Supernova Discoveries from the Pan-STARRS1 Medium Deep Survey
ATel #2397; R. Chornock, R. J. Foley, E. Berger, A. Rest, G. Narayan (Harvard/CfA), M. Huber (JHU), J. Tonry, P. A. Price (IfA/Hawaii), C. Stubbs (Harvard), A. Riess (JHU), W. M. Wood-Vasey (Pitt), S. J. Smartt (Queen's Univ. Belfast), R. P. Kirshner, D. J. Sand, A. M. Soderberg (Harvard/CfA), and the PS1 Builders.
on 23 Jan 2010; 11:30 UT
Credential Certification: Ryan Chornock (chornock@astro.berkeley.edu)
Subjects: Optical, Supernovae, Transient
Referred to by ATel #: 2398
Further to ATels #2214, #2229, and #2249, we report the discovery of supernovae
in Pan-STARRS1 Medium Deep Survey imaging data obtained from 2010 Jan. 10 - Jan.
20 by the 1.8-m PS1 survey telescope on Haleakala, Hawaii. Images were
processed through the Harvard/JHU transient pipeline and 86 good supernova
candidates were identified. Sixteen of these candidates were selected for
spectroscopic followup and have been confirmed using GMOS on the 8-m
Gemini-North and Gemini-South telescopes (PI: Berger) and MagE on the 6.5-m
Magellan Clay telescope (PI: Foley). The first eight are listed below.
| Pan-STARRS Designation |
RA(J2000) |
Dec(J2000) |
Discovery Date (UT) |
Peak Magnitude |
Type |
Redshift |
Age |
Spectrum Date (UT) |
Telescope |
| PS1-1000009 |
02:20:22.959 |
-04:40:21.04 |
Jan. 10 |
r=19.8 |
SN Ia |
0.15 |
+10 days |
Jan. 21 |
Magellan |
| PS1-1000007 |
02:23:30.712 |
-04:38:10.75 |
Jan. 10 |
r=19.6 |
SN Ia |
0.14 |
+2 weeks |
Jan. 21 |
Magellan |
| PS1-1000008 |
02:24:15.946 |
-03:11:11.55 |
Jan. 10 |
r=20.8 |
SN Ia |
0.25 |
+0 days |
Jan. 20 |
Magellan |
| PS1-1000001 |
03:29:48.738 |
-29:04:30.11 |
Jan. 11 |
i=19.7 |
SN II |
0.071 |
young |
Jan. 16 |
Gemini-S |
| PS1-1000004 |
03:33:27.950 |
-28:22:17.57 |
Jan. 11 |
i=21.6 |
SN Ia |
0.231 |
+3 weeks |
Jan. 20 |
Magellan |
| PS1-1000002 |
08:37:02.601 |
+43:44:16.89 |
Jan. 11 |
r=22.5 |
SN IIP |
0.260 |
near max |
Jan. 18 |
Gemini-N |
| PS1-1000003 |
08:37:18.938 |
+44:20:01.44 |
Jan. 11 |
g=20.8 |
SN Ia |
0.15 |
+0 days |
Jan. 18 |
Gemini-N |
| PS1-1000005 |
09:58:59.759 |
+03:09:27.11 |
Jan. 12 |
r=21.1 |
SN Ia |
0.25 |
+0 days |
Jan. 21 |
Magellan |
Redshifts reported with three significant figures were obtained from host galaxy
spectra, while those with two significant digits were determined by
cross-correlation with a library of supernova templates using the SNID code
(Blondin & Tonry 2007, ApJ, 666, 1024). Ages relative to maximum light were
also determined with SNID and generally have an uncertainty of 4 days for SNe Ia.
These discoveries were enabled using the PS1 System operated by the PS1 Science Consortium (PS1SC) and its member
institutions. The PS1 Surveys have been made possible through the combination of
the Institute for Astronomy at the University of Hawaii, The Pan-STARRS Project
Office, the Max-Planck Society and its participating institutes, the Max Planck
Institute for Astronomy, Heidelberg, and the Max Planck Institute for
Extraterrestial Physics, Garching, The Johns Hopkins University, the University
of Durham, the University of Edinburgh, the Queen's University of Belfast, the
Harvard-Smithsonian Center for Astrophysics, the Las Cumbres Observatory Global
Network, and the National Central University of Taiwan.
We thank the staffs at the PS1, Gemini-North, Gemini-South, and Magellan Clay
telescopes for their assistance in obtaining these observations.
Pan-STARRs Acknowledgment and Builders List
