LP 131-66 - A color class 'm' white dwarf

Abstract

view Abstract Citations (19) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS LP 131-66: a color class "m" white dwarf. Liebert, J. ; Dahn, C. C. ; Gresham, M. ; Hege, E. K. ; Moore, R. L. ; Romanishin, W. ; Strittmatter, P. A. Abstract A cool degenerate star with very red colors is reported. The colors are V = 17.77, B-V = 1.47, (V-R)J = 1.15, and (V-I)KM = 1.29. The B-V color is substantially redder than in any previous low-luminosity degenerate except the blanketed LP 701-29; yet in this case there are no obvious features in the optical spectrum. Comparison is made with BVI colors presented for other cool white dwarfs and with model-atmosphere predictions. Considerable scatter and evidence for blanketing are noted in the colors of the very cool stars. One interpretation of the extreme colors of LP 131-66 is that it has a temperature substantially below 4000 K, probably with a helium-rich atmosphere. An alternative possibility is that peculiar blanketing, not apparent in the spectroscopic observations, reddens the optical energy distribution, with the star having a somewhat higher temperature. Publication: The Astrophysical Journal Pub Date: April 1979 DOI: 10.1086/156945 Bibcode: 1979ApJ...229..196L Keywords: Late Stars; M Stars; Stellar Spectrophotometry; White Dwarf Stars; Astronomical Catalogs; Atmospheric Models; Cool Stars; Stellar Atmospheres; Stellar Motions; Stellar Temperature; Astrophysics; Photometry:White Dwarfs; Spectra:White Dwarfs; Two-Color Diagrams:White Dwarfs full text sources ADS | data products SIMBAD (22) GCPD (1)