NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
LP 400-22, A Very Low Mass and High-Velocity White DwarfWe report the identification of LP 400-22 (WD 2234+222) as a very low mass and high-velocity white dwarf. The ultraviolet GALEX and optical photometric colors and a spectral line analysis of LP 400-22 show this star to have an effective temperature of 11,080+/-140 K and a surface gravity of log g = 6.32 +/-0.08. Therefore, this is a helium-core white dwarf with a mass of 0.17 M,. The tangential velocity of this white dwarf is 414+/-43 km/s, making it one of the fastest moving white dwarfs known. We discuss probable evolutionary scenarios for this remarkable object.
Document ID
20070021222
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/505143
Authors
Kawka, Adela (Ceskoslovenska Akademie Ved Ondrejov, Czechoslovakia)
Vennes, Stephane (Florida Inst. of Tech. Melbourne, FL, United States)
Oswalt, Terry D. (Florida Inst. of Tech. Melbourne, FL, United States)
Smith, J. Allyn (Florida Inst. of Tech. Melbourne, FL, United States)
Silvestri, Nicole M. (Washington Univ. Seattle, WA, United States)
Date Acquired
August 23, 2013
Publication Date
June 1, 2006
Publication Information
Publication: The Astrophysical Journal
Volume: 643
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NSF AST-02-05875
CONTRACT_GRANT: NNG05GE33G
CONTRACT_GRANT: NGT-51086
CONTRACT_GRANT: NST-200415
CONTRACT_GRANT: NNG05GL42G
CONTRACT_GRANT: NSF AST-02-06115
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.

Related Records

There are no records associated with this record.
No Preview Available