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  • CV: Post-doc fellow at the Harvard-Smithsonian Center for Astrophysics

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    Personal information
    Contact information
    Candidate Profile
     Date Submitted:01-03-2013
     Last Modified:03-03-2013 (07:20)
    Job information
     Current job:Post-doc fellow at the Harvard-Smithsonian Center for Astrophysics
     Employment Term:Temp/Contract
     Job location:Anywhere
     Date available:>3months
     Keywordsresearch star formation science popularization linux data analysis statistic optical infrared X-ray IDL R Ph.D.

    Personal Data
    – Place and date of birth: Tropea (VV), 22/May/1978
    – Nationality: Italian

    - Current position
    – Post-doc fellowship for collaboration with the Chandra Cygnus OB2 Legacy Survey at the High Energy Division in the Harvard-Smithsonian Center for Astrophysics - Cambridge - MA.

    – 1994-1999: I attended the “Liceo Scientifico E. Fermi” in Sant’Agata Militello, in an experimental course of physic and informatics. I graduated with 54/60.
    – 1999-2006: Master’s degree in Physic at the University of Palermo; grade 104/110. Title: “Circumstellar disks in the stars-forming region NGC 6611: optical, NIR and X-rays observations”. Supervisor: Prof. G. Peres.
    – 2007-2010: Ph.D. degree at the Palermo University. Dissertation: “Star formation in massive clusters: a multiwavelength study of NGC6611 and the Eagle Nebula”. Supervisor: prof. G. Peres.

    Professional Experiences
    – August/01/2006 - December/31/2006: scientific collaboration with INAF-Osservatorio Astronomico G. S. Vaiana di Palermo on the evolution of circumstellar disks in stars forming regions.
    – January/01/2007 - December/31/2009: Ph.D. course at the Palermo University.
    – January/12/2006 - January/26/2006: scientific collaboration with prof. L. Testi as visiting student at the European Southern Observatory, on the reduction and analysis of photometric infrared data, acquired with NICS camera mounted on the Telescopio Nazionale Galileo (TNG).
    – January/01/2010 -March/31/2010: scientific collaboration with INAF-Osservatorio Astronomico G. S. Vaiana di Palermo on the influence of massive stars on circumstellar disk evolution and star formation.
    – April/01/2010 - Present day: post-doc fellowship at the Harvard-Smithsonian Center for Astrophysics, Cambridge, for collaboration with the Chandra Cygnus OB2 Legacy Survey.

    Published referred papers
    – Guarcello, M. G.; Prisinzano, L.; Micela, G.; Damiani, F.; Peres, G.; Sciortino, S., 2007, Correlation between the spatial distribution of the circumstellar disks and the massive stars in the open cluster NGC 6611; compiled catalog and cluster parameters, A&A, 462, 245 (ADS link:
    – Guarcello, M. G.; Micela, G.; Damiani, F.; Peres, G.; Prisinzano, L.; Sciortino, S., 2009, Correlation between the spatial distribution of circumstellar disks and massive stars in the open cluster NGC 6611. I: Cluster members selected with Spitzer/IRAC, A&A, 496, 453 (ADS link:
    – Guarcello, M. G.; Damiani F.; Micela G.; Peres G.; Prisinzano L.; Sciortino S., 2010, Pre-main sequence stars with disks in the Eagle nebula observed in scattered light, A%A, 521, 18, (ADS link:
    – Guarcello, M. G., Micela G., Peres G., Prisinzano L., Sciortino S., 2010, Chronology of star formation and disk evolution in the Eagle Nebula, A&A, 521, 61 (ADS link:
    – Prisinzano, L.; Sanz-Forcada, J.; Micela, G.; Caramazza, M.; Guarcello, M. G.; Sciortino, S.; Testi, L., 2011, Star formation in the outer Galaxy: membership and fundamental parameters of the young open cluster NGC 1893, A&A, 527A, 77P (ADS link:
    – Leitzinger, M.; Odert, P.; Kulikov, Yu. N.; Lammer, H.; Wuchterl, G.; Penz, T.; Guarcello, M. G.; Micela, G.; Khodachenko, M. L.; Weingrill, J.; and 3 coauthors, 2011, Could CoRoT-7b and Kepler-10b be remnants of evaporated gas or ice giants?, P&SS, 59, 1472,
    – Wright, Nicholas J.; Drake, Jeremy J.; Drew, Janet E.; Guarcello, Mario G.; Gutermuth, Robert A.; Hora, Joseph L.; Kraemer, Kathleen E., 2012, Photoevaporating Proplyd-like Objects in Cygnus OB2, ApJ, 746, 21, – Riaz, B.; Honda, M.; Campins, H.; Micela, G.; Guarcello, M. G.; Gledhill, T.; Hough, J.; Mart˜An, E. L., 2012, The radial distribution of dust species in young brown dwarf discs, MNRAS, 420, 260,
    – Guarcello, M. G.; Caramazza, M.; Micela, G.; Sciortino, S.; Drake, J. J.; Prisinzano, L., 2012, Chandra/ACIS-I Study of the X-Ray Properties of the NGC 6611 and M16 Stellar Populations, ApJ, 753, 117,
    – Guarcello, M. G., Wright, N. J.; Drake, J. J.; Garc˜Aa-Alvarez, D.; Drew, J. E.; Aldcroft, T.; Kashyap, V. L., 2012, Optical Photometric GTC/OSIRIS Observations of the Young Massive Association Cygnus OB2, ApJ, 202, 19,

