Classification of Gaia Alerted QSO candidates

ATel #15233; M. Dennefeld (IAP/Paris and Sorbonne University), T. Pursimo (NOT-LaPalma), M. Ward (Univ. of Durham), R. Ojha (NASA-HQ)
on 22 Feb 2022; 14:07 UT
Credential Certification: Michel Dennefeld (dennefel@iap.fr)

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We present further classifications of Gaia Alerted (Hodgkin et al. 2021, A&A, 652, 76) QSO candidates, following previous ATel 15138 and ATel 15155. Spectra were obtained with ALFOSC at the Nordic Optical Telescope with a resolution of ~300, and a spectral range covering from 350 to 960 nm.

 
Gaia Name | IAU Name  | Type | Redshift | Lines seen | 
Gaia19ahj | AT2019abz | QSO  | 0.4208 |  Halpha (FWHM 6900 km/s), [OIII], Hbeta, Hgamma, [NeIII], [OII], [NeV], MgII |    
Gaia19ako | AT2019kx  | QSO  | 0.2523 |  Ha (FWHM 8400 km/s), [NII], [OIII], Hb, Hg  |   
Gaia21cbx | AT2021koh | QSO  | 0.2771 |  Ha (FWHM 3000 km/s), [OIII], Hb  |    
Gaia21cha | AT2021maq | QSO  | 0.5997 |  [OIII], Hb (FWHM 4350 km/s), Hg, MgII   |    
Gaia21dat | AT2021qxs | QSO  | 0.2396 |  Ha (FWHM 3315 km/s), [OIII], Hb, FeII, Hg, Hd, [OII] | 
Gaia21dpz | AT2019tnd | Sey1 | 0.0564 | Ha (FWHM 1400 km/s), [SII], [OI], HeI, [OIII] Hb, Hg, [NeIII], [OII] |  

In addition, two candidates, Gaia19dml (=AT2019nkt) and Gaia19dnw (AT2019npq), are confirmed as QSO's but had already an SDSS spectrum with redshift z = 0.6865 and 0.3786 respectively.