Results 101 to 110 of about 628,144 (303)

Detection of White Dwarf companions to Blue Straggler Stars from UVIT observations of M67 [PDF]

Proceedings of the International Astronomical Union, 2019
We investigate the old open cluster M67 using ultraviolet photometric data of Ultra-Violet Imaging Telescope in multi-filter far-UV bands. M67, well known for the presence of several blue straggler stars (BSS), has been put to detailed tests to ...
S. N, A. Subramaniam, A. Geller, Vikrant V. Jadhav, C. Knigge, M. Simunovic, N. Leigh, M. Shara, T. Puzia   +8 more
semanticscholar   +1 more source

Young blue straggler stars in the Galactic field [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
In this study we present an analysis of a sample of field blue straggler (BS) stars that show high ultra violet emission in their spectral energy distributions (SED): indication of a hot white dwarf (WD) companion to BS. Using photometry available in the Sloan Digital Sky Survey (SDSS) and Galaxy Evolution Explorer (GALEX ) surveys we identified 80 ...
Gemunu B. Ekanayake, Ronald Wilhelm
openaire   +3 more sources

FLIP: Transforming Consumer Projectors into Maskless Microscale Photopatterning Tools via Fresnel Lens Integration

Advanced Materials Technologies, EarlyView.
A low‐cost, maskless visible light photopatterning system has been developed by combining a consumer‐grade projector with a single Fresnel lens, generating the Fresnel Lens Integrated Projector (FLIP) system. FLIP enables flexible photopatterning of solid and gel films with features down to 30 µm and 135 µm, respectively.
Sridaran Rajagopal, Sofia Arshavsky‐Graham, Govind Kaigala   +2 more
wiley   +1 more source

UOCS XIV: Study of the Open Cluster NGC 2627 Using UVIT/AstroSat

The Astronomical Journal
We study the intermediate-age open cluster NGC 2627, located at a distance of ∼2 kpc, using UVIT/AstroSat and other archival data. Using a machine learning-based algorithm, ML-MOC, on the Gaia DR3 data, we identify 422 cluster members, including four ...
Pinapati Saketh, Anju Panthi, Kaushar Vaidya   +2 more
doaj   +1 more source

Monolithically Integrated Fourier Injected REsonator (FIRE) for Passive Coherent Laser Combination

Advanced Photonics Research, EarlyView.
Semiconductor diode‐based Fourier Injected REsonator (FIRE). The concept of free space FIRE, formerly known as the self‐Fourier cavity, is demonstrated for the first time on a chip‐scale device. A very high laser array coherence (97.7% fringe visibility), corresponding to single out‐of‐phase supermode operation, is reported.
Lance Sweatt, Xiaolei Zhao, Taylor LeVaur, Mohamed Baghdady, Mohan Ghimire, Md. Arefin Islam, Shafia Sultana, Kexin Li, Christopher J. Corcoran, Lin Zhu   +9 more
wiley   +1 more source

Comprehensive Analysis of NGC 6134: Structure, Dynamics, and Blue Straggler Star Candidates

The Astrophysical Journal Supplement Series
Open clusters play a critical role in the study of both stellar and Galactic evolution. We present a comprehensive analysis of the open cluster NGC 6134 using Gaia DR3 astrometric and photometric data, supplemented with multiwavelength observations from ...
Dexin Zeng, Ying Mei, Huanbin Chi, Hui Deng, Feng Wang   +4 more
doaj   +1 more source

The double blue-straggler sequence in NGC 2173: an artifact of field contamination [PDF]

Astronomy & Astrophysics, 2018
Here we discuss the case of the double blue straggler star (BSS) sequence recently detected in the young stellar cluster NGC 2173 in the Large Magellanic Cloud (LMC) by Li et al. (2018, ApJ, 856, 25).
E. Dalessandro, F. Ferraro, N. Bastian, M. Cadelano, B. Lanzoni, S. Raso   +5 more
semanticscholar   +1 more source

Blue Straggler Stars: The Spectacular Population in M80 [PDF]

The Astrophysical Journal, 1999
15 pages, 5 figures, Astrophysical Journal Letters, in ...
Robert T. Rood, Ben Dorman, Barbara Paltrinieri, Francesco R. Ferraro   +3 more
openaire   +3 more sources

Polybithiophene‐Based Molecularly Imprinted Polymers: A Comparative Mechanistic Study on Electrochemical Signal Transduction Approaches for Protein Detection

Advanced Sensor Research, EarlyView.
This study provides the first detailed comparison of the mechanisms behind differential pulse voltammetry and electrochemical impedance spectroscopy in electropolymerized molecularly imprinted polymer (MIP) sensing platforms. Using cystatin C as a model protein, it reveals how electron transfer processes generate signals and offers evidence‐based ...
Meriem Kassar, Ishatpreet Singh, Marcel Bauer, Tim Ballweg, Richard Thelen, Matthias Franzreb, Gözde Kabay   +6 more
wiley   +1 more source

Characterization of Blue and Yellow Straggler Stars of Berkeley 39

The Astronomical Journal
We characterize blue straggler stars (BSSs) and yellow straggler stars (YSSs) of the open cluster (OC) Berkeley 39 using multiwavelength observations including the Swift/Ultraviolet and Optical Telescope (UVOT). Our analysis also makes use of ultraviolet
Komal Chand, Khushboo K. Rao, Kaushar Vaidya, Anju Panthi   +3 more
doaj   +1 more source