    Proceedings and other publications
    – Wright, N. J.; Bouy, H.; Drake, J. J.; Drew, J. E.; Guarcello, M. G.; Navacues, D. B., 2012, The Dynamics of an Expanding OB Association, ArXiv, 208, 0211,

    Invited talks
    – conference: “Life in the Cosmos Workshop”, September 5-7 2012, Washington (USA). Title: Where planets are formed: Protoplanetary disk evolution and planet formation in different Galactic environments.

    Talks and posters presented in conferences
    – Conference: “IAU Symposium 243 Star-disk interaction in young stars”, May 21-25 2007, Grenoble (France). Poster: Stars with circumstellar disks in NGC6611
    – Winter school: “The Early Phase of Planet Formation”, February 18-22 2008, Bad-Honneff (Germany). Poster: Testing photoevaporation of circumstellar disks in the young open cluster NGC 6611˜fgp/WS08/poster_presentations/Guarcello.pdf
    – CONSTELLATION Work Package 2: “The Birth and Influence of Massive Stars”, September 14-17 2009, Prague. Contributed talk:The role of massive stars in star formation - Disk photoevaporation and star formation history in the Eagle Nebula˜richard/0909-prague/video/15-1450-guarcello.mpg
    – Conference: 218th AAS, May 22-26 2011, Boston. Contributed talk: Observations and theory on the externally induced photoevaporation of circumstellar disk
    – Conference: X-ray Universe 2011; June 27-30 2011, Berlin. Poster: Protoplanetary disks fraction in Cygnus OB2 from the Cyg OB2 Chandra Legacy Survey,
    – Conference: IV Science with the GTC; November 16-18 2011, La Palma (Canaria Island). Contributed talk: OSIRIS deep Imaging of Cygnus OB2: the stellar population of the Cygnus X central engine
    – Conference: The labyrinth of star formation, June 18-22 2012 Crete. Poster: Externally induced disks photoevaporation in the massive cluster Cygnus OB2
    – Conference: Cool Stars 17, June 24-29 2012, Barcelona. Poster: Externally induced disks photoevaporation in the massive cluster Cygnus OB2
    Scientific programs approved as Principal Investigator
    – Effects of massive star radiation on circumstellar disks evolution in the Eagle Nebula, Instrument: CHANDRA/ACIS-I - Target: Eagle Nebula - Observing time: 160Ksec - Proposal n.: 09200559.
    – Deep IR photometry of the Cygnus OB2 young globular cluster, Instrument: NICS@TNG - Target: Cygnus OB2 - Observing time: 9 hours - Program code: TAC39.
    – Effects of UV radiation from massive stars on the evolution of circumstellar disks in NGC6611, Instruments: VIMOS@ESO, GIRAFFE/FLAMES@ESO - Target: Eagle Nebula - Observing time: 15 hours - Program ID: 083.C-0837.
    – Star formation close to the most massive stars in our Galaxy: unveiling the PMS members of Pismis 11, Instrument: CHANDRA/ACIS-I - Target: Pismis11 and HD80077 - Observing time: 100Ksec - Proposal n.: 200845.
    – Star formation, disk evolution and coronal activity at low metallicity, Instrument: CHANDRA/ACIS-I
    - Target: Dolidze25 - Observing time: 150Ksec - Proposal n.: 200866 Scientific programs approved as a Co-Investigator
    – NGC6611: triggered star formation or disks scattering?, Instrument: OSIRIS@GTC - Target: NGC6611 - Observing time: 35 hours.
    – Probing the Population of the Nearby Cygnus OB2 Supercluster, Instrument: OSIRIS@GTC - Target: Cygnus OB2 - Observing time: 5 hours
    – The Stellar Content and Dynamics of Cygnus OB2, Instrument: MMT/HectoSpec - Target: Cygnus OB2 - Observing time: 25 hours.
    – Spectral classification of candidate OB stars with disk in Cygnus OB2, Instrument: OSIRIS@GTC - Target: OB stars in Cygnus OB2 - Observing time: 4 hours
    – Probing the nature of the central sources in the proplyds in Cygnus OB2, Instrument: OSIRIS@GTC - Target: proplyds in Cygnus OB2 - Observing time: 3 hours

