The Megamaser Cosmology Project. XI. A Geometric Distance to CGCG 074-064
نویسندگان
چکیده
منابع مشابه
Distance measures in cosmology
In cosmology (or to be more specific, cosmography, the measurement of the Universe) there are many ways to specify the distance between two points, because in the expanding Universe, the distances between comoving objects are constantly changing, and Earth-bound observers look back in time as they look out in distance. The unifying aspect is that all distance measures somehow measure the separa...
متن کاملfrom linguistics to literature: a linguistic approach to the study of linguistic deviations in the turkish divan of shahriar
chapter i provides an overview of structural linguistics and touches upon the saussurean dichotomies with the final goal of exploring their relevance to the stylistic studies of literature. to provide evidence for the singificance of the study, chapter ii deals with the controversial issue of linguistics and literature, and presents opposing views which, at the same time, have been central to t...
15 صفحه اولGeometric Precipices in String Cosmology
We consider the effects of graviton multiplet fields on transitions between string gas phases. Focusing on the dilaton field, we show that it may obstruct transitions between different thermodynamic phases of the string gas, because the sign of its dimensionally reduced, T -duality invariant, part is conserved when the energy density of the universe is positive. Thus, many interesting solutions...
متن کاملinvestigating the feasibility of a proposed model for geometric design of deployable arch structures
deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
A New Water Vapor Megamaser
We report on the detection of a new megamaser, the 31, 3–22, 0 H2O line ( GHz) in Arp 220, using n p 183.310 0 the Institut de Radioastronomie Millimétrique (IRAM) 30 m telescope. The line is about 350 km s 1 wide with a total luminosity of ∼2.5 # 10 K km s 1 pc. Although OH megamasers were first discovered in this source, no emission is seen in the 61, 6–52, 3 H2O transition ( GHz), a line oth...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2020
ISSN: 1538-4357
DOI: 10.3847/1538-4357/ab6bcd