Marcin Sawicki
Astronomy & Physics

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2014 February 2-9:     Massive galaxies in Colorado

I am off to the Aspen Center for Physics to participate in their conference on the Formation of Massive Galaxies.  Giving a talk on the massive galaxies at z~2 and how their quenching is similar to human mortality

2014 March 28:     Colloquium at Tufts

Giving a colloquium at Tufts University in Boston.  Good conversations about science with Danilo Marchesini and other folks.


2014 June 16:     CLAUDS awarded large allocation of CFHT time

The CFHT Large Area U-band Deep Survey (CLAUDS) is awarded time on the Canada-France-Hawaii Telescope. During 60 nights spanning the next two years we plan to use CFHT’s MegaCam to take very deep U-band images of the ~25 square degrees of the Subaru HyperSuprimeCam Survey’s “Deep Layer”. CLAUDS combines CFHT observing time from Canada, France, and China to take images that will have an unprecedented combination of depth and area at this wavelength. Combining the CLAUDS U-band images with the Subaru dataset will allow the selection of star-forming galaxies at z~2-3, measurements of rest-UV SFRs at z<1, and will greatly improve photometric redshift performance that’s key in almost all galaxy-evolution studies. The volume and depth of the universe probed will be enormous and will enable us to study the evolution of the galaxy population in detail in many slices of redshift, luminosity, mass (stellar and dark matter halo), environment, and rudimentary morphology.

all news:  current/recent | 2013 | 2012 | 2011 | 2010

2014 July 4:     Clustering paper accepted

Our paper on the clustering of z~2 galaxies is accepted for publication by MNRAS.  This describes the clustering of both passive and star-forming galaxies selected from wide-field imaging by the CFHT in the CFHTLS Deep fields.


2014 August 7-8:     JWST Guaranteed Time Observers’ meeting at Space Telescope Science Institute, Baltimore

The NIRISS team attends the JWST GTO meeting where we exchange ideas with other Guaranteed Time Observers on what observing programs we wish to carry out when the telescope launches. Our NIRISS team has 450 hours of guaranteed JWST telescope time which we will split roughly equally between studies of galaxy formation/evolution and of exoplanets. Team members give a number of talks at the meeting;  I speak about slitless spectroscopy studies of “intermediate redshift” (z~5) galaxies. 

A great meeting with lots of idea exchanges.  I am really looking forward to the amazing programs that we will be doing with JWST in just a few years’ time!


2014 September 16:     First set of CLAUDS data is taken

The first set of deep CFHT U-band observations of the HSC survey fields has been taken during the late-August dark run!  Approximately 13 hrs, including a significant number of images in truly excellent seeing.   The project is off to a great start! (A big thank you to CLAUDS team member Stephen Gwyn for a rapid reduction of the data shown in the image!).

2015 March 17:     Tiffany wins an ACEnet research fellowship

Tiffany wins an ACEnet research fellowship for the summer of 2015.  These competitive awards, worth $5000, go to the best undergraduate students planning to work in computationally-intensive science areas. Tiffany will be working with PhD student Bobby Sorba and other members of our group on speeding up galaxy SED-fitting with innovative applications of KDtrees.