TDCOSMO. X. Cosmological distance measurements in light of the mass-sheet degeneracy: Forecasts from strong lensing and integral field unit stellar kinematics [PDF]
Astronomy & Astrophysics, 2021 Time-delay strong lensing (TDSL) is a powerful probe of the current expansion rate of the Universe. However, in light of the discrepancies between early and late-time cosmological studies, efforts revolve around the characterisation of systematic ...
A. Yıldırım +3 more
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Stellar kinematics in the nuclear regions of nearby LIRGs with VLT-SINFONI [PDF]
Astronomy & Astrophysics, 2021 Context. Nearby luminous infrared galaxies (LIRGs) are often considered to be the local counterpart of the star forming galaxy (SFG) population at z > 1.
A. G'omez +5 more
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The combined and respective roles of imaging and stellar kinematics in identifying galaxy merger remnants [PDF]
, 2022 One of the central challenges to establishing the role of mergers in galaxy evolution is the selection of pure and complete merger samples in observations.
Connor Bottrell +4 more
semanticscholar +1 more source
Accurate Identification of Galaxy Mergers with Stellar Kinematics [PDF]
Astrophysical Journal, 2021 To determine the importance of merging galaxies to galaxy evolution, it is necessary to design classification tools that can identify the different types and stages of merging galaxies.
R. Nevin +11 more
semanticscholar +1 more source
Spatially Resolved Stellar Kinematics of the Ultra-diffuse Galaxy Dragonfly 44. I. Observations, Kinematics, and Cold Dark Matter Halo Fits [PDF]
Astrophysical Journal, 2019 We present spatially resolved stellar kinematics of the well-studied ultra-diffuse galaxy (UDG) Dragonfly 44, as determined from 25.3 hr of observations with the Keck Cosmic Web Imager.
P. V. van Dokkum +10 more
semanticscholar +1 more source
Point-spread Function Deconvolution of the IFU Data and Restoration of Galaxy Stellar Kinematics [PDF]
Astrophysical Journal Supplement Series, 2020 We present a performance test of the point-spread function (PSF) deconvolution algorithm applied to astronomical integral field unit (IFU) spectroscopy data for restoration of galaxy kinematics.
Haeun Chung +2 more
semanticscholar +1 more source
Kinematics of Antlia 2 and Crater 2 from the Southern Stellar Stream Spectroscopic Survey (S 5) [PDF]
Astrophysical Journal, 2021 We present new spectroscopic observations of the diffuse Milky Way satellite galaxies Antlia 2 and Crater 2, taken as part of the Southern Stellar Stream Spectroscopic Survey (S 5). The new observations approximately double the number of confirmed member
A. Ji +17 more
semanticscholar +1 more source
Still Missing Dark Matter: KCWI High-resolution Stellar Kinematics of NGC1052-DF2 [PDF]
Astrophysical Journal, 2019 The velocity dispersion of the ultra diffuse galaxy NGC1052-DF2 was found to be km s−1, much lower than expected from the stellar mass–halo mass relation and nearly identical to the expected value from the stellar mass alone. This result was based on the
S. Danieli +4 more
semanticscholar +1 more source
NIHAO XXIV: rotation- or pressure-supported systems? Simulated Ultra Diffuse Galaxies show a broad distribution in their stellar kinematics [PDF]
, 2020 In recent years a new window on galaxy evolution opened, thanks to the increasing discovery of galaxies with a low surface brightness, such as Ultra Diffuse Galaxies (UDGs).
S. Cardona-Barrero +6 more
semanticscholar +1 more source
Age–metallicity dependent stellar kinematics of the Milky Way disc from LAMOST and Gaia [PDF]
, 2020 We investigate the stellar kinematics of the Galactic disc in 7 < R < 13 kpc using a sample of 118 945 red giant branch (RGB) stars from LAMOST and Gaia.
Yaqian Wu +7 more
semanticscholar +1 more source