Садржај
Слике
Уплоадјуј своје слике
DSS Images Other Images
Везани чланци
New periodic variables from the Hipparcos epoch photometry
Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.
| Untersuchungen an W Ursae Majoris Sternen. I. Mit 6 Textabbildungen
Not Available
| 3 W UMa-type binaries with changing periods.
Not Available
|
Додај нови чланак
Линкови у сродству са темом
Додај нови линк
Чланови следећих група \:
|
Посматрања и Астрометриски подаци
| Сазвежђа: | Цефеј |
| Ректацензија: | 21h03m13.32s |
| Deклинација: | +75°37'14.3" |
| Apparent магнитуда: | 8.058 |
| Даљина: | 178.253 parsecs |
| Proper motion RA: | -12.6 |
| Proper motion Dec: | -29.2 |
| B-T magnitude: | 8.412 |
| V-T magnitude: | 8.088 |
Каталог и designations:
|