    Observing runs
    – Instrument: MMT@HectoSpec, Number of nights: 3 (October 5-6-7 2012)

    Published catalogs
    – BVI photometry in NGC 6611,
    – Photometry of candidate members of NGC6611,
    – Catalog of Blue Stars With Disk (BWE) stars in M16,
    – Stars associated to Eagle Nebula (M16) & NGC6611,
    – X-ray catalog of Eagle Nebula,
    – riz photometry in Cyg OB2,

    Informatics skills
    – Programming language: C++.
    – High performance computing: MPI (basic knowledge)
    – Operating systems: LINUX,Windows, MAC OS X.
    – Software for data analysis: IDL, IRAF, DAOPHOT package, SNAP, CIAO, HEASOFT, AcisExtract, PWDetect, R, XSPEC
    – Software for documents compilation: LaTex, MS WORD

    Languages knowledge
    – English: good.

    Teaching duties
    – Co-supervisor for the training program of the student D. Cirrincione, with title: “Young stars and accretion disks in infrared”, Palermo University, Academic year 2008-2009
    – Tutor of the training sessions during the school: “X-rays from star forming regions, 18-22 May 2009, Palermo

    Science popularization activities
    – from 2007 to 2010: I participated, both as astronomer and staff coordinator, at the organization and fulfillment of astronomical observations for visitors and students and special astronomical events organized by the Astronomical Observatory of Palermo.
    – from 2008 to 2010: I worked, both as scientific popularizer and staff coordinator, with the nonprofit association “Specula Panormitana” for the organization of astronomical activities for the public.

    Research Activity
    My research is mainly focused on the effects that massive stars (OB spectral type) have on the star formation
    process in the parental cloud and on the evolution of nearby T-Tauri stars. My studies are mainly focused
    on the triggering of star formation by the OB stars, induced by the formation of expanding ionization fronts
    in the cloud irradiated by the UV radiation emitted by OB stars (Elmegreen & Lada, 1977; Lada 1987),
    and on the externally induced photoevaporation of circumstellar disks experiencing intense incident UV flux
    (Johnstone et al. 1998; Storzer & Hollenbach 1999; Adams et al. 2004), which strongly affects the planets
    formation process in disks.
    I studied these effects in the star forming region M16 (the Eagle Nebula), which hosts the young open cluster
    NGC 6611 with 54 OB stars and a rich population of low mass disk-bearing members younger than 3 million
    of years, and Cygnus OB2 region, which is the closest massive star forming region (with thousands of OB
    stars) to the Sun.
    In the Eagle Nebula I found evidence that disks are less frequent close to the OB stars (closer than 1 parsec
    on average) with respect to the outer regions of the cluster. This finding agrees with the hypothesis that in the
    last 1 million year (which is the average age of cluster members), the Extreme Ultraviolet (EUV) radiation
    dissipated the circumstellar disks inducing the photoevaporation process. For average distances larger than 1
    parsec the disk frequency is almost constant, suggesting that at this distances the photoevaporation is induced
    by Far UltraViolet photons, with a dissipation timescale larger than the age of NGC 6611. In clusters with
    the content of OB stars similar to NGC 6611, then, the early evolution of disks is affected only in the cluster
    centers, while in the outer regions they can evolve and eventually form planetary systems unperturbed. I also
    found evidence that the star formation in M16 was triggered by the central massive stars in the last Myear
    only in the North-East direction. Very likely, the first events of star formation have been triggered in the
    South-West about 3Myrs ago by the incidence of a Giant Molecular Shell, created by supernova explosions
    about 6 million years ago (Moriguchi et al. 2002).
    In Cygnus OB2 I am currently working on the compilation of deep optical and X-ray catalogs, which,
    merged with existing infrared and optical data, will allow us a complete census of the disk-bearing and diskless
    stars associated with the star forming region down to subsolar masses, and a detailed study of the star
    formation process and products in very massive star forming regions.
    Other important topics of my research are the study of the properties of circumstellar disks by the analysis of
    their Spectral Energy Distributions, which leaded to the discovery of a subsample of disk-bearing members
    of M16 whose optical colors are heavily altered by scattered light being similar to those of field Main
    Sequence stars; and the study of the X-ray properties of young stars. In fact, I’ve analyzed in detail the Xray
    observations of M16 in order to compare its X-ray luminosity with that of other young clusters, to study
    the effects of the circumstellar disks on the coronal activity of the hosting star, and the X-ray properties of
    OB stars.

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