SETI Institute
  • Upload

  • Log in

  • Sign up

Search on MyScienceWork
1 News 5K Publications 99 Members 176 Reports Support our Research

New Photometry and Spectra of AB Doradus C: An Accurate Mass Determination of a Young Low-Mass Object with Theoretical E...

Close, Laird M Thatte, Niranjan Eric Nielsen Abuter, Roberto Clarke, Fraser Tecza, Matthias

Published in The Astrophysical Journal

We present new photometric and spectroscopic measurements for the unique, young, low-mass evolutionary track calibrator AB Dor C. While the new K s photometry is similar to that we have previously published, the spectral type is found to be much earlier. Based on new H and K IFS spectra of AB Dor C from Thatte et al.(Paper I), we adopt a spectral t...

Interstellar gas, dust and diffuse bands in the SMC

Cox, Nlj Cordiner, M A Ehrenfreund, P Kaper, L Sarre, P J Foing, B H Spaans, M Jan Cami Sofia, U J Clayton, G C ...

Published in ScienceOpen Astronomy & Astrophysics

Aims. In order to gain new insight into the unidentified identity of the diffuse interstellar band (DIB) carriers, this paper describes research into possible links between the shape of the interstellar extinction curve (including the 2175 Å bump and far-UV rise), the presence or absence of DIBs, and physical and chemical conditions of the diffuse ...

Cassini imaging of Saturn s rings: II. A wavelet technique for analysis of density waves and other radial structure in t...

Matthew Tiscareno Burns, Joseph A Nicholson, Philip D Hedman, Matthew M Porco, Carolyn C

Published in Icarus

We describe a powerful signal processing method, the continuous wavelet transform, and use it to analyze radial structure in Cassini ISS images of Saturn s rings. Wavelet analysis locally separates signal components in frequency space, causing many structures to become evident that are difficult to observe with the naked eye. Density waves, generat...

Numerical Simulations of the G Ring Arc

Matthew Tiscareno M M, Hedman J A, Burns P D, Nicholson

Published in American Astronomical Society, DDA meeting

We conducted numerical simulations of 3,830 massless test particles in the Saturn system near the 7: 6 corotation eccentricity resonance (CER) with Mimas, in response to the recent observations of an arc in the faint and dusty G Ring (see Hedman et al, this conference). We simulated 80 years of evolution, taking into account the perturbations of Sa...

Very high contrast integral field spectroscopy of AB Doradus C: 9-mag contrast at 0.2 arcsec without a coronagraph using...

Thatte, Niranjan Abuter, Roberto Tecza, Matthias Eric Nielsen Clarke, Fraser J Close, Laird M

Published in Monthly Notices of the Royal Astronomical Society

We present an extension of the spectral deconvolution (SD) method to achieve very high contrast at small inner working radii. We apply the method to the specific case of ground-based adaptive optics fed integral field spectroscopy (without a coronagraph). Utilizing the wavelength dependence of the Airy and speckle patterns, we make an accurate esti...

Structures in Saturn's G ring

Matthew, Hedman J A, Burns Matthew Tiscareno C C, Porco

Published in American Astronomical Society, DDA meeting

Using images taken by the Cassini spacecraft, we have identified a longitudinally confined arc of material located at the G ring's inner edge that is roughly five times brighter than other parts of the G ring. Images taken over the last two years show that the orbital mean motion of the arc is 445.475 +/- 0.007 degrees/day, corresponding to a semi-...

Appendix 1: Io’s hot spots

Lopes, Rosaly M C Radebaugh, Jani Meiner, Melissa Perry, Jason Franck Marchis

Published in Io after Galileo, Praxis, Chichester, UK

(N) NICMOS hot spots detected by Goguen et al.(1998)..(D) Hot spots detected by C. Dumas et al. in 1997 and/or 1998 (pers. commun.).. Keck are hot spots detected by de Pater et al.(2004) and Marchis et al.(2001) from the Keck telescope using Adaptive Optics..(V, G, C) indicate Voyager, Galileo, or Cassini detection. Other ground-based hot spots det...

HD 114839-An Am star showing both delta Scuti and gamma Dor pulsations discovered through MOST photometry

King, H Matthews, J M Jason Rowe Cameron, C Kuschnig, R Guenther, D B Moffat, Afj Rucinski, S M Sasselov, D Walker, Gah ...

Published in arXiv preprint arXiv:0706.1804

Using MOST (Microvariability and Oscillations of STars) satellite guide star photometry, we have discovered a metallic A star showing hybrid p-and g-mode pulsations. HD 114839 was observed nearly continuously for 10 days in March, 2005. We identify frequencies in three groups: the first centered near 2 cycles/day, in the gamma Dor pulsation range, ...

Comparison of Tracking Codes for the International linear Collider

Jeffrey Smith Latina, Andrea Schulte, Daniel Poirier, Freddy Walker, Nicholas Lebrun, Paul Ranjan, Kirti Kubo, Kiyoshi Peter Tenenbaum Eliasson, Peder ...

Published in 2007 IEEE Particle Accelerator Conference (PAC)

AIDA: an adaptive image deconvolution algorithm with application to multi-frame and three-dimensional data

Hom, Erik F Y Franck Marchis Lee, Timothy K Haase, Sebastian Agard, David A Sedat, John W

Published in JOSA A

We describe an adaptive image deconvolution algorithm (AIDA) for myopic deconvolution of multi-frame and three-dimensional data acquired through astronomical and microscopic imaging. AIDA is a reimplementation and extension of the MISTRAL method developed by Mugnier and co-workers and shown to yield object reconstructions with excellent edge preser...

  • ← Previous
  • 1
  • …
  • 95
  • 96
  • 97 (current)
  • 98
  • 99
  • 100
  • Next →
Powered by Polaris
  • About SETI
  • About this Platform
  • FAQ