CONFIRMED M31
Equatorial coordinates
α = 9.692329 | 00 38 46.159000
δ = 40.121388 | +40 07 16.995000 |
|
| Constellation |
Andromeda |
| Symbiotic IR Type |
S |
| Spectral Type |
M4 |
| Magnitude range (V) |
|
| Outbursts |
No |
|
|
Identifiers
| M31SyS J003846.16+400717.0 |
GSC – |
TYC – |
WRAY – |
| SIMBAD M31SyS J003846.16+400717.0 |
HIP – |
SAO – |
Hen – |
| BD – |
IRAS – |
GAIA DR2 – |
ESO – |
| HD – |
2MASS – |
WISE – |
AAVSO – |
Position
| Right ascension (°) |
9.692329 |
Parallax (mas) |
– |
Reddening E(B-V) (mag) |
0.054 ± 0.002 |
| Declination (°) |
40.121388 |
Distance (kpc) |
785.00 ± 25.00 |
|
|
| Galactic longitude (°) |
120.307397 |
Proper motion in α (mas/yr) |
– |
|
|
| Galactic latitude (°) |
-22.685795 |
Proper motion in δ (mas/yr) |
– |
|
|
Observations
| U (mag) |
|
X-Ray |
|
Flickering |
|
| B (mag) |
|
X-Ray type |
|
Outbursts |
No |
| V (mag) |
|
IUE |
No |
Type |
|
| R (mag) |
|
IRAS flux at 12 μm (Jy) |
|
IPmax (eV) |
233.6 |
| I (mag) |
20.77 |
IRAS flux at 25 μm (Jy) |
|
OVI lines |
Yes |
| G (mag) |
|
IRAS flux at 60 μm (Jy) |
|
|
|
| J (mag) |
|
IRAS flux at 100 μm (Jy) |
|
|
|
| H (mag) |
|
WISE W1 (mag) |
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|
|
| K (mag) |
|
WISE W2 (mag) |
|
|
|
| L (mag) |
|
WISE W3 (mag) |
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|
|
| |
|
WISE W4 (mag) |
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|
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| |
|
Radio |
|
|
|
| |
|
Radio flux (mJy) |
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|
|
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 |
|
| Ephemeris type |
|
|
|
Mass ratio |
|
| Ephemeris T0 (JD) |
|
|
|
|
|
Cool component
| Spectral type |
M4 |
Mass (M⊙) |
|
Pulsation |
|
| Eff. temperature (K) |
|
Radius (R⊙) |
|
Type |
|
| IR type |
S |
Luminosity (L⊙) |
|
Pulsation period (days) |
|
| Metallicity [Fe/H] |
|
|
|
Ephemeris type |
|
| |
|
|
|
Ephemeris T0 (JD) |
|
Hot component
| Type/Spectra |
|
Mass (M⊙) |
|
Spin period (min) |
|
| Eff. temperature (K) |
|
Radius (R⊙) |
|
Accretion disk |
|
| Lower limit (K) |
235000 |
Luminosity (L⊙) |
|
|
|
| Upper limit (K) |
320000 |
|
|
|
|
Links
SIMBAD CDS Portal
Notes
The highest ionization emission line detected is coronal [Fe X] 6375 Å and this according to Mikołajewska et al. (2014) is strongly suggesting that this system may be supersoft X-ray source.
References
- Mikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M
Last updated: Jan 12, 2019 @ 2:30 pm
