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reduced proper motion

Overview page. Subjects: Astronomy and Astrophysics.

Observed proper motion multiplied by a scaling factor to reduce it to a standard distance. For example, the relative distances of a sample of stars such as Cepheid variables can be derived...

See overview in Oxford Index

reduced proper motion

Ian Ridpath.

in A Dictionary of Astronomy

January 2012; p ublished online January 2012 .

Reference Entry. Subjects: Astronomy and Astrophysics. 57 words.

Observed proper motion multiplied by a scaling factor to reduce it to a standard distance. For example, the relative distances

Go to Oxford Reference »  home page

reduced proper motion

Overview page. Subjects: Astronomy and Astrophysics.

Observed proper motion multiplied by a scaling factor to reduce it to a standard distance. For example, the relative distances of a sample of stars such as Cepheid variables can be derived...

See overview in Oxford Index

reduced proper motion

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 57 words.

Observed proper motion multiplied by a scaling factor to reduce it to a standard distance. For example, the relative distances of a sample of stars such as Cepheid variables can be derived...

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A catalogue of bright ( K < 9 ) M dwarfs

J. Frith, D. J. Pinfield, H. R. A. Jones, J. R. Barnes, Y. Pavlenko, E. L. Martin, C. Brown, M. K. Kuznetsov, F. Marocco, R. Tata and M. Cappetta.

in Monthly Notices of the Royal Astronomical Society

November 2013; p ublished online August 2013 .

Journal Article. Subjects: Astronomy and Astrophysics. 4685 words.

Using the Position and Proper Motion Extended-L (PPMXL) catalogue, we have used optical and near-infrared colour cuts together with a reduced proper motion cut to find bright M dwarfs for...

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The IPHAS-POSS-I proper motion survey of the Galactic plane

N. R. Deacon, P. J. Groot, J. E. Drew, R. Greimel, N. C. Hambly, M. J. Irwin, A. Aungwerojwit, J. Drake and D. Steeghs.

in Monthly Notices of the Royal Astronomical Society

August 2009; p ublished online July 2009 .

Journal Article. Subjects: Astronomy and Astrophysics. 5581 words.

We present a proper motion survey of the Galactic plane, using Isaac Newton Telescope (INT) Photometric Hα Survey (IPHAS) data and Palomar Sky Survey (POSS)-I Schmidt plate data as a first...

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Candidate subdwarfs and white dwarfs from the 2MASS, Tycho-2, XPM and UCAC3 catalogues

George A. Gontcharov, Anisa T. Bajkova, Peter N. Fedorov and Vladimir S. Akhmetov.

in Monthly Notices of the Royal Astronomical Society

May 2011; p ublished online May 2011 .

Journal Article. Subjects: Astronomy and Astrophysics. 10927 words.

Photometry from the Two-Micron All-Sky Survey (2MASS), United States Naval Observatory CCD Astrograph Catalog (UCAC3) and SuperCosmos catalogues, together with proper motions from the...

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Proper Motions with Subaru II. A Sample in the Subaru/XMM-Newton Deep Survey Field

Michael W. Richmond, Tomoki Morokuma, Mamoru Doi, Yutaka Komiyama, Naoki Yasuda and Sadanori Okamura.

in Publications of the Astronomical Society of Japan

February 2010; p ublished online February 2010 .

Journal Article. Subjects: Galaxies; Stars. 4236 words.

We search for stars with proper motions in a set of deep Subaru images, covering about 0.48 square degrees to a depth of [math] 26, taken over a span of five and a half years. We follow the...

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The Physics of Sexual Difference in Aristotle and Irigaray

Emanuela Bianchi.

in The Feminine Symptom

September 2014; p ublished online May 2015 .

Chapter. Subjects: Feminist Philosophy. 10778 words.

Irigaray reads Aristotle on place in the Physics as giving a conception of sexual difference in which woman is resigned to a placeholder or container for man. This chapter deepens her...

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White dwarfs in the SuperCOSMOS Sky Survey: the thin disc, thick disc and spheroid luminosity functions

N. Rowell and N. C. Hambly.

in Monthly Notices of the Royal Astronomical Society

October 2011; p ublished online October 2011 .

Journal Article. Subjects: Astronomy and Astrophysics. 15238 words.

We present a magnitude and proper motion limited catalogue of ∼10 000 white dwarf candidates, obtained from the SuperCOSMOS Sky Survey by means of reduced proper motion selection. This...

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Curved spacetime as a gravitational field

Ta-Pei Cheng.

in Einstein's Physics

January 2013; p ublished online May 2013 .

Chapter. Subjects: Astronomy and Astrophysics. 8069 words.

Gravitational time dilation can be interpreted as showing the warpage of spacetime in the time direction. Such considerations led Einstein to propose general relativity as a gravitational...

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Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS data base

N. Phan-Bao, M. S. Bessell, E. L. Martín, G. Simon, J. Borsenberger, R. Tata, J. Guibert, F. Crifo, T. Forveille, X. Delfosse, J. Lim and B. De Batz.

in Monthly Notices of the Royal Astronomical Society

January 2008; p ublished online January 2008 .

