Epoch J2000 Equinox J2000
|Right ascension||15h 48m 40.23s|
|Declination||−35° 44′ 25.5″|
|Apparent magnitude (V)||14.78|
|Proper motion (μ)||RA: -591 mas/yr
Dec.: -538 mas/yr
|Absolute magnitude (MV)||9.5|
|Temperature||< 4500 K|
SSSPM J1549-3544, 2MASS J15484023-3544254.
SSSPM J1549-3544 is a star in the constellation Lupus with high proper motion. It was initially found to have high proper motion in a 2003 survey of images taken by the optical SuperCOSMOS Sky Surveys and by the near-infrared sky surveys 2MASS and DENIS. It was then thought to be a cool white dwarf close to the Sun. However, more detailed spectroscopic observations in 2005 appear to show that it is not a white dwarf, but a high-velocity halo metal-poor subdwarf.
- SSSPM J1549-3544 Is Not a White Dwarf, J. Farihi, P. R. Wood, and B. Stalder, Astrophysical Journal 627, #1 (July 2005), pp. L41–L43.
- The nearest cool white dwarf (d ~4 pc), the coolest M-type subdwarf (sdM9.5), and other high proper motion discoveries, R.-D. Scholz, I. Lehmann, I. Matute, and H. Zinnecker, Astronomy and Astrophysics 425 (Oct. 2004), pp. 519–527.
|This star-related article is a stub. You can help Wikipedia by expanding it.|