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Thursday, April 30, 2020 | History

2 edition of Photometric standards in the Magellanic clouds found in the catalog.

Photometric standards in the Magellanic clouds

Christopher John Butler

Photometric standards in the Magellanic clouds

  • 289 Want to read
  • 28 Currently reading

Published by [Institute for Advanced Studies] in Dublin .
Written in English

    Places:
  • Magellanic Clouds.
    • Subjects:
    • Astronomical photometry.,
    • Magellanic Clouds.

    • Edition Notes

      Statement[by] C. J. Butler.
      SeriesCommunications of the Dublin Institute for Advanced Studies., Dunsink Observatory publications ;, v. 1, no. 6, Dunsink Observatory publications ;, vol. 1, no. 6.
      Classifications
      LC ClassificationsQB4 .D935 vol. 1, no. 6, QB851 .D935 vol. 1, no. 6
      The Physical Object
      Pagination134-192 p.
      Number of Pages192
      ID Numbers
      Open LibraryOL5468795M
      LC Control Number73171778


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Photometric standards in the Magellanic clouds by Christopher John Butler Download PDF EPUB FB2

Title: Photometric standards in the Magellanic Clouds. Authors: Butler, C. Publication: Dunsink Obs. Publ., Vol. 1, (No. 6), p. - = Commun. Title:Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM.

Abstract: We present an improved determination of the Hubble constant (H0) from Hubble Space Telescope (HST) observations of 70 long-period Cepheids in the Large Cited by: We present our catalog of U, B, V, and I stellar photometry of the central 64 deg 2 area of the Large Magellanic Cloud.

Internal and external astrometric and photometric tests using existing optical photometry (U, B, and V from Massey's bright star catalog and I from the near-infrared sky survey DENIS) are used to confirm our observational uncertainty estimates.

the Magellanic Clouds. Dwarfs and giants are the main galactic sources seen in front of the Magellanic Clouds (Ruphy et al. Compared to earlier spectroscopic and photometric surveys of Photometric standards in the Magellanic clouds book Magellanic Clouds for red giants and super-giants, and for stars on the AGB, probably we nd a few hundreds times more sources, forCited by: We introduce a new galaxy image decomposition tool, GALPHAT (GALaxy PHotometric ATtributes), to provide full posterior probability distributions and reliable confidence intervals for all model parameters.

GALPHAT is designed to yield a high speed Photometric standards in the Magellanic clouds book accurate likelihood computation, using grid interpolation and Fourier rotation. We benchmark this approach using Author: Martin D.

Weinberg. Following the Shapley tradition, the Magellanic Cloud always received good press from Bart. He and Priscilla did particularly valuable photometric work in a number of prominent clusters and associations, and in drawing people's attention to the unique place that the Magellanic Clouds occupy in galactic and extragalactic research.

Until now this has been accomplished only for stars in globular clusters, which have been considered, by some students of the subject, to be highly specialized regions. There can be no doubt, however, but that the Magellanic Clouds are comparable with star clouds of the Galaxy in practically every by: 1.

clusters (SCs) of the Large Magellanic Cloud (LMC) observed in the Washington photometric system, including 82 clusters very recently studied by us. the clusters’ parameters such as radii, deprojected distances, reddenings, ages and metallicities have been obtained by.

Our analysis uses data from SDSS Data Release 7, selecting candidate Milky-Way-like hosts from the spectroscopic catalog and candidate analogs of the Magellanic Clouds from the photometric catalog.

Our principal result is the probability for a Milky-Way-like galaxy to host N{sub sat} close satellites with luminosities similar to the Magellanic Cited by: We used the red clump stars from the photometric data of the Optical Gravitational Lensing Experiment(OGLE II) survey and the Magellanic Cloud Photometric Survey (MCPS) for both the Clouds to estimate the observed dispersion in Photometric standards in the Magellanic clouds book magnitude and colour distribution of red Photometric standards in the Magellanic clouds book stars is used to estimate the depth, after correcting for population effects, internal.