Journal Article. Subjects: Astronomy and Astrophysics. 6474 words.

We report on new nearby L and late-M dwarfs (d phot≤ 30 pc) discovered in our search for nearby ultracool dwarfs (IJ≥ 3.0, later than M8.0) at low Galactic latitude (|b| < 15°)...

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Evidence for halo kinematics among cool carbon-rich dwarfs

J Farihi, A R Arendt, H S Machado and L J Whitehouse.

in Monthly Notices of the Royal Astronomical Society

P ublished online April 2018 .

Journal Article. Subjects: Astronomy and Astrophysics. 4801 words.

Abstract

This paper reports preliminary, yet compelling, kinematical inferences for [math] carbon-rich dwarf stars that demonstrate around 30–60 per cent are...

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Solar wind and the motion of dust grains

J. Klačka, J. Petržala, P. Pástor and L. Kómar.

in Monthly Notices of the Royal Astronomical Society

April 2012; p ublished online March 2012 .

Journal Article. Subjects: Astronomy and Astrophysics. 9732 words.

In this paper, we investigate the action of solar wind on an arbitrarily shaped interplanetary dust particle. The final relativistically covariant equation of motion of the particle also...

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A deep WISE search for very late type objects and the discovery of two halo/thick-disc T dwarfs: WISE 0013+0634 and WISE 0833+0052

D. J. Pinfield, J. Gomes, A. C. Day-Jones, S. K. Leggett, M. Gromadzki, B. Burningham, M. T. Ruiz, R. Kurtev, T. Cattermole, C. Cardoso, N. Lodieu, J. Faherty, S. Littlefair, R. Smart, M. Irwin, J. R. A. Clarke, L. Smith, P. W. Lucas, M. C. Gálvez-Ortiz, J. S. Jenkins, H. R. A. Jones, R. Rebolo, V. J. S. Béjar and B. Gauza.

in Monthly Notices of the Royal Astronomical Society

January 2014; p ublished online November 2013 .

Journal Article. Subjects: Astronomy and Astrophysics. 11340 words.

A method is defined for identifying late-T and Y dwarfs in WISE down to low values of signal-to-noise. This requires a WISE detection only in the W2-band and uses the statistical properties...

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The old nuclear star cluster in the Milky Way: dynamics, mass, statistical parallax, and black hole mass

S. Chatzopoulos, T. K. Fritz, O. Gerhard, S. Gillessen, C. Wegg, R. Genzel and O. Pfuhl.

in Monthly Notices of the Royal Astronomical Society

P ublished online December 2014 .

Journal Article. Subjects: Astronomy and Astrophysics. 14261 words.

We derive new constraints on the mass, rotation, orbit structure, and statistical parallax of the Galactic old nuclear star cluster and the mass of the supermassive black hole. We combine...

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Jacobus Cornelius Kapteyn

Overview page. Subjects: Astronomy and Astrophysics.

(1851–1922)

Dutchastronomer. He developed statistical methods for reducing and handling large amounts of observational data. Kapteyn compiled the Cape Photographic Durchmusterung,...

See overview in Oxford Index

Philosophy of Nature

Alison Stone.

in The Oxford Handbook of German Philosophy in the Nineteenth Century

February 2015; p ublished online May 2015 .

Article. Subjects: Philosophy; History of Western Philosophy. 8962 words.

The chapter examines the emergence of philosophy of nature in early nineteenth-century German thought and its elaboration by Schelling, Hegel, and Schopenhauer. The chapter identifies two...

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Descartes, Corpuscles and Reductionism: Mechanism and Systems in Descartes' Physiology

Barnaby R. Hutchins.

in The Philosophical Quarterly

October 2015; p ublished online May 2015 .

Journal Article. 9492 words.

I argue that Descartes explains physiology in terms of whole systems, and not in terms of the size, shape and motion of tiny corpuscles (corpuscular mechanics). It is a standard, entrenched...

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The present and future mass of the Milky Way halo

M. I. Wilkinson and N. W. Evans.

in Monthly Notices of the Royal Astronomical Society

December 1999; p ublished online December 1999 .

Journal Article. Subjects: Astronomy and Astrophysics. 12536 words.

Abstract

A simple model for the Milky Way halo is presented. It has a flat rotation curve in the inner regions, but the density falls off sharply beyond an...

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Trumpeting M dwarfs with CONCH-SHELL: a catalogue of nearby cool host-stars for habitable exoplanets and life

E. Gaidos, A. W. Mann, S. Lépine, A. Buccino, D. James, M. Ansdell, R. Petrucci, P. Mauas and E. J. Hilton.

in Monthly Notices of the Royal Astronomical Society

P ublished online August 2014 .

Journal Article. Subjects: Astronomy and Astrophysics. 14175 words.

We present an all-sky catalogue of 2970 nearby (d ≲ 50 pc), bright (J < 9) M- or late K-type dwarf stars, 86 per cent of which have been confirmed by spectroscopy. This catalogue will be...

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