Results 261 to 270 of about 40,509 (299)

Stellar associations and complexes in M33

Astrophysics and Space Science, 1987
About 460 OB associations were selected by a comparison of theUBV plates. TheUBV photographic photometry of 1944 blue stars in the associations was made. The new associations appear like cores within Humphreys and Sandage's associations. Their star content, size distribution, and mean size ≈80 pc confirm their identity with the OB associations in the ...
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Galactic Clusters and Stellar Associations

2014
A casual glance at the night sky may lead you into believing that stars are solitary, isolated objects, but in fact no star is born in isolation. As we have discussed in previous chapters, the process of star birth takes place in immense interstellar clouds of dust and gas that, depending upon the cloud’s size, can give rise to anything from a few ...
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Relationship between pulsars and stellar associations

Astrophysics, 1997
The spatial distribution of pulsars and stellar associations in the solar neighborhood is investigated on the basis of recent data. The distribution of young pulsars and stellar associations indicates fragments of the spiral structure of the galaxy.
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The Stellar Content of the Orion OB1 Association

Space Science Reviews, 1994
We present a photometric investigation, using the VBLUW system, of the stellar content of Orion OB1. Physical parameters (logg;, logT eff) for the stars are derived with the aid of model atmospheres. From these, visual extinctions, absolute magnitudes and distance moduli are derived. The distance moduli are used to determine membership for the stars in
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Observations of stellar magnetism and associated phenomena

EAS Publications Series, 2013
This paper first surveys how stellar magnetic fields are measured, and especially the impact of the most recent spectropolarimeters on our measurement capabilities. The two main types of stellar magnetism, dynamo and fossil fields, are discussed in a general way. This is followed by a broad survey of the current level of knowledge of magnetic fields in
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Stellar associations in the galaxy NGC 2403

Publications of the Astronomical Society of the Pacific, 1985
Stellar associations in the Sc galaxy NGC 2403 are identified and compared to similar samples in Local Group galaxies. Their properties, including the total number delineated, their sizes, the average number of supergiant stars they contain, and their radial distribution are tabulated and are shown to be similar to those of M33 and the LMC. The stellar
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Stellar Content and Evolution of OB Associations

Publications of the Astronomical Society of the Pacific, 1996
An important goal in astronomy is to understand the star formation process. Studies thereof have led to fairly detailed theoretical knowledge of the formation of individual stars. However, there is no detailed understanding of the origin of global properties of the stellar population, such as the initial mass function.
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Health insurance status and cancer stage at diagnosis and survival in the United States

Ca-A Cancer Journal for Clinicians, 2022
Jingxuan Zhao, Xuesong Han, Leticia M Nogueira   +2 more
exaly  

A cross-population atlas of genetic associations for 220 human phenotypes

Nature Genetics, 2021
Saori Sakaue, Masahiro Kanai, Yosuke Tanigawa   +2 more
exaly  

Plasma proteomic associations with genetics and health in the UK Biobank

Nature, 2023
Benjamin B Sun, Joshua Chiou, Anubha Mahajan   +2 more
exaly