Free Access

Table 1

Several important stellar, orbital and stellar-wind parameters of the η Car binary system and their values as determined by various studies.

Parameter Value Reference

d 2.3    ±    0.1 kpc Davidson & Humphreys (1997)
P 2024    ±    2 d Corcoran et al. (2005)
i 45° Okazaki et al. (2008)
e 0.9 Smith et al. (2004)
Φ 27° Okazaki et al. (2008)
0−30° Parkin et al. (2009)
a 15.4 AU Corcoran (2001)
M A 90 M Hillier et al. (2001)
M B 30 M Verner et al. (2005)
A 10-3M yr-1 Hillier et al. (2001)
2.5 × 10-4M yr-1 Pittard & Corcoran (2002)
B 10-5M yr-1 Pittard & Corcoran (2002)
1.5 × 10-5M yr-1 Parkin et al. (2009)
V ∞,   A 500 km s-1 Hillier et al. (2001)
V ∞,   B 3000 km s-1 Pittard & Corcoran (2002)

Notes. P and d are the orbital period and the distance from the Earth. i, e and a are inclination angle, eccentricity and semi-major axis. The parameter Φ represents the angle between the projection of the orbital plane along the line of sight and the apastron side of the semi-major axis in the prograde direction: Φ = 270°−ω, with ω being the commonly used periastron longitude angle. M, and V are stellar mass, mass-loss rate and terminal velocity of the stellar wind for the stars A and B in the system.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.