TBD - JHU CAS seminar

TBD - Tonantzilla Observatory Puebla MX

Aug. 19 2009 - HIA-NRC, Canada
Title: Star Formation in the Local Group.
Wide-field far-UV and near-UV imaging from GALEX provides a deep, comprehensive view of the young stellar populations in hundreds of nearby galaxies, shedding new light on the process of star formation (SF) and its modalities in different environments, and measurements for millions of distant galaxies. For Local Group galaxies, GALEX UV imaging affords coverage of the whole extent of the galaxy at a resolution better than 20pc. Detailed information on the stellar constituents of the SF sites in these galaxies, obtained from an HST treasury imaging survey and follow-up optical spectroscopy, are used to calibrate the global characterization derived with GALEX data and with data at longer wavelengths. The results help clarify the interplay between interstellar dust and SF. Results from UV, Halpha and IR data are compared. In a wider context, potential uses of the UV sky surveys are illustrated.

June 19, 2009 - Univ. of Padua, Italy
Title: Star formation in the local universe and UV sky surveys.

April 10, 2009 - Talk at Rutgers University
Title: Star Formation in the Local Universe
Abtract: Ultraviolet surveys of the sky are obtained by the Galaxy Evolution Explorer (GALEX), to address questions such as the history of star formation in the recent Universe. They provide unprecedented sky maps in two UV bands and catalogs of UV sources, which probe and characterize with great sensitivity several classes of astrophysical objects, including low-redshift QSOs, and hot white dwarfs in the Milky Way. A dedicated survey of nearby galaxies offers a most comprehensive, deepest map of their young stellar populations, shedding new light on the process of star formation and its modalities in different environments. The UV data, combined with IR and optical data, provide a complete account of the current SF, obscured and unobscured by dust, down to extremely low SF rates, over a variety of morphologies and conditions, and reveal unexpected results.

Oct. 17, 2007 - at "UV and X-Ray Science Planning for ASTROSAT" Montreal, CA
The UV sky: results from the GALEX surveys

May 29, 2007 - Invited talk at ``Space Astronomy: The UV Window to the Universe'' (El Escorial, May 29 - June 1 2007)
The Ultraviolet Sky Surveys: Filling the Crucial Gap in our View of the Universe

Aug. 2006 - Invited talk at IAU General Assembly - JD 4 - Prague
``High mass stars: Stellar Populations''

June 8, 2006, University of Trieste
Learning about Star Formation from the Local Universe

March 23, 2006 - Colloquium at Yale
``The Ultraviolet Sky: Learning about Star Formation from the Local Universe''
Abstract: GALEX is a NASA small explorer mission performing imaging and spectroscopic surveys of the sky in the ultraviolet. GALEX provides unprecedented sky maps in two UV bands, comparable to the deepest existing surveys at other wavelengths, and unbiased catalogs of UV sources. I will give a brief overview of the instrument and of the available data, and present selected science results. The UV sources, classified by comparing their UV-to-IR colors to model colors, significantly increase the statistics of some classes of astrophysical objects, such as low-redshift QSOs, and provide an unprecedented census of white dwarfs in the Milky Way.
A dedicated, deep survey of nearby galaxies offers a snapshot of the recent star formation across entire galaxies, shedding new light on the process of star formation and its modalities in varied environments and conditions. The UV data, combined with IR and optical data, provide a complete account of the current SF, obscured and unobscured by dust, down to extremely low SFR, and suggest a wide variety of morphologies and conditions across these galaxies. The relationship UV-to-global star formation rate, calibrated from local galaxies studies, can be applied to distant galaxies from the deep fields to map the history of star formation in the universe over the redshift range z=0-2.

Apr. 28, 2005 - Colloquium at JHU
``The Ultraviolet Sky: results from the GALEX mission''

Mar. 30, 2005 - U. Penn
``The GALEX view of the local Universe''

Oct. 11-13, 2004 - Invited Talk at the Conference New windows on star formation in the cosmos
``Global Mapping of Milky Way Star Formation with GALEX''

April 28, 2004 - JHU lunch talk
``GALEX sampler (of capabilities, images, results)''

April 22, 2004 - University of Delaware
"The Recent Star Formation: Early Results from GALEX UV surveys"

Mar. 10, 2004 - STScI
"Early Results from GALEX"