Zobrazeno 1 - 10
of 10 012
pro vyhledávání: '"G. RIESS"'
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:
Kolah, Debra1 dkolah@rice.edu, Fosmire, Michael T.2
Publikováno v:
Science & Technology Libraries. 2012, Vol. 31 Issue 1, p12-31. 20p.
Autor:
Michael T. Fosmire, Debra Kolah
Publikováno v:
Libraries Faculty and Staff Scholarship and Research
The Nobel Prize in Physics 2011 was awarded to scientists from two different research collaborations that independently and contemporaneously discovered from observations of distant supernovae that the universe's expansion is accelerating. One half o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33bbd6f6c04af3a56be3a0a19ea8b58b
https://doi.org/10.1080/0194262x.2012.648112
https://doi.org/10.1080/0194262x.2012.648112
Autor:
Rolf-Peter Kudritzki, Miguel A. Urbaneja, Fabio Bresolin, Lucas M. Macri, Wenlong Yuan, Siyang Li, Gagandeep S. Anand, Adam G. Riess
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 217 (2024)
A quantitative spectroscopic study of blue supergiant stars in the Hubble constant anchor galaxy NGC 4258 is presented. The non-LTE analysis of Keck I telescope LRIS spectra yields a central logarithmic metallicity (in units of the solar value) of [
Externí odkaz:
https://doaj.org/article/57ac87462d5c498cb5af50e65cce187a
Autor:
Adam G. Riess, Dan Scolnic, Gagandeep S. Anand, Louise Breuval, Stefano Casertano, Lucas M. Macri, Siyang Li, Wenlong Yuan, Caroline D. Huang, Saurabh Jha, Yukei S. Murakami, Rachael Beaton, Dillon Brout, Tianrui Wu, Graeme E. Addison, Charles Bennett, Richard I. Anderson, Alexei V. Filippenko, Anthony Carr
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 120 (2024)
We cross-check the Hubble Space Telescope (HST) Cepheid/Type Ia supernova (SN Ia) distance ladder, which yields the most precise local H _0 , against early James Webb Space Telescope (JWST) subsamples (∼1/4 of the HST sample) from SH0ES and CCHP, c
Externí odkaz:
https://doaj.org/article/141c737148154d73939f2dcd142b1342
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:
J. D. R. Pierel, B. L. Frye, M. Pascale, G. B. Caminha, W. Chen, S. Dhawan, D. Gilman, M. Grayling, S. Huber, P. Kelly, S. Thorp, N. Arendse, S. Birrer, M. Bronikowski, R. Cañameras, D. Coe, S. H. Cohen, C. J. Conselice, S. P. Driver, J. C. J. DŚilva, M. Engesser, N. Foo, C. Gall, N. Garuda, C. Grillo, N. A. Grogin, J. Henderson, J. Hjorth, R. A. Jansen, J. Johansson, P. S. Kamieneski, A. M. Koekemoer, C. Larison, M. A. Marshall, L. A. Moustakas, M. Nonino, R. Ortiz III, T. Petrushevska, N. Pirzkal, A. Robotham, R. E. Ryan Jr., S. Schuldt, L. G. Strolger, J. Summers, S. H. Suyu, T. Treu, C. N. A. Willmer, R. A. Windhorst, H. Yan, A. Zitrin, A. Acebron, S. Chakrabarti, D. A. Coulter, O. D. Fox, X. Huang, S. W. Jha, G. Li, P. A. Mazzali, A. K. Meena, I. Pérez-Fournon, F. Poidevin, A. Rest, A. G. Riess
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 1, p 50 (2024)
Supernova (SN) SN H0pe is a gravitationally lensed, triply imaged, Type Ia SN (SN Ia) discovered in James Webb Space Telescope imaging of the PLCK G165.7+67.0 cluster of galaxies. Well-observed multiply imaged SNe provide a rare opportunity to constr
Externí odkaz:
https://doaj.org/article/5060013de8ee41a58fc63301fe908ece
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:
Siyang Li, Adam G. Riess, Stefano Casertano, Gagandeep S. Anand, Daniel M. Scolnic, Wenlong Yuan, Louise Breuval, Caroline D. Huang
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 20 (2024)
We study stars in the J-regions of the asymptotic giant branch (JAGB) of near-infrared color–magnitude diagrams in the maser host NGC 4258 and four hosts of six Type Ia supernovae (SNe Ia): NGC 1448, NGC 1559, NGC 5584, and NGC 5643. These clumps o
Externí odkaz:
https://doaj.org/article/00292699c0ea43d3af88cb6cfad298ef