Results 151 to 160 of about 12,886 (274)

Collisions of Main-Sequence Stars and the Formation of Blue Stragglers in Globular Clusters [PDF]

, 1996
James C. Lombardi, Frederic A. Rasio, Stuart L. Shapiro   +2 more
openalex   +1 more source

Blue Straggler Formation in Clusters

, 2010
Blue stragglers are thought to be formed from the merger or coalescence of two stars, but the details of their formation in clusters has been difficult to disentangle.
Sills, Alison
core   +1 more source

GelCam: Visualizing sinking particle flux via a polyacrylamide gel‐based sediment trap

Limnology and Oceanography: Methods, EarlyView.
Abstract Sinking particles play a key role in the biological carbon pump. While previous studies have analyzed particulate carbon flux over timescales of days to years, few have been able to resolve flux variability on shorter, hourly scales at multiple depths simultaneously.
Yixuan Song, Melissa Omand, Colleen A. Durkin, Margaret L. Estapa, Ken O. Buesseler   +4 more
wiley   +1 more source

A Dual‐Programmable Metasurface with Duplex Beam Steering for Full‐Space Terahertz Communications

Laser &Photonics Reviews, EarlyView.
A dual‐programmable terahertz metasurface enables independent control of transmission and reflection beam steering. It breaks through the limitations in resonant tunability by polarization allocation with 2D‐electron‐gas tuning, enabling a single resonator to incorporate bidirectional operating modes.
Luyang Wang, Feng Lan, Shixiong Liang, Chunyang Bi, Tianyang Song, Dongfang Shen, Munan Yang, Lan Chen, Xuan Cong, Shengxiao Jin, Zhongbo Zhu, Sen Gong, Pinaki Mazumder, Ziqiang Yang, Yaxin Zhang, Tie Jun Cui   +15 more
wiley   +1 more source

HIP 8522: A Puzzling Young Solar Twin with the Lowest Detected Lithium Abundance

The Astrophysical Journal
We present HIP 8522, a young solar twin with the lowest detected lithium abundance, potentially a field blue straggler or the result of episodic early accretion. Its stellar parameters ( T _eff  = 5729 ± 7 K, $\mathrm{log}\,g$  = 4.532 ± 0.016 dex, [Fe/H]
Jhon Yana Galarza, Diego Lorenzo-Oliveira, Thiago Ferreira, Henrique Reggiani, Aida Behmard, Joshua D. Simon, Eder Martioli, Ricardo López-Valdivia, Leandro de Almeida, Emiliano Jofré, Kareem El-Badry   +10 more
doaj   +1 more source

HST — WFPC2 Photometry of the Globular Cluster NGC 288: Binary Systems, Blue Stragglers and Very Blue Stars [PDF]

, 2000
M. Bellazzini, M. Messineo
openalex   +1 more source

UBVI CCD Photometry of the Old Open Cluster NGC 1193

, 2008
We present UBVI photometry of the old open cluster NGC 1193. Color-magnitude diagrams (CMDs) of this cluster show a well defined main sequence and a sparse red giant branch.
Hiriart, David, Kim, Sang Chul, Kyeong, Jaemann, Sung, Eon-Chang   +3 more
core   +1 more source

Compact Spectral Imaging: A Review of Miniaturized and Integrated Systems

Laser &Photonics Reviews, EarlyView.
This review explores the rapid shift toward compact spectral imaging systems by examining four key design paradigms: Do‐It‐Yourself (DIY) platforms, freeform optics, filter‐on‐chip integration, and multifunctional metasurfaces. The discussion highlights critical applications in medicine, agriculture, and environmental monitoring, providing comparative ...
Sani Mukhtar, Amir Arbabi, Jaime Viegas
wiley   +1 more source

The Blue Lurker WOCS 14020: A Long-period Post-common-envelope Binary in M67 Originating from a Merger in a Triple System

The Astrophysical Journal Letters
We present Hubble Space Telescope far-ultraviolet (FUV) spectra of a blue lurker–white dwarf (BL–WD) binary system in the 4 Gyr open cluster M67. We fit the FUV spectrum of the WD, determining it is a C/O WD with a mass of $0.7{2}_{-0.04}^{+0.05}$ M _ ...
Emily M. Leiner, Natalie M. Gosnell, Aaron M. Geller, Meng Sun, Robert D. Mathieu, Alison Sills   +5 more
doaj   +1 more source

Evidence for Blue Straggler Stars Rejuvenating the Integrated Spectra of Globular Clusters [PDF]

, 2008
A. J. Cenarro, J. L. Cervantes, Michael A. Beasley, A. Marín-Franch, A. Vazdekis   +4 more
openalex   +3 more sources