Results 101 to 110 of about 6,825 (205)

Research in extreme ultraviolet and far ultraviolet astronomy [PDF]

The Far Ultraviolet imager (FUVI) was flown on the Aries class sounding rocket 24.015, producing outstanding results. The diffuse extreme ultraviolet (EUV) background spectrometer which is under construction is described. It will be launched on the Black
Bowyer, C. S.
core   +1 more source

Preparing LIBS for in-situ measurements in JET tokamak: system overview and co-deposited layer thicknesses

Nuclear Materials and Energy
Laser-induced breakdown spectroscopy (LIBS) is a method for elemental composition analysis that has been proposed for fusion reactor safety diagnostics.
Jasper Ristkok, Salvatore Almaviva, Jari Likonen, Juuso Karhunen, Indrek Jõgi, Peeter Paris, Shweta Soni, Pavel Veis, Sahithya Atikukke, Jelena Butikova, Rongxing Yi, Ionut Jepu, Pawel Gasior, Corneliu Porosnicu, Mihaela Bojan, Bianca Solomonea, Sebastijan Brezinsek   +16 more
doaj   +1 more source

A Comprehensive Study of the Relations between the Properties of Planetary Systems and the Chemical Compositions of Their Host Stars

The Astrophysical Journal
The giant planet–metallicity correlation revealed that planetary formation depends on the stellar properties. There is growing evidence that it is also valid for smaller hot planets, but it is not clear whether elements other than iron also influence the
Luan Ghezzi, Ellen Costa-Almeida, Verónica Loaiza-Tacuri, Katia Cunha   +3 more
doaj   +1 more source

The California Legacy Survey. V. Chromospheric Activity Cycles in Main-sequence Stars

The Astrophysical Journal Supplement Series
We present optical spectroscopy of 710 solar neighborhood stars collected over 20 years to catalog chromospheric activity and search for stellar activity cycles.
Howard Isaacson, Andrew W. Howard, Benjamin Fulton, Erik A. Petigura, Lauren M. Weiss, Stephen R. Kane, Brad Carter, Corey Beard, Steven Giacalone, Judah Van Zandt, Joseph M. Akana Murphy, Fei Dai, Ashley Chontos, Alex S. Polanski, Malena Rice, Jack Lubin, Casey Brinkman, Ryan A. Rubenzahl, Sarah Blunt, Samuel W. Yee, Mason G. MacDougall, Paul A. Dalba, Dakotah Tyler, Aida Behmard, Isabel Angelo, Daria Pidhorodetska, Andrew W. Mayo, Rae Holcomb, Emma V. Turtelboom, Michelle L. Hill, Luke G. Bouma, Jingwen Zhang, Ian J. M. Crossfield, Nicholas Saunders   +33 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

The Distance of Quasar Outflows from the Central Source: The First Consistent Values from Emission and Absorption Determinations

The Astrophysical Journal
Measuring the distance of quasar outflows from the central source ( R ) is essential for determining their importance for active galactic nucleus feedback.
Mayank Sharma, Nahum Arav, Qinyuan Zhao, Maryam Dehghanian, Doyee Byun, Gwen Walker, Luming Sun, Lu Shen, Yulong Gao, Guilin Liu, Junfeng Wang   +10 more
doaj   +1 more source

The TESS-Keck Survey. XVII. Precise Mass Measurements in a Young, High-multiplicity Transiting Planet System Using Radial Velocities and Transit Timing Variations

The Astronomical Journal
We present a radial velocity (RV) analysis of TOI-1136, a bright Transiting Exoplanet Survey Satellite (TESS) system with six confirmed transiting planets, and a seventh single-transiting planet candidate.
Corey Beard, Paul Robertson, Fei Dai, Rae Holcomb, Jack Lubin, Joseph M. Akana Murphy, Natalie M. Batalha, Sarah Blunt, Ian Crossfield, Courtney Dressing, Benjamin Fulton, Andrew W. Howard, Dan Huber, Howard Isaacson, Stephen R. Kane, Grzegorz Nowak, Erik A Petigura, Arpita Roy, Ryan A. Rubenzahl, Lauren M. Weiss, Rafael Barrena, Aida Behmard, Casey L. Brinkman, Ilaria Carleo, Ashley Chontos, Paul A. Dalba, Tara Fetherolf, Steven Giacalone, Michelle L. Hill, Kiyoe Kawauchi, Judith Korth, Rafael Luque, Mason G. MacDougall, Andrew W. Mayo, Teo Močnik, Giuseppe Morello, Felipe Murgas, Jaume Orell-Miquel, Enric Palle, Alex S. Polanski, Malena Rice, Nicholas Scarsdale, Dakotah Tyler, Judah Van Zandt   +43 more
doaj   +1 more source

Determination of 10 Trace Impurity Elements in Titanium and Titanium Alloys with DC Arc Atomic Emission Spectrometry

Yankuang ceshi, 2014
High purity titanium and titanium alloy have good plasticity, but with the presence of impurity, their performance will become brittle and hard. The accurate quantitative analysis of impurity elements is useful for carrying on the quality control of ...
WANG Hui, MA Xiao-min, ZHENG Wei, WANG Kuan   +3 more
doaj   +2 more sources

Laser ablation plasma expansion using microwaves. [PDF]

Sci Rep, 2023
Ikeda Y, Soriano JK, Ohba H, Wakaida I.
europepmc   +1 more source

KBSS-InCLOSE. I. Design and First Results from the Inner Circumgalactic Medium of QSO Line-of-sight Emitting Galaxies at z ∼ 2–3

The Astrophysical Journal
We present the design and first results of the inner circumgalactic medium (CGM) of QSO line-of-sight emitting galaxies at z ∼ 2–3, Keck Baryonic Structure Survey (KBSS)-InCLOSE.
Evan Haze Nuñez, Charles C. Steidel, Evan N. Kirby, Gwen C. Rudie, Nikolaus Z. Prusinski, Yuguang Chen, Zhuyun Zhuang, Allison L. Strom, Dawn K. Erb, Max Pettini, Louise Welsh, David S. N. Rupke, Ryan J. Cooke   +12 more
doaj   +1 more source