GROND

GROND is an imaging instrument to investigate Gamma-Ray Burst Afterglows and other transients simultaneously in seven bands g'r'i'z'JHK mounted at the 2.2m MPG telescope at the ESO La Silla Observatory (Chile).

We are still in the testing stage of new GROND SN program, PI: (Janet) Ting-Wan Chen.
If you have unusual SNe and need GROND photometry, please contact Janet directly: jchen at mpe.mpg.de
We currently only support to followup SNe at early phase. 

GROND/PESSTO data can be found here:
(for the login here use the username 'pessto')
http://www.pessto.org/private/data/external/GROND/

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If you are interested in using GROND data, we appreciate to have those information in your paper:
(A) Coauthorship:
Ting-Wan Chen (T.-W. Chen)
Max-Planck-Institut f{\"u}r Extraterrestrische Physik, Giessenbachstra\ss e 1, 85748, Garching, Germany

(B) Citation:
Please must cite the GROND instrument paper:
Greiner et al. 2008, PASP 120, 405
http://adsabs.harvard.edu/abs/2008PASP..120..405G

For the data reduction, the standard reference is:
Krühler et al. 2008, ApJ, 685, 376
http://adsabs.harvard.edu/abs/2008ApJ...685..376K
But if you a short in references (e.g., for Nature, Science, ApJ Letters ...) you could cut this, 
but for a normal paper it would be appropriate to cite. 

(C) Acknowledgments:
T.-W.C. thanks Thomas Krühler (Kr{\"u}hler) for GROND data reduction. 
Part of the funding for GROND (both hardware as well as personnel) was generously granted from the Leibniz-Prize to Prof. G. Hasinger (DFG grant HA 1850/28-1). 


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GREAT 

The ''GREAT'' (GRond-Epessto-ATlas) survey of early superluminous supernova bumps project is a broad collaboration mainly coordinated by members of the GROND (Greiner et al. 2008, PASP 120, 405), ePESSTO (Smartt et al. 2015 A&A, 579, 40; www.pessto.org) and ATLAS team (Tonry et al. 2011, PASP, 123, 58; Tonry et al. ATel #8680). We aim to search for pre-peak light curve bumps of superluminous supernovae (e.g. Leloudas et al. 2012, A&A, 541, 129; Nicholl et al. 2015, ApJL, 807, L18; Nicholl & Smartt 2016, MNRAS, 457, L79; Smith et al. 2016, ApJL, 818, L8) in the low-z regime.

Targets are supplied by the ATLAS survey with a 2-4 day cadence, and we select our targets based on the presence of a faint underlying host galaxy in the PanSTARRS pre-explosion images. This is because the hosts of superluminous supernovae tend to be compact, star-forming dwarf galaxies with median of M_B ~ -17 mag (e.g. Chen et al. 2013, ApJL, 763, L28; Lunnan et al. 2014, ApJ, 787, 138; Schulze et al. 2016, arXiv:161205978). We use simultaneous g'r'i'z'JHK GROND observations to estimate the photospheric temperature of the source from a fit of the spectral energy distribution assuming a black body. In those cases where we find a high temperature (> 20000 K) object, we then trigger ePESSTO for spectroscopic classification. This has the advantage that both the 2.2m MPG telescope and NTT are co-located at the ESO La Silla Observatory (Chile). We plan to report our GROND observations through ATels for those objects with an estimated black body temperature > 20000 K. For those objects that have a lower temperature, we will provide information through the ePESSTO NTT observation management tool. Moreover, we will add a comment for each object on the TNS webpage.

We acknowledge excellent help in obtaining these data from the supporting astronomers and observers on La Silla for 2.2m and NTT, and thanks the organisers and participants of MIAPP workshop “Superluminous supernovae in the next decade” for stimulating discussions.


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SLSN.INFO  webpage
A list of type I superluminous supernovae and their host galaxies.







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Ting-Wan Chen,
8 Mar 2017, 07:54
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