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2 edition of Photometric studies of southern galactic clusters found in the catalog.

Photometric studies of southern galactic clusters

Hill, Graham

Photometric studies of southern galactic clusters

by Hill, Graham

  • 385 Want to read
  • 34 Currently reading

Published by Dept. of Energy, Mines and Resources, Observatories Branch in [Ottawa] .
Written in English

    Subjects:
  • Stars -- Open clusters.,
  • Southern sky (Astronomy)

  • Edition Notes

    Includes bibliographies.

    Statementby Graham Hill and Charles L. Perry.
    SeriesContributions from the Dominion Astrophysical Observatory, Victoria, B.C. ;, no. 134, <141 >, Contributions from the Dominion Astrophysical Observatory, Victoria, B.C. ;, no. 134, etc.
    ContributionsPerry, Charles Lewis.
    Classifications
    LC ClassificationsQB4 .V48 no. 134, etc.
    The Physical Object
    Paginationv. <1-2 >
    ID Numbers
    Open LibraryOL5771787M
    LC Control Number71514840

    Abstract. We present a pilot study of Galactic globular cluster (GC) proper motion (PM) determinations using Gaia data. We search for GC stars in the Tycho- Gaia Astrometric Solution (TGAS) catalog from Gaia Data Release 1 (DR1), and identify five members of NGC (47 Tucanae), one member of NGC (M3), five members of NGC (M4), seven members of NGC , and two members of . The observed clusters represent 75% of the known Galactic globulars with (m-M)_Vlt= mag, cover most of the globular cluster metallicity range ( lt= [Fe/H]lt= ), and span.

    An up-to-date tabular summary of total magnitudes, brightest stars, and journal references is given for all confirmed Galactic globular clusters. The text discusses how the information can be used to plan and analyze visual observations.   Recent advances in instrumentation are driving a renaissance in the study of open clusters. Members of the WIYN collaboration have initiated the WIYN Open Cluster Study, or ''WOCS'', a project dedicated to comprehensive photometric, astrometric, and spectroscopic studies of a select set of open clusters spanning the range of age and metallicity.

    Accurate and deep BVI CCD photometry is presented for the core regions of six southern compact open clusters (supplemented in one case by U and R bands). These clusters generally have only scanty photometric data published, in some case only photoelectric or photographic. Photometric study of the double cluster η εt χ Persei (A. Marco, G. Bernabeu) AA – (). ADS Google Scholar Multicolor photometry of the galactic cluster NGC (M


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Photometric studies of southern galactic clusters by Hill, Graham Download PDF EPUB FB2

Adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86AAuthor: Graham Hill, Charles Lewis Perry.

We present proper motions, radial velocities, and a photometric study of the Galactic open cluster NGCwhich is associated with prominent emission nebulosity and dark molecular clouds. On the basis of the sample of highly probable member stars, the star cluster is found to be at a distance of ± kpc, has an age of around 4 Myr Cited by: 4.

Galaxy clusters contain from hundreds to thousands of the study identified two significant photometric-redshift overdensities around the protocluster region.

When it comes to the southern. Eduardo Bica's research works with 2, citations and 3, reads, including: An Updated Small Magellanic Cloud and Magellanic Bridge Catalog of Star Clusters, Associations, and Related Objects.

An astronomical catalogue is a list or tabulation of astronomical objects, typically grouped together because they share a common type, morphology, origin, means of detection, or method of omical catalogs are usually the result of an astronomical survey of some kind. To test the various formation scenarios, we have conducted a photometric survey of 55 open clusters in the southern sky.

Of these, five clusters are probably not physically associated groups and our results for two other clusters are not reliable, but we identify 52 definite Be stars and an additional Be candidates in the remaining clusters.

Aims: We present abundance analysis based on high resolution spectra of isolated red giant branch (RGB) stars in the Galactic Globular Cluster NGC (M 4). Our aim Photometric studies of southern galactic clusters book to study its star population in the context of the multi-population phenomenon recently discovered to affect some Globular Clusters.

Methods: The data have been collected with FLAMES+UVES, the multi-fiber high resolution. Messier 18 or M18, also designated NGCis an open cluster of stars in the constellation was discovered by Charles Messier in and included in his list of comet-like objects.

