Results 81 to 90 of about 68,770 (231)

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

On the massive star content of the nearby dwarf irregular Wolf-Rayet galaxy IC 4662 [PDF]

, 2009
Aims. We investigate the massive stellar content of the nearby dwarf irregular Wolf-Rayet galaxy IC 4662, and consider its global star forming properties in the context of other metal-poor galaxies, the SMC, IC 10 and NGC 1569. Methods.
Borissova, Buckalew, Crowther, Crowther, Crowther, De Robertis, Fagotto, Fruchter, Garnett, Gregory, Grocholski, Hadfield, Hammer, Helmboldt, Heydari-Malayeri, Hidalgo-Gámez, Hilditch, Hillenbrand, Hummer, Hunter, Hunter, J. L. Bibby, Johnson, Karachentsev, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kobulnicky, Kroupa, Leitherer, Lonsdale Persson, Maoz, Massey, McQuinn, Meynet, Meynet, Modjaz, P. A. Crowther, Parker, Rauw, Relaño, Russell, Schaerer, Schaerer, Schlegel, Seaton, Sirianni, Tody, Vacca   +51 more
core   +3 more sources

Proteomic analysis of the zone of degeneration at the mitosis–meiosis transition stage in wild‐caught male catshark (Scyliorhinus canicula), correlated with an unusually high‐water temperature in the English Channel

Journal of Fish Biology, EarlyView.
Abstract In the context of current global change, variations in water temperature are one of the environmental conditions with serious consequences for marine life, including reproductive processes. In the small spotted catshark Scyliorhinus canicula, spermatogenesis occurs in spermatocysts composed of synchronously developing germ cells associated ...
Fabian Jeanne, Stanislas Pilet, Sean Heighton, Benoît Bernay, Pascal Sourdaine   +4 more
wiley   +1 more source

A Nitrogen-rich Supernova Remnant in M31: Interaction with the Circumstellar Medium at Late Times

The Astrophysical Journal, 2023
We present the discovery of a supernova remnant in M31 which is unlike any other remnant known in that galaxy. An optical ground-based spectrum of WB92-26 taken at the MMT and sampling most of this marginally resolved object reveals strong lines of [O ii
Nelson Caldwell, John C. Raymond
doaj   +1 more source

IRAS LRS spectroscopy of galaxies

The Astronomical Journal, 1992
The study presents IRAS LRS data for 350 galaxies with pointlike IRAS sources having either S(12) or S(25) not less than 1.5 Jy. Techniques are presented which form the mean of an ensemble of LRS spectra, ll of which are only of low signal-to-noise ratio, by quantitative evaluation of the significance of the individual spectra for each object rather ...
openaire   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

The Average Stellar Population Age and Metallicity of Intermediate-redshift Quiescent Galaxies

The Astrophysical Journal
The HectoMAP spectroscopic survey provides a unique mass-limited sample of more than 35,000 quiescent galaxies ( D _n 4000 > 1.5) covering the redshift range 0.2  10 ^11 M _⊙ ) assemble the bulk of their stars at earlier epochs.
Ivana Damjanov, Margaret J. Geller, Jubee Sohn   +2 more
doaj   +1 more source

Initial study of regolith exposure ages and burial conditions on Ryugu: Cosmogenic nuclides score in two touchdowns

Meteoritics &Planetary Science, EarlyView.
Abstract Surface processes on the asteroid Ryugu have been investigated using cosmic‐ray‐produced radionuclides, 10Be, 26Al, and 36Cl, and stable noble gases, on eight samples returned by the Hayabusa2 spacecraft. The 10Be and 26Al along with 21Ne measurements indicate that the two Chamber A samples A0105 collected during the first touchdown (TD) were ...
Kunihiko Nishiizumi, Keisuke Nagao, Marc W. Caffee, Ryuji Okazaki, Jozef Masarik, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Hiroshi Naraoka, Hikaru Yabuta, Kanako Sakamoto, Kasumi Yogata, Toru Yada, Shogo Tachibana, Sei‐ichiro Watanabe, Yuichi Tsuda, Masanao Abe, Kazuya Kumagai, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Hirotaka Sawada, Satoshi Tanaka, Tomohiro Usui, Koji Wada, Hajime Yano, Makoto Yoshikawa, Hayabusa2 Initial Analysis Volatile Team   +30 more
wiley   +1 more source

COSMOS Spectroscopic Redshift Compilation (First Data Release): 488,000 Redshifts Encompassing Two Decades of Spectroscopy

The Astrophysical Journal Supplement Series
We present the COSMOS Spectroscopic Redshift Compilation encompassing ∼20 yr of spectroscopic redshifts within a 10 deg ^2 area centered on the 2 deg ^2 COSMOS legacy field.
Ali Ahmad Khostovan, Jeyhan S. Kartaltepe, Mara Salvato, Olivier Ilbert, Caitlin M. Casey, Hiddo Algera, Jacqueline Antwi-Danso, Andrew Battisti, Malte Brinch, Marcella Brusa, Antonello Calabrò, Peter L. Capak, Nima Chartab, Olivia R. Cooper, Isa G. Cox, Behnam Darvish, Nicole E. Drakos, Andreas L. Faisst, Matthew R. George, Ghassem Gozaliasl, Santosh Harish, Günther Hasinger, Hossein Hatamnia, Angela Iovino, Shuowen Jin, Daichi Kashino, Anton M. Koekemoer, Ronaldo Laishram, Khee-Gan Lee, Jitrapon Lertprasertpong, Simon J. Lilly, Daizhong Liu, Daniel C. Masters, Bahram Mobasher, Tohru Nagao, Masato Onodera, Yingjie Peng, David B. Sanders, Ryan L. Sanders, Zahra Sattari, Nick Scoville, Ekta A. Shah, John D. Silverman, Nao Suzuki, Sina Taamoli, Masayuki Tanaka, Lidia A. M. Tasca, Sune Toft, Greta Toni, Benny Trakhtenbrot, Jonathan R. Trump, Mattia Vaccari, Francesco Valentino, Brittany N. Vanderhoof, John R. Weaver, Min S. Yun, Jorge A. Zavala   +56 more
doaj   +1 more source

Damped Lyman-alpha Absorption Associated with an Early-Type Galaxy at Redshift z = 0.16377

, 1997
We report new HST and ground-based observations of a damped Lyman-alpha absorption system toward the QSO 0850+4400. The redshift of the absorption system is z = 0.163770 and the neutral hydrogen column density of the absorption system is log N = 19.81 cm*
Altan, Hakan, Barcons, Xavier, Chen, Hsiao-Wen, Fernandez-Soto, Alberto, Lanzetta, Kenneth M., Meyer, David, Ortiz-Gil, Amelia, Savaglio, Sandra, Webb, John, Wolfe, Arthur M., Yahata, Noriaki   +10 more
core   +1 more source