Results 71 to 80 of about 111,632 (351)
, 1998 Recent observations of microlensing events in the Large Magellanic Cloud suggest that a sizable fraction of the galactic halo is in the form of Massive Astrophysical Compact Halo Objects (MACHOs). Although the average MACHO mass is presently poorly known, the value $\sim 0.1 M_{\odot}$ looks as a realistic estimate, thereby implying that brown dwarfs ...
DE PAOLIS, Francesco +3 more
openaire +3 more sources
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
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
Discovery of two L & T binaries with wide separations and peculiar photometric properties
, 2011 We present spatially resolved photometric and spectroscopic observations of two wide brown dwarf binaries uncovered by the SIMP near-infrared proper motion survey.
Allen +62 more
core +2 more sources
The Porcupine Survey: A Distributed Survey and WISE Followup [PDF]
, 2007 Spitzer post-cryogen observations to perform a moderate depth survey distributed around the sky are proposed. Field centers are chosen to be WISE brown dwarf candidates, which will typically be 160 µJy at 4.7 µm and randomly distributed around the sky ...
A. K. Mainzer +6 more
core +1 more source
Between public service and market: Portraying the bifront university in a platformized world
British Educational Research Journal, EarlyView.Abstract This paper contributes to the international debate on the changes affecting recruitment and orientation processes toward higher education. Based on qualitative research involving 19 Italian public universities, the study analyses the transformations in communication, recruitment and orientation activities within platformization and increasing ...
Marco Pitzalis +2 more
wiley +1 more source
Searching for GEMS: Discovery and Characterization of Two Brown Dwarfs Around M Dwarfs
The Astronomical JournalBrown dwarfs bridge the gap between stars and planets, providing valuable insight into both planetary and stellar-formation mechanisms. Yet the census of transiting brown-dwarf companions, in particular around M-dwarf stars, remains incomplete. We report
Alexander Larsen +19 more
doaj +1 more source
Time-resolved Optical Polarization Monitoring of the Most Variable Brown Dwarf
The Astronomical Journal, 2023 Recent atmospheric models for brown dwarfs suggest that the existence of clouds in substellar objects is not needed to reproduce their spectra, nor their rotationally induced photometric variability, believed to be due to the heterogeneous cloud coverage
Elena Manjavacas +5 more
doaj +1 more source
The impact of urbanisation on social behaviour: a comprehensive review
Biological Reviews, EarlyView.ABSTRACT Urbanisation is a key driver of global environmental change and presents animals with novel stressors and challenges. It can fundamentally influence social behaviour and has the potential to reshape within‐ and between‐species social interactions. Given the role of social behaviour in reproductive fitness and survival, understanding how social
Avery L. Maune +2 more
wiley +1 more source
The Astronomical JournalThe L9 dwarf SDSS J100711.74+193056.2 is situated 7 $\mathop{.}\limits^{^\circ }$ 5 north of the nearest B-type star Regulus ( d = 24.3 ± 0.2 pc), part of a stellar quadruplet.
Eric E. Mamajek, Adam J. Burgasser
doaj +1 more source