Night Report 2015-02-17
Observers : Laurent Le Guillou, Sylvain Baumont, Ayan Mitra
Support team : Nicolas Chotard, Pierre François Leget
TAT : L. Galbany, M. Fraser
Clear sky, low wind, 50% to 40% humidity, new moon.
Photometric night, seeing down to 0.4".
(times are in UT)
CALIBRATIONS :
- Evening : EFOSC_bias, EFOSC_FlatSpec, EFOSC_SpecArc
- 23:56 : EFOSC_SkyFlat BVRi
SCIENCE OBSERVATIONS :
--- EFOSC ---
- 00:25 RU152 Photometric Standard Field, UBVRigrz
48% humidity, temperature 14.7º, airmass 1.27, seeing 0.97"
- 00:40 OGLE-2015-SN-043 Follow-up, 3x300s B, 3x200s VRi
- 01:41 STD L745a, Gr11, Gr13, Gr16
- 01:58 PG1047 Photometric Standard Field, UBVRigrz
45% humidity, temperature 15.2º, airmas 2.05, seeing 0.6"
- 02:08 OGLE-2015-SN-035 Follow-up spectrum, 2x1800s Gr13
- 03:17 LSQ15lj Classification, 1500s Gr13
=> SN-Ia +1week, z ~ 0.15 (maybe peculiar, 06gz-like)
- 03:49 LSQ14an Follow-up photometry, 6x200s BVRi dithered.
- 05:30 PG1047 Photometric Standard Field, UBVRigrz
51% humidity, temperature 14.6º, airmass 1.15, seeing 0.41"
- 05:34 image analysis to correct a bit of coma and astigmatism.
- 05:42 STD LTT3864, Gr11, Gr13, Gr16
- 06:02 CSS141223-113342+004332 Classification spectrum, 900s Gr13
=> SN-Ic?, pre-max, z ~ 0.13
- 06:21 PS15aw Classification, 1200s, Gr13
=> SN-Ia, pre-max, z ~ 0.09
- 06:46 LSQ15mj Classification, 1200s Gr13
=> SN-II?, blue continuum, possible broad Balmer P-Cygni.
Galactic Halpha & OIII at z=0.024
- 07:16 LSQ15mc Classification, 2700s Gr13
=> SN-II, young, z ~ 0.055
- 08:08 ASASSN-15bd Follow-up spectra, 2x1500s Gr11 & Gr16
- 09:11 STD EG274, Gr11, Gr13, Gr16
- 09:24 PSNJ19235601-5955321 Classification, 300s Gr13
=> SN-Ia +1 month, z ~ 0.015
CONCLUSIONS :
LSQ15lj : SN-Ia +1week, z ~ 0.15, maybe 06gz-like
CSS141223-113342+004332 : SN-Ic?, pre-max, z ~ 0.13
PS15aw : SN-Ia, pre-max, z ~ 0.09
LSQ15mj : SN-II?, z_gal = 0.024
LSQ15mc : SN-II, young, z ~ 0.055
PSNJ19235601-5955321 : SN-Ia +1 month, z ~ 0.015