Results 71 to 80 of about 62,204 (222)

Review of asteroid, meteor, and meteorite‐type links

Meteoritics &Planetary Science, Volume 60, Issue 4, Page 928-973, April 2025.
Abstract With the goal to determine the origin of our meteorites in the asteroid belt, video and photographic observations of meteors have now tracked 75 meteorite falls. Six years ago, there were just hints that different meteorite types arrived on different orbits, but now, the number of orbits (N) is high enough for distinct patterns to emerge.
Peter Jenniskens, Hadrien A. R. Devillepoix   +1 more
wiley   +1 more source

Weighing the Giants II: Improved Calibration of Photometry from Stellar Colors and Accurate Photometric Redshifts [PDF]

, 2014
We present improved methods for using stars found in astronomical exposures to calibrate both star and galaxy colors as well as to adjust the instrument flat field.
Allen, Mark T., Allen, Steven W., Applegate, Douglas E., Burchat, Patricia R., Burke, David L., Capak, Peter, Czoske, Oliver, Donovan, David, Ebeling, Harald, Kelly, Patrick L., Mantz, Adam, Morris, R. Glenn, von der Linden, Anja   +12 more
core   +2 more sources

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

Machine Learning versus Spectral Energy Distribution Fitting: A Comparative Analysis of Accuracy in Stellar Mass Estimation

The Astrophysical Journal
Traditional spectral energy distribution (SED)–fitting methods for stellar mass estimation face persistent challenges including systematic biases and computational constraints.
Vahid Asadi, Akram Hasani Zonoozi, Hosein Haghi   +2 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

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

The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample [PDF]

, 2011
We present ACS, NICMOS, and Keck AO-assisted photometry of 20 Type Ia supernovae SNe Ia from the HST Cluster Supernova Survey. The SNe Ia were discovered over the redshift interval 0.623 < z < 1.415.
A. Dey, A. Goobar, A. Gude, A. H. Gonzalez, A. S. Fruchter, A. Spadafora, Albrecht, Amanullah, B. Koester, Barbary, Barbary, Barbary, Barker, Beckwith, Blakeslee, Bohlin, Bohlin, Bohlin, Bohringer, Bouwens, Brodwin, Bundy, C. Lidman, C. Mullis, Conley, Contreras, D. G. Gilbank, D. J. Schlegel, D. Johnston, D. Rubin, D. Stern, Dahlen, Dawson, de Jong, Doi, Dunkley, E. Ellingson, E. Hsiao, E. V. Linder, Eisenhardt, Eisenstein, F. Munshi, G. Aldering, G. Goldhaber, Garnavich, Gilbank, Gladders, H. Hoekstra, H. K. C. Yee, H. K. Fakhouri, Hamuy, Heyer, Hicken, Hicken, Hilton, Hilton, Holtzman, Hsiao, Hsiao, Huang, J. Botyanszki, J. Melbourne, J. Meyers, J. Rhodes, Jee, Jee, K. Barbary, K. Konishi, K. S. Dawson, K. Tokita, Kaiser, Kelly, Kessler, Knop, Koekemoer, Komatsu, Kowalski, Kuznetsova, L. F. Barrientos, L. Faccioli, L. Lubin, L. Wang, Lampeitl, Liddle, M. Brodwin, M. D. Gladders, M. Doi, M. Donahue, M. J. Jee, M. Kowalski, M. Postman, M. Strovink, M. Wagner, Mei, Melbourne, Melbourne, Meyers, Miknaitis, Mobasher, Morokuma, N. Connolly, N. Kashikawa, N. Panagia, N. Suzuki, N. Takanashi, N. Yasuda, Navarro, P. Eisenhardt, P. Ripoche, P. Rosati, Peng, Perlmutter, Postman, R. Amanullah, Riess, Riess, Riess, Riess, Riess, Riess, Riess, Ripoche, Rosati, S. A. Stanford, S. Deustua, S. Perlmutter, Sand, Schlegel, Schmidt, Smith, Spergel, Sullivan, T. Hattori, T. Morokuma, T. Oda, T. Pritchard, Tremonti, V. Fadeyev, V. Stanishev, Wood-Vasey, X. Huang, Y. Ihara   +141 more
core   +5 more sources

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

ARCHANGEL Galaxy Photometry System

, 2007
31 pages, 14 figures, software package at http://abyss.uoregon.edu/~js ...
openaire   +2 more sources

Constraining the mass of the GRB 030329 progenitor

, 2008
The long-duration gamma-ray burst (GRB) 030329, associated with supernova (SN) 2003dh, occurred inside a star-forming dwarf galaxy at redshift $z=0.1685$.
Anders, Arp, Barker, Bruzual, Calzetti, Clegg R. E. Middlemass, Crockett, Crockett, Davidson, Deng, Dopita, Eldridge, Fagotto, Ferland, Foley, Fruchter, Gal-Yam, Gal-Yam, Galama, Gil de Paz, Gorosabel, Heger, Hirschi, Hjorth, Lejeune, Li, MacFadyen, Magris, Massey, Matheson, Maund, Maund, Mazzali, Mazzali, Maíz-Apellániz, McKee, Meurer, Meynet, Moy, Pastorello, Patat, Pei, Schlegel, Sirianni, Smartt, Smartt, Sokolov, Sollerman, Stanek, Thöne, Wang, Woosley, Woosley, Zackrisson, Zackrisson, Östlin   +55 more
core   +1 more source