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HD 212511


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A 2dF survey of the Small Magellanic Cloud
We present a catalogue of new spectral types for hot, luminous stars inthe Small Magellanic Cloud (SMC). The catalogue contains 4161 objects,giving an order-of-magnitude increase in the number of SMC stars withpublished spectroscopic classifications. The targets are primarily B-and A-type stars (2862 and 853 objects respectively), with oneWolf-Rayet, 139 O-type and 306 FG stars, sampling the main sequence to~mid-B. The selection and classification criteria are described, andobjects of particular interest are discussed, including UV-selectedtargets from the Ultraviolet Imaging Telescope (UIT) experiment, Be andB[e] stars, `anomalous A supergiants' and composite-spectrum systems. Weexamine the incidence of Balmer-line emission, and the relationshipbetween Hγ equivalent width and absolute magnitude for BA stars.

Broadband Photometry of Northern-Hemisphere Luminous Stars. VI. UBV Photometry for 62 case-Hamburg Stars
CCD-based UBV photometry for 62 intrinsically luminous stars (fifty-ninepreviously unobserved photometrically) drawn from volumes I, III, and Vof the Luminous Stars in the Northern Milky Way catalog is reported.These 62 stars include a number of bright giants and supergiants ofspectral types B, A, and F.

The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars
This is the first in a series of two papers that address the problem ofthe physical nature of luminosity classification in the late A-, F-, andearly G-type stars. In this paper, we present precise spectralclassifications of 372 stars on the MK system. For those stars in theset with Strömgren uvbyβ photometry, we derive reddenings andpresent a calibration of MK temperature types in terms of the intrinsicStrömgren (b-y)0 index. We also examine the relationshipbetween the luminosity class and the Strömgren c1 index,which measures the Balmer jump. The second paper will address thederivation of the physical parameters of these stars, and therelationships between these physical parameters and the luminosityclass. Stars classified in this paper include one new λ Bootisstar and 10 of the F- and G-type dwarfs with recently discoveredplanets.

UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars
A database of photoelectric UBV beta photometry for stars listed in theCase-Hamburg northern and southern Milky Way luminous stars surveys hasbeen compiled from the original research literature. Consisting of over16,000 observations of some 7300 stars from over 500 sources, thisdatabase constitutes the most complete compilation of such photometryavailable for intrinsically luminous stars around the Galactic plane.Over 5000 stars listed in the Case-Hamburg surveys still lackfundamental photometric data.

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Observation and Astrometry data

Constellation:Eidechse
Right ascension:22h23m37.19s
Declination:+51°11'44.5"
Apparent magnitude:7.39
Distance:2272.727 parsecs
Proper motion RA:-2.7
Proper motion Dec:-5.5
B-T magnitude:7.595
V-T magnitude:7.407

Catalogs and designations:
Proper Names
HD 1989HD 212511
TYCHO-2 2000TYC 3619-3028-1
USNO-A2.0USNO-A2 1350-16521324
HIPHIP 110543

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