Object properties

This page provides details for the Target and Alert team about the basic light curve and host parameters of ePESSTO science group targets. If you are the science P.I. of an ePESSTO science project, please add details in the table below for your transient classes.  If a category doesn't apply to your science case, just leave it blank.

Some general notes on classification of objects that are in GW contours, or are for the ATLAS volume limited rates project :
Transients within GW countours :  
Put them as medium priority, if there are really good candidates we will up them to high priority of course. 
These will all get published, as we are classifying objects in the high significance contours of high significance events. One may turn out to be of interest, but for now, we are confusion limited. 

Spectra will be useful - so keep as medium

And observe when likely mag is above our classification limit. 

Old and faint targets -  If they are older than 2 weeks since discovery and have only one or two lightcurve points at r ~ 20-21 and hence a lightcurve trend (rising or falling) cannot be established, then put them as low.  But do not archive them. Unless someone from the GW teams says otherwise. 

ATLAS Volume limited rates project :

If in galaxy which has a z < 0.03 then put as high. If z unknown, and nothing else remarkable,  leave as medium.   Even if they are older than 2-3 weeks, keep them in the marshall as medium. 

Spectra will be useful - so do keep as medium, but give higher priority to good, rising targets and targets in table below. 

Science group titleP.I science group and emailObject class
Rise time to maximum light   
Typical mag. increase to max.  
Absolute peak magnitude
Host galaxy type and preferred location
Redshift range of interest for science case
Phase range of interest for latest spectroscopic classification (i.e. must be at least X days before peak, at max., etc.)
Source of targets (particular survey or all?)
Additional relevant information (e.g. multiple peaks, pre-explosion outbursts, etc.)
Progenitors and explosion physics of SNe Ia at z<0.02Kate Maguire (kate.maguire@qub.ac.uk)SNe Ia
15 - 20 d 
-17 to -15 d: ~1.5 mag
-15 to -10 d: ~2 mag
-10 to 0 d: ~0.8 mag
-18 to  -19.8
Anywhere z < 0.02Max. light
Faint or fast-evolving, non-interacting Type I SupernovaeStefan Taubenberger
SNe Ia pec (91bg, Iax), Ca-rich transients, weirdos2 - 18 dwide range-14 to -18Anywhere, but certain classes prefer remote locations z < 0.02Max. light, in some cases also a few days later All 
Luminous, non-interacting type II supernovae: understanding the powering mechanism of bright SNe II Joe Anderson (janderso@eso.org)        
 SNeII brighter than Mv (or something equivalent) = -18.5    
 Unknown. Normal Type IIs in general have <10d rise to max.
 Above -18.5    
 Any galaxy. Even more interesting if in low-L hosts.    
 z<0.1 Up to several weeks past estimated explosion epoch. However, the brighter the SN, the later it is still interesting to get the classification.          
Type Ia SNe
(91T-like and 99aa-like)
 SNe Ia with no (or weak) IME lines 7-10d before maximum
 ~ 15-20d  -19.5 to -20 Predominantly at late-type, very interesting the ones at remote locations z<0.03-0.04 Maximum light All 
 Tidal disruption events    
 Peter Jonker
 Tidal disruption events
 1-50 days
 Few magnitudes
but could be less (current selection bias).
 -16 (rare) to -23.5 (also rare)
 Any, though many prefer E+A galaxies
 any Max light
Testing SNe II as distance indicators at near-IR wavelengths

Ósmar Rodríguez
SNe II<15dUnknown>-18.5 mag
Any galaxy, anywherez > 0.01Up to 30d past estimated explosion epoch

GRAWITA Electromagnetic counterpart of Gravitational Wave searches      Maria Teresa Botticella
 optical counterpart
of GW events
 Unknown Unknown Unknown Anywhere any must be  asap after the  alert  All 
Supernova progenitors
Morgan Fraser
Nancy Elias-Rosa
All SNe
 - - --
  <25 Mpc - AllMust have archival pre-explosion images. Take multiple short imaging exposures (avoiding saturating the SN) with classification spectrum, with ~1" seeing or better, to do astrometry.
Interacting transients (SNe IIn/Ibn and ILOTs)Andrea Pastorello
Morgan Fraser
SNe IIn, Ibn, ILOTs, impostors, LBVs
 From a few days to a few years
 wide range
 -10 to -20
 Anywhere  z < 0.02As soon as possible after discovery
 AllAny targets that show pre-explosion outbursts, or multiple peaks in lightcurves are high priority classifications.