paths used to infer H _0 . Comparing independently derived distances fo
Externí odkaz:
https://doaj.org/article/af51ee0e95864a43b2b6c46367246201
Autor:
Louise Breuval, Adam G. Riess, Stefano Casertano, Wenlong Yuan, Lucas M. Macri, Martino Romaniello, Yukei S. Murakami, Daniel Scolnic, Gagandeep S. Anand, Igor Soszyński
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 30 (2024)
We present phase-corrected photometric measurements of 88 Cepheid variables in the core of the Small Magellanic Cloud (SMC), the first sample obtained with the Hubble Space Telescope's (HST) Wide Field Camera 3, in the same homogeneous photometric sy
Externí odkaz:
https://doaj.org/article/db32f8f1a7b7408b90a460769eb527af
Autor:
Gagandeep S. Anand, Adam G. Riess, Wenlong Yuan, Rachael Beaton, Stefano Casertano, Siyang Li, Dmitry I. Makarov, Lidia N. Makarova, R. Brent Tully, Richard I. Anderson, Louise Breuval, Andrew Dolphin, Igor D. Karachentsev, Lucas M. Macri, Daniel Scolnic
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 89 (2024)
The tip of the red giant branch (TRGB) allows for the measurement of precise and accurate distances to nearby galaxies based on the brightest ascent of low-mass red giant branch stars before they undergo the helium flash. With the advent of JWST, the
Externí odkaz:
https://doaj.org/article/a989c69edb59439dbda800c074abf208
Autor:
Caroline D. Huang, Wenlong Yuan, Adam G. Riess, Warren Hack, Patricia A. Whitelock, Nadia L. Zakamska, Stefano Casertano, Lucas M. Macri, Massimo Marengo, John W. Menzies, Randall K. Smith
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 83 (2024)
The giant spiral galaxy M101 is host to the nearest recent Type Ia supernova (SN 2011fe) and thus has been extensively monitored in the near-infrared to study the late-time light curve of the SN. Leveraging this existing baseline of observations, we
Externí odkaz:
https://doaj.org/article/d7bb80ad43e44eae888016909a133243
Autor:
Anamaria Blaga Petrean, Sorana Daina, Mihai Borzan, Adrian M. Macri, Liviu Bogdan, Eva A. Lazar, Silvana Popescu
Publikováno v:
Agriculture, Vol 14, Iss 2, p 179 (2024)
Despite considerable research regarding the benefits of natural living conditions on several aspects of the health and well-being of dairy cows, the effects of pasture access on their overall welfare are less studied. In this comparative study, the W
Externí odkaz:
https://doaj.org/article/4d1ef1fc42444695855c492a4c10f96b
Publikováno v:
BMC Musculoskeletal Disorders, Vol 23, Iss 1, Pp 1-7 (2022)
Abstract Background Patellofemoral OA is a strong risk factor for progression to generalized whole knee OA, but it is unknown whether involvement of the patellofemoral joint in early radiographic OA (ROA) is associated with risk of undergoing future
Externí odkaz:
https://doaj.org/article/f59a7ffb492443cf92e8fad1c58d820b
Autor:
J. L. Maxwell, T. Neogi, Kay M. Crossley, Erin M. Macri, Dan White, A. Guermazi, F. W. Roemer, M. C. Nevitt, C. E. Lewis, J. C. Torner, J. J. Stefanik
Publikováno v:
ACR Open Rheumatology, Vol 4, Iss 2, Pp 161-167 (2022)
Objective The study objective was to determine the relationship of magnetic resonance imaging (MRI)‐detected features of patellofemoral joint osteoarthritis to pain and functional outcomes. Methods We sampled 1,099 participants from the 60‐month
Externí odkaz:
https://doaj.org/article/b0d19ed1d59c4aef8f9ee48ea6c71614
Autor:
Adam G. Riess, Gagandeep S. Anand, Wenlong Yuan, Stefano Casertano, Andrew Dolphin, Lucas M. Macri, Louise Breuval, Dan Scolnic, Marshall Perrin, Richard I. Anderson
Publikováno v:
The Astrophysical Journal Letters, Vol 956, Iss 1, p L18 (2023)
High-resolution James Webb Space Telescope (JWST) observations can test confusion-limited Hubble Space Telescope (HST) observations for a photometric bias that could affect extragalactic Cepheids and the determination of the Hubble constant. We prese
Externí odkaz:
https://doaj.org/article/3ebdb0262ab8471787e6ab125de7762b