Results 121 to 130 of about 46,048 (306)
New Phytologist, EarlyView.Summary Algal blooms and their demise by viruses drive global‐scale ecological processes in the ocean. These blooms form the foundation of marine food webs, regulate microbial communities, and shape biogeochemical cycles. Although algal populations are constantly infected by viruses, resistant subpopulations frequently emerge after the infection.
Talia S. Shaler +5 more
wiley +1 more source
Rotational Velocities and Radii Estimates of Low-mass Pre-main-sequence Stars in NGC 2264
The Astrophysical JournalInvestigating the angular momentum evolution of pre-main-sequence (PMS) stars provides important insight into the interactions between Sun-like stars and their protoplanetary disks, and the timescales that govern disk dissipation and planet formation. We
Laurin M. Gray +4 more
doaj +1 more source
Magnetospheric accretion in T Tauri stars
EAS Publications Series, 2003 This presentation focuses on the current status of and challenges related to the magnetospheric accretion process in young stars. It also highlights recent efforts to characterize structure and dynamics of the magnetic star-disk interaction region from an observational approach combining various techniques (e.g. spectropolarimetry, interferometry, high-
openaire +2 more sources
Magnetic Fields of T Tauri Stars [PDF]
Symposium - International Astronomical Union, 1997 The magnetic field strengths of several T Tauri stars are derived by measuring the width of unblended Fe I lines of high and low values of geff·λ2 using the autocorrelation function. The T Tauri stars were selected for their low values of v · sin i, and large strengths of the Ca II emission component.
Jim Emerson, Eike W. Guenther
openaire +3 more sources
Pre-main sequence stars in the Lagoon Nebula (M8) [PDF]
, 2006 We report the discovery of new pre-main sequence (PMS) stars in the Lagoon Nebula (M8) at a distance of 1.25 kpc, based on intermediate resolution spectra obtained with the Boller & Chivens spectrograph at the 6.5-m Magellan I telescope (Las Campanas ...
Arias +35 more
core +4 more sources
Gender &History, Volume 37, Issue 2, Page 684-699, July 2025.Abstract This article uses election addresses to consider how the early women parliamentary candidates sought to make their case to English voters. It then explores the insights that Mass Observation's election surveys offer into public attitudes to women politicians, and gender and political leadership more broadly, from the late 1930s to the early ...
David Thackeray, Lisa Berry‐Waite
wiley +1 more source
The Accretion History of EX Lup: A Century of Bursts, Outbursts, and Quiescence
The Astrophysical Journal, 2023 EX Lup is the archetype for the class of young stars that undergoes repeated accretion outbursts of ∼5 mag at optical wavelengths that last for months.
Mu-Tian Wang +13 more
doaj +1 more source
c2d Spitzer IRS Spectra of Disks around T Tauri Stars. III. [Ne II], [Fe I], and H2 Gas-Phase Lines [PDF]
, 2007 We present a survey of mid-infrared gas-phase lines toward a sample of 76 circumstellar disks around low-mass pre-main-sequence stars from the Spitzer "Cores to Disks" legacy program.
F. Lahuis +5 more
semanticscholar +1 more source
Observational Constraints on the Formation and Evolution of Binary Stars [PDF]
, 2001 We present a high spatial resolution UV to NIR survey of 44 young binary stars in Taurus with separations of 10-1000 AU. The primary results include: (1) The relative ages of binary star components are more similar than the relative ages of randomly ...
A. M. Ghez +37 more
core +3 more sources