Galaxies
... • Does the Universe have a beginning? An end? What physics processes “caused” the Universe to be what it is? Are other universes possible? Would they look like ours (have the same physics)? • Cosmological Principle - the Universe appears the same from any location - Isotropic - no center -no edge ...
... • Does the Universe have a beginning? An end? What physics processes “caused” the Universe to be what it is? Are other universes possible? Would they look like ours (have the same physics)? • Cosmological Principle - the Universe appears the same from any location - Isotropic - no center -no edge ...
Extrasolar Planets: An Amateur`s Search
... Utilizing each of the four identified planet forming factors of stars, this study completed a series of descriptive statistical distributions designed to summarize the number of stars exhibiting each of the factors. The fifth factor, multiplicity of a star system, is described in quantitative terms ...
... Utilizing each of the four identified planet forming factors of stars, this study completed a series of descriptive statistical distributions designed to summarize the number of stars exhibiting each of the factors. The fifth factor, multiplicity of a star system, is described in quantitative terms ...
Star Formation in the Orion Nebula II: Gas, Dust, Proplyds and
... Because of the diversity of backgrounds of the contributors to these subjects, there is an overabundance of nomenclatures and methods of indicating positions. In this article we try to use a uniform system of designation of objects and most positions of sources are indicated in 2000.0 coordinates. R ...
... Because of the diversity of backgrounds of the contributors to these subjects, there is an overabundance of nomenclatures and methods of indicating positions. In this article we try to use a uniform system of designation of objects and most positions of sources are indicated in 2000.0 coordinates. R ...
A Compilation of Relevant Articles from MMM`s first 25 years, issues
... 1.A. Proxima Centauri, a small red M-type star, is just a little closer than the Alpha Centauri double sun of which it is a distant companion. This system lies 60° below the celestial equator, well below the horizon from most of the USA. 2.A. 106 million times as far as the Moon, and 9,000 times as ...
... 1.A. Proxima Centauri, a small red M-type star, is just a little closer than the Alpha Centauri double sun of which it is a distant companion. This system lies 60° below the celestial equator, well below the horizon from most of the USA. 2.A. 106 million times as far as the Moon, and 9,000 times as ...
thick disk - asteroSTEP
... the rapid chemical evolution which took place in the inner disk before the instability acted ...
... the rapid chemical evolution which took place in the inner disk before the instability acted ...
STEREO observations of long period variables
... been analysed to search for very long period large amplitude stellar variability, finding six new candidates. A total of 85 objects, mostly previously known Mira variables, were found to show convincing variability on time-scales of over a 100 days. These objects range in peak brightness from about ...
... been analysed to search for very long period large amplitude stellar variability, finding six new candidates. A total of 85 objects, mostly previously known Mira variables, were found to show convincing variability on time-scales of over a 100 days. These objects range in peak brightness from about ...
Time Dependence of the Charge Transfer Efficiency on the WFPC2
... obvious (slope = 0.0104 +/- 0.0012), while the increase in X-CTE is much smaller, if there is any significant trend at all (slope = 0.0032 +/- 0.0022). One complicating feature is that while the earlier 5 observations used an exposure time of 14 seconds, the 2 most recent measurements used exposure ...
... obvious (slope = 0.0104 +/- 0.0012), while the increase in X-CTE is much smaller, if there is any significant trend at all (slope = 0.0032 +/- 0.0022). One complicating feature is that while the earlier 5 observations used an exposure time of 14 seconds, the 2 most recent measurements used exposure ...
as a PDF - Research Database
... episodically the temperature becomes sufficiently high to temporarily ignite a helium-burning shell (thermal pulses). This leads to penetration of the convective envelope, allowing for ...
... episodically the temperature becomes sufficiently high to temporarily ignite a helium-burning shell (thermal pulses). This leads to penetration of the convective envelope, allowing for ...
NIR interferometry of the Seyfert galaxy NGC 1068
... ● the innermost region of a pc-scale dusty torus heated by the central source. The dust sublimation radius of NGC 1068 is approximately 0.2 – 1 pc. The northern extended 400 mas structure lies near the western wall of the ionization cone and coincides with the inner radio jet (PA = 11o). The large d ...
... ● the innermost region of a pc-scale dusty torus heated by the central source. The dust sublimation radius of NGC 1068 is approximately 0.2 – 1 pc. The northern extended 400 mas structure lies near the western wall of the ionization cone and coincides with the inner radio jet (PA = 11o). The large d ...
Exposing the hidden white dwarf binary origin by means of a
... initial orbital parameters. Currently there is no complete evolution grid available on which a synthetic binary population could be generated. In the past decade there has been a dramatic rise in the estimated fraction of binary and multiple-star systems within the total stellar content. Therefore, ...
... initial orbital parameters. Currently there is no complete evolution grid available on which a synthetic binary population could be generated. In the past decade there has been a dramatic rise in the estimated fraction of binary and multiple-star systems within the total stellar content. Therefore, ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.