Results 81 to 90 of about 77,155 (253)

Coronae of the Magellanic Clouds [PDF]

open access: yesSymposium - International Astronomical Union, 1984
A hot gaseous corona was postulated by Spitzer (1956) for the Milky Way as a consequence of the detection of cool interstellar clouds (seen in Call absorption) on paths to stars in the Milky Way halo. Halos around extra galactic systems were proposed by Bahcall and Spitzer (1969) as a possible explanation for the wealth of high redshift absorption line
openaire   +2 more sources

Principal sensory experiences of forest visitors in four countries, for evidence‐based nature therapy

open access: yesPeople and Nature, Volume 6, Issue 6, Page 2480-2493, December 2024.
Abstract To advance the theoretical and practical underpinnings for nature therapies, i.e. nature exposure as a means to improve mental health, we compared the most memorable sensory experiences reported by forest tourists in Australia, Chile, China and Japan. Sensory experiences are a fundamental driver of the psychological effects of nature exposure.
Ralf C. Buckley   +2 more
wiley   +1 more source

A Catalogue of Fundamental Data for Classical Cepheids in Our Galaxy [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1985
Fundamental data for 400 classical cepheids have been compiled. The PC-relation is derived and compared with similar relations for the Magellanic Clouds; it is found that the differences are not great.
Chulhee Kim
doaj  

AGB stars in the Magellanic Clouds [PDF]

open access: yes, 1997
Some recent results on AGB research in the Magellanic Clouds are reviewed. Discussed are optical and IRAS based surveys, and recent results from the near-infrared DENIS survey, and ISO observations.
arxiv   +1 more source

A search for star clusters in the outskirts of the Large Magellanic Cloud: indication of clusters in the age gap [PDF]

open access: yes, 2020
The YMCA (Yes, Magellanic Clouds Again) and STEP ({The SMC in Time: Evolution of a Prototype interacting late-type dwarf galaxy) projects are deep g,i photometric surveys carried out with the VLT Survey Telescope (VST) and devoted to study the outskirts of the Magellanic System. A main goal of YMCA and STEP is to identify candidate stellar clusters and
arxiv   +1 more source

The Kinematics of the Magellanic Clouds [PDF]

open access: yesSymposium - International Astronomical Union, 1995
It is essential for our understanding of the evolution of the Magellanic System, comprising the Large and the Small Magellanic Cloud, the Intercloud or Bridge region and the Magellanic Stream, to know its motions in the past. The Clouds have a common envelope of neutral hydrogen; this indicates that they have been bound to each others for a long time ...
openaire   +2 more sources

Chemical Evolution of the Universe and its Consequences for Gravitational‐Wave Astrophysics

open access: yesAnnalen der Physik, Volume 536, Issue 2, February 2024.
Population properties of double compact object mergers (especially binary black holes) are sensitive to the metallicity dependent cosmic star formation history. The uncertainty of this quantity cannot be ignored and makes the interpretation of current gravitational wave observations difficult.
Martyna Chruślińska
wiley   +1 more source

Estimating Unknown Cycles in Geophysical Data

open access: yesEarth and Space Science, Volume 6, Issue 12, Page 2232-2240, December 2019., 2019
Abstract Examples of cyclic (periodic) behavior in geophysical data abound. In many cases the primary period is known, such as in daily measurements of rain, temperature, and sea level. However, many time series of measurements contain cycles of unknown or varying length. We consider the problem of estimating the unknown period in a time series.
Xueheng Shi, Colin Gallagher
wiley   +1 more source

Variation in XCO Factor in N55 Region

open access: yesUniverse
The XCO factor is defined as XCO=N(H2)/W12CO. It is useful for estimating cloud mass. However, there is only limited research on how the XCO factor varies within a single cloud.
Qiang Li   +3 more
doaj   +1 more source

Towards a fundamental astrometric reference system behind the Malleganic clouds : spectroscopic confirmation of new quasar candidates selected in the near-infrared [PDF]

open access: yes, 2016
Quasi-stellar objects (quasars) located behind nearby galaxies provide an excellent absolute reference system for astrometric studies, but they are difficult to identify because of fore- and background contamination.
Bekki, Kenji   +9 more
core   +1 more source

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