Ma 51
SUSPECTED
SMC
Constellation
Tucana |
Equatorial coordinates
α = 00 43 34.124
δ = -73 13 25.179 |
Galactic coordinates
l = 303.7197°
b = -43.8926° |
Suspected |
2002Ref |
Confirmed |
- |
Symbiotic IR type |
S?Ref |
Hot component type |
- |
Outbursts |
- |
|
|
Symbiotic Catalogs
Bidelman (1954) |
- |
Allen (1984) |
- |
Belzcyński et al. (2001) |
- |
Gaposchkin (1957) |
- |
Kenyon (1986) |
- |
Akras et al. (2019) |
- |
Boyarchuk (1969) |
- |
Vaidis (1988, 1991) |
- |
Position
Right ascension (°) |
10.8922Ref |
Parallax (mas) |
-0.005±0.105Ref |
Reddening E(B-V) (mag) |
0.32±0.1Ref, Note |
Declination (°) |
-73.2237Ref |
Distance (kpc) |
62.1±1.9Ref 6.16Ref, Note, 5.25Ref, Note |
|
|
Galactic longitude (°) |
303.7197Ref |
Proper motion in α (mas/yr) |
1.32±0.12Ref |
|
|
Galactic latitude (°) |
-43.8926Ref |
Proper motion in δ (mas/yr) |
-1.39±0.13Ref |
|
|
Observations
X-Ray |
NoRef |
IR type |
S?Ref |
Radio |
- |
X-Ray type |
- |
J (mag) |
12.48Ref |
Flickering |
- |
GALEX FUV (mag) |
- |
H (mag) |
11.75Ref |
Outbursts |
- |
GALEX NUV (mag) |
- |
K (mag) |
11.61Ref |
Outburst type |
- |
IUE |
NoRef |
WISE W1 (mag) |
11.45Ref |
Jets |
- |
FUSE |
NoRef |
WISE W2 (mag) |
11.55Ref |
Resolved nebula |
- |
U (mag) |
14.89Ref |
WISE W3 (mag) |
11.48Ref |
IPmax (eV) |
13.6Ref |
B (mag) |
15.31Ref |
WISE W4 (mag) |
9.27Ref |
[O III] lines |
NoRef |
V (mag) |
14.31Ref |
IRAS 12μm (Jy) |
- |
He II lines |
NoRef |
R (mag) |
- |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
NoRef |
I (mag) |
13.29Ref |
IRAS 60μm (Jy) |
- |
O VI lines |
NoRef |
BP (mag) |
14.76Ref |
IRAS 100μm (Jy) |
- |
|
|
G (mag) |
14.27Ref |
AKARI S09 (Jy) |
- |
|
|
RP (mag) |
13.45Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
Orbital period (days) |
- |
γ velocity (km/h) |
134.38±6.95Ref |
Size of giant’s orbit (AU) |
- |
Eccentricity |
- |
RV of giant (km/h) |
- |
Separation (AU) |
- |
Inclination (°) |
- |
Inferior conj. of giant (JD) |
- |
Mass function |
- |
Eclipses |
- |
|
|
Mass ratio |
- |
Orbital ephemeris |
- |
|
|
|
|
Cool component
Spectral type |
K-MRef |
Mass (M⊙) |
- |
Pulsation |
YesRef |
Eff. temperature (K) |
- |
Radius (R⊙) |
- |
Type |
- |
IR type |
S?Ref |
Luminosity (L⊙) |
- |
Pulsation period (days) |
186.98Ref |
Metallicity [Fe/H] |
- |
|
|
Pulsation ephemeris |
- |
Hot component
Type/Spectral type |
- |
Mass (M⊙) |
- |
Spin period (min) |
- |
Shell-burning/Accreting-only |
- |
Radius (R⊙) |
- |
Accretion disk |
- |
Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
Lower limit (K) |
- |
|
|
|
|
Upper limit (K) |
- |
|
|
|
|
Notes
Included in the list of possible symbiotic stars or closely related objects in Munari & Zwitter (2002), only Balmer lines are visible in the spectra. Classified as a red supergiant star in Boyer et al. (2011). Identified as a long-period variable in Soszyński et al. (2011), where they obtained a period of 186.98 days.
References
- Boyer, M. L., Srinivasan, S., van Loon, J. T. et al., 2011, AJ, 142, 4, 103, 2011AJ....142..103B
- Munari, U., Zwitter, T., 2002, A&A, 383, 188, 2002A&A...383..188M
- Soszyński, I., Udalski, A., Szymański, M. K. et al., 2011, AcA, 61, 3, 217, 2011AcA....61..217S
Last updated: May 2, 2022