Results 71 to 80 of about 226,792 (352)
The –M disk Relationship for Herbig Ae/Be Stars: A Lifetime Problem for Disks with Low Masses?
The Astronomical Journal, 2023 The accretion of material from protoplanetary disks onto their central stars is a fundamental process in the evolution of these systems and a key diagnostic in constraining the disk lifetime. We analyze the relationship between the stellar accretion rate
Sierra L. Grant +5 more
doaj +1 more source
Kepler observations of A–F pre-main-sequence stars in Upper Scorpius: discovery of six new δ Scuti and one γ Doradus stars [PDF]
, 2015 We present light curves and periodograms for 27 stars in the young Upper Scorpius association (age=$11 \pm 1$\,Myr) obtained with the Kepler spacecraft. This association is only the second stellar grouping to host several pulsating pre-main sequence (PMS)
V. Ripepi +5 more
semanticscholar +1 more source
Pulsation in pre-main sequence stars [PDF]
Proceedings of the International Astronomical Union, 2015 AbstractAsteroseismology has been proven to be a successful tool to unravel details of the internal structure for different types of stars in various stages of evolution well after birth. We can now show that it has similar power for pre-main sequence (pre-MS) objects.
openaire +2 more sources
Seismology of Pre‐Main‐Sequence Stars in NGC 6530 [PDF]
The Astrophysical Journal, 2007 Nonradial p-mode oscillation spectra, computed from a dense grid of pre-main-sequence models, are fit to observed oscillation spectra of several stars in the young cluster NGC 6530. The five stars we consider, all previously identified as pulsating pre-main-sequence stars, each have from two to nine observed oscillation frequencies.
Guenther, David B. +4 more
openaire +3 more sources
The influence of radiative core growth on coronal X-ray emission from pre-main sequence stars [PDF]
, 2016 SGG acknowledges support from the Science & Technology Facilities Council (STFC) via an Ernest Rutherford Fellowship [ST/J003255/1]. CLD acknowledges support from STFC via a PhD studentship and additional funding via the STFC Studentship Enhancement ...
S. Gregory +4 more
semanticscholar +1 more source
NGC 2362: a Template for Early Stellar Evolution [PDF]
, 2001 We present UBVRI photometry for the young open cluster NGC 2362. From analysis of the appropriate color-color and color-magnitude diagrams we derive the fundamental parameters of the NGC 2362 cluster to be: age = 5 (+1-2) Myr, distance = 1480 pc, E(B-V ...
A. Moitinho +7 more
core +2 more sources
FEBS Letters, EarlyView.In vivo IL‐10 produced by tissue‐resident tolDC is involved in maintaining/inducing tolerance. Depending on the agent used for ex vivo tolDC generation, cells acquire common features but prime T cells towards anergy, FOXP3+ Tregs, or Tr1 cells according to the levels of IL‐10 produced. Ex vivo‐induced tolDC were administered to patients to re‐establish/
Konstantina Morali +3 more
wiley +1 more source
The Astrophysical Journal, 2022 Very young ( t ≲ 10 Myr) stars possess strong magnetic fields that channel ionized gas from the interiors of their circumstellar disks to the surface of the star.
Hunter Campbell +23 more
doaj +1 more source
Nothing to hide: An X-ray survey for young stellar objects in the Pipe Nebula
, 2010 We have previously analyzed sensitive mid-infrared observations to establish that the Pipe Nebula has a very low star-formation efficiency. That study focused on YSOs with excess infrared emission (i.e, protostars and pre-main sequence stars with disks),
Agüeros +21 more
core +1 more source
Age Determination Method of Pre-Main Sequence Stars with High-Resolution I-Band Spectroscopy [PDF]
, 2010 We present a new method for determining the age of late-K type pre-main sequence (PMS) stars by deriving their surface gravity from high-resolution I-band spectroscopy.
Itoh, Yoichi +2 more
core +2 more sources