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Disks around Young Brown Dwarfs [article]

Michael C. Liu
2002 arXiv   pre-print
This offers compelling evidence of a common origin for most stars and brown dwarfs.  ...  We present some results from a systematic survey for disks around spectroscopically identified young brown dwarfs and very low mass stars.  ...  The latter also shows that brown dwarf disks are at least as long-lived as disks around stars, assuming that the stars and brown dwarfs are roughly coeval.  ... 
arXiv:astro-ph/0207477v1 fatcat:gsr56x4rerfx7lc2svg3v2yo6y

Handling Leakage with Subsystem Codes [article]

Natalie C. Brown, Michael Newman, Kenneth R. Brown
2019 arXiv   pre-print
For H C the computational Hilbert space and H |2 the leakage Hilbert space, this means that any two-qubit gate U factors as U = U H C ⊗H C ⊕ U H C ⊗H |2 ⊕ U H |2 ⊗H C ⊕ U H |2 ⊗H |2 .  ...  The two-qubit gate U H C ⊗H C is the computational gate and U H |2 ⊗H |2 can only apply a harmless phase.  ... 
arXiv:1903.03937v1 fatcat:ae4a2prpurc3zcpq37xm6qjom4

Scientists Under Surveillance: The FBI Files—edited by JPat Brown, B. C. D. Lipton, and Michael Morisy (Cambridge, MA, USA: The MIT Press, 2019, 413 + xix pp.)

James R. Russell
2022 IEEE technology & society magazine  
doi:10.1109/mts.2022.3147523 fatcat:76yks2llurg6tcsrmehibl6qwq

: Primate Communication . Charles T. Snowdon, Charles H. Brown, Michael R. Petersen

John C. Mitani
1984 American Anthropologist  
Brown, and Michael R. Petersen, eds. New York: Cambridge University Press, 1982. xx + 444 pp. $39.50 (cloth). John C.  ... 
doi:10.1525/aa.1984.86.2.02a00790 fatcat:rbkdxbcsdrckbceoukdwz5rgxe

Disks around Young Brown Dwarfs

Michael C. Liu
2003 Symposium - International astronomical union  
This offers compelling evidence of a common origin for most stars and brown dwarfs.  ...  We present some results from a systematic survey for disks around spectroscopically identified young brown dwarfs and very low mass stars.  ...  The latter also shows that brown dwarf disks are at least as long-lived as disks around stars, assuming that the stars and brown dwarfs are roughly coeval.  ... 
doi:10.1017/s0074180900210425 fatcat:k3fbfbu22bgutekyzdfvi7awhi

Bayesian Spectroscopic Characterization of Brown Dwarfs and Implications for Model Atmospheres

Zhoujian Zhang, Michael C. Liu, Mark S. Marley, Michael R. Line, William M. J. Best, Eugene A. Magnier
2021 Zenodo  
Spectroscopic characterization of brown dwarfs is essential for understanding their atmospheres, formation, and evolution, but such work is challenged by the unavoidably simplified model atmospheres needed  ...  Therefore, we are conducting a systematic analysis of a valuable but underutilized resource: the numerous high-quality spectra of (free-floating or companion) brown dwarfs already accumulated by the community  ...  Final OUR FORWARD-MODELING FRAMEWORK The Largest Spectroscopic Analysis of Brown Dwarfs • We study 55 T7-T9 brown dwarfs with IRTF/SpeX spectra and parallaxes. • We find inferred {Teff, log g, Z} errors  ... 
doi:10.5281/zenodo.4563102 fatcat:zutxqosqfvej7exo7bhpdpappu

Erratum: Errata

A. M. C. Şengör, Michael Brown
1985 Nature  
Specifically. suppose o: has continued fraction [a,b,c, ... ] . then the smaller that the entries a,b,c, ... are. the more irrational is a.  ...  In Michael Brown's article "Tectonics of metamorphism" (28 Novemher. p.314). the wrong photomicrograph was used to illustrate Fig.2.  ... 
doi:10.1038/318512b0 fatcat:a4ltsf7eu5dv7meqfb7omlv74u

Neuronal Cell Death

Michael Fricker, Aviva M. Tolkovsky, Vilmante Borutaite, Michael Coleman, Guy C. Brown
2018 Physiological Reviews  
L Fricker M, Tolkovsky AM, Borutaite V, Coleman M, Brown GC.  ...  C.  ...  Bal-Price A, Matthias A, Brown GC. Stimulation of the NADPH oxidase in activated rat microglia removes nitric oxide but induces peroxynitrite production.  ... 
doi:10.1152/physrev.00011.2017 pmid:29488822 fatcat:ujlz4dldrzaxplorj6g2bjmmyy

