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Interstellar Extinction Along the Camelopardalis and Perseus Border
Interstellar extinction in a ~ 100 sq. degree area at theCamelopardalis and Perseus border is investigated. The study is basedon the results of photoelectric photometry of 455 stars in theseven-color Vilnius photometric system published earlier. The nearest100 stars with Hipparcos parallaxes show that the extinction starts togrow at a distance of 110--150 pc. At a distance of 1 kpc theextinction A_V is within 1.2 and 2.4 mag. At larger distances theextinction determination is affected by the limiting magnitude effect.At distances >1.5 kpc a number of O--B stars with the extinctionsbetween 2 and 4 mag are found.
| Photometry and Classification of Stars Along the Camelopardalis and Perseus Border
Seven-color photometry in the Vilnius system for 309 stars down to 12.5mag in the area along the galactic equator near the Camelopardalis andPerseus border is presented. Photometric spectral and luminosity classesof the stars are determined.
| Interstellar Extinction in the Camelopardalis Dark Clouds
An area of about 3times 3 deg in the direction of the Camelopardalisdark clouds is investigated using the Vilnius photometric system.Magnitudes V, color indices, spectral classes, absolute magnitudes,color excesses, interstellar extinctions and distances are determinedfor 126 stars. The interstellar extinction begins at 100 pc distance. Itgrows monotonically and reaches about 2 mag at 300 pc.
| A spectrophotometric survey of stars along the Milky Way. IV
In the present paper a catalogue of spectrophotometric quantities,spectral types, monochromatic magnitudes and colour equivalents is givenfor all stars brighter than the magnitude m4400 = 10.5 in aregion of the Milky Way in Perseus. No absorption is found for starscloser than about r = 100 pc. The absorbing clouds are situated atdistances closer than 1 kpc and at about 2.5 kpc in the local arm andthe Perseus arm, respectively. The space between the two arms is freefrom absorption. It is also concluded that the Perseus arm continuesbeyond l = 140 deg, containing not only hydrogen gas but also dust to atleast l = 150 deg), while the content of OB stars decreases abruptly atl = 140 deg.
| Stellar Spectra in Milky way Regions.VI. a Region in Camelopardalis.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1956ApJS....2..298M&db_key=AST
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Datos observacionales y astrométricos
| Constelación: | Jirafa |
| Ascensión Recta: | 03h38m19.98s |
| Declinación: | +57°41'10.7" |
| Magnitud Aparente: | 8.811 |
| Distancia: | 296.736 parsecs |
| Movimiento Propio en Ascensión Recta: | -4 |
| Movimiento Propio en Declinación: | -2.6 |
| B-T magnitude: | 9.395 |
| V-T magnitude: | 8.86 |
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