AstroNote 2020-255

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DRAFT
2020-12-14 18:01:01
Type: Object/s-Discovery/Classification
Supernova Hunters Discovery of 24 Optical Transients with Pan-STARRS
Authors: M. Fulton, K. W. Smith (QUB), D. E. Wright (Minnesota), B. Simmons (Lancaster), C. Krawczyk (Portsmouth), M. Huber (IfA, Hawaii), S. Srivastav (QUB), C. Lintott, B. Nicholson, G. Miller (Oxford), L. Galbany (Granada), S. J. Smartt (QUB), K. C. Chambers (IfA, Hawaii), Robin Ince, Trent Burton, Melinda Burton, Joanna Gostling (Cosmic Shambles), O. R. McBrien, D. R. Young, J. Gillanders, S. Sim (QUB), T. de Boer, J. Bulger, J. Fairlamb, C.-C. Lin, T. Lowe, E. Magnier, A. Schultz, R. J. Wainscoat, M. Willman (IfA), T.-W. Chen (Stockholm), C. Stubbs (Harvard), A. Rest (STScI), Rachel Dawes, Liz Dowthwaite, Amy Loeschner, Neil Gage, Meryl Goulbourne, Mark Govier, Christopher G J Kirkland, Victoria Knowles, Henryk Krawczyk, Georgios Lekkas, Safia McGovern, David Maetschke, Matt Masters, Bruce Pawson, Andy Smith, Jennifer S Walsh (Zooniverse volunteers, c/o Oxford Physics)
Source Group: Pan-STARRS1
Abstract:
Here we report the discovery of 24 transient objects as part of the Pan-STARRS Survey for Transients (PSST) found by citizen scientists involved in the Supernova Hunters Zooniverse Project. This took place during the Cosmic Shambles Network 24 hour online event - Nine Lessons and Carols for Socially Distanced People on 2020-12-12. This report includes classifications of 1 SN Ia-91bg-like and 1 SN 87A-like object (at the UH 2.2m telescope on Mauna Kea on 2020-12-13) and 1 CV (Liverpool Telescope on 2020-12-12), along with 21 unclassified transients.

As part of a collaboration with the Cosmic Shambles Network: Nine Lessons and Carols for Socially Distanced People 24 hour event, we report the discovery of 24 optical transients found by citizen scientists using the Supernova Hunters Zooniverse Project.

The transients include 1 SN Ia-91bg-like supernova and 1 SN 87A-like supernova (at the UH 2.2m telescope on Mauna Kea on 2020-12-12) and 1 CV (Liverpool Telescope on 2020-12-12), along with 21 unclassified objects.

The discoveries from this program are a byproduct of the Pan-STARRS NEO survey observations. In normal survey mode, Pan-STARRS takes 4 x 45s exposures in w, i or z each night reaching 5 sigma magnitudes of w<22, i<21 and z<20.5 in each frame (see Chambers et al. 2016, 1612.05560). Operation of the Pan-STARRS1 and Pan-STARRS2 telescopes is primarily supported by the National Aeronautics and Space Administration under Grant No. NNX12AR65G and Grant No. NNX14AM74G issued through the SSO Near-Earth Object Observations Program. Data are processed at Queen's University Belfast enabled through the STFC grants ST/P000312/1 and ST/T000198/1. 

