The first stars, known as Population III, produced the first heavy elements, thereby enriching their surrounding pristine gas. However, all previous detections of metals in intergalactic gas clouds find a heavy element enrichment at least 1/1000 times that of the solar environment, which is higher than expected for remnants of Population III stars. ... Finally, I will summarise the prospects for finding similar systems in future surveys. ...

... Specific Integration Kick-off meetings at DFS component level and SCCB meetings must be organized first to prepare this DFS Integration Kick-Off meeting. ... complete list of features / functionalities / performances requirements delivered to SEG . description of all effective testcases to be run by SEG : detailed definition describing what to test and how to test (procedure describing step by step how the test is to be performed, input data, expected results, ...). check that all...

... From Tx manual page 1026 (6-26) . ... 100 KW rf output into dummy load . ... 14.75-16.25 . ... 180+/-100 . ... Broadband amplifier: 90 +50/-20 Watts (70 to 140 W) . page up . ...

Underdetermined sets is a new type of data structures (terms) developed in Actor Prolog . ... The point is that an underdetermined set can include some indefinite rest (a tail) like a list in usual Prolog . At the same time, the order of elements of an underdetermined set can be arbitrary one and it does not affect results of unification of underdetermined sets. Moreover, Actor Prolog guarantees that a rest of an underdetermined set never contains elements that are explicitly given in the set. ...

Next: Procedure for Dealing with Up: scientific Previous: Code of Good Practice . ... Any practice or conduct that seriously deviates from the ethical standards embodied in the Code of Good Practice for Scholarly and Scientific Research for proposing, conducting and publishing scientific research constitutes Scientific Misconduct, and if proven renders the offending member liable to the Observatory's disciplinary procedures. ...

... Description . ... The SCORPIO-2 project: . ... The multi-mode spectrograph SCORPIO-2 was developed using the experience of observations at the 6-m telescope BTA with the SCORPIO focal reducer . ... The focal reducer consists of several units ('floors') mounted in the common case in the following order (from the telescope focal plane): . ... The focal reducer is connected with the platform-adapter which used for guiding by offset stars and for illumination the spectrograph by calibration lamps. ...

... Packet Format . ... The TCC broadcasts UDP packets containing position information. ... Packet Header . ... int4 . ... double . ... pos, vel double . ... pos, vel, time double . ... See the TCC Message Keywords Dictionary for full definitions of most items in the "data" section of the packet. pos, vel double is a structure containing two doubles: "pos" and "vel"; it contains the same information as the TCC's "coordinates" (p,v,t triplets), but with time given by the "TAIDate" entry in the packet. ...

... Basics of Group Theory Definition 1. A group G is a (finite or infinite) set of elements g1 , g2 , g3 , . ... Definition 2. ... Each element of a finite group may be represented as a power or product of powers of a certain finite number of elements cal led generators of the group. ... Point Groups Any transformation which brings a body into coincidence with itself can be decomposed into elementary transformations: 1) rotation about an axis, 2) reflection in a plane, 3) translation by some vector. ...