| No. | Star name | Constellation | Status | Suspected (Year) | Confirmed (Year) | Right ascension (°) | Declination (°) | B (mag) | V (mag) | R (mag) | I (mag) | Gaia G (mag) | Shell-burning/Accreting-only |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | M33SyS J013219.75+303731.7 | Triangulum | Confirmed | 2017 | 2017 | 23.0822 | 30.6254 | 21.57 | 21.12 | 20.29 | 19.64 | 20.22 | shell-burning |
| 2 | M33SyS J013239.11+303836.5 | Triangulum | Confirmed | 2017 | 2017 | 23.1630 | 30.6435 | 23.60 | 22.87 | 21.59 | 20.74 | - | shell-burning |
| 3 | M33SyS J013303.27+303528.3 | Triangulum | Confirmed | 2017 | 2017 | 23.2635 | 30.5911 | 23.79 | 22.12 | 20.74 | 19.58 | 20.84 | shell-burning |
| 4 | M33SyS J013311.10+301528.2 | Triangulum | Confirmed | 2017 | 2017 | 23.2960 | 30.2577 | - | 23.25 | 21.53 | 20.32 | - | shell-burning |
| 5 | M33SyS J013327.01+304045.8 | Triangulum | Confirmed | 2017 | 2017 | 23.3625 | 30.6794 | - | 23.31 | 22.13 | 20.59 | - | shell-burning |
| 6 | M33SyS J013334.95+305108.3 | Triangulum | Confirmed | 2017 | 2017 | 23.3956 | 30.8523 | - | 23.49 | 21.68 | 20.44 | - | shell-burning |
| 7 | M33SyS J013417.72+304119.5 | Triangulum | Confirmed | 2017 | 2017 | 23.5738 | 30.6888 | - | 23.17 | 21.57 | 20.33 | - | shell-burning |
| 8 | M33SyS J013430.14+303346.0 | Triangulum | Confirmed | 2017 | 2017 | 23.6255 | 30.5627 | 23.13 | 22.65 | 21.32 | 20.17 | - | shell-burning |
| 9 | M33SyS J013435.17+303409.4 | Triangulum | Confirmed | 2017 | 2017 | 23.6464 | 30.5693 | - | 23.79 | 22.14 | 20.59 | - | shell-burning |
| 10 | M33SyS J013449.50+304736.9 | Triangulum | Confirmed | 2017 | 2017 | 23.7061 | 30.7936 | 23.19 | 21.48 | 20.30 | 19.46 | 20.73 | shell-burning |
| 11 | M33SyS J013457.79+310054.2 | Triangulum | Confirmed | 2017 | 2017 | 23.7407 | 31.0151 | - | 23.52 | 21.95 | 20.54 | - | shell-burning |
| 12 | M33SyS J013510.81+305146.8 | Triangulum | Confirmed | 2017 | 2017 | 23.7950 | 30.8629 | 23.29 | 22.47 | 21.14 | 20.29 | - | shell-burning |
| No. | Star name | Status | SIMBAD | Gaia DR3 | 2MASS | WISE | IRAS | Pan-STARRS | SkyMapper | HIP | TYC | GSC2.4.2 | SAO | WRAY | Hen | ESO | AAVSO | VSX | GCVS | BD | HD |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | M33SyS J013219.75+303731.7 | Confirmed | M33SyS J013219.75+303731.7 | 315296950814336512 | - | - | - | 144750230821941062 | - | - | - | NBXZ002205 | - | - | - | - | - | - | - | - | - |
| 2 | M33SyS J013239.11+303836.5 | Confirmed | M33SyS J013239.11+303836.5 | - | - | - | - | 144770231628632866 | - | - | - | NBXZ067893 | - | - | - | - | - | - | - | - | - |
| 3 | M33SyS J013303.27+303528.3 | Confirmed | M33SyS J013303.27+303528.3 | 303287775579028736 | - | J013303.21+303525.9 | 01301+3019 | 144700232634349894 | - | - | - | NBXZ001819 | - | - | - | - | - | - | - | - | - |
| 4 | M33SyS J013311.10+301528.2 | Confirmed | M33SyS J013311.10+301528.2 | - | - | - | - | 144300232960359905 | - | - | - | NBWR027846 | - | - | - | - | - | - | - | - | - |
| 5 | M33SyS J013327.01+304045.8 | Confirmed | M33SyS J013327.01+304045.8 | - | - | - | 01306+3025 | 144810233623915641 | - | - | - | NBXX106893 | - | - | - | - | - | - | - | - | - |
| 6 | M33SyS J013334.95+305108.3 | Confirmed | M33SyS J013334.95+305108.3 | - | - | - | - | 145020233955333251 | - | - | - | NBXZ004523 | - | - | - | - | - | - | - | - | - |
| 7 | M33SyS J013417.72+304119.5 | Confirmed | M33SyS J013417.72+304119.5 | - | - | - | - | 144820235737447055 | - | - | - | NBXX083003 | - | - | - | - | - | - | - | - | - |
| 8 | M33SyS J013430.14+303346.0 | Confirmed | M33SyS J013430.14+303346.0 | - | - | - | - | 144670236254055856 | - | - | - | NBXX116376 | - | - | - | - | - | - | - | - | - |
