JWST Imaging of the Closest Globular Clusters—V. The White Dwarfs Cooling Sequence of M4
Astronomische Nachrichten, Volume 346, Issue 2, February 2025.ABSTRACT We combine infrared (IR) observations collected by the James Webb Space Telescope with optical deep images by the Hubble Space Telescope taken ~20 years earlier to compute proper‐motion membership for the globular cluster (GC) M4 (NGC 6121) along its entire white dwarf (WD) cooling sequence (CS).
Luigi R. Bedin +11 more
wiley +1 more source
High-z Stellar Masses Can Be Recovered Robustly with JWST Photometry
The Astrophysical Journal LettersRobust inference of galaxy stellar masses from photometry is crucial for constraints on galaxy assembly across cosmic time. Here, we test a commonly used spectral energy distribution (SED) fitting code using simulated galaxies from the S phinx ^20 ...
R. K. Cochrane +4 more
doaj +1 more source
Revisiting Variable Stars Near Globular Clusters South of −29° Declination
Astronomische Nachrichten, Volume 346, Issue 2, February 2025.ABSTRACT We review an often‐cited but seldom‐accessed catalogue by Fourcade and Laborde (1966) of 785 variable stars near 47 southern Galactic globular clusters, and recover the locations of 85 stars that were not incorporated into subsequent variable star catalogues and hence have become “lost” to the literature.
Andrew C. Layden +7 more
wiley +1 more source
OPTICAL (VRI) PHOTOMETRY IN THE FIELD OF THE GALAXY CLUSTER AC 118 AT Z=0.31 [PDF]
, 2002 We present new photometric V-, R- and I-band data for the rich galaxy cluster AC 118 at $z=0.31$. The new photometry covers an area of $8.6\times8.6$ arcmin2, corresponding to $2.9\times2.9$ Mpc2 ($H_0=50$ km s-1 Mpc-1, $q_0=0.5$ and $\Lambda = 0$).
F. LA BARBERA +9 more
core +1 more source
Optically and x-ray selected galaxy groups at intermediate redshift [PDF]
, 2012 In this thesis I present the properties of two samples of galaxy groups containing 39 high quality X-ray selected systems and 38 optically (spectroscopically) selected systems in coincident spatial regions at 0 ...
Connelly, Jennifer L.
core
Speculator:emulating stellar population synthesis for fast and accurate galaxy spectra and photometry [PDF]
, 2019 We present \textsc{speculator} -- a fast, accurate, and flexible framework for emulating stellar population synthesis (SPS) models for predicting galaxy spectra and photometry. For emulating spectra, we use principal component analysis to construct a set
Leja, Joel +8 more
core +2 more sources
Generating astronomical spectra from photometry with conditional diffusion models [PDF]
, 2022 A trade-off between speed and information controls our understanding of astronomical objects. Fast-to-acquire photometric observations provide global properties, while costly and time-consuming spectroscopic measurements enable a better understanding of ...
Sznitman, Raphael +5 more
core
Studying Cosmic Evolution with the XMM-Newton Distant Cluster Project [PDF]
, 2007 Investigating X-ray luminous galaxy clusters at high redshift (z>~1) provides a challenging but fundamental constraint on evolutionary studies of the largest virialized structures in the Universe, the baryonic matter component in form of the hot ...
Fassbender, Rene
core
New Candidate Massive Clusters from 2MASS [PDF]
, 2013 Massive stars are important for the evolution of the interstellar medium. The detailed study of their properties (such as mass loss, rotation, magnetic fields) is enormously facilitated by samples of these objects in young massive galactic star clusters.
Dirk Froebrich, Froebrich, Dirk
core +1 more source
Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]
, 2011 This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
core