Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Cepheid distance"'
Autor:
I. Soszyński, D. M. Skowron, A. Udalski, P. Pietrukowicz, M. Gromadzki, M. K. Szymański, J. Skowron, P. Mróz, R. Poleski, S. Kozłowski, P. Iwanek, M. Wrona, K. Ulaczyk, K. Rybicki, M. Mróz
Publikováno v:
The Astrophysical Journal Letters, Vol 965, Iss 2, p L17 (2024)
We report the discovery of the classical Cepheid OGLE-GD-CEP-1884 (= GDS_J1535467-555656) with the longest pulsation period known in our Galaxy. The period of 78.14 days is nearly 10 days longer than that of the previous record-holding Cepheid, S Vul
Externí odkaz:
https://doaj.org/article/08d61c983336468da3661339f6665c50
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:
Ilaria Musella, S. Leccia, R. Molinaro, M. Marconi, F. Cusano, M. Di Criscienzo, G. Fiorentino, V. Braga, V. Ripepi, G. De Somma, M. Gatto, E. Luongo, T. Sicignano
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 275, Iss 2, p 26 (2024)
An analysis of the properties of ultra-long-period Cepheids (ULPs) could significantly contribute to understanding the Hubble constant tension, e.g., the current discrepancy between determinations based on local distance indicators and those relying
Externí odkaz:
https://doaj.org/article/4a682e71b75c4a06a8b2efd5e3cdaa93
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
Publikováno v:
The Astronomical Journal, Vol 168, Iss 1, p 34 (2024)
It is beneficial to calibrate the period–Wesenheit–metallicity relation (PWZR) of Delta Cephei stars (DCEPs), i.e., classical Cepheids, using accurate parallaxes of associated open clusters (OCs) from Gaia data release 3 (DR3). To this aim, we ob
Externí odkaz:
https://doaj.org/article/bbffca0bc4534b97adbdfaf1571b0efc
Publikováno v:
The Astronomical Journal, Vol 167, Iss 5, p 201 (2024)
We present a novel technique for mapping single-phase observations of Cepheids in any given band into their time-averaged values, using strong priors on the known interrelations of the multiwavelength widths of Cepheid period–luminosity (PL) relati
Externí odkaz:
https://doaj.org/article/8d8e0f909a404d97bff09fdfafd0b6f8
Akademický článek
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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
Autor:
Paulina Karczmarek, Gergely Hajdu, Grzegorz Pietrzyński, Wolfgang Gieren, Weronika Narloch, Radosław Smolec, Grzegorz Wiktorowicz, Krzysztof Belczynski
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 182 (2023)
Because of their period–luminosity relation (PLR), classical Cepheids play a key role in the calibration of the extragalactic distance scale and the determination of the Hubble–Lemaître constant H _0 . Recent findings show that the majority of c
Externí odkaz:
https://doaj.org/article/d7f1e5f4337544369a1df9a9d873b4ea
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
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