| 9 | M33SyS J013435.17+303409.4 | Confirmed | M33SyS J013435.17+303409.4 | - | - | - | - | 144680236462953671 | - | - | - | NBXX098394 | - | - | - | - | - | - | - | - | - |
| 10 | M33SyS J013449.50+304736.9 | Confirmed | M33SyS J013449.50+304736.9 | 303376393640103680 | - | - | - | 144950237061092958 | - | - | - | NBXX007848 | - | - | - | - | - | - | - | - | - |
| 11 | M33SyS J013457.79+310054.2 | Confirmed | M33SyS J013457.79+310054.2 | - | - | J013457.90+310056.2 | - | 145210237406648707 | - | - | - | NBXX013553 | - | - | - | - | - | - | - | - | - |
| 12 | M33SyS J013510.81+305146.8 | Confirmed | M33SyS J013510.81+305146.8 | - | - | - | - | 145030237949416180 | - | - | - | NBXX051147 | - | - | - | - | - | - | - | - | - |
| No. | Star name | Status | Bidelman (1954) | Bidelman (1954) status | Gaposchkin (1957) | Gaposchkin (1957) status | Boyarchuk (1969) | Boyarchuk (1969) status | Allen (1984) | Allen (1984) status | Kenyon (1986) | Kenyon (1986) status | Vaidis (1988, 1991) | Vaidis (1988, 1991) status | Belzcyński et al. (2001) | Belzcyński et al. (2001) status | Akras et al. (2019) | Akras et al. (2019) status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | M33SyS J013219.75+303731.7 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-1 | Confirmed |
| 2 | M33SyS J013239.11+303836.5 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-2 | Confirmed |
| 3 | M33SyS J013303.27+303528.3 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-3 | Confirmed |
| 4 | M33SyS J013311.10+301528.2 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-4 | Confirmed |
| 5 | M33SyS J013327.01+304045.8 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-5 | Confirmed |
| 6 | M33SyS J013334.95+305108.3 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-6 | Confirmed |
| 7 | M33SyS J013417.72+304119.5 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-7 | Confirmed |
| 8 | M33SyS J013430.14+303346.0 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-8 | Confirmed |
| 9 | M33SyS J013435.17+303409.4 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-9 | Confirmed |
| 10 | M33SyS J013449.50+304736.9 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-10 | Confirmed |
| 11 | M33SyS J013457.79+310054.2 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-11 | Confirmed |
| 12 | M33SyS J013510.81+305146.8 | Confirmed | - | - | - | - | - | - | - | - | - | - | - | - | - | - | M33 SySt-12 | Confirmed |
| No. | Star name | Status | Constellation | Right ascension (°) | Right ascension (HH MM SS.s) | Declination (°) | Declination (DD MM SS.s) | Galactic longitude (°) | Galactic latitude (°) | Parallax (mas) | Distance (kpc) | Geometric distance (kpc) | Photogeometric distance (kpc) | Proper motion in right ascension (mas/yr) | Proper motion in declination (mas/yr) | Reddening E(B-V) (mag) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | M33SyS J013219.75+303731.7 | Confirmed | Triangulum | 23.0822 | 01 32 19.726 | 30.6254 | +30 37 31.534 | 133.2419 | -31.4264 | -1.017 | 847 | 1.97 | 5.39 | -0.55 | 0.59 | 0.04 |
| 2 | M33SyS J013239.11+303836.5 | Confirmed | Triangulum | 23.1630 | 01 32 39.110 | 30.6435 | +30 38 36.492 | 133.3180 | -31.3957 | - | 847 | - | - | - | - | 0.04 |
| 3 | M33SyS J013303.27+303528.3 | Confirmed | Triangulum | 23.2635 | 01 33 03.234 | 30.5911 | +30 35 28.074 | 133.4290 | -31.4309 | - | 847 | - | - | - | - | 0.04 |
| 4 | M33SyS J013311.10+301528.2 | Confirmed | Triangulum | 23.2960 | 01 33 11.036 | 30.2577 | +30 15 27.788 | 133.5353 | -31.7530 | - | 847 | - | - | - | - | 0.04 |
| 5 | M33SyS J013327.01+304045.8 | Confirmed | Triangulum | 23.3625 | 01 33 27.010 | 30.6794 | +30 40 45.804 | 133.5075 | -31.3282 | - | 847 | - | - | - | - | 0.04 |
