Spectroscopic Classification of Nine Optical Transients with the 2.5-m du Pont Telescope
ATel #11551; Subhash Bose (KIAA-PKU), Tom Holoien (Carnegie), Jose L. Prieto (UDP), Subo Dong, P. Chen (KIAA-PKU), K. Z. Stanek (OSU)
on 20 Apr 2018; 07:46 UT
Credential Certification: Subhash Bose (bose@pku.edu.cn)
Subjects: Optical, Supernovae
We report spectroscopic observations and classifications of optical transients using the du Pont 2.5-m telescope (+ WFCCD) at Las Campanas Observatory. Targets were discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN, Shappee et al. 2014) (ATel #11391, ATel #11343, ATel #11459), Gaia Alerts (http://gsaweb.ast.cam.ac.uk/alerts/alertsindex) and A. Rest et al. (for 2018agk). We used SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) to identify the type, phase, and redshift of the SN spectra.
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Survey Name | IAU Name | Obsv. Date | Spec. Type | Phase | Redshift | Notes
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ASASSN-18ev | SN 2018abn | 2018-03-19.14 | Ia | 7-10 days post max. | 0.039461(NED) | (a)
C17-0010 | SN 2018agk | 2018-03-19.26 | Ia | week before max. | 0.026128(NED) | (a,1)
Gaia18and | SN 2018aau | 2018-03-19.35 | Ia | 2 weeks post max. | 0.043 | (b)
ASASSN-18dj | SN 2018xv | 2018-03-19.06 | Ic-BL | near to post max. | 0.0221 (line) | (c)
ASASSN-18ff | SN 2018agb | 2018-03-20.05 | Ia | pre max. | 0.042006(NED) | (a)
ASASSN-18em | SN 2018zv | 2018-03-20.99 | Ia | 2 weeks post max. | 0.043090(NED) | (a)
Gaia18apz | SN 2018agj | 2018-03-21.15 | Ia-91T | pre max. | 0.0428 (line) | (c,2)
ASASSN-18fm | SN 2018ahv | 2018-03-21.23 | Ia | ---- | 0.051622(NED) | (a)
Gaia18aol | AT 2018ade | 2018-04-10.41 | CV | ---- | ---- |
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(a) The redshift is for the host galaxy from NED. The SNID estimated redshift is consistent with that of the host galaxy.
(b) The redshift is estimated from SNID SN template cross-correlation.
(c) The redshift is estimated from the galaxy emission lines in SN spectra.
(1) The classification is consistent with that reported in ATel #11433.
(2) The classification is broadly consistent with that reported in ATel #11491.
