Christina River Institute


STS-112 Shuttle Mission (Melroy)

Hypertelescope (Labeyrie)

Laser Trapped Mirror (Labeyrie)

CHIPS Mission (Hurwitz)

ISEA 2002  (Malina)

Encoding Altruism (Malina)


Janet Akyuz Mattei

American Association of Variable Star Observers (AAVSO)
25 Birch Street, Cambridge, MA, 02138, USA

Phone: 617 354 0484 
Fax: 617 354 0665


B.A. Brandeis University, Waltham, MA, 1965
Yuksek Lisans (Turkish M.S.), Ege University, 1970
M.S., University of Virginia, Charlottesville, VA, 1974
Ph.D. Ege University, Izmir, Turkey, 1982

Janet A. Mattei is an internationally recognized astronomer specializing in the field of variable stars, particularly eruptive (cataclysmic) and pulsating (long period) variables. She has been the Director and the scientific representative of the American Association of Variable Star Observers (AAVSO) since 1973. As the Director of the AAVSO, she is responsible for the quality control of of the AAVSO International Database - the world's largest optical variable star database with over 10 million observations going back to 1911 - mostly amateur astronomers - worldwide. She has coordinated over 600 observing programs between amateur and professional astronomers using large, ground-based telescopes in well-known observatories and space satellites. She has provided observations from the AAVSO International Database for over 600 projects for multi-wavelength data correlation. 
Dr. Mattei is keenly interested in education and has provided guidance in setting up over 200 observing programs in schools and for student science projects. She has been the principal investigator of two NASA-funded IDEA grants for the AAVSO education program: "Partnership in Astronomy" and co-director of AAVSO's major education project: Hands-On Astrophysics: Variable Stars in Math, Science, and Computer Education, funded by the National Science Foundation. She has played a key role in amateur astronomers being given observing time on NASA's Hubble Space Telescope (HST), and served in the working group to choose the amateur astronomers who would observe with HST from 1986 to 1995. Dr. Mattei has published over 180 papers on variable stars and related topics, mostly in refereed journals.

Professional Affiliations and Appointments:
International Astronomical Union, 1979-to date
I.A.U. Commission 27: Variable Stars, 1979-to date
Commission 27 Organizing Committee, 1991-1997 

American Astronomical Society, 1976-to date
Annenberg Award Committee, 1994-1997
Working Group on Professional-Amateur Collaboration (chair), 1999 -to date
Astronomical Society of the Pacific, 1985-date
ASP Board of Directors, 1994-2000
ASP Awards Committee 1994-1997
American Association of Variable Star Observers, 1969-date
NASA Astrophysics Division Science Operations Management Operations Working Group, 1988-1991
Hubble Space Telescope Amateur Astronomers Working Group, 1985-1995 "An Education Initiative in Astronomy" Workshop, instituted by the National Science Academy and sponsored by NASA, 1990, Invited Participant

Honors and Awards:
Naming of the Minor Planet 11695, Mattei, for her leadership of the AAVSO, 2001 

Jackson-Gwilte medal of the Royal Astronomical Society for Leadership of the AAVSO and contributions to Variable Star Research, 1995
First Giovanni Battista Lacchini Award for collaboration with amateur astronomers; Unione Astrofili Italiana, Italy, 1995
Leslie Peltier Award for Leadership of AAVSO and contributions to variable star astronomy, 1993
George Van Biesbroeck Award for Leadership of AAVSO and service to astronomy, 1993
Centennial Medal for Leadership in Variable Stars, Societe Astronomique de France, 1987
Wien International Scholarship, Brandeis University, Waltham, MA, 1962-1965

Sample of Recent Publications:
"On the Long-Term Behavior of SS Cygni", 1992, Cannizzo, J.K. & Mattei, J.A., ApJ, 401, 642.

"EUVE Observations of the Anomalous 1993 Outburst of SS Cygni",  1995, Mauche, C.W. et al., ApJ,446, 842.

"Partnership in Astronomy: Linking Students and Teachers with a Community of Dedicated Amateur Astronomers", 1996, Mattei, J.A. et al., Astronomy Education: Current Developments, Future Coordination, ASP Conference Series 89, ed. J.R. Percy, 249. 

"Hands-On Astrophysics: Variable Stars in the Math/Science Lab",  1996, Mattei, J.A. et al., Astronomy Education: Current Developments, Future  Coordination, ASP Conference Series 89, ed. J.R. Percy, 247. 

"Superoutburst Photometry of AL Comae Berenices", 1996, Howell, S. et al., AJ, 111, 2367. 

"Nonlinear Analysis of the Lightcurve of the Variable Star R Scuti", 1996, Buchler, J.R. et al., ApJ, 462, 489. 

"Time Frequency Analysis and Pulsation of LPV Stars. I. o Ceti", 1997, Barthes, D. &  Mattei, J.A., AJ, 113, 373. 

"Mean Light Curves of long-period variables and discrimination between carbon- and  oxygen-rich stars", 1997, Mennessier, M.O. et al., A & Ap, 124, 143. 

"Detection of Short-term Variations in Mira-type Variables from Hipparcos Photometry",  1998, de Laverny, P. et al., A & Ap, 330, 169.


Botany, especially wildflowers, photography, hiking, gardening.