Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Red giant tip"'
Publikováno v:
The Astrophysical Journal Letters, Vol 963, Iss 2, p L43 (2024)
The tip of the red giant branch (TRGB) is an important standard candle for determining luminosity distances. Although several 10 ^5 small-amplitude red giant stars (SARGs) have been discovered, variability was previously considered irrelevant for the
Externí odkaz:
https://doaj.org/article/dff3c56e58a24af1841aacb64e23b1f5
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
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 181 (2024)
We investigate the absolute calibration of the tip of the red giant branch (TRGB) in the Small Magellanic Cloud (SMC) using small amplitude red giant stars (SARGs) classified by the Optical Gravitational Lensing Experiment (OGLE). We show that all st
Externí odkaz:
https://doaj.org/article/6c0b01dc7adf4e6f8b44e5bab986c881
Autor:
Gagandeep S. Anand, R. Brent Tully, Yotam Cohen, Dmitry I. Makarov, Lidia N. Makarova, Joseph B. Jensen, John P. Blakeslee, Michele Cantiello, Ehsan Kourkchi, Gabriella Raimondo
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 83 (2024)
Differences between the local value of the Hubble constant measured via the distance ladder versus the value inferred from the cosmic microwave background with the assumption of the standard ΛCDM model have reached over 5 σ significance. To determi
Externí odkaz:
https://doaj.org/article/c5ff0f83b8224499b677204549d3d3b2
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
Publikováno v:
The Astronomical Journal, Vol 167, Iss 3, p 123 (2024)
The color index ( J − K ) _0 of tip-red-giant branch (TRGB) is used to study the metallicity distribution in the Large and Small Magellanic Cloud. With the most complete and pure sample of red member stars so far, the areas are divided into 154 and
Externí odkaz:
https://doaj.org/article/0ebd82ac442148a0be43cfea0d978632
Autor:
Diogo Capelo, Ilídio Lopes
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 2, p 165 (2023)
The helium flash, occurring in stars of 0.6–2.0 M _⊙ at the end of the red giant branch, is not observable via optical means due to the energy of the process being used to lift the core out of degeneracy. Neutrinos, which are linked to the igniti
Externí odkaz:
https://doaj.org/article/ed275d9231ed4876823ad43fd93c297e
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 83 (2023)
The tip of the red giant branch (TRGB) is a standard candle that can be used to help refine the determination of the Hubble constant. Gaia Data Release 3 (DR3) provides synthetic photometry constructed from low-resolution BP/RP spectra for Milky Way
Externí odkaz:
https://doaj.org/article/a245eb1cda46437b891f833d07e63b1b
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.