We demonstrate that a seismic analysis of stars in their earliest evolutionary phases is a powerful method with which to identify young stars and distinguish their evolutionary states. The early star that is born from the gravitational collapse of a molecular cloud reaches at some point sufficient temperature, mass, and luminosity to be detected. Accretion stops, and the pre-main sequence star that emerges is nearly fully convective and chemically homogeneous. It will continue to contract gravitationally until the density and temperature in the core are high enough to start nuclear burning of hydrogen. We show that there is a relationship for a sample of young stars between detected pulsation properties and their evolutionary status, illustrating the potential of asteroseismology for the early evolutionary phases.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.1253645 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An Overlooked Challenge: A Retrospective Audit of Overnutrition in Hospital Rehabilitation Wards.
Healthcare (Basel)
January 2025
Nutrition Research Collaborative, Royal Brisbane & Women's Hospital, Metro North Health, Brisbane, QLD 4029, Australia.
Research shows that obesity has risen among rehabilitation patients. Despite this, nutrition care in subacute rehabilitation wards focuses primarily on preventing and treating protein-energy malnutrition. The continued provision of energy-dense meals during lengthy rehabilitation admissions may present a risk of overnutrition for some patients, which can adversely affect functional outcomes.
View Article and Find Full Text PDFAtacama Large Aperture Submillimeter Telescope (AtLAST) science: Probing the transient and time-variable sky.
Open Res Eur
January 2025
Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, 91125, USA.
The study of transient and variable events, including novae, active galactic nuclei, and black hole binaries, has historically been a fruitful path for elucidating the evolutionary mechanisms of our universe. The study of such events in the millimeter and submillimeter is, however, still in its infancy. Submillimeter observations probe a variety of materials, such as optically thick dust, which are hard to study in other wavelengths.
View Article and Find Full Text PDFConstruction and Development of an Enhanced Recovery After Surgery Program for the Surgical Management of Patients With Spinal Metastasis: A Modified Delphi Study.
Orthop Surg
January 2025
Department of Orthopaedics, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Objective: As an effective treatment for spinal metastasis (SM), ERAS protocol can significantly reduce the length of hospital stay and complications in patients. Establishing an ERAS program for perioperative care after SM surgery is a clinical problem that needs to be addressed urgently. We aimed to develop an Enhanced Recovery After Surgery (ERAS) program and Surgical Safety Checklist (SSC) that conferred clinical benefit to patients with SM and made it relatively easy to manage the condition.
View Article and Find Full Text PDFRecent trends in scientific research in chest radiology: What to do or not to do? That is the critical question in research.
Jpn J Radiol
January 2025
Department of Diagnostic Radiology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan.
Hereby inviting young rising stars in chest radiology in Japan for contributing what they are working currently, we would like to show the potentials and directions of the near future research trends in the research field. I will provide a reflection on my own research topics. At the end, we also would like to discuss on how to choose the themes and topics of research: What to do or not to do? We strongly believe it will stimulate and help investigators in the field.
View Article and Find Full Text PDFDo-Nothing Prebiotic Chemistry: Chemical Kinetics as a Window into Prebiotic Plausibility.
Acc Chem Res
January 2025
Astrophysics Group, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
ConspectusOrigin of Life research is a fast growing field of study with each year bringing new breakthroughs. Recent discoveries include novel syntheses of life's building blocks, mechanisms of activation and interaction between molecules, and newly identified environments that provide promising conditions for these syntheses and mechanisms. Even with these new findings, firmly grounded in rigorous laboratory experiments, researchers often find themselves uncertain about how to apply them.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!