Gravitational redshift determinations for white dwarfs in common proper-motion binaries
Gravitational redshifts determined using the 5 m Hale telescope are given for 23 white dwarfs belonging to common proper-motion binary systems and additional velocities are presented for 14 pairs found not to comprise physical binaries or that have unmeasurable velocities. The mass distribution for...
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| Veröffentlicht in: | The Astrophysical journal 1991-07, Vol.375 (2), p.674-678 |
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| container_title | The Astrophysical journal |
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| creator | WEGNER, G REID, I. N |
| description | Gravitational redshifts determined using the 5 m Hale telescope are given for 23 white dwarfs belonging to common proper-motion binary systems and additional velocities are presented for 14 pairs found not to comprise physical binaries or that have unmeasurable velocities. The mass distribution for the common proper-motion pairs using the gravitational redshifts and the mass-radius relation peaks strongly near 0.55 solar mass, and the main details of the shape agree with earlier determinations using other methods although a problem remains with contamination with optical pairs. The redshifts and radii of a subset of these objects with known distances are consistent with the mass-radius relation for white dwarfs. 30 refs. |
| doi_str_mv | 10.1086/170230 |
| format | Article |
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N</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>WEGNER, G</au><au>REID, I. N</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Gravitational redshift determinations for white dwarfs in common proper-motion binaries</atitle><jtitle>The Astrophysical journal</jtitle><date>1991-07-10</date><risdate>1991</risdate><volume>375</volume><issue>2</issue><spage>674</spage><epage>678</epage><pages>674-678</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>Gravitational redshifts determined using the 5 m Hale telescope are given for 23 white dwarfs belonging to common proper-motion binary systems and additional velocities are presented for 14 pairs found not to comprise physical binaries or that have unmeasurable velocities. The mass distribution for the common proper-motion pairs using the gravitational redshifts and the mass-radius relation peaks strongly near 0.55 solar mass, and the main details of the shape agree with earlier determinations using other methods although a problem remains with contamination with optical pairs. The redshifts and radii of a subset of these objects with known distances are consistent with the mass-radius relation for white dwarfs. 30 refs.</abstract><cop>Chicago, IL</cop><pub>University of Chicago Press</pub><doi>10.1086/170230</doi><tpages>5</tpages></addata></record> |
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| ispartof | The Astrophysical journal, 1991-07, Vol.375 (2), p.674-678 |
| issn | 0004-637X 1538-4357 |
| language | eng |
| recordid | cdi_osti_scitechconnect_5261924 |
| source | Alma/SFX Local Collection |
| subjects | 640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources Astronomy BINARY STARS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DISTRIBUTION DWARF STARS Earth, ocean, space Exact sciences and technology Faint blue stars (including blue stragglers), white dwarfs, degenerate stars, nuclei of planetary nebulae GRAVITATION MASS MASS DISTRIBUTION Normal stars (by class): general or individual RED SHIFT SPATIAL DISTRIBUTION STARS VELOCITY WHITE DWARF STARS |
| title | Gravitational redshift determinations for white dwarfs in common proper-motion binaries |
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