Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Louise Breuval"'
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:
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:
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
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
Autor:
Louise Breuval, Adam G. Riess, Lucas M. Macri, Siyang Li, Wenlong Yuan, Stefano Casertano, Tarini Konchady, Boris Trahin, Meredith J. Durbin, Benjamin F. Williams
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 118 (2023)
We present a low-dispersion period–luminosity relation (PL) based on 154 Cepheids in Messier 33 (M33) with Hubble Space Telescope (HST) photometry from the PHATTER survey. Using high-quality ground-based light curves, we recover Cepheid phases and
Externí odkaz:
https://doaj.org/article/ca30d0bd06354eda835d4bad5129bc13
The Cepheid period-luminosity (PL) relation (or Leavitt law) has served as the first rung of the most widely used extragalactic distance ladder and is central to the determination of the local value of the Hubble constant ($H_0$). We investigate the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeac3b0d5516e549e224162b25e03aba
Autor:
Louise, Breuval
Cepheids are pulsating variable stars which play a key role as primary distance indicators thanks to the empirical relation between their pulsation period and intrinsic luminosity, the period-luminosity relation. This law is used to calibrate the bri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13bad5f4499d346c88110a5d6edf21d5
Autor:
Adam G. Riess, Louise Breuval, Wenlong Yuan, Stefano Casertano, Lucas M. Macri, J. Bradley Bowers, Dan Scolnic, Tristan Cantat-Gaudin, Richard I. Anderson, Mauricio Cruz Reyes
Publikováno v:
The Astrophysical Journal
We present HST photometry of 17 Cepheids in open clusters and their mean parallaxes from Gaia EDR3. These parallaxes are more precise than those from individual Cepheids (G300 stars per cluster. Cluster parallaxes also have smaller systematic uncerta
Autor:
Adam G. Riess, Wenlong Yuan, Lucas M. Macri, Dan Scolnic, Dillon Brout, Stefano Casertano, David O. Jones, Yukei Murakami, Gagandeep S. Anand, Louise Breuval, Thomas G. Brink, Alexei V. Filippenko, Samantha Hoffmann, Saurabh W. Jha, W. D’arcy Kenworthy, John Mackenty, Benjamin E. Stahl, WeiKang Zheng
Publikováno v:
The Astrophysical Journal Letters. 934:L7
We report observations from the Hubble Space Telescope (HST) of Cepheid variables in the host galaxies of 42 Type Ia supernovae (SNe Ia) used to calibrate the Hubble constant (H 0). These include the complete sample of all suitable SNe Ia discovered