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The distance to the LMC from UVBY beta photometry of B stars
The uvby beta photometry of nonsupergiant B stars in the LMC obtainedwith the 3.9-m Anglo-Australian telescope has been combined with earlierdata published on B supergiants to give a distance modulus of 18.3 + or- 0.2, corresponding to a distance of 46 kpc. This result is independentof the methods using Cepheids. It uses the same calibration of theluminosities of B stars as is used to determine the zero-point of theCepheid P/L/C relation in the Galaxy and provides an independent checkof that zero-point within the LMC.
| A distance modulus of the LMC from UVBY beta photometry of B supergiants
Stromgren four-color and H-beta photometry has been obtained for 44 Bsupergiants in the Large Magellanic Cloud. As expected, nearly one-halfof them have beta indices which suggest emission at H-beta. From 24stars which appear to be free from this emission, thebeta/c0/M(v) calibration of Balona and Shobbrook (1984),applied with a correction to the beta index for the mean radial velocityof the LMC stars, indicates a distance modulus of 18.8 + or - 0.3.
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משמש של הקבוצה הבאה
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תצפית ומידע אסטרומטרי
| קבוצת-כוכבים: | מפרש |
| התרוממות ימנית: | 08h08m45.91s |
| סירוב: | -50°29'30.3" |
| גודל גלוי: | 8.135 |
| מרחק: | 500 פארסק |
| תנועה נכונה: | -5 |
| תנועה נכונה: | 5.2 |
| B-T magnitude: | 8.114 |
| V-T magnitude: | 8.134 |
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