A gravitational bending of light by structures in the Universe that distorts the images of distant galaxies. The distortion allows the distribution of dark matter and its evolution with time to be mea
sured, thereby probing the influence of dark energy on the growth of structures. Weak gravitational lensing is generally difficult to identify in individual images, in contrast to strong gravitational lensing.
A gravitational bending of light by structures in the Universe that distorts the images of distant galaxies. The distortion allows the distribution of dark matter and its evolution with time to be mea
sured, thereby probing the influence of dark energy on the growth of structures. Weak gravitational lensing is generally difficult to identify in individual images, in contrast to strong gravitational lensing.
A T Tauri star that lacks strong emission lines in its optical spectrum, and lacks both strong stellar wind and infrared excess. These objects are believed to be pre-main sequence stars without obviou
s signs for disk accretion. Weak-line T Tauri stars result from the evolution of classical T Tauri stars.
A T Tauri star that lacks strong emission lines in its optical spectrum, and lacks both strong stellar wind and infrared excess. These objects are believed to be pre-main sequence stars without obviou
s signs for disk accretion. Weak-line T Tauri stars result from the evolution of classical T Tauri stars.
A T Tauri star that lacks strong emission lines in its optical spectrum, and lacks both strong stellar wind and infrared excess. These objects are believed to be pre-main sequence stars without obviou
s signs for disk accretion. Weak-line T Tauri stars result from the evolution of classical T Tauri stars.
A T Tauri star that lacks strong emission lines in its optical spectrum, and lacks both strong stellar wind and infrared excess. These objects are believed to be pre-main sequence stars without obviou
s signs for disk accretion. Weak-line T Tauri stars result from the evolution of classical T Tauri stars.
A T Tauri star that lacks strong emission lines in its optical spectrum, and lacks both strong stellar wind and infrared excess. These objects are believed to be pre-main sequence stars without obviou
s signs for disk accretion. Weak-line T Tauri stars result from the evolution of classical T Tauri stars.
A T Tauri star that lacks strong emission lines in its optical spectrum, and lacks both strong stellar wind and infrared excess. These objects are believed to be pre-main sequence stars without obviou
s signs for disk accretion. Weak-line T Tauri stars result from the evolution of classical T Tauri stars.