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020acly [PS20mca]06:41:39.290+52:53:36.57CV006:41:39.290+52:53:36.57CV
TNS2020acmr [PS20mcb]04:32:18.970-11:18:18.42SN II-pec0.045APMUKS(BJ) B042957.69-112427.02020acmr is located 1.5 arcsec South, 5.3 arcsec West from the probable host centre.04:32:18.970-11:18:18.42SN II-pec0.04
TNS2020aclx [PS20mbz]00:37:53.521-21:28:18.95SN Ia-91bg-like0.0552MASX J00375274-21282320.0610762020aclx is located 4.3 arcsec North, 10.8 arcsec East (13.7 Kpc) from the probable host centre.00:37:53.521-21:28:18.95SN Ia-91bg-like0.06
TNS2020acmv [PS20mcf]03:31:50.282+15:12:37.88WISEA J033150.06+151236.62020acmv is located 1.1 arcsec North, 3.3 arcsec East from the probable host centre.03:31:50.282+15:12:37.88
TNS2020acmx [PS20mci]09:27:49.810+14:19:34.26SDSS J092749.76+141936.70.1384642020acmx is located 2.5 arcsec South, 0.5 arcsec East (6.2 Kpc) from the probable host centre.09:27:49.815+14:19:34.22
TNS2020aclt [PS20mbx]00:02:10.809-19:49:46.21SDSS J000210.95-194944.92020aclt is located 9.2 arcsec South, 22.5 arcsec East from the probable host centre.00:02:10.809-19:49:46.21
TNS2020acnc [PS20mcn]02:43:26.474+19:38:57.752MASX J02432600+19385882020acnc is located 1.3 arcsec South, 6.9 arcsec East from the probable host centre.02:43:26.474+19:38:57.75
TNS2020acne [PS20mcp]02:48:16.319+19:04:39.602MASX J02481667+19044312020acne is located 3.6 arcsec South, 5.1 arcsec West from the probable host centre.02:48:16.319+19:04:39.60
TNS2020acnd [PS20mco]07:56:26.146+53:00:21.21SDSS J075627.15+530014.40.136342020acnd is located 6.6 arcsec North, 9.5 arcsec West (27.1 Kpc) from the probable host centre.07:56:26.146+53:00:21.21
TNS2020acmz [PS20mck]06:26:36.475+55:44:52.972MASX J06263654+55445942020acmz is located 6.4 arcsec South, 0.4 arcsec West from the probable host centre.06:26:36.475+55:44:52.97
TNS2020acnb [PS20mcm]08:22:42.080-05:54:26.08SDSS J082242.67-055427.92020acnb is located 1.8 arcsec North, 9.0 arcsec West from the probable host centre.08:22:42.080-05:54:26.08
TNS2020acls [PS20mbw]05:24:15.442-15:34:49.19WISEA J052415.53-153450.12020acls is located 0.2 arcsec North, 0.5 arcsec West from the probable host centre.05:24:15.442-15:34:49.19
TNS2020acni [PS20mct]08:36:14.782-13:30:26.652MASXi J0836149-1330262020acni is located 1.1 arcsec South, 2.1 arcsec West from the probable host centre.08:36:14.784-13:30:26.63
TNS2020acmy [PS20mcj]03:11:36.281+07:50:46.642MASX J03113569+07505122020acmy is located 4.6 arcsec South, 8.8 arcsec East from the probable host centre.03:11:36.281+07:50:46.64
TNS2020acmw [PS20mch]09:45:34.790+01:04:51.84SDSS J094534.64+010451.42020acmw is located 0.3 arcsec North, 2.4 arcsec East from the probable host centre.09:45:34.790+01:04:51.84
TNS2020aclp [PS20mbs]03:45:47.875-13:20:10.94APMUKS(BJ) B034327.55-132928.52020aclp is located 0.4 arcsec South, 2.8 arcsec West from the probable host centre.03:45:47.875-13:20:10.94
TNS2020acms [PS20mcc]09:04:26.148+13:18:26.97SDSS J090425.80+131823.90.168912020acms is located 2.9 arcsec North, 4.9 arcsec East (16.5 Kpc) from the probable host centre.09:04:26.148+13:18:26.97
TNS2020aclq [PS20mbt]05:08:04.022-05:25:49.28WISEA J050804.21-052545.72020aclq is located 0.7 arcsec South, 5.6 arcsec East from the probable host centre.05:08:04.022-05:25:49.28
TNS2020acmt [PS20mcd]09:43:13.169+09:47:26.88SDSS J094313.25+094723.52020acmt is located 4.8 arcsec South, 1.7 arcsec West from the probable host centre.09:43:13.169+09:47:26.88
TNS2020aclr [PS20mbu]03:20:46.636+22:34:51.39WISEA J032046.53+223449.42020acmt is located 2.1 arcsec North, 1.4 arcsec East from the probable host centre.03:20:46.636+22:34:51.39
TNS2020acmu [PS20mce]09:15:32.552+12:32:06.34SDSS J091532.65+123201.30.1320712020acmu is located 5.1 arcsec North, 2.3 arcsec West (12.0 Kpc) from the probable host centre.09:15:32.552+12:32:06.34
TNS2020aclu [PS20mby]03:40:15.965-12:01:32.592MASX J03401528-12013202020aclu is located 0.6 arcsec South, 10.0 arcsec East from the probable host centre.03:40:15.965-12:01:32.59
TNS2020acna [PS20mcl]05:30:58.713-14:46:23.85WISEA J053058.97-144625.12020acna is located 1.3 arcsec North, 3.9 arcsec West from the probable host centre.05:30:58.713-14:46:23.85
TNS2020acnh [PS20mcs]04:58:44.140-13:15:34.08WISEA J045844.21-131533.02020acnh is located 1.14 arcsec South, 1.56 arcsec West from the probable host centre.04:58:44.140-13:15:34.08