Results 61 to 70 of about 536 (173)

Seeking Spectroscopic Binaries with Data-driven Models

The Astrophysical Journal
Data-driven stellar classification has a long and important history in astronomy, dating as far back as Annie Jump Cannon’s “by-eye” classifications of stars into spectral types, still used today.
Isabel Angelo, Erik Petigura, Megan Bedell   +2 more
doaj   +1 more source

Novel Calibration Approach for Monitoring Aerosol Hydrogen Isotopes Using Laser-Induced Breakdown Spectroscopy for Molten Salt Reactor Off-Gas Streams. [PDF]

Sensors (Basel), 2023
Andrews HB, McFarlane J.
europepmc   +1 more source

A Homogeneous Catalog of Oscillating Solar-type Stars Observed by the Kepler Mission and a New Amplitude Scaling Relation Including Chromospheric Activity

The Astronomical Journal
We present a homogeneous catalog of global asteroseismic parameters and derived stellar parameters for 765 Kepler main-sequence and subgiant stars. The catalog was produced by reanalyzing all available Kepler DR25 short-cadence data using pySYD , an ...
Maryum Sayeed, Daniel Huber, Ashley Chontos, Yaguang Li   +3 more
doaj   +1 more source

Revealing the Morpho-Kinematics of NGC 2371—A Planetary Nebula with a [WR] Central Star

Galaxies
We present new high-dispersion optical spectra of the planetary nebula NGC 2371 obtained with the Manchester Echelle Spectrometer at the OAN-SPM 2.1 m telescope, complemented with 3D morpho-kinematic modelling using ShapeX.
Roberto Vázquez, Jesús A. Toalá, Luis F. Miranda, Sandra Ayala, María E. Contreras, Marco A. Gómez-Muñoz, Pedro F. Guillen, Lorenzo Olguín, Gerardo Ramos-Larios, Laurence Sabin, Federico Soto-Badilla   +10 more
doaj   +1 more source

A Perfect Tidal Storm: HD 104067 Planetary Architecture Creating an Incandescent World

The Astronomical Journal
The discovery of planetary systems beyond the solar system has revealed a diversity of architectures, most of which differ significantly from our system.
Stephen R. Kane, Tara Fetherolf, Zhexing Li, Alex S. Polanski, Andrew W. Howard, Howard Isaacson, Teo Močnik, Sadie G. Welter   +7 more
doaj   +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

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

Pre-Launch Spectral Calibration of the Absorbed Aerosol Sensor. [PDF]

Sensors (Basel), 2023
Mao J, Wang Y, Shi E, Wang J.
europepmc   +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

Mobile Laser-Induced Breakdown Spectroscopy for Future Application in Precision Agriculture-A Case Study. [PDF]

Sensors (Basel), 2023
Erler A, Riebe D, Beitz T, Löhmannsröben HG, Leenen M, Pätzold S, Ostermann M, Wójcik M.   +7 more
europepmc   +1 more source