Differential photometry of EK DRA and 29 DRA
We report on BVR precise photometry of active late-type stars EK DRA and 29 DRA in the spring of 2004. The analysis suggests a reasonable fit with single spot model for both cases in the season as far as the V-curve is concerned. The spots are generally cooler than surrounding photosphere and are at...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Astronomical Observatory, Department of Astronomy, Belgrade
2005-01-01
|
| Series: | Serbian Astronomical Journal |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-698X/2005/1450-698X0570111Z.pdf |
| _version_ | 1819038114184691712 |
|---|---|
| author | Zboril M. |
| author_facet | Zboril M. |
| author_sort | Zboril M. |
| collection | DOAJ |
| description | We report on BVR precise photometry of active late-type stars EK DRA and 29 DRA in the spring of 2004. The analysis suggests a reasonable fit with single spot model for both cases in the season as far as the V-curve is concerned. The spots are generally cooler than surrounding photosphere and are at high latitudes. The maximal brightness changes for both stars implying a non-rotating component of activity signatures, the spots. We expect that the spot configuration is stable over the period of approximately three months. . |
| first_indexed | 2024-12-21T08:32:10Z |
| format | Article |
| id | doaj.art-8a9dfa6e6db0432c84330bf7015ccbbe |
| institution | Directory Open Access Journal |
| issn | 1450-698X 1820-9289 |
| language | English |
| last_indexed | 2024-12-21T08:32:10Z |
| publishDate | 2005-01-01 |
| publisher | Astronomical Observatory, Department of Astronomy, Belgrade |
| record_format | Article |
| series | Serbian Astronomical Journal |
| spelling | doaj.art-8a9dfa6e6db0432c84330bf7015ccbbe2022-12-21T19:10:11ZengAstronomical Observatory, Department of Astronomy, BelgradeSerbian Astronomical Journal1450-698X1820-92892005-01-01200517011111410.2298/SAJ0570111Z1450-698X0570111ZDifferential photometry of EK DRA and 29 DRAZboril M.0Astronomical Institute, Tatranská LomnicaWe report on BVR precise photometry of active late-type stars EK DRA and 29 DRA in the spring of 2004. The analysis suggests a reasonable fit with single spot model for both cases in the season as far as the V-curve is concerned. The spots are generally cooler than surrounding photosphere and are at high latitudes. The maximal brightness changes for both stars implying a non-rotating component of activity signatures, the spots. We expect that the spot configuration is stable over the period of approximately three months. .http://www.doiserbia.nb.rs/img/doi/1450-698X/2005/1450-698X0570111Z.pdfstars: individual: EK DRA29 DRAstars: late-typestarspots |
| spellingShingle | Zboril M. Differential photometry of EK DRA and 29 DRA Serbian Astronomical Journal stars: individual: EK DRA 29 DRA stars: late-type starspots |
| title | Differential photometry of EK DRA and 29 DRA |
| title_full | Differential photometry of EK DRA and 29 DRA |
| title_fullStr | Differential photometry of EK DRA and 29 DRA |
| title_full_unstemmed | Differential photometry of EK DRA and 29 DRA |
| title_short | Differential photometry of EK DRA and 29 DRA |
| title_sort | differential photometry of ek dra and 29 dra |
| topic | stars: individual: EK DRA 29 DRA stars: late-type starspots |
| url | http://www.doiserbia.nb.rs/img/doi/1450-698X/2005/1450-698X0570111Z.pdf |
| work_keys_str_mv | AT zborilm differentialphotometryofekdraand29dra |