A Systematic Search for Big Dippers in ASAS-SN
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908818765512704 |
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| author | JoHantgen, B. Rowan, D. M. Forés-Toribio, R. Kochanek, C. S. Stanek, K. Z. Shappee, B. J. Dong, Subo Prieto, J. L. Thompson, Todd A. |
| author_facet | JoHantgen, B. Rowan, D. M. Forés-Toribio, R. Kochanek, C. S. Stanek, K. Z. Shappee, B. J. Dong, Subo Prieto, J. L. Thompson, Todd A. |
| contents | Dipper stars are extrinsically variable stars with deep dimming events due to extended, often dusty, structures produced by a wide range of mechanisms such as collisions, protoplanetary evolution or stellar winds. ASAS-SN has discovered 12 dipper-like objects as part of its normal operations. Here we systematically search the $\sim 5.1$ million ASAS-SN targets with $13<g<14$~mag for dippers with $Δg\ge0.3$~mag to identify 4 new candidates. We also discover 15 long-period eclipsing binary candidates. We characterized the 19 new and 12 previously discovered objects using the ASAS-SN light curves and archival multi-wavelength data. We divide them into three categories: long-period eclipsing binaries with a single eclipse (13 total), long-period eclipsing binaries with multiple eclipses (7 total) and dipper stars with dust or disk occultations (11 total). |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_19594 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Systematic Search for Big Dippers in ASAS-SN JoHantgen, B. Rowan, D. M. Forés-Toribio, R. Kochanek, C. S. Stanek, K. Z. Shappee, B. J. Dong, Subo Prieto, J. L. Thompson, Todd A. Solar and Stellar Astrophysics Dipper stars are extrinsically variable stars with deep dimming events due to extended, often dusty, structures produced by a wide range of mechanisms such as collisions, protoplanetary evolution or stellar winds. ASAS-SN has discovered 12 dipper-like objects as part of its normal operations. Here we systematically search the $\sim 5.1$ million ASAS-SN targets with $13<g<14$~mag for dippers with $Δg\ge0.3$~mag to identify 4 new candidates. We also discover 15 long-period eclipsing binary candidates. We characterized the 19 new and 12 previously discovered objects using the ASAS-SN light curves and archival multi-wavelength data. We divide them into three categories: long-period eclipsing binaries with a single eclipse (13 total), long-period eclipsing binaries with multiple eclipses (7 total) and dipper stars with dust or disk occultations (11 total). |
| title | A Systematic Search for Big Dippers in ASAS-SN |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2507.19594 |