Type II-P supernova (SN II-P)
abar-now-axtar-e gune-ye II-P
Fr.: supernova de type II-P
A → Type II supernova which reaches a plateau in its → light curve. The vast majority of Type II SNe are characterized by a fast (few days) rise to a flat light curve, most pronounced in the reddest optical bands, with a duration of 80-100 days. This plateau phase is interpreted as the recession of the photosphere as the ejecta expand and cool. The spectra of SNe II-P are typically dominated by strong → P Cygni profiles of hydrogen lines, as well as iron absorption features (for a review, e.g., see Filippenko 1997, ARA&A 35, 309).
goruh-e yekâyi, ~ yekâni
Fr.: groupe unitaire
The set of n × n unitary matrices (→ unitary matrix).
Fr.: en haut
To, toward, or in a more elevated position.
M.E. up(pe) (adv.), O.E. up(p) "to a higher position;" cf. O.Frisian up, O.S. up, M.Du. up, op, O.N. upp; O.H.G. uf; (Ger. auf), Goth. iup.
Bâlâ "up, above, high, elevated, height" (related to boland "high," borz "height, magnitude" (it occurs also in the name of the mountain chain Alborz), Lori dialect berg "hill, mountain;" Mid.Pers. buland "high;" O.Pers. baršan- "height;" Av. barəz- "high, mount," barezan- "height;" cf. Skt. bhrant- "high;" L. fortis "strong" (Fr. & E. force); O.E. burg, burh "castle, fortified place;" Ger. Burg "castle;" Goth. baurgs "city;" E. burg, borough; Fr. bourgeois, bourgeoisie, faubourg); PIE base *bhergh- "high."
1) farâz-padâk; 2) farâz-padâkidan
Fr.: 1) rampe, montée; 2) promouvoir, revaloriser
1a) An incline going up in the direction of movement.
The process by which an area of Earth's crust slowly rises either due to increasing upward force applied from below or decreasing downward force (weight) from above.
1) bârgozâštan; 2) bârgozâri (#)
Fr.: 1) mettre en ligne; 2) mise en ligne
bâlâ (#), zabarin (#)
Higher, as in place, position, pitch, or in a scale.
Fr.: haut du bras
Bâzu "arm," from Mid.Pers. bâzûk "arm;" Av. bāzu- "arm;" Mod.Pers. bâhu "stick, staff; arm;" cf. Skt. bāhu- "arm, forearm;" Gk. pechys "forearm, arm, ell;" O.H.G. buog "shoulder;" Ger. Bug "shoulder;" Du. boeg; O.E. bôg, bôh "shoulder, bough;" E. bough " a branch of a tree;" PIE *bhaghu- "arm").
havâsepehr-e zabarin, javv-e ~
Fr.: atmosphère supérieure
The general term applied to the atmosphere above the → troposphere.
Fr.: culmination supérieure
Same as → superior culmination.
tarâz-e bâlâ (#), ~ zabarin (#)
Fr.: niveau supérieur
In atomic physics, an initial energy state in an emission transition.
hadd-e bâlâ (#), ~ zabarin (#)
Fr.: limite supérieure
Of an integral operator, the point at which the integration ends.
upper main sequence
rešte-ye farist-e zabarin
Fr.: séquence principale supérieure
A → main sequence star with a mass above 1.5 Msun. Upper main sequence stars have high central temperatures so that they produce their energy through the → CNO cycle. The outward energy flux is very high and therefore this flux cannot be maintained by → radiative transfer. Thus, upper main sequence stars have → convective cores. Outside the core, there is a → radiative zone. The mass of the convective core gradually diminishes as the hydrogen is consumed. The surface hydrogen is fully ionized and the → opacity is due to → electron scattering The opacity due to electron scattering.
Fr.: manteau supérieur
upper mass cut-off
bore-ye bâlâyi-ye jerm, ~ zabarin-e ~
Fr.: coupure aux masses élevées
Same as → upper mass limit.
upper mass limit
hadd-e bâlâyi-ye jerm, ~ zabarin-e ~
Fr.: limite supérieure de masses
The highest mass range admitted in a star formation model. The high mass end of the → initial mass function. The upper mass limit is a critical parameter in understanding → stellar populations, → star formation, and → massive star feedback in galaxies.
gozar-e zabarin (#)
Fr.: passage supérieur
The movement of a celestial body across a celestial meridian's upper branch. Same as → upper culmination.
Fr.: en amont
1) Toward or in the higher part of a stream; against the current.
Vela supernova remnant
bâzmânde-ye abar-now-axtar-e Bâdbân
Fr.: reste de supernova du Voile
A → supernova remnant located in the southern Milky Way in the constellation → Vela. It has a large angular diameter of about 8° and lies 250 ± 30 pc away (Cha et al. 1999, ApJ 515, L25). Its overall emission is dominated by the interaction of the → supernova blast wave with the → interstellar medium. This SNR is also notable for a number of protrusions extending well beyond its rim, which were suggested to be fragments of ejecta from the supernova explosion. X-ray spectroscopy has since confirmed several of these protrusions to indeed be strongly enriched with ejecta. The age of the SNR is estimated to be ~11,000 years, based on the spin-down rate of the associated → Vela pulsar, but ages as large as 20,000-30,000 years have also been argued.
Fr.: superamas de la Vierge
The irregular supercluster that contains the Virgo cluster and the Local Group. At least 100 galaxy groups and clusters are located within its diameter of 110 million light-years. It is one of millions of superclusters in the observable Universe.