Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/32605
Titolo: | Variability and transient search in the SUDARE-VOICE field: a new method to extract the light curves | Autori: | Liu, Dezi Deng, Wenqiang Fan, Zuhui Fu, Liping COVONE, GIOVANNI VACCARI, MATTIA RADOVICH, MARIO CAPACCIOLI, Massimo De Cicco, Demetra GRADO, ANIELLO MARCHETTI, LUCIA NAPOLITANO, NICOLA ROSARIO Paolillo, Maurizio Pignata, Giuliano RAGOSTA, Fabio |
Data pubblicazione: | 2020 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 493 | Fascicolo: | 3 | Da pagina:: | 3825 | Abstract: | The VLT Survey Telescope (VST) Optical Imaging of the CDFS and ES1 Fields Survey, in synergy with the SUDARE survey, is a deep optical ugri imaging of the CDFS and ES1 fields using the VST. The observations for the CDFS field comprise about 4.38 deg<SUP>2</SUP> down to r ∼ 26 mag. The total on-sky time spans over 4 yr in this field, distributed over four adjacent sub-fields. In this paper, we use the multiepoch r-band imaging data to measure the variability of the detected objects and search for transients. We perform careful astrometric and photometric calibrations and point spread function modelling. A new method, referring to as differential running-average photometry, is proposed to measure the light curves of the detected objects. With the method, the difference of PSFs between different epochs can be reduced, and the background fluctuations are also suppressed. Detailed uncertainty analysis and detrending corrections on the light curves are performed. We visually inspect the light curves to select variable objects, and present some objects with interesting light curves. Further investigation of these objects in combination with multiband data will be presented in our forthcoming paper. | URI: | http://hdl.handle.net/20.500.12386/32605 | URL: | https://academic.oup.com/mnras/article/493/3/3825/5762785 http://arxiv.org/abs/2002.08745v1 |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/staa558 | Bibcode ADS: | 2020MNRAS.493.3825L | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
2002.08745.pdf | preprint | 2.26 MB | Adobe PDF | Visualizza/apri |
staa558.pdf | Pdf editoriale | 6.97 MB | Adobe PDF | Visualizza/apri |
Page view(s)
53
controllato il 19-apr-2024
Download(s)
65
controllato il 19-apr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.