The old photometry of UBV secondary standards in the Magellanic Clouds (Cousins ) has been revised. New measurements made at Sutherland are presented and analyzed. The old photometry of UBV secondary Photometric standards in the Magellanic clouds book in the Magellanic Clouds (Cousins ) has been revised.

New measurements made Photometric standards in the Magellanic clouds book Sutherland are presented and : A. Cousins. Photometric metallicity map of the Large Magellanic Cloud ellanic Cloud Photometric Survey (MCPS) and Optical Gravitational Lensing Experiment (OGLE III) photometric data.

This is a first of its kind map of metallicity up to a radius of (b) standard stars (Udalski et al. OGLE III covers the bar region as well as. Archival Spitzer Infrared Array Camera (IRAC) and MIPS observations of the Large Magellanic Cloud (LMC) have been used to search for young stellar objects (YSOs).

We have carried out independent aperture photometry of these data and merged the results from different passbands to produce a photometric catalog. Photometric analysis of two eclipsing binaries in the Magellanic Clouds: Authors: Loudon, M.; Budding, E.

The combined evidence shows some disparity with standard MS-like models. It also demonstrates some relative insensitivity of photometric analysis, in isolation, to elucidate clear facts on such possibly atypical remote hot stars.

The Magellanic Clouds Photometric Survey is a 4-band (UBVI) survey of the Large and Small Magellanic Clouds. We provide a catalog of stars in the central 8x8 degrees of the LMC and 4x4 degrees of the SMC, to a typical limiting magnitude of V = 21 (set primarily by crowding). A photometric sequence consisting of 53 stars measured in the V, B, and I bands has been set up in the vicinity of the rich, young Large Magellanic Cloud cluster, NGC Many of these stars.

The World of Galaxies The Magellanic Clouds. The Magellanic Clouds as Late-Type Barred Spirals. Freeman. Pages New Results on the Geometrical Structure of the Small Magellanic Cloud. Photometric Properties of the Galaxy and of Other Galaxies. De Vaucouleurs’s Galaxy. This site uses cookies.

By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies by: This thesis presents the initiation of a multi-site photometric programme to examine the extraordinary behaviour displayed by 18 R Coronae Borealis (RCB) stars in the Magellanic Clouds (MCs).

RCB stars exhibit a unique variability whereby they undergo rapid declines of up to several : Robyn Woollands. The Master Catalogue of stars towards the Magellanic Clouds (MC2) is a multi-wavelength reference catalogue.

The current paper presents the first results of the MC2 project. The catalogue of standard stars presented by Menzies et al. () has been augmented and strengthened with additional data.

The authors present a table of data giving their preferred representation of the UBV(RI) c system. The Galaxy Evolution Exporer (GALEX) has performed unprecedented imaging surveys of the Magellanic Clouds (MC) and their surrounding areas including the Magellanic Bridge (MB) in near-UV (NUV, Å) and far-UV (FUV, Å) bands at 5 ″ resolution.

Substantially more area was covered in the NUV than FUV, particularly in the bright Cited by: A systematic estimation of the line of sight depth in the disk and bar regions of the Large and Small Magellanic Clouds (LMC and SMC) using red clump stars is presented. Aims. We used the red clump stars from the photometric data of the Optical Gravitational Lensing Experiment (OGLE II) survey and the Magellanic Cloud Photometric Survey (MCPS Author: Smitha Subramanian and Annapurni Subramaniam.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Received, accepted Context. A systematic estimation of the line of sight depth in the disk and bar regions of the Large and Small Magellanic Clouds (LMC and SMC) using red clump stars is presented.

Aims. We used the red clump stars from the photometric data of the Optical Gravitational. They have a long history of study, but interest in them has blossomed in the past four decades.

This is the first book to provide a synthesised and comprehensive account of the Magellanic authoritative volume presents the latest understanding of the structure, evolution and dynamics of these satellite by: The Magellanic Clouds continue to play a very important role in our understanding of the Universe.

