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21 PsA


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Pushing Technologies: ESO Fibre Laser Development for Laser Guide-Star Adaptive Optics
In the context of developments toward mature Adaptive Optics systems forlarge telescopes, we describe the present activities at ESO in the areaof fibre lasers.

Narrow-band photometry of late-type stars. II
This paper presents extensive narrow-band photometry in the Uppsalasystem supplementing earlier published mesurements so that data now areavailable for all late-type stars brighter than V = 6.05 and a number ofgalactic cluster members. Numerous UBV and BV measurements are alsopublished. The data are used to determine relations for the predictionof UBV intrinsic colors for late-type stars from the narrow-bandmeasurements. The main purpose of the data is to constitute the basisfor the determination of solar-neighborhood space densities of late-typestars, mainly giants of different kinds; these space densities will becombined with narrow-band data for fainter stars in the north Galacticpole region to yield the decrease of space density with distance fromthe galactic plane for many kinds of late-type stars.

E. W. Fick Observatory stellar radial velocity measurements. I - 1976-1984
Stellar radial velocity observations made with the large vacuumhigh-dispersion photoelectric radial velocity spectrometer at FickObservatory are reported. This includes nearly 2000 late-type starsobserved during 585 nights. Gradual modifications to this instrumentover its first eight years of operation have reduced the observationalerror for high-quality dip observations to + or - 0.8 km/s.

Radial velocities of southern stars obtained with the photoelectric scanner CORAVEL. III - 790 late-type bright stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1985A&AS...59...15A&db_key=AST

DDO Observations of Southern Stars
Not Available

Radial velocities of southern HR stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980PASP...92..713B&db_key=AST

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Pozíciós és asztrometriai adatok

Csillagkép:Déli Hal
Rektaszcenzió:22h51m20.90s
Deklináció:-29°32'10.0"
Vizuális fényesség:5.97
Távolság:113.636 parszek
RA sajátmozgás:-8.5
Dec sajátmozgás:-14.9
B-T magnitude:7.131
V-T magnitude:6.088

Katalógusok és elnevezések:
Megfelelő nevek
Flamsteed21 PsA
HD 1989HD 216210
TYCHO-2 2000TYC 6970-272-1
USNO-A2.0USNO-A2 0600-44309920
BSC 1991HR 8693
HIPHIP 112862

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