Results 71 to 80 of about 341,826 (304)
The Hubble Diagram: Jump from Supernovae to Gamma-ray Bursts
Universe, 2022 The Hubble diagram (HD) is a plot that contains a luminous distance modulus presented with respect to the redshift. The distance modulus–redshift relation of the most well-known “standard candles”, the type Ia supernovae (SN), is a crucial tool in ...
Nikita Yu. Lovyagin +3 more
doaj +1 more source
The Cepheid distance to the Local Group Galaxy NGC 6822
, 2012 Recent estimates of the Cepheid distance modulus of NGC 6822 differ by 0.18 mag. To investigate this we present new multi-epoch JHKs photometry of classical Cepheids in the central region of NGC 6822 and show that there is a zero-point difference from ...
Baldacci +23 more
core +1 more source
BV CCD Photometry of M71: Distance and Age [PDF]
Journal of Astronomy and Space Sciences, 2004 We present BV CCD photometry of metal-rich globular cluster M71. Based on our color-magnitude diagram (CMD), we derive the distance to M71 using a sample of Hipparcos subdwarfs of similar metallicity. Our distance modulus is (m-M)V=13.46(± 0.17).
Hong-Suh Yim +3 more
doaj +1 more source
The Discovery of Cepheids and a New Distance to NGC 2841 Using the Hubble Space Telescope [PDF]
, 2001 We report on the discovery of Cepheids in the spiral galaxy NGC 2841, based on observations made with the Wide Field and Planetary Camera 2 on board the Hubble Space Telescope.
B. F. Madore +10 more
core +4 more sources
Nanomaterials, 2021 The accurate measurement of nanoscale mechanical characteristics is crucial in the emerging field of soft condensed matter for industrial applications. An atomic force microscope (AFM) can be used to conduct nanoscale evaluation of the Young’s modulus on
Seongoh Kim +4 more
doaj +1 more source
, 2014 The distance to the Large Magellanic Cloud (LMC) represents a key local rung of the extragalactic distance ladder. Yet, the galaxy's distance modulus has long been an issue of contention, in particular in view of claims that most newly determined ...
Bono, Giuseppe +2 more
core +1 more source
Understanding and measuring mechanical signals in the tumor stroma
FEBS Open Bio, EarlyView.This review discusses cancer‐associated fibroblast subtypes and their functions, particularly in relation to extracellular matrix production, as well as the development of 3D models to study tumor stroma mechanics in vitro. Several quantitative techniques to measure tissue mechanical properties are also described, to emphasize the diagnostic and ...
Fàtima de la Jara Ortiz +3 more
wiley +1 more source
Testing cosmic opacity from SNe Ia and Hubble parameter through three cosmological-model-independent methods [PDF]
, 2012 We use the newly published 28 observational Hubble parameter data ($H(z)$) and current largest SNe Ia samples (Union2.1) to test whether the universe is transparent. Three cosmological-model-independent methods (nearby SNe Ia method, interpolation method
Li, Zhengxiang +3 more
core +2 more sources
Swampland variations on a theme by KKLT
Journal of High Energy Physics, 2019 The KKLT scenario in a warped throat, if consistent, provides a concrete counterexample to both the AdS scale separation and the dS swampland conjectures.
Ralph Blumenhagen +2 more
doaj +1 more source
FEBS Open Bio, EarlyView.Stem cell‐based embryo models (SCBEMs) are valuable to study early developmental milestones. Matrigel, a basement membrane matrix, is a critical substrate used in various SCBEM protocols, but its role in driving stem cell lineage commitment is not clearly defined.
Atoosa Amel +3 more
wiley +1 more source