The fact that they are well observable only from southern latitudes was an important driver in the eastablishment of southern stations of such facilities as the Harvard College Observatory, and made looking at them a major part of the overall. Small Magellanic Cloud Observed area: square degrees of the central parts of the SMC.

About eclipsing systems were discovered and cataloged. The sample might be incomplete because the search was done in the early stage of OGLE-II phase (Udalski et al., ). The catalog will be updated in the near future. • Large Magellanic CloudCited by: 3. UBVRI Photometric Standards (Landolt ) (Landolt) UBV Photometry of Stars with Accurate Positions (Oja ) IR sources in Magellanic Clouds (Schwering+ ) uvby-beta photometry of metal-poor stars (Schuster+ ) Southern Spectrophotometric Standards.

I + II (Hamuy+ ,94). The stellar content in H II regions and young star clusters of the Magellanic Clouds (MC) was studied by using UBV CCD photometry. The purposes of this study are threefold: to investigate the evolution of massive stars in the H II regions and young star cluster; to derive stellar luminosity functions and to determine the stellar initial mass functions; and to study the.

We traced the age of the last star formation event (LSFE) in the inner Large & Small Magellanic Cloud (L&SMC) using the photometric data from the Optical. the Magellanic Clouds, the VISCACHA survey will reach sig-nificantly deeper than previous studies (largely based on the 2MASS, MCPS or the VMC surveys) reaching about V ˇ24 at S/N ˇ, with better spatial resolution (FWHM ˇ) due to the employment of the adaptive optics system.

Even thought. The Magellanic Clouds. [Bengt E Westerlund] Note: Citations are based on reference standards. However, formatting rules can vary widely between applications and fields of interest or study.

this is an important book that will be an indispensable guide and a source of references for the next generation of observers of the clouds of. This thesis presents the initiation of a multi-site photometric programme to examine the extraordinary behaviour displayed by 18 R Coronae Borealis (RCB) stars in the Magellanic Clouds (MCs).

RCB stars exhibit a unique variability whereby they undergo rapid declines of up to several magnitudes. bubble N44 in the Large Magellanic Cloud (LMC) is an-alyzed with CCD photometry. For the bright blue stars spectra in the optical and UV have been taken.

The ob-served U, B,andVmagnitudes and colours are converted to T e and L. From isochrone ts to the colour magnitude diagram(CMD), we nd an age of the association of about 5 to 6 by: We describe our program to find eclipsing massive binaries in the Magellanic Clouds using photometry of regions rich in massive stars, and our spectroscopic follow-up to obtain radial velocities and orbits.

Our photometric campaign identified 48 early-type periodic variables, of which only 15 (31%) were found as part of the microlensing by: The Magellanic Clouds are comprised of two irregular galaxies, the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC), which orbit the Milky Way once every 1, million years and each other once every million years.

Lying only aboutlight years away, they were the closest known galaxies to the Milky Way until recently, when the. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle.

Abstract. We used the red clump stars from the photometric data of the Optical Gravitational Lensing Experiment(OGLE II) survey and the Magellanic Cloud Photometric Survey (MCPS) for both the Clouds to estimate the observed dispersion in the magnitude and colour distribution of red clump stars is used to estimate the depth, after correcting for population Cited by: The Magellanic Clouds Paperback – January 1, by Diane Wakoski (Author) › Visit Amazon's Diane Wakoski Page.

Find all the books, read about the author, and more. See search results for this author. Are you an author. Learn about Author Central 5/5(1). History. The first written record of the Magellanic Clouds was by the Persian astronomer Al Sufi.

In he wrote the Book of Fixed called the Large Magellanic Cloud al-Bakr (the Sheep) "of the southern Arabs". He wrote that the Cloud could not be seen from northern Arabia and Baghdad, but could be seen at the strait of Bab el Mandeb (12°15' N).).

This is the .