Results 71 to 80 of about 111,392 (348)

Searching for GEMS: Discovery and Characterization of Two Brown Dwarfs Around M Dwarfs

The Astronomical Journal
Brown 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, Tera N. Swaby, Henry A. Kobulnicky, Caleb I. Cañas, Shubham Kanodia, Jessica Libby-Roberts, Andrew Monson, Arvind F. Gupta, William Cochran, Suvrath Mahadevan, Chad Bender, Scott A. Diddams, Samuel Halverson, Andrea S. J. Lin, Maxwell Moe, Joe Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Gudmundur Stefansson   +19 more
doaj   +1 more source

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

The Extreme Microlensing Event OGLE-2007-BLG-224: Terrestrial Parallax Observation of a Thick-Disk Brown Dwarf [PDF]

, 2009
Parallax is the most fundamental technique to measure distances to astronomical objects. Although terrestrial parallax was pioneered over 2000 years ago by Hipparchus (ca.
A. Allan, A. Fukui, A. Gould, A. Korpela, A. Udalski, A. Williams, Alves, An, B. Monard, B. S. Gaudi, B.-G. Park, Bennett, Burgasser, Burgasser, Burgasser, Burrows, C. Coutures, C. H. Ling, C. Han, C. Mottram, C. S. Botzler, C. Snodgrass, C.-U. Lee, D. J. Sullivan, D. L. DePoy, D. M. Bramich, D. P. Bennett, Dong, Dong, E. Kerins, F. Abe, Faherty, Fukui, G. Pietrzyński, G. W. Christie, Gaudi, Gould, Gould, Gould, Gould, Gould, Gould, Gould, H. Calitz, Han, Hardy, Hipparchus of Nicaea, Holz, I. A. Bond, I. A. Steele, I. Soszyński, J. B. Hearnshaw, J. Caldwell, J. McCormick, J. P. Beaulieu, Jaroszynski, K. Furusawa, K. Horne, K. Kamiya, K. Masuda, K. Ohnishi, K. Sahu, K. Ulaczyk, L. Skuljan, M. Albrow, M. Dominik, M. F. Bode, M. J. Burgdorf, M. K. Szymański, M. Kubiak, M. Nagaya, Metchev, N. Miyake, N. Rattenbury, O. Szewczyk, P. C. M. Yock, P. Fouque, P. J. Tristram, P. M. Kilmartin, Poindexter, R. Martin, R. Street, R. W. Pogge, S. N. Fraser, Skruttskie, Snodgrass, Subo Dong, T. Natusch, T. Okumura, T. Sako, T. Sumi, To. Saito, Udalski, Udalski, W. Allen, W. L. Sweatman, W. Lin, Y. C. Perrott, Y. Itow, Y. Matsubara, Y. Muraki, Y. Tsapras, Yoo, Ł. Wyrzykowski   +103 more
core   +5 more sources

SDSS J100711.74+193056.2: A Candidate Common Motion Substellar Companion to the Nearest B-type Star Regulus

The Astronomical Journal
The 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

Brown Dwarf Binaries [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractNearly 500 brown dwarfs have been discovered in recent years. The majority of these brown dwarfs exist in the solar neighborhood, yet determining their fundamental properties (mass, age, temperature & metallicity) has proved to be quite difficult, with current estimates relying heavily on theoretical models.
openaire   +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, Barbara A. Caspers, Isabel Damas‐Moreira   +2 more
wiley   +1 more source

COol Companions ON Ultrawide orbiTS (COCONUTS). III. A Very Red L6 Benchmark Brown Dwarf around a Young M5 Dwarf [PDF]

, 2022
Zhoujian Zhang, Michael C. Liu, Caroline Morley, E. A. Magnier, M. A. Tucker, Zachary P. Vanderbosch, A. Do, B. J. Shappee   +7 more
openalex   +1 more source

A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea

Biological Reviews, EarlyView.
ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson, Ellen Wohl, Laura L. Govers, Oscar Franken, Tjeerd J. Bouma, Han Olff, Britas Klemens Eriksson, Maryann S. Watson, Luísa M.S. Borges, Tjisse van der Heide   +9 more
wiley   +1 more source

The OATMEAL Survey. II. The 3D Spin–Orbit Obliquity of an Eccentric Transiting Brown Dwarf in the Ruprecht 147 Open Cluster

The Astronomical Journal
We present a new analysis of the CWW 89 system as part of the Orbital Architectures of Transiting Massive Exoplanets And Low-mass stars (OATMEAL) survey. The CWW 89 system is a member of the 2.8 Gyr old Ruprecht 147 (NGC 6774) cluster and consists of two
Theron W. Carmichael, Steven Giacalone, Noah Vowell, Daniel Huber, Xian-Yu Wang, Malik Bossett, Luke Handley, Aaron Householder, Yaguang Li, Benjamin J. Fulton, Andrew W. Howard, Howard Isaacson, Samuel Halverson, Arpita Roy   +13 more
doaj   +1 more source

White dwarfs in the WTS: Eclipsing binaries

EPJ Web of Conferences, 2013
We have identified photometric white dwarf candidates in the WFCAM transit survey through a reduced proper motion versus colour approach. Box-fitting with parameters adjusted to detect the unique signature of a white dwarf + planet/brown dwarf transit ...
Burleigh M.R., Koppenhoefer J., Saglia R.P., Steele P.R., Cappetta M.   +4 more
doaj   +1 more source