تقرير
The ASAS-SN Catalog of Variable Stars V: Variables in the Southern Hemisphere
| العنوان: | The ASAS-SN Catalog of Variable Stars V: Variables in the Southern Hemisphere |
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| المؤلفون: | Jayasinghe, T., Stanek, K. Z., Kochanek, C. S., Shappee, B. J., Holoien, T. W. -S., Thompson, Todd A., Prieto, J. L., Dong, Subo, Pawlak, M., Pejcha, O., Shields, J. V., Pojmanski, G., Otero, S., Hurst, N., Britt, C. A., Will, D. |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | The All-Sky Automated Survey for Supernovae (ASAS-SN) provides long baseline (${\sim}4$ yrs) light curves for sources brighter than V$\lesssim17$ mag across the whole sky. As part of our effort to characterize the variability of all the stellar sources visible in ASAS-SN, we have produced ${\sim}30.1$ million V-band light curves for sources in the southern hemisphere using the APASS DR9 catalog as our input source list. We have systematically searched these sources for variability using a pipeline based on random forest classifiers. We have identified ${\sim} 220,000$ variables, including ${\sim} 88,300$ new discoveries. In particular, we have discovered ${\sim}48,000$ red pulsating variables, ${\sim}23,000$ eclipsing binaries, ${\sim}2,200$ $\delta$-Scuti variables and ${\sim}10,200$ rotational variables. The light curves and characteristics of the variables are all available through the ASAS-SN variable stars database (https://asas-sn.osu.edu/variables). The pre-computed ASAS-SN V-band light curves for all the ${\sim}30.1$ million sources are available through the ASAS-SN photometry database (https://asas-sn.osu.edu/photometry). This effort will be extended to provide ASAS-SN light curves for sources in the northern hemisphere and for V$\lesssim17$ mag sources across the whole sky that are not included in APASS DR9. Comment: 17 pages, 14 figures. Accepted by MNRAS |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1093/mnras/stz2711 |
| URL الوصول: | http://arxiv.org/abs/1907.10609 |
| رقم الأكسشن: | edsarx.1907.10609 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1093/mnras/stz2711 |
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