SN2017gxq in NGC 4964

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SN2017gxq in NGC 4964

Postby Robin Leadbeater » Sun Oct 01, 2017 10:00 am

Type 1a
https://wis-tns.weizmann.ac.il/object/2017gxq

_at2017gxq_20170930_812_gelatoplot.png
_at2017gxq_20170930_812_gelatoplot.png (43.66 KiB) Viewed 4201 times


This was discovered by Gaia on 28th at mag 17 but was much brighter last night (~mag 15 or perhaps brighter) last night when I took the spectrum and is still likely to be a few days from max so would be a good early evening standard ALPY candidate.

Robin
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
Robin Leadbeater
 
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Re: SN2017gxq in NGC 4964

Postby Robin Leadbeater » Sun Oct 01, 2017 1:24 pm

I just heard that my classification triggered SWIFT observations last night by a team who are following up all nearby 1a supernovae :-)

Robin
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
Robin Leadbeater
 
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Re: SN2017gxq in NGC 4964

Postby etienne bertrand » Sun Oct 01, 2017 7:22 pm

Super belle découverte et beau spectre !!
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Re: SN2017gxq in NGC 4964

Postby Robin Leadbeater » Tue Oct 03, 2017 12:00 am

Now near maximum at a reported ~mag 14

Robin
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
Robin Leadbeater
 
Posts: 1805
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Re: SN2017gxq in NGC 4964

Postby Robin Leadbeater » Fri Oct 06, 2017 6:40 pm

Spectrum from last night with standard ALPY 600 compared with SNID best fit which predicts it is just past maximum

sn2017gxq_20171005_SNID.png
sn2017gxq_20171005_SNID.png (39.26 KiB) Viewed 4061 times


Not a difficult target despite the full moon and low altitude at ~35deg (9x600s)

Robin
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
Robin Leadbeater
 
Posts: 1805
Joined: Mon Sep 26, 2011 4:41 pm


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