M33SyS J013219.75+303731.7
CONFIRMED
M33
Constellation
Triangulum |
Equatorial coordinates
α = 01 32 19.726
δ = +30 37 31.534 |
Galactic coordinates
l = 133.2419°
b = -31.4264° |
| Suspected |
2017Ref |
| Confirmed |
2017Ref |
| Symbiotic IR type |
- |
| Hot component type |
shell-burningRef |
| Outbursts |
- |
|
|
Symbiotic Catalogs
| Bidelman (1954) |
- |
Allen (1984) |
- |
Belzcyński et al. (2001) |
- |
| Gaposchkin (1957) |
- |
Kenyon (1986) |
- |
Akras et al. (2019) |
M33 SySt-1 (Conf.) |
| Boyarchuk (1969) |
- |
Vaidis (1988, 1991) |
- |
Position
| Right ascension (°) |
23.0822Ref |
Parallax (mas) |
-1.017±0.770Ref |
Reddening E(B-V) (mag) |
0.04±0.0Ref, Note |
| Declination (°) |
30.6254Ref |
Distance (kpc) |
847±60Ref
1.97Ref, Note, 5.39Ref, Note |
|
|
| Galactic longitude (°) |
133.2419Ref |
Proper motion in α (mas/yr) |
-0.55±0.75Ref |
|
|
| Galactic latitude (°) |
-31.4264Ref |
Proper motion in δ (mas/yr) |
0.59±0.47Ref |
|
|
Observations
| X-Ray |
NoRef |
IR type |
- |
Radio |
- |
| X-Ray type |
- |
J (mag) |
- |
Flickering |
- |
| GALEX FUV (mag) |
- |
H (mag) |
- |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
- |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
- |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
- |
Resolved nebula |
- |
| U (mag) |
20.93Ref |
WISE W3 (mag) |
- |
IPmax (eV) |
114Ref |
| B (mag) |
21.57Ref |
WISE W4 (mag) |
- |
[O III] lines |
YesRef |
| V (mag) |
21.12Ref |
IRAS 12μm (Jy) |
- |
He II lines |
YesRef |
| R (mag) |
20.29Ref |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
NoRef |
| I (mag) |
19.64Ref |
IRAS 60μm (Jy) |
- |
O VI lines |
YesRef |
| BP (mag) |
20.74Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
20.22Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
19.49Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
| Orbital period (days) |
- |
γ velocity (km/h) |
- |
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 |
- |
| Eff. temperature (K) |
- |
Radius (R⊙) |
- |
Type |
- |
| IR type |
- |
Luminosity (L⊙) |
- |
Pulsation period (days) |
- |
| Metallicity [Fe/H] |
- |
|
|
Pulsation ephemeris |
- |
Hot component
| Type/Spectral type |
- |
Mass (M⊙) |
- |
Spin period (min) |
- |
| Shell-burning/Accreting-only |
shell-burningRef |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
114000Ref |
|
|
|
|
| Upper limit (K) |
153000Ref |
|
|
|
|
Notes
Initially classified as a Cepheid with a period of 23.11 days by Hartman et al. (2006), subsequent analysis by Mikołajewska et al. (2017) argued that the light curves, as well as the spectrum, are incompatible with such a classification.
References
- Hartman, J. D., Bersier, D., Stanek, K. Z. et al., 2006, MNRAS, 371, 3, 1405, 2006MNRAS.371.1405H
- Mikołajewska, J., Shara, M. M., Caldwell, N. et al., 2017, MNRAS, 465, 2, 1699, 2017MNRAS.465.1699M
Last updated: January 13, 2019