Results 101 to 110 of about 172,294 (371)

The CO Outflow Components Ejected by a Recent Accretion Event in B335

open access: yesThe Astrophysical Journal
Protostellar outflows often present a knotty appearance, providing evidence of sporadic accretion in stellar mass growth. To understand the direct relation between mass accretion and ejection, we analyze the contemporaneous accretion activity and ...
Chul-Hwan Kim   +6 more
doaj   +1 more source

A Cre‐dependent lentiviral vector for neuron subtype‐specific expression of large proteins

open access: yesFEBS Letters, EarlyView.
We designed a versatile and modular lentivector comprising a Cre‐dependent switch and self‐cleaving 2A peptide and tested it for co‐expression of GFP and a 2.8 kb gene of interest (GOI) in mouse cortical parvalbumin (PV+) interneurons and midbrain dopamine (TH+) neurons.
Weixuan Xue   +6 more
wiley   +1 more source

First Magnetic Field Detection on a Class I Protostar [PDF]

open access: yes, 2009
Strong stellar magnetic fields are believed to truncate the inner accretion disks around young stars, redirecting the accreting material to the high latitude regions of the stellar surface.
Covey, Kevin R.   +3 more
core   +1 more source

Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS

open access: yesThe Astrophysical Journal, 2023
The Tucana–Horologium association (Tuc-Hor) is a 40 Myr old moving group in the southern sky. In this work, we measure the rotation periods of 313 Tuc-Hor objects with TESS light curves derived from TESS full-frame images and membership lists driven by ...
Mark Popinchalk   +8 more
doaj   +1 more source

Interpreting Spectral Energy Distributions from Young Stellar Objects. II. Fitting Observed SEDs Using a Large Grid of Precomputed Models [PDF]

open access: yes, 2006
We present a method to analyze the spectral energy distributions (SEDs) of young stellar objects (YSOs). Our approach is to fit data with precomputed two-dimensional (2D) radiation transfer models spanning a large region of parameter space.
T. Robitaille   +3 more
semanticscholar   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Probing discs around massive young stellar objects with CO first overtone emission

open access: yes, 2010
We present high resolution (R~50,000) spectroastrometry over the CO 1st overtone bandhead of a sample of seven intermediate/massive young stellar objects.
de Wit, W. J.   +5 more
core   +1 more source

Illuminating Youth: Decades of Mid-infrared Variability and Color Evolution of Young Stellar Objects

open access: yesThe Astrophysical Journal Supplement Series
The variability of young stellar objects (YSOs) is a crucial tool for understanding the mechanisms driving flux changes. In this study, we present an infrared variability analysis of a large sample of over 20,000 candidate YSOs, using data from the ...
Sharma Neha, Saurabh Sharma
doaj   +1 more source

Optically visible post-AGB/RGB stars and young stellar objects in the small magellanic cloud: Candidate selection, spectral energy distributions and spectroscopic examination [PDF]

open access: yes, 2014
We have carried out a search for optically visible post-AGB candidates in the Small Magellanic Cloud (SMC). We used mid-IR observations from the Spitzer Space Telescope to select optically visible candidates with a mid-IR excess.
D. Kamath, P. R. Wood, H. Winckel
semanticscholar   +1 more source

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

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