Rapid Processing of Astronomical Data for the Dark Energy Spectroscopic Instrument

In this paper we study a quintessence cosmological model in which the dark energy component is considered to be the generalized Chaplygin gas and the curvature of the three-geometry is taken into account. Two parameters characterize this sort of fluid: ν and α. We use different astronomical data for restricting these parameters. It is shown that the constraint ν ≲ α agrees well enough with the astronomical observations.

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PROBLEMS OF COSMOLOGICAL CONSTANT, DARK ENERGY AND POSSIBLE ADJUSTMENT MECHANISM

International Journal of Modern Physics A ◽

10.1142/s0217751x05024699 ◽

2005 ◽

Vol 20 (11) ◽

pp. 2403-2414 ◽

Cited By ~ 2

Author(s):

A. D. DOLGOV

Keyword(s):

Dark Energy ◽

Cosmological Constant ◽

Vacuum Energy ◽

Astronomical Data ◽

Adjustment Mechanism ◽

State Of Matter ◽

The Universe ◽

Constant Dark

Vacuum and dark energy energy problems are reviewed. Cosmology with non-zero vacuum energy is discussed. The astronomical data which indicate that the universe is filled with an anti-gravitating state of matter are described. The mechanisms which may lead to cancellation of almost infinite vacuum energy down to the astronomically observed value are enumerated with an emphasis to dynamical adjustment.

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Spectrophotometric reductions with an IBM 1620

Symposium - International Astronomical Union ◽

10.1017/s0074180900053328 ◽

1966 ◽

Vol 24 ◽

pp. 116-117

Author(s):

P.-I. Eriksson

Keyword(s):

Astronomical Data ◽

Spectrophotometric Data ◽

Electronic Computers ◽

The University ◽

Near Future

Nowadays more and more of the reductions of astronomical data are made with electronic computers. As we in Uppsala have an IBM 1620 at the University, we have taken it to our help with reductions of spectrophotometric data. Here I will briefly explain how we use it now and how we want to use it in the near future.

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Desiderata in connection by the calibration of the MK-system

Symposium - International Astronomical Union ◽

10.1017/s0074180900053699 ◽

1966 ◽

Vol 24 ◽

pp. 348-349

Author(s):

Th. Schmidt-Kaler

Keyword(s):

Absolute Magnitude ◽

Review Article ◽

Stellar Systems ◽

Astronomical Data ◽

Intrinsic Colour

This is only an informal remark about some difficulties I am worrying about.I have tried to recalibrate the MK system in terms of intrinsic colour (B–V)0and absolute magnitudeMv. The procedures used have been described in a review article by Voigt (Mitt. Astr. Ges.1963, p. 25–35), and the results for stars of the luminosity classes Ia-O,I and II have been given also in Blaauw's article on the calibration of luminosity criteria in vol. III (Basic Astronomical Data, p. 401) ofStars and Stellar Systems.

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