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Akademický článek

JWST Observations Reject Unrecognized Crowding of Cepheid Photometry as an Explanation for the Hubble Tension at 8σ Confidence

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

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Akademický článek

Tip of the Red Giant Branch Distances with JWST. II. I-band Measurements in a Sample of Hosts of 10 Type Ia Supernova Match HST Cepheids

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

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Akademický článek

Small Magellanic Cloud Cepheids Observed with the Hubble Space Telescope Provide a New Anchor for the SH0ES Distance Ladder

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

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Akademický článek

JWST Photometric Time-delay and Magnification Measurements for the Triply Imaged Type Ia 'SN H0pe' at z = 1.78

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

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Akademický článek

Tip of the Red Giant Branch Distances with JWST: An Absolute Calibration in NGC 4258 and First Applications to Type Ia Supernova Hosts

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

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Akademický článek

Reconnaissance with JWST of the J-region Asymptotic Giant Branch in Distance Ladder Galaxies: From Irregular Luminosity Functions to Approximation of the Hubble Constant

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

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Akademický článek

Evaluating the Consistency of Cosmological Distances Using Supernova Siblings in the Near-infrared

Autor: Arianna M. Dwomoh, Erik R. Peterson, Daniel Scolnic, Chris Ashall, James M. DerKacy, Aaron Do, Joel Johansson, David O. Jones, Adam G. Riess, Benjamin J. Shappee

Publikováno v: The Astrophysical Journal, Vol 965, Iss 1, p 90 (2024)

The study of supernova (SN) siblings, supernovae with the same host galaxy, is an important avenue for understanding and measuring the properties of Type Ia SN Ia light curves (LCs). Thus far, sibling analyses have mainly focused on optical LC data.

Externí odkaz: https://doaj.org/article/c5277255e0b143f9a4d22c89754907b0

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Akademický článek

The Mira Distance to M101 and a 4% Measurement of H 0

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

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Akademický článek

Crowded No More: The Accuracy of the Hubble Constant Tested with High-resolution Observations of Cepheids by JWST

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

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Akademický článek

High-resolution Spectroscopic Metallicities of Milky Way Cepheid Standards and Their Impact on the Leavitt Law and the Hubble Constant

Autor: Anupam Bhardwaj, Adam G. Riess, Giovanni Catanzaro, Erasmo Trentin, Vincenzo Ripepi, Marina Rejkuba, Marcella Marconi, Chow-Choong Ngeow, Lucas M. Macri, Martino Romaniello, Roberto Molinaro, Harinder P. Singh, Shashi M. Kanbur

Publikováno v: The Astrophysical Journal Letters, Vol 955, Iss 1, p L13 (2023)

Milky Way Cepheid variables with accurate Hubble Space Telescope photometry have been established as standards for primary calibration of the cosmic distance ladder to achieve a percent-level determination of the Hubble constant ( H _0 ). These 75 Ce

Externí odkaz: https://doaj.org/article/3da763d2bc2a440096be96fbcaa622e6

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