| 6 | M33SyS J013334.95+305108.3 | Confirmed | Triangulum | 23.3956 | 01 33 34.951 | 30.8523 | +30 51 08.316 | 133.5017 | -31.1530 | - | 847 | - | - | - | - | 0.04 |
| 7 | M33SyS J013417.72+304119.5 | Confirmed | Triangulum | 23.5738 | 01 34 17.719 | 30.6888 | +30 41 19.500 | 133.7141 | -31.2841 | - | 847 | - | - | - | - | 0.04 |
| 8 | M33SyS J013430.14+303346.0 | Confirmed | Triangulum | 23.6255 | 01 34 30.122 | 30.5627 | +30 33 45.878 | 133.7939 | -31.3991 | - | 847 | - | - | - | - | 0.04 |
| 9 | M33SyS J013435.17+303409.4 | Confirmed | Triangulum | 23.6464 | 01 34 35.140 | 30.5693 | +30 34 09.494 | 133.8131 | -31.3891 | - | 847 | - | - | - | - | 0.04 |
| 10 | M33SyS J013449.50+304736.9 | Confirmed | Triangulum | 23.7061 | 01 34 49.473 | 30.7936 | +30 47 36.935 | 133.8207 | -31.1591 | -0.846 | 847 | 1.31 | 3.31 | 4.55 | -3.19 | 0.04 |
| 11 | M33SyS J013457.79+310054.2 | Confirmed | Triangulum | 23.7407 | 01 34 57.769 | 31.0151 | +31 00 54.418 | 133.8040 | -30.9361 | - | 847 | - | - | - | - | 0.04 |
| 12 | M33SyS J013510.81+305146.8 | Confirmed | Triangulum | 23.7950 | 01 35 10.791 | 30.8629 | +30 51 46.508 | 133.8922 | -31.0762 | - | 847 | - | - | - | - | 0.04 |
| No. | Star name | Status | X-ray detection | X-ray type | GALEX FUV (mag) | GALEX NUV (mag) | IUE | FUSE | U (mag) | B (mag) | V (mag) | R (mag) | I (mag) | Gaia BP (mag) | Gaia G (mag) | Gaia RP (mag) | IR type | J (mag) | H (mag) | K (mag) | WISE W1 (mag) | WISE W2 (mag) | WISE W3 (mag) | WISE W4 (mag) | IRAS 12μm (Jy) | IRAS 25μm (Jy) | IRAS 60μm (Jy) | IRAS 100μm (Jy) | AKARI S09 (Jy) | AKARI S18 (Jy) | Radio detection | Flickering | Outbursts | Outburst type | Jets | Resolved nebula | IPmax (eV) | [O III] lines | He II lines | [Fe VII] lines | O VI lines |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | M33SyS J013219.75+303731.7 | Confirmed | No | - | - | - | No | No | 20.93 | 21.57 | 21.12 | 20.29 | 19.64 | 20.74 | 20.22 | 19.49 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 114 | Yes | Yes | No | Yes |
| 2 | M33SyS J013239.11+303836.5 | Confirmed | No | - | - | - | No | No | 23.64 | 23.60 | 22.87 | 21.59 | 20.74 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 54.4 | Yes | Yes | No | No |
| 3 | M33SyS J013303.27+303528.3 | Confirmed | No | - | - | - | No | No | 23.52 | 23.79 | 22.12 | 20.74 | 19.58 | 21.10 | 20.84 | 19.73 | - | - | - | - | 15.31 | 15.84 | 12.65 | 9.23 | 0.38 | 0.29 | 0.97 | 4.89 | - | - | - | - | - | - | - | - | 114 | Yes | Yes | Yes | Yes |
| 4 | M33SyS J013311.10+301528.2 | Confirmed | No | - | - | - | No | No | - | - | 23.25 | 21.53 | 20.32 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 114 | No | Yes | No | Yes |
| 5 | M33SyS J013327.01+304045.8 | Confirmed | No | - | - | - | No | No | - | - | 23.31 | 22.13 | 20.59 | - | - | - | - | - | - | - | - | - | - | - | 0.34 | 1.92 | 13.30 | 27.50 | - | - | - | - | - | - | - | - | 54.4 | Yes | Yes | No | No |
| 6 | M33SyS J013334.95+305108.3 | Confirmed | No | - | - | - | No | No | - | - | 23.49 | 21.68 | 20.44 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 54.4 | Yes | Yes | No | No |
| 7 | M33SyS J013417.72+304119.5 | Confirmed | No | β | - | - | No | No | - | - | 23.17 | 21.57 | 20.33 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 54.4 | Yes | Yes | No | No |
| 8 | M33SyS J013430.14+303346.0 | Confirmed | No | - | - | - | No | No | 22.48 | 23.13 | 22.65 | 21.32 | 20.17 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 114 | Yes | Yes | No | Yes |
| 9 | M33SyS J013435.17+303409.4 | Confirmed | No | - | - | - | No | No | - | - | 23.79 | 22.14 | 20.59 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 54.4 | No | Yes | No | No |
| 10 | M33SyS J013449.50+304736.9 | Confirmed | No | - | - | - | No | No | 22.86 | 23.19 | 21.48 | 20.30 | 19.46 | 21.59 | 20.73 | 19.78 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 54.4 | Yes | Yes | No | No |
