Electronic Telegram No. 3806 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network SUPERNOVA 2014Q = PSN J08185022+5706029 Tomoki Morokuma and Jian Jiang, Institute of Astronomy, University of Tokyo; Nozomu Tominaga, Konan University; Masaomi Tanaka, National Astronomical Observatory of Japan; Yoshihiko Saito, Tokyo Institute of Technology; Hiroshi Akitaya, Yuki Moritani, Ryosuke Itoh, and Takahiro Ui, Hiroshima University; Hiroyuki Maehara, Kiso Observatory, Institute of Astronomy, University of Tokyo; and Katsuhiko Mameta, Hyogo, Japan, on behalf of the Kiso Supernova Survey (KISS) collaboration, report the discovery of an apparent supernova (mag 19.2) on a g-band CCD image (limiting mag 20.6) taken on Jan. 29.42 UT with the Kiso Wide Field Camera (KWFC; field-of-view 2.1 deg x 2.1 deg) on the 1.05-m Kiso Schmidt telescope at the Kiso Observatory at Nagano, Japan. The new object is located at R.A. = 8h18m50s.20, Decl. = +57d06'02".9 (equinox 2000.0), which is 2".4 west and 2".7 south of the presumed host galaxy (SDSS J081850.49+570605.5; z = 0.046, from the Sloan Digital Sky Survey database). The variable's existence was confirmed with optical three-color (g-, R_c-, and I_c-band) CCD cameras on the MITSuME 50-cm telescope of the Akeno Observatory (Yamanashi, Japan) on Feb. 1.47 UT. The variable was also marginally detected in a g-band KWFC image on Jan. 27.40, but nothing is seen at this position in an image taken on Jan. 6.53 or in the previous Sloan Digital Sky Survey image. Li Zhou, Jun Mo, and Xiaofeng Wang, Tsinghua University (THU); and Tianmeng Zhang, National Astronomical Observatories of China (NAOC), report an independent discovery of this apparent supernova at mag 16.8 on unfiltered CCD images taken on Feb. 8.62 UT using the 0.6-m NAOC Schmidt telescope in the course of the THU-NAOC Transient Survey (TNTS). The object is located at R.A. = 8h18m50s.22, Decl. = +57d06'02".9 (equinox 2000.0), which is 1".1 west and 1".2 north of the center of the galaxy 2MASX J08185043+5706061. Nothing is visible at this position on archival images obtained on Jan. 28 (limiting mag about 20.0) or on from the Palomar Sky Survey. The TNTS images are posted at URL http://www.thca.tsinghua.edu.cn/~wangxf/TNTS/PSNJ08185022+5706029.png. The variable was designated PSN J08185022+5706029 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2014Q based on the spectroscopic confirmation reported below. Additional CCD magnitudes for PSN J08185022+5706029 = SN 2014Q: Feb. 12.406 UT, 17.0 (Joseph Brimacombe, Cairns, Australia; remotely using a 43-cm CDK telescope + STL-6303 camera at the New Mexico Skies observatory near Mayhill, NM, U.S.A.; position end figures 50s.35, 04".1; image posted at URL http://www.flickr.com/photos/43846774@N02/12512466434/); 12.976, 17.4 (Gianluca Masi, Francesca Nocentini, and Patrick Schmeer; remotely with a 43-cm robotic telescope near Ceccano, Italy; position end figures 50s.33, 03".4). E. S. Walker, Yale University; P. A. Mazzali, Liverpool John Moores University, Max-Planck-Institut fuer Astrophysik, Garching, and Istituto Nazionale di Astrofisica (INAF), Padova; E. Pian, Scuola Normale Superiore, Pisa, and Istituto di Astrofisica Spaziale e Fisica Cosmica, INAF, Bologna; Nozomu Tominaga, Konan University; and Nobuharu Ukita and Masaomi Tanaka, National Astronomical Observatory of Japan, report that they obtained a CCD spectrogram of 2014Q (range 350-800 nm) using the DOLORES spectrograph on the Telescopio Nazionale di Galileo (La Palma) on Feb. 5.95 UT. The spectrum is that of a type-Ia supernova. Using the Gelato code (Harutyuyan et al. 2008, A.Ap. 488, 383), the best matches to the spectrum of 2014Q are to those of spectroscopically normal supernovae at 6 to 2 days before maximum light, with the best match being to SN 1994D at 4.3 days before maximum. After correcting for the presumed-host-galaxy redshift (SDSS J081850.34+570604.7; taken as 0.046 from the Tenth Data Release of the Sloan Digital Sky Survey), the absorption minimum of the Si II 635.5-nm line corresponds to a blueshift of 11000 km/s. Optical spectra of this object were also obtained with KOOLS on the Okayama 188-cm telescope on Jan. 30.8 and 31.8, when the continuum was significantly detected. J.-J. Zhang, Yunnan Astronomical Observatory (YNAO); X.-F. Wang, Tsinghua University (THU), report on an optical spectrogram (range 340-870 nm) of PSN J08185022+5706029 = SN 2014Q that was obtained on Feb. 10.87 UT with the 2.4-m telescope (+ YFOSC) at the LiJiang Gaomeigu Station of YNAO. The spectrum is consistent with a type-Ia supernova around maximum. Cross- correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that it matches with SN 2006cf at +2 days. A redshift of 0.046 +/- 0.001 can be inferred for the host galaxy (2MASX J08185043+5706061) based on the narrow emission line. Adopting this redshift for the host galaxy, they measure a velocity of the Si II 635.5-nm absorption feature to be about 10000 km/s. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2014 CBAT 2014 February 16 (CBET 3806) Daniel W. E. Green