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HD 42456

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Mesures de vitesses radiales. VIII. Accompagnement AU sol DU programme d'observation DU satellite HIPPARCOS We publish 1879 radial velocities of stars distributed in 105 fields of4^{\circ} \times 4^{\circ}. We continue the PPO series \cite[(Fehrenbachet al. 1987;]{Feh87} \cite[Duflot et al. 1990, 1992 and 1995),]{Du90}using the Fehrenbach objective prism method. Table 1 only available inelectronic form at CDS via to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
Photometry of F-K type bright giants and supergiants. I - Intermediate band and H-Beta observations Over 1500 observations of 560 bright giants and supergiants of types F-Kare presented and compared to the observations by Gray and Olsen (1991).The present results include intermediate-band which is slightlydifferent from the Stromgren data by Gray and Olsen due to a differentwidth for the v filter. A systematic difference in m(1) - M(1) withdecreasing temperature is noted in the two H-Beta data sets, and thecorrelations are defined.
New UBVRI photometry for 900 supergiants A description is presented of the results obtained in connection with asystematic program of supergiant photometry on the Johnson UBVRI system.During the eight years after the start of the program, almost 1000 starshave been observed, about 400 three or more times each. The originalselection of stars used the spectral type catalog of Jaschek et al.(1964) to choose supergiants. Since observations were possible from bothChile and Canada, no declination limits were imposed, and no particularselection criteria were imposed other than to eliminate carbon stars.These are so red as to require enormous extrapolations of thetransformation equations.
Five-channel photometry of cepheids and supergiants in the southern Milky Way. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976A&AS...24..413P&db_key=AST
On the Existence of Stable Stars in the Cepheid Instability Strip Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971ApJ...168..437F&db_key=AST
Not Available Not Available
Stellar Spectra in Milky way Regions. VIII. a Region in Orion. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1959ApJS....4...23M&db_key=AST
Spectral Classification of Stars Noted on Case Objective Prism Plates. II Not Available

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Avci
Sað Açýklýk:	06^h11^m21.51^s
Yükselim:	+14Â°28'30.2"
Görünürdeki Parlaklýk:	7.595
Uzaklýk:	1265.823 parsek
özdevim Sað Açýklýk:	-3.8
özdevim Yükselim:	-4.3
B-T magnitude:	9.375
V-T magnitude:	7.742

Kataloglar ve belirtme:

Özgün isimleri	(Edit)
HD 1989	HD 42456
TYCHO-2 2000	TYC 742-859-1
USNO-A2.0	USNO-A2 0975-02701098
HIP	HIP 29364

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