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From: atel@astronomerstelegram.org
Subject: ATel  17169
Message-Id: <20250507070536.8466328807EC@server.astronomerstelegram.org>
Date: Wed,  7 May 2025 03:05:36 -0400 (EDT)

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ATEL #17169							     ATEL #17169

Title:	Spectroscopic Classification of Astrophysical Transients with
		the Lick Shane Telescope
Author:	K. W. Davis, R. J. Foley (UCSC)
Queries:	kywdavis@ucsc.edu
Posted:	7 May 2025; 00:41 UT
Subjects:Optical, Supernovae, Variables

We report the classifications of astrophysical transients from spectroscopic
observations with the Kast spectrograph on the Shane telescope obtained
on 2025 May 06 UT. The targets were supplied by XOSS, YSE, and ZTF. Targets
were identified using the target management platform YSE-PZ (Coulter et
al., 2023, PASP, 135, 4501). The classifications were performed with SNID
(Blondin & Tonry, 2007, ApJ, 666, 1024).

ZTF25aanxgnn | AT2025igf  | 16:24:04.795 | +28:59:04.86 | 0.06     | Ia
| peak  | (1) 
PS25bss      | AT2025imm  | 11:06:24.930 | +45:30:45.25 | 0.064    | Ia-91bg
| peak  |  
KATS25J001	 | AT2025jpj  | 18:47:34.990 | +29:05:57.90 |          | CV
|       |

Notes: 
When the redshift is given to 2 decimal places, it is derived from the
SN spectrum. Otherwise, the redshift is determined from the host galaxy.
We note an error in our quick-look spectral reduction, where our wavelength
solutions blueward of 5500 A may be incorrect by up to 20 A. This error
also creates an artifact at ~5500 A where the blue and red channels are
combined.

(1) We measure a Si II 6355 velocity of -10,000 km/s.

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