VizieR Online Data Catalog: Gaia Alerts with LAMOST and SDSS (Huo+, 2020)
Abstract
We have selected all Alerts appearing in the Gaia Alerts website from the beginning (first one Gaia14aaa, detected on August 30th, 2014), to the end of October 2018 (last one Gaia18dge, detected on October 31st, 2018), that is a total of 6308 candidates. Kostrzewa-Rutkowska et al. (2018, Cat. J/MNRAS/481/307) have investigated the detectability of nuclear transients by Gaia using a method different from the one used for the standard Alerts (AlertPipe) and found 482 candidates in the period ranging from June 2016 to June 2017, only 5 of which were also detected by the standard Gaia AlertPipe system. We have included in our search all candidates from this GNT list. As these authors have, by definition, targeted galaxies only, by cross-matching on source position a Gaia source with the sample of SDSS-DR12 (Alam et al., 2015, Cat. V/147) catalogued galaxies or quasars, each object from their sample already has one associated SDSS entry, but not necessarily a spectrum for classification (they have only 142 spectral classifications, out of 482 objects). We therefore extended the search to find possibly other spectra and characteristics of their objects, and look for long term variability. Our sample has been cross-correlated with the LAMOST DR5 database (http://dr5.lamost.org, Luo et al., 2015, Cat. V/164).
(2 data files).- Publication:
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VizieR Online Data Catalog (other)
- Pub Date:
- July 2020
- Bibcode:
- 2020yCatp017036501H
- Keywords:
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- Stars: variable;
- Galaxies;
- Supernovae;
- QSOs