VizieR Online Data Catalog: Opt. & UV evolution of the TDE iPTF15af (Blagorodnova+, 2019)
Abstract
iPTF15af was discovered by the iPTF survey on UTC 2015 January 15.3 (MJD 57037.3).
The transient's host galaxy SDSS J084828.13+220333.4 is located inside the footprint of the Sloan Digital Sky Survey (SDSS) DR12 (V/147). An archival spectrum of the host was obtained on MJD 53379 as part of the SDSS spectroscopic survey. After its discovery, the transient was simultaneously monitored for 3 months in the R band with the Palomar 48-inch telescope (P48) and in the gri bands with the Palomar 60-inch telescope (P60). Simultaneously, we also obtained follow-up photometry in the BVgri bands with Las Cumbres Observatory's 1m telescope in Texas. Following the optical discovery of iPTF15af, we initiated follow-up observations with the Ultra-Violet Optical Telescope (UVOT) on board the Swift satellite. The data were obtained in three successive campaigns in all six UVOT filters. See Table 2. Optical spectra were obtained with the Low Resolution Imaging Spectrometer (LRIS) on the Keck I 10m telescope in 2015 Jan 22, Feb 20, Mar 23, May 16, Jun 13 and 2017 Nov 15 (resolution ~7Å). UV (1145-3145Å) spectroscopy of iPTF15af was obtained (PI S. B. Cenko, proposal GO-13853) with the Space Telescope Imaging Spectrometer (STIS) on the Hubble Space Telescope (HST) on UTC 2015 March 08.1 (MJD 57089.1), at 52 days after discovery. See Section 2.5. We used the X-ray Telescope (XRT) on board the Swift satellite to observe iPTF15af in the 0.3-10.0keV bandpass. See Section 2.6. Radio follow-up observations of iPTF15af were carried out with the Jansky Very Large Array (PI A. Horesh) on UTC 2015 January 31, at 15 days after discovery. The source was not detected in either the C (6.1GHz), or K (22GHz) bands with an rms of 28 and 36uJy, respectively. We retrieved archival mid-IR data prior to and after the event from the WISE survey and the 2017 release of NEOWISE (Mainzer+ 2014, J/ApJ/792/30). Although the NEOWISE light curve shows small variations around the archival value of the source in the allWISE catalog, none of them are more significant than 3σ. (3 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- August 2020
- DOI:
- 10.26093/cds/vizier.18730092
- Bibcode:
- 2020yCat..18730092B
- Keywords:
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- Photometry: UBVRI;
- Photometry: ultraviolet;
- Spectra: optical;
- Spectra: ultraviolet