From the perspective of Earth, M18 is situated between the Omega Nebula (M17) and the Sagittarius Star Cloud (M24). This is a sparse cluster with a linear diameter of pc, a tidal radius of 7. Book. Full-text available Four-color and Hbeta photometry has been obtained of 33 stars in the southern galactic cluster NGC Multicolour deep CCD photometric study of the moderately.

We present the broad band UBVI CCD photometry in the region of two open star clusters Teutsch 1 and Riddle 4 located in the second Galactic quadrant.

The optical CCD data for these clusters are obtained for the first time. Radii of the clusters are estimated as 3′.5 for both the clusters. Using two color (U - B) versus (B - V) diagram we determined the reddening as E(B - V) = ±   To test the various formation scenarios, we have conducted a photometric survey of 55 open clusters in the southern sky.

Of these, five clusters are probably not physically associated groups and our results for two other clusters are not reliable, but we identify 52 definite Be stars and an additional Be candidates in the remaining clusters. This thesis represents the first wide-field photometric and spectroscopic survey of star clusters in the nearby late-spiral galaxy M This system is the nearest example of a dwarf spiral galaxy, which may have a unique role in the process of galaxy formation and evolution.

We present a UBV CCD photometric study of four open clusters, NGCKing 9, IC and K located between l = 90° and °. All are embedded in a rich Galactic field.

NGC and King 9 are close together in the sky and have similar reddenings. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract. We present UBV photoelectric observations of stars in the field of the southern open cluster NGC The analysis of these data allows to determine that stars are probable members of the cluster main sequence, while 23 are possible members.

The CC and CM diagrams reveal a well-defined main. We present near-infrared J and K photometry obtained with IRAC-2 at the European Southern Observatory for a sample of giant (red giant and asymptotic giant branch) and horizontal branch stars in the 4x4 arcmin^2 central region of the Galactic globular cluster 47 Tuc (NGC ).

Optical V data for stars in common from Bica, Ortolani & Barbuy are also used to study very. 1. Introduction. Among the currently catalogued open clusters 1 (OCs), more than half of them have been poorly studied or even unstudied up to this moment. Therefore, the mere confirmation of the physical reality of an OC candidate means significant contribution to get to know the Galactic OC system better.

dertaken a CCD photometric study of a large area around open clusters using the 2K×2K CCD mounted on the cm Schmidt telescope of the Kiso Observatory which gives ∼ 50 ′× 50 field. Results on few open clusters have been reported by Pandey et al. (,) and Sharma et al.

We also noticed undesired background contami. The study of galactic open clusters is of great interest in several astrophysical aspects.

generated wide field photometric database around 9 open star clusters with the aim to re- 3ESO-MIDAS is developed and maintained by the European Southern Observatory. We present the broad band UBVI CCD photometric investigations in the region of the two open clusters Haffner 11 and Czernik The radii of the clusters are determined as 3 ′.

5 and 3 ′. 0 for Haffner 11 and Czernik 31 respectively. Using two colour (U-B) versus (B-V) diagram we determine the reddening E (B-V) = ± mag and ± mag for the cluster Haffner 11 and Czernik.

The age of the cluster has been estimated to be from as low as 51 myr (by the first photometric study of the cluster, inby Lindoff) to as high as myr (by Battinelli & Capuzzo-Dolcetta, ). ular clusters: general 1. Introduction There are two main properties which make the study of the Galactic globular clusters (GGC) particularly interesting: 1) each cluster (with possible rare exceptions) is made up by a single populationof stars, all born at the same time, in the same place, and out of the same material; 2) GGC stars have the old.

Provenance This table was created by the HEASARC in February based on the list of open clusters given in CDS Catalog J/A+A//A53 files and It was updated in September with additional star clusters from CDS Catalog J/A+A//A51 files and It was further updated in October with 63 additional star clusters from CDS Catalog .A photometric study by Barrado and Byrne in studied stars near the core of the cluster and identified 25 members and 27 possible members.

They estimated the age of the cluster to be mys and its distance to be pc and identified three stars, members and possible members, as variable.