منابع مشابه
Little Dwarf Galaxies Survive within Bigger Dwarfs: Why Some Dwarfs Go Dark and Others Stay Luminous
The Large Magellanic Cloud (LMC) was the largest galaxy in a group of galaxies that entered the Milky Way (MW) system at late times. Seven of the 11 brightest dwarf galaxies of the MW may have been part of this system. The association of dwarfs with the plane of the LMCs orbit has been used to argue that they are formed from tidal debris from LMC and SMC (Kroupa et al. 2005). Instead, we find t...
متن کاملHot Accretion onto White Dwarfs in Quiescent Dwarf Novae
We present dynamically consistent solutions for hot accretion onto unmagnetized, rotating white dwarfs (WDs) in five quiescent dwarf novae. The measured WD rotation rates (and other system parameters) in RX And, SS Cyg, U Gem, VW Hyi and WZ Sge imply spindown of the WD by an extended hot flow emitting most of its X-rays in the vicinity of the stellar surface. In general, energy advection is abs...
متن کاملPleiades Low-mass Brown Dwarfs: the Cluster L Dwarf Sequence
We present a search for low-mass brown dwarfs in the Pleiades open cluster. The identification of Pleiades members fainter and cooler than those currently known allows us to constrain evolutionary models for L dwarfs and to extend the study of the cluster mass function to lower masses. We conducted a 1.8 deg2 near-infrared J-band survey at the 3.5 m Calar Alto Telescope, with completeness Jcpl ...
متن کاملHero worship
This month, as the surest route to public embarassment, I decided to write about scientific heroes. Today’s world is full of talk of mentoring. Graduate students are told to find supervisors who will intellectually nourish them, emotionally support them, and teach them networking and grantspersonship. As I tap away, I can almost hear Uncle Syd muttering that the world is going to the dogs. In h...
متن کاملCelebrity worship, addiction and criminality
Two studies assessed the relationship between celebrity worship and (i) addiction (n 1359) and (ii) criminality (n 2158). Overall Celebrity Attitude Scale (CAS) scores correlated positively with Eysenck Personality Questionnaire Revised (EPQ-R) Addiction and Criminality sub-scale scores. In further support of the absorption addiction model of celebrity worship (McCutcheon, Lange, & Houran, 2002...
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ژورنال
عنوان ژورنال: Nature
سال: 1892
ISSN: 0028-0836,1476-4687
DOI: 10.1038/045269d0