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81 papers · 1 filter
Characterizing Earth-like Planets with Terrestrial Planet Finder
S. Seager, E. B. Ford, E. L. Turner
For the first time in human history the possibility of detecting and studying Earth-like planets is on the horizon. Terrestrial Planet Finder (TPF), with a launch date in the 2015…
The Vegetation Red Edge Spectroscopic Feature as a Surface Biomarker
S. Seager, E. B. Ford
The search for Earth-like extrasolar planets is in part motivated by the potential detection of spectroscopic biomarkers. Spectroscopic biomarkers are spectral features that are ei…
Active star formation in N11B Nebula in the Large Magellanic Cloud: a sequential star formation scenario confirmed
Rodolfo H. Barba, Monica Rubio, Miguel R. Roth +1
The second largest HII region in the Large Magellanic Cloud, N11B has been surveyed in the near IR.We present JHKs images of the N11B nebula.These images are combined with CO(1-0)…
Circumnuclear Dust in Nearby Active and Inactive Galaxies. I. Data
Paul Martini, Michael W. Regan, John S. Mulchaey +1
The detailed morphology of the interstellar medium (ISM) in the central kiloparsec of galaxies is controlled by pressure and gravitation. The combination of these forces shapes bot…
A Mass for the Extrasolar Planet Gl 876b Determined from Hubble Space Telescope Fine Guidance Sensor 3 Astrometry and High-Precision Radial Velocities
G. F. Benedict, B. E. McArthur, T. Forveille +9
We report the first astrometrically determined mass of an extrasolar planet, a companion previously detected by Doppler spectroscopy. Radial velocities first provided an ephemeris…
UV-Optical Pixel Maps of Face-On Spiral Galaxies -- Clues for Dynamics and Star Formation Histories
Paul B. Eskridge, Jay A. Frogel, Violet A. Taylor +8
UV and optical images of the face-on spiral galaxies NGC 6753 and NGC 6782 reveal regions of strong on-going star formation that are associated with structures traced by the old st…