Spectroscopic Classification of Extragalactic Transients from CRTS

Abstract

Copyright and License

Acknowledgement

CRTS, CSDR1 and CSDR2 are supported by the U.S. National Science Foundation under grant NSF grants AST-1313422, AST-1413600, AST-1518308, and AST-1749235. The CSS survey is funded by the National Aeronautics and Space Administration under Grant No. NNG05GF22G issued through the Science Mission Directorate Near-Earth Objects Observations Program. SGD acknowledges generous support from the Ajax Foundation. AJD
and MC acknowledge partial support by CONICYT’s PCI program through grant DPI20140066. MC is additionally supported by ANID’s FONDECYT Regular grants #1171273 and 1231637; ANID’s Millennium Science Initiative through grants ICN12_009 and AIM23-0001, awarded to the Millennium Institute of Astrophysics (MAS); and ANID’s Basal project FB210003. JLP acknowledges support from ANID, Millenium Science Initiative, AIM23-0001. This work has made use of spectra obtained via WISeREP - https://www.wiserep.org. The Pan-STARRS1 Surveys (PS1) and the PS1 public science archive have been made possible through contributions by the Institute for Astronomy, the University of Hawaii, the PanSTARRS Project Office, the Max-Planck Society and its participating institutes, the Max Planck Institute for Astronomy, Heidelberg and the Max Planck Institute for Extraterrestrial Physics, Garching, The Johns Hopkins University, Durham University, the University of Edinburgh, the Queen’s University Belfast, the Harvard-Smithsonian Center for Astrophysics, the Las Cumbres Observatory Global Telescope Network Incorporated, the National Central University of Taiwan, the Space Telescope Science Institute, the National Aeronautics and Space Administration under Grant No. NNX08AR22G issued through the Planetary Science Division of the NASA Science Mission Directorate, the National Science Foundation Grant No. AST-1238877, the University of Maryland, Eotvos Lorand University (ELTE), the Los Alamos National Laboratory, and the Gordon and Betty Moore Foundation. The Sloan Digital Sky Survey (SDSS) is a joint project of The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The Johns Hopkins University, the Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, University of Pittsburgh, Princeton University, the United States Naval Observatory, and the University of Washington. Funding for the project has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Aeronautics and Space Administration, the National Science Foundation, the U.S. Department of Energy, the Japanese Monbukagakusho, and the Max Planck Society. www.sdss.org is a winner of the Griffith Observatory’s Star Award.

Data Availability

The spectroscopic data used in this paper will be made publicly available from the CRTS release website
(http://nesssi.cacr.caltech.edu/DataRelease/) upon publication and is available request to the corresponding author. Photometric measurements for all CRTS transients is currently public through the same address. Comparison spectra and PanSTARRS photometry are publicly available via WISeREP (https://www.wiserep.org) and MAST (https://archive.stsci.edu/panstarrs/), respectively. SDSS galaxy line measurements are public available via the MPA/JHU catalog (https://wwwmpa.mpa-garching.mpg.de/SDSS/)