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The 78th Name-List of Variable Stars
We present the next regular Name-List of variable stars containinginformation on 1706 variable stars recently designated in the system ofthe General Catalogue of Variable Stars.
| HIP 60725 and CU CVn: Two New delta Sct Stars
CCD photometry shows that HIP 60725 and CU CVn are delta Scutivariables.
| 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.
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משמש של הקבוצה הבאה
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תצפית ומידע אסטרומטרי
| קבוצת-כוכבים: | ג'ירף |
| התרוממות ימנית: | 12h26m43.73s |
| סירוב: | +81°28'26.3" |
| גודל גלוי: | 9.181 |
| תנועה נכונה: | 12.4 |
| תנועה נכונה: | -4.1 |
| B-T magnitude: | 9.604 |
| V-T magnitude: | 9.216 |
קטלוגים וכינוים:
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