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The Photometric Variability of Sun-like Stars: Observations and Results, 1984--1995
Using differential Stromgren b, y photometry, we monitored thebrightness variations of 41 program stars and their 73 comparison starsfrom 1984 through 1995. The predominantly main-sequence program starsspanned ranges of temperature and mean chromospheric activity centeredon solar values. About 40% of all the stars showed measurablevariability, typically at levels below 0.01 mag (~1%), on bothnight-to-night and year-to-year timescales. The variability correlatedwith mean chromospheric activity and advancing spectral type. We presentdifferential light curves and statistical descriptions of ourobservations.
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Посматрања и Астрометриски подаци
| Сазвежђа: | Орао |
| Ректацензија: | 18h56m00.49s |
| Deклинација: | +07°07'34.5" |
| Apparent магнитуда: | 7.319 |
| Даљина: | 191.571 parsecs |
| Proper motion RA: | 4.9 |
| Proper motion Dec: | 0.6 |
| B-T magnitude: | 7.675 |
| V-T magnitude: | 7.349 |
Каталог и designations:
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INHABITED SKY
