Results 111 to 120 of about 48,990 (297)
HCN and C2H2 in the Atmosphere of a T8.5+T9 Brown Dwarf Binary
The Astrophysical Journal LettersT-type brown dwarfs present an opportunity to explore atmospheres teeming with molecules such as H _2 O, CH _4 , and NH _3 , which exhibit a wealth of absorption features in the mid-infrared.
Elisabeth C. Matthews +24 more
doaj +1 more source
Taxonomic reappraisal of the mangrove genus Avicennia (Acanthaceae) in India
Nordic Journal of Botany, EarlyView.A taxonomic reappraisal of the mangrove genus Avicennia in India was undertaken through extensive field surveys and critical examination of herbarium specimens. Three taxa, Avicennia alba, Avicennia marina subsp. marina, and Avicennia officinalis, are described in detail. A synonymic list was compiled using the World Checklist of Vascular Plants (WCVP)
Subrata Mondal, Saikat Naskar
wiley +1 more source
Accretion signatures in the X-shooter spectrum of the substellar companion to SR12
, 2017 About a dozen substellar companions orbiting young stellar objects or pre-main sequence stars at several hundred au have been identified in the last decade.
Bayo, Amelia +7 more
core +1 more source
Oikos, EarlyView.Some prey species have evolved background matching, that is they resemble their surrounding environment in terms of colour and/or brightness. When prey populations inhabit patchy environments, they may even have evolved specialised phenotypes: each phenotype matching a specific subset of patches.
Lilian Cabon, Holger Schielzeth
wiley +1 more source
The Astronomical JournalSpectra of young benchmark brown dwarfs with well-known ages are vital to characterize other brown dwarfs, for which ages are in general not known. These spectra are also crucial to test atmospheric models, which have the potential to provide detailed ...
Elena Manjavacas +9 more
doaj +1 more source
Fates of the sub-stellar objects (FOSSO)
Astronomy & AstrophysicsContext. Understanding the survival and orbital evolution of brown dwarf (BD) companions during the post-main-sequence (MS) evolution of their host stars has become increasingly important, especially following recent discoveries of substellar companions ...
Chen Zhangliang +6 more
doaj +1 more source
People and Nature, EarlyView.Abstract Longer‐term perspectives—equivalent to the lifespans of long‐lived trees—are required to fully inform perceptions of ‘naturalness’ used in woodland conservation and management. Stand‐scale dynamics of an old growth temperate woodland are reconstructed using palaeoecological data.
Annabel Everard +4 more
wiley +1 more source
Physical Parameters and Properties of 20 Cold Brown Dwarfs in JWST
The Astrophysical JournalWe present a comprehensive analysis of 20 T and Y dwarfs using spectroscopy from the Near-Infrared Spectrograph (NIRSpec) CLEAR/PRISM and Mid-Infrared Instrument (MIRI) low-resolution spectrometer instruments on the James Webb Space Telescope.
Zhijun Tu, Shu Wang, Jifeng Liu
doaj +1 more source
Some love them, others hate them: Understanding farmers' tree planting decisions in Scotland
People and Nature, EarlyView.Abstract Agroforestry is increasingly recognized as a sustainable agricultural land use system with potential to sequester carbon, create and repair habitats, enhance biodiversity and offer environmental and socio‐economic benefits, including improved agricultural productivity.
Albert Mvula, Katrin Prager, Josie Geris
wiley +1 more source
, 2007 We have obtained optical spectra of 60 low-mass stars and brown dwarfs in Orion’s Trapezium cluster. Spectral types have been determined using a combination of narrowband indices derived from the spectra. 1. Observations Multi-object optical spectroscopy in the red region was carried out using TAURUS on the AAT and GMOS on Gemini-N on objects selected ...
Riddick, F, Roche, P, Lucas, P
openaire +2 more sources