Trans-Neptunian objects found in the first four years of the Dark Energy Survey
| Autor: | Bernardinelli, Pedro H., Bernstein, Gary M., Sako, Masao, Liu, Tongtian, Saunders, William R., Khain, Tali, Lin, Hsing Wen, Gerdes, David W., Brout, Dillon, Adams, Fred C., Belyakov, Matthew, Somasundaram, Aditya Inada, Sharma, Lakshay, Locke, Jennifer, Franson, Kyle, Becker, Juliette C., Napier, Kevin, Markwardt, Larissa, Annis, James, Abbott, T. M. C., Avila, S., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Castander, F. J., da Costa, L. N., De Vicente, J., Desai, S., Diehl, H. T., Doel, P., Everett, S., Flaugher, B., García-Bellido, J., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hollowood, D. L., James, D. J., Johnson, M. W. G., Johnson, M. D., Krause, E., Kuropatkin, N., Maia, M. A. G., March, M., Miquel, R., Paz-Chinchón, F., Plazas, A. A., Romer, A. K., Rykoff, E. S., Sánchez, C., Sanchez, E., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Smith, M., Sobreira, F., Suchyta, E., Swanson, M. E. C., Tarle, G., Walker, A. R., Wester, W., Zhang, Y. |
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| Rok vydání: | 2019 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.3847/1538-4365/ab6bd8 |
| Popis: | We present a catalog of 316 trans-Neptunian bodies detected by the Dark Energy Survey (DES). These objects include 245 discoveries by DES (139 not previously published) detected in $\approx 60,000$ exposures from the first four seasons of the survey ("Y4" data). The survey covers a contiguous 5000 deg$^2$ of the southern sky in the $grizY$ optical/NIR filter set, with a typical TNO in this part of the sky being targeted by $25-30$ Y4 exposures. We describe the processes for detection of transient sources and the linkage into TNO orbits, which are made challenging by the absence of the few-hour repeat observations employed by TNO-optimized surveys. We also describe the procedures for determining detection efficiencies vs. magnitude and estimating rates of false-positive linkages. This work presents all TNOs which were detected on $\ge 6$ unique nights in the Y4 data and pass a "sub-threshold confirmation" test wherein we demand the the object be detectable in a stack of the individual images in which the orbit indicates an object should be present, but was not detected. This eliminates false positives and yields TNO detections complete to $r\lesssim 23.3$ mag with virtually no dependence on orbital properties for bound TNOs at distance $30\,{\rm AU} Comment: 33 pages, accepted to ApJS, table of objects found in the ancillary files |
| Databáze: | arXiv |
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