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HD 198827


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A catalogue of eclipsing variables
A new catalogue of 6330 eclipsing variable stars is presented. Thecatalogue was developed from the General Catalogue of Variable Stars(GCVS) and its textual remarks by including recently publishedinformation about classification of 843 systems and making correspondingcorrections of GCVS data. The catalogue1 represents thelargest list of eclipsing binaries classified from observations.

Updated Elements for Southern Eclipsing Binaries
Analysis of ASAS-3 data for 442 southern eclipsing binaries yielded 131stars with incorrect periods listed in the GCVS catalog

The close binary system SU Ind
Photometric data on the southern mid-F type close eclipsing binarysystem SU Ind from the Carter Observatory (NZ) were examined, togetherwith a light curve obtained from the Hipparcos Epoch Photometry (HEP)database. The system appears detached, although appreciably evolved fromthe Zero Age Main Sequence. The HEP period must be accurate for its ownepoch, but it is significantly different from the reference (Hoffmeister1956) value. This is difficult to explain, given the uncomplicatednature of the light curve. The apparent discrepancy can be reconciledwith a period that has remained almost constant over the 40 yearinterval between the epochs by assuming some confusion between thealmost equal depth minima. The near-equality of components raises issuesof determinacy in light curve analysis, which are reviewed against thepresentation of relevant numerical curve-fitting details. The system isof physical interest, in that it is close to the start of the `active'range of spectral types. Its stars have relatively rapid rotation speedsand probably shallow convective sub-photospheric layers.

Stars with the Largest Hipparcos Photometric Amplitudes
A list of the 2027 stars that have the largest photometric amplitudes inHipparcos Photometry shows that most variable stars are all Miras. Thepercentage of variable types change as a function of amplitude. Thiscompilation should also be of value to photometrists looking forrelatively unstudied, but large amplitude stars.

Identification of Variable Stars in Indus
Not Available

Near-Contact Binary Systems in the ROSAT All-Sky Survey
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1996ApJ...461..951S&db_key=AST

UBV Observations of SU Ind
Not Available

Near-contact binaries
Not Available

Program of Parallax Measurements from Space for the Nearest Eclipsing Binaries
Not Available

The List of the Nearest and Bright Eclipsing Binaries from the HIPPARCOS Program
Not Available

Statistics of categorized eclipsing binary systems Lightcurve shapes, periods, and spectral types
The statistics of the light curve morphologies, eclipse depths, orbitalperiods, and spectral types of about 1000 eclipsing binary systems areexamined, after attempting to subdivide these binaries into variousbasic evolutionary categories. The applicability of statisticalcriteria, based on light curve morphologies and eclipse depths, for thecategorization of eclipsing binaries has been found more limited thanpreviously believed. In particular, EW-type light curves turn out to begood indicators of contact systems (though not conversely), while EA-and EB-type light curves have little physical significance. Moreover,the study reveals a strong deficit of short-period noncontact systems inthe whole spectral range, together with an underabundance of early-typecontact binaries (compared with the number of late-type contact pairs).Interestingly, the distribution of evolved Algol-type systems isshifted, on average, to periods longer than those of unevolved detachedsystems in the OB and early A spectral range (and to shorter periods inthe F spectral range).

A uvby, beta photometric survey of southern hemisphere
A uvby, beta photometric study of southern hemisphere eclipsing binarystars has been undertaken at Cerro Tololo Inter-American Observatory.The standardized colors and V magnitudes for 288 binaries at quadratureand/or at minimum are presented, along with an indication of theaccuracy of the standardization and photometry. Discussions of theresolving time of the pulse-counting photometers and of the atmosphericextinction at CTIO are included.

A catalogue of parameters for eclipsing binaries
Not Available

Thirty Eclipsing Binaries Probably 100 ps Distant from the Sun
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Ephemerides of eclipsing stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1963AJ.....68..257W&db_key=AST

Bearbeitung des Lichtwechsels von 75 kurzperiodischen veranderlichen Sternen zwischen 25 und 90 sudlicher Deklination.
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Observation and Astrometry data

Constellation:Indien
Right ascension:20h54m41.18s
Declination:-45°43'50.6"
Apparent magnitude:9.571
Proper motion RA:-22.5
Proper motion Dec:-9.1
B-T magnitude:10.121
V-T magnitude:9.617

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 198827
TYCHO-2 2000TYC 8408-1462-1
USNO-A2.0USNO-A2 0375-39133695
HIPHIP 103215

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