Results 111 to 120 of about 47,444 (303)
A magnetic study of spotted UV Ceti flare stars and related late-type dwarfs
The Astrophysical Journal, 1980 A multichannel photoelectric Zeeman analyzer has been used to investigate the magnetic nature of the spotted UV Ceti flare stars. Magnetic observations were obtained on a sample of 19 program objects, of which 5 were currently spotted dKe-dMe stars, 7 were normal dK-dM stars, 7 were UV Ceti flare stars, and 1 was a possible post-T Tauri star.
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Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events
Astronomische Nachrichten, EarlyView.ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay +4 more
wiley +1 more source
The Astrophysical JournalWe present near-infrared parallax and proper motion astrometry for 74 L dwarfs and 99 T dwarfs, as single objects or in binary systems, obtained with the ASTROCAM astrometric imager on the USNO, Flagstaff Station 1.55 m telescope over two observing ...
Frederick J. Vrba +13 more
doaj +1 more source
, 2004 Recent discoveries from red optical proper motion and wide-field near-infrared surveys have uncovered a new population of ultracool subdwarfs -- metal-poor stars and brown dwarfs extending into the late-type M, L and possibly T spectral classes. These objects are among the first low-mass stars and brown dwarfs formed in the Galaxy, and are valuable ...
Burgasser, Adam J. +2 more
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Detection of lithium in nearby young late-M dwarfs
, 2016 Late M-type dwarfs in the solar neighborhood include a mixture of very low-mass stars and brown dwarfs which is difficult to disentangle due to the lack of constraints on their age such as trigonometric parallax, lithium detection and space velocity ...
Bessell, M. S. +6 more
core +1 more source
Listening to Hong Kong children's perspectives through pretend play
British Educational Research Journal, EarlyView.Abstract Quality in early childhood education and care (ECEC) has become an increasing concern in recent years. The issue has been regularly discussed by different stakeholders. However, the rising concern regarding quality in ECEC has not seriously taken into account children's perspectives.
Suzannie K. Y. Leung
wiley +1 more source
AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury
, 2022 Hepatology, EarlyView.
Robert J. Fontana +6 more
wiley +1 more source
Stellar Flare Study of nearby Young Moving Group Members with TESS Data
The Astrophysical JournalWe analyze TESS data to explore stellar flares and rotational characteristics in members of nearby young moving groups (NYMGs). Our study focuses on 417 members of NYMGs aged 10–150 Myr.
Andrew Tran, Inseok Song
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The MUCHFUSS photometric campaign
, 2018 Hot subdwarfs (sdO/Bs) are the helium-burning cores of red giants, which lost almost all of their hydrogen envelopes. This mass loss is often triggered by common envelope interactions with close stellar or even substellar companions. Cool companions like
Cordes, O. +6 more
core +1 more source
British Educational Research Journal, EarlyView.Abstract This paper challenges the prevailing assumption that technology‐enhanced learning (TEL) inherently benefits all students in higher education, examining how undergraduate students with specific learning differences (SpLDs) and/or autism spectrum disorder (ASD) use technology for learning.
Alexia Achtypi +3 more
wiley +1 more source