| 11 | M33SyS J013457.79+310054.2 | Confirmed | No | - | - | - | No | No | - | - | 23.52 | 21.95 | 20.54 | - | - | - | - | - | - | - | 17.11 | 16.74 | 12.69 | 9.06 | - | - | - | - | - | - | - | - | - | - | - | - | 114 | Yes | Yes | Yes | Yes |
| 12 | M33SyS J013510.81+305146.8 | Confirmed | No | - | - | - | No | No | 22.66 | 23.29 | 22.47 | 21.14 | 20.29 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 54.4 | Yes | Yes | No | No |
| No. | Star name | Status | Orbital period (days) | Eccentricity | Inclination (°) | Eclipses | γ velocity (km/h) | RV of the giant (km/h) | Inferior conj. of the giant (JD) | Size of the giant’s orbit (AU) | Separation (AU) | Mass function | Mass ratio |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | M33SyS J013219.75+303731.7 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 2 | M33SyS J013239.11+303836.5 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 3 | M33SyS J013303.27+303528.3 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 4 | M33SyS J013311.10+301528.2 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 5 | M33SyS J013327.01+304045.8 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 6 | M33SyS J013334.95+305108.3 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 7 | M33SyS J013417.72+304119.5 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 8 | M33SyS J013430.14+303346.0 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 9 | M33SyS J013435.17+303409.4 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| 10 | M33SyS J013449.50+304736.9 | Confirmed | 500 | - | - | - | - | - | - | - | - | - | - |
| 11 | M33SyS J013457.79+310054.2 | Confirmed | 300 | - | - | - | - | - | - | - | - | - | - |
| 12 | M33SyS J013510.81+305146.8 | Confirmed | - | - | - | - | - | - | - | - | - | - | - |
| No. | Star name | Status | Spectral type of the giant | Effective temperature of the giant (K) | Metallicity [Fe/H] | Mass of the giant (M⊙) | Radius of the giant (R⊙) | Luminosity of the giant (L⊙) | Pulsations | Pulsation type | Pulsation period (days) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | M33SyS J013219.75+303731.7 | Confirmed | K-M | - | - | - | - | - | - | - | - |
| 2 | M33SyS J013239.11+303836.5 | Confirmed | CH | - | - | - | - | - | - | - | - |
| 3 | M33SyS J013303.27+303528.3 | Confirmed | CN | - | - | - | - | - | Yes | low-amplitude SR | 100 |
| 4 | M33SyS J013311.10+301528.2 | Confirmed | M5 | - | - | - | - | - | Yes | - | - |
| 5 | M33SyS J013327.01+304045.8 | Confirmed | M | - | - | - | - | - | Yes | - | - |
| 6 | M33SyS J013334.95+305108.3 | Confirmed | M | - | - | - | - | - | - | - | - |
| 7 | M33SyS J013417.72+304119.5 | Confirmed | M | - | - | - | - | - | - | - | - |
| 8 | M33SyS J013430.14+303346.0 | Confirmed | M2 | - | - | - | - | - | - | - | - |
| 9 | M33SyS J013435.17+303409.4 | Confirmed | CN | - | - | - | - | - | Yes | Mira | 300 |
| 10 | M33SyS J013449.50+304736.9 | Confirmed | CN | - | - | - | - | - | Yes | low-amplitude SR | - |
| 11 | M33SyS J013457.79+310054.2 | Confirmed | M4 | - | - | - | - | - | - | - | - |
| 12 | M33SyS J013510.81+305146.8 | Confirmed | M4 | - | - | - | - | - | Yes | low-amplitude SR | - |
| No. | Star name | Status | Hot component type | Shell-burning/Accreting-only | Effective temperature of the hot component (K) | Lower limit (K) | Upper limit (K) | Mass of the hot component (M⊙) | Radius of the hot component (R⊙) | Luminosity of the hot component (L⊙) | Spin period (min) | Accretion disk |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | M33SyS J013219.75+303731.7 | Confirmed | - | shell-burning | - | 114000 | 153000 | - | - | - | - | - |
| 