Discovery of a Bright Field Methane (T-Type) Brown Dwarf by 2MASS

Adam J. Burgasser, John C. Wilson, J. Davy Kirkpatrick, Michael F. Skrutskie, Michael R. Colonno, Alan T. Enos, J. D. Smith, Charles P. Henderson, John E. Gizis, Michael E. Brown, James R. Houck
2000 Astronomical Journal  
We report the discovery of a bright (J = 13.83±0.03) methane brown dwarf, or T dwarf, by the Two Micron All Sky Survey.  ...  This object, 2MASSI J0559191-140448, is the first brown dwarf identified by the newly commissioned CorMASS instrument mounted on the Palomar 60-inch Telescope.  ...  C. W. acknowledges support by NASA grant NAG 5-4376.  ... 
doi:10.1086/301475 fatcat:xd2xpbmm4zforahezi5v3mjaqq

Testing Models with Brown Dwarf Binaries

Trent J. Dupuy, Michael C. Liu
2009 Proceedings of the International Astronomical Union  
Finally, as the sample of binaries with measured orbits grows, novel tests of brown dwarf formation theories are made possible (e.g., testing theoretical eccentricity distributions).  ...  temperatures inferred from evolutionary model radii can be inconsistent with temperatures derived from fitting observed spectra with atmospheric models by at most 100–300 K. (3) For the single pair of field brown  ... 
doi:10.1017/s1743921310011439 fatcat:4uh46xs7tvf7xmpk574f3gywme

MAPPING THE SHORES OF THE BROWN DWARF DESERT. IV. OPHIUCHUS

Anthony C. Cheetham, Adam L. Kraus, Michael J. Ireland, Lucas Cieza, Aaron C. Rizzuto, Peter G. Tuthill
2015 Astrophysical Journal  
We find that 43+/-6% of the 114 stars in our survey have stellar mass companions between 1.3-780AU, while 7 (+8 -5)% host brown dwarf companions in the same interval.  ...  This phenomenon has been labelled the "brown dwarf desert".  ...  We detect no additional brown dwarf companions to our targets.  ... 
doi:10.1088/0004-637x/813/2/83 fatcat:t6apmt5iajal5hs6ubieb4feyq

Evidence-based Emergency Medicine. Edited by Brian H. Rowe, Eddy S. Lang, Michael Brown, Debra Houry, David H. Newman, Peter C. Wyer. 2009. Published by Wiley-Blackwell. Clothbound, 658 pp. US$275.00

James Ducharme
2009 CJEM: Canadian Journal of Emergency Medical Care  
doi:10.1017/s148180350001188x fatcat:kda5ps4nznc7nnez3wqhmo2tqe

BROWN DWARFS IN YOUNG MOVING GROUPS FROM PAN-STARRS1. I. AB DORADUS

Kimberly M. Aller, Michael C. Liu, Eugene A. Magnier, William M. J. Best, Michael C. Kotson, William S. Burgett, Kenneth C. Chambers, Klaus W. Hodapp, Heather Flewelling, Nick Kaiser, Nigel Metcalf, John L. Tonry (+2 others)
2016 Astrophysical Journal  
We also find four field brown dwarfs unassociated with the AB Dor Moving Group, three of which have INT-G gravity classification.  ...  Substellar members of young (≲150 Myr) moving groups are valuable benchmarks to empirically define brown dwarf evolution with age and to study the low-mass end of the initial mass function.  ...  C.  ... 
doi:10.3847/0004-637x/821/2/120 fatcat:6u3uxmzuzrhtrdppabpvbivtgy

Fundamental Properties of Low-Mass Stars and Brown Dwarfs [article]

Michael C. Liu, France Allard, M. Bonnefoy , Trent J. Dupuy, Mercedes Lopez-Morales
2008 arXiv   pre-print
Precise measurements of the fundamental properties of low-mass stars and brown dwarfs are key to understanding the physics underlying their formation and evolution.  ...  Thus, measuring the differential lithium depletion between B and C will provide a uniquely discriminating test of theoretical models.  ...  The age of the system would have to be notably younger than the gyro age to ameliorate the luminosity disagreement. (2) Effective temperatures derived from evolutionary models for HD 130948B and C are  ... 
arXiv:0810.1054v1 fatcat:uihli5jiazbppjwm25hdebqr34

Dipole-phonon quantum logic with alkaline-earth monoxide and monosulfide cations [article]

Michael Mills, Hao Wu, Evan C. Reed, Lu Qi, Kenneth R. Brown, Christian Schneider, Michael C. Heaven, Wesley C. Campbell, Eric R. Hudson
2020 arXiv   pre-print
(c) ω (1) mol = ω (2) mol + 2π · 20 kHz and |ψ mol (0) = 2 3 |ef + 1 3 e iπ/4 |fe .  ...  For the second method, shown in (c) and (d), we adiabatically vary the difference in molecular splitting.  ... 
arXiv:2008.09201v1 fatcat:2ukh3l6575grrbpblj5el3w3bi
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