Results 31 to 40 of about 382,088 (346)

On the model of symbiotic stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1982
AbstractWe discuss conditions necessary for appearance and discovery of the symbiotic star phenomenon within the model of a binary consisting of a red (super)giant 3 Mʘ not filling the Roche lobe and of an accreting hot degenerate CO-dwarf 0.8 Mʘ. Within this model “classical” symbiotic stars may exist only within a narrow region of mass accretion ...
A. V. Tutukov, L. R. Yungelson
openaire   +2 more sources

The new carbon symbiotic star IPHAS J205836.43+503307.2 [PDF]

open access: yes, 2011
We are performing a search for symbiotic stars using IPHAS, the INT Halpha survey of the northern Galactic plane, and follow-up observations. Candidate symbiotic stars are selected on the basis of their IPHAS and near-IR colours, and spectroscopy and ...
A. Englaro   +36 more
core   +1 more source

Correction of UBV Photometry for Emission Lines

open access: yesOpen Astronomy, 2003
We investigate the effect on U,B,V magnitudes of the removal of emission lines from the spectra of some symbiotic stars and novae during their nebular phases.
Skopal A.
doaj   +1 more source

MIR2111-5 locus and shoot-accumulated mature miR2111 systemically enhance nodulation depending on HAR1 in Lotus japonicus

open access: yesNature Communications, 2020
In legumes, shoot-derived signals regulate rhizobial symbiosis to balance the benefits of N2 fixation with the energy costs of nodule production. Here Okuma et al.
Nao Okuma   +3 more
doaj   +1 more source

A symbiotic mosaic [PDF]

open access: yesNature Reviews Microbiology, 2013
Genomic and transcriptomic analyses reveal further genetic complexities in the tripartite nested mealybug symbiosis.
openaire   +3 more sources

The first symbiotic stars from the LAMOST survey

open access: yes, 2015
Symbiotic stars are interacting binary systems with the longest orbital periods. They are typically formed by a white dwarf, a red giant and a nebula. These objects are natural astrophysical laboratories for studying the evolution of binaries.
Chen, Xue-Fei   +10 more
core   +1 more source

Discovery of a Hot Symbiotic Star in the Cold Antarctic Sky: Symbiotics Are Outliers in SkyMapper uvgriz Photometry [PDF]

open access: yes, 2018
Using near-ultraviolet flux excess and variability from the SkyMapper Southern Sky Survey11 as novel diagnostics to search for symbiotic stars?cool giants accreting onto compact objects, typically white dwarfs (WDs), we report that Hen 3-1768 (≡ASAS ...
Bohlsen, T.   +5 more
core   +1 more source

Probiotic and prebiotic utilization in diets for free-range broiler chickens

open access: yesBrazilian Journal of Poultry Science, 2004
This work aimed to evaluate the effects of probiotic associated to prebiotic on performance, carcass and cut yields, qualitative traits of meat, development and score of lesions due to coccidiosis in digestive tract of broiler chickens raised in a free ...
K Pelícia   +9 more
doaj   +1 more source

A search for symbiotic behaviour amongst OH/IR colour mimics

open access: yes, 1994
Recent maser surveys have shown that many potential OH/IR stars have no OH masers in their circumstellar envelopes, despite the modest requirements which should be implicitly met by IRAS colour-selected candidates.
Ivison, R. J., Seaquist, E. R.
core   +2 more sources

Stable Transformation in Lotus japonicus

open access: yesBio-Protocol, 2013
This is a protocol to produce stable transgenic plants in Lotus japonicus, which is established based on methods previously reported (Handberg and Stougaard, 1992; Stiller et al., 1997; Thkjaer et al., 1998) with some modifications.
Takema Sasaki   +2 more
doaj   +1 more source

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