Results 81 to 90 of about 64,703 (265)

Identification of High-redshift Galaxy Overdensities in GOODS-N and GOODS-S

The Astrophysical Journal
We conduct a systematic search for high-redshift galaxy overdensities at 4.9 < z _spec < 8.9 in both the Great Observatories Origins Deep Survey (GOODS)-N and GOODS-S fields using James Webb Space Telescope/Near-Infrared Camera (JWST/NIRCam) imaging from
Jakob M. Helton, Fengwu Sun, Charity Woodrum, Kevin N. Hainline, Christopher N. A. Willmer, Marcia J. Rieke, George H. Rieke, Stacey Alberts, Daniel J. Eisenstein, Sandro Tacchella, Brant Robertson, Benjamin D. Johnson, William M. Baker, Rachana Bhatawdekar, Andrew J. Bunker, Zuyi Chen, Eiichi Egami, Zhiyuan Ji, Roberto Maiolino, Chris Willott, Joris Witstok   +20 more
doaj   +1 more source

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, Mattia Libralato, Maurizio Salaris, Domenico Nardiello, Michele Scalco, Massimo Griggio, Jay Anderson, Pierre Bergeron, Andrea Bellini, Roman Gerasimov, Adam J. Burgasser, Daniel Apai   +11 more
wiley   +1 more source

High-z Stellar Masses Can Be Recovered Robustly with JWST Photometry

The Astrophysical Journal Letters
Robust 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, H. Katz, R. Begley, C. C. Hayward, P. N. Best   +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, Julia Evangelista, Sakshi Gupta, Mithilesh Mittameda, Eva Mulloy, Sohan I. Muslim, Tiyinoluwa Olushola‐Alao, Akul Rishi   +7 more
wiley   +1 more source

White Dwarf Stars in the Big Data Era

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT White dwarf stars are the most common endpoint of stellar evolution. Therefore, these old, numerous and compact objects provide valuable information on the late stages of stellar evolution, the physics of dense plasma and the structure and evolution of our Galaxy.
Maria Camisassa
wiley   +1 more source

J-PAS: A neural network approach to single stellar population characterisation

Astronomy & Astrophysics
J-PAS (Javalambre Physics of the Accelerating Universe Astrophysical Survey) will present a groundbreaking photometric survey covering 8500 deg2 of the visible sky from Javalambre, capturing data in 56 narrow-band filters.
Domínguez Sánchez H., Coelho P., Bruzual G., Hernán-Caballero A., López Sanjuan C., Fernandez-Ontiveros J. A., Díaz-García L. A., Suelves L., Álvarez-Candal A., Breda I., Gurung-López S., Placco V., Vega-Ferrero J., Vílchez J. M., Abramo R., Alcaniz J., Benitez N., Bonoli S., Carneiro S., Cenarro J., Cristóbal-Hornillos D., Dupke R., Ederoclite A., Hernández–Monteagudo C., Marín-Franch A., Mendes de Oliveira C., Moles M., Sodré L., Taylor K., Varela J., Vázquez Ramió H.   +30 more
doaj   +1 more source

Near-Infrared Survey and Photometric Redshifts in the Extended GOODS-North field

, 2018
We present deep $J$ and $H$-band images in the extended Great Observatories Origins Deep Survey-North (GOODS-N) field covering an area of 0.22 $\rm{deg}^{2}$.
Ashby, Matthew L. N., Bau-Ching, Hsieh, Chen, Yi-Wen, Daddi, Emanuele, Dickinson, Mark, Elbaz, David, Fazio, Giovanni G., Foucaud, Sebastien, Hsu, Li-Ting, Huang, Jiasheng, Koo, David C., Lee, Chien-Hsiu, Lin, Lihwai, Morrison, Glenn, Ouchi, Masami, Owen, Frazer, Pannella, Maurilio, Pope, Alexendra, Scott, Douglas, Simard, Luc, Wang, Shiang-Yu, Wang, Wei-Hao, Willner, S. P., Yan, Chi-Hung, Yan, Haojing   +24 more
core   +1 more source

Preimpact Detection of Chelyabinsk‐Type Objects in the Thermal Infrared: Possibilities and Limitations

Advances in Astronomy, Volume 2025, Issue 1, 2025.
The Chelyabinsk meteor entered Earth’s atmosphere on 15 February 2013, producing a shock wave that injured about 1500 people and damaged thousands of buildings. Despite its relatively large size (∼20 m), the progenitor asteroid approached Earth undetected. Its apparent radiant was too close to the Sun for standard ground‐based near‐Earth asteroid (NEA)
Thomas Müller, Luca Conversi, Javier Licandro, Marco Delbo, Alan Fitzsimmons, Karri Muinonen, Marcel Popescu, Paolo Tanga, Richard Moissl, Michael Kueppers   +9 more
wiley   +1 more source

Spectroscopic Confirmation of an Ultra-Massive Galaxy in a Protocluster at $z \sim 4.9$

The Open Journal of Astrophysics
We present spectroscopic confirmation of an ultra-massive galaxy (UMG) with $\log(M_\star/M_\odot) = 10.98 \pm 0.07$ at $z_\mathrm{spec} = 4.8947$ in the Extended Groth Strip (EGS), based on deep observations of Ly$\alpha$ emission with Keck/DEIMOS.
Stephanie M. Urbano Stawinski, M. C. Cooper, Ben Forrest, Adam Muzzin, Danilo Marchesini, Gillian Wilson, Percy Gomez, Ian McConachie, Z. Cemile Marsan, Marianna Annuziatella, Wenjun Chang   +10 more
doaj   +1 more source

Morphology and surface photometry of a sample of isolated early-type galaxies from deep imaging [PDF]

, 2020
R. Rampazzo, A. Omizzolo, M. Uslenghi, J. Román, P. Mazzei, L. Verdes-Montenegro, A. Marino, M. G. Jones   +7 more
openalex   +1 more source