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28 March 2024 |
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The Formation and Evolution of Planetary Systems: SIRTF Legacy Science in the VLT Era | M.R. Meyer
; D. Backman
; S.V.W. Beckwith
; T.Y. Brooke
; J.M. Carpenter
; M. Cohen
; U. Gorti
; T. Henning
; L.A. Hillenbrand
; D. Hines
; D. Hollenbach
; J. Lunine
; R. Malhotra
; E. Mamajek
; P. Morris
; J. Najita
; D.L. Padgett
; D. Soderblom
; J. Stauffer
; S.E. Strom
; D. Watson
; S. Weidenschilling
; E. Young
; | Date: |
4 Sep 2001 | Subject: | astro-ph | Abstract: | We will utilize the sensitivity of SIRTF through the Legacy Science Program to carry out spectrophotometric observations of solar-type stars aimed at (1) defining the timescales over which terrestrial and gas giant planets are built, from measurements diagnostic of dust/gas masses and radial distributions; and (2) establishing the diversity of planetary architectures and the frequency of planetesimal collisions as a function of time through observations of circumstellar debris disks. Together, these observations will provide an astronomical context for understanding whether our solar system - and its habitable planet - is a common or a rare circumstance. Achieving our science goals requires measuring precise spectral energy distributions for a statistically robust sample capable of revealing evolutionary trends and the diversity of system outcomes. Our targets have been selected from two carefully assembled databases of solar-like stars: (1) a sample located within 50 pc of the Sun spanning an age range from 100-3000 Myr for which a rich set of ancillary measurements (e.g. metallicity, stellar activity, kinematics) are available; and (2) a selection located between 15 and 180 pc and spanning ages from 3 to 100 Myr. For stars at these distances SIRTF is capable of detecting stellar photospheres with SNR >30 at lambda < 24 microns for our entire sample, as well as achieving SNR >5 at the photospheric limit for over 50% of our sample at lambda=70 microns. Thus we will provide a complete census of stars with excess emission down to the level produced by the dust in our present-day solar system. More information concerning our program can be found at: http://gould.as.arizona.edu/feps | Source: | arXiv, astro-ph/0109038 | Services: | Forum | Review | PDF | Favorites |
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