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HD 21882

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The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1995ApJS...99..135A&db_key=AST
Ca II H and K Filter Photometry on the UVBY System. II. The Catalog of Observations Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1995AJ....109.2828T&db_key=AST
Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue. We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
Spectral classification from the ultraviolet line features of S2/68 spectra. III - Early A-type stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978A&AS...33...15C&db_key=AST
Absolute luminosity calibration of Stroemgren's 'late group' A statistical parallax method based on the principle of maximumlikelihood is used to calibrate absolute luminosities for samples ofcooler stars constituting the 'late group' defined by Stromgren (1966).The samples examined include 415 stars of all luminosity classes and asubset comprising 86 main-sequence stars. Linear calibration relationsinvolving the Stromgren beta, (b-y), and bracketted c1 indices arederived which yield mean absolute magnitudes with an accuracy of 0.09magnitude for the overall sample and 0.13 magnitude for themain-sequence subsample. Several second-order relations are considered,and the results are compared with Crawford's (1975) calibrations as wellas with mean absolute magnitudes obtained from trigonometric parallaxes.The possible effect of interstellar absorption on the calibrationrelations is also investigated.
Four-colour and H BET photometry of some bright southern stars- II. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972MNRAS.160..155S&db_key=AST
K-Line Photometry of Southern a Stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971ApJS...23..421H&db_key=AST
Variability of A and F main sequence stars. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971A&A....12..223J&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Irmak
Sað Açýklýk:	03^h29^m55.00^s
Yükselim:	-42Â°38'03.0"
Görünürdeki Parlaklýk:	5.78
Uzaklýk:	62.344 parsek
özdevim Sað Açýklýk:	-58.4
özdevim Yükselim:	-1.9
B-T magnitude:	6.004
V-T magnitude:	5.779

Kataloglar ve belirtme:

Özgün isimleri	(Edit)
HD 1989	HD 21882
TYCHO-2 2000	TYC 7574-1415-1
USNO-A2.0	USNO-A2 0450-01196426
BSC 1991	HR 1075
HIP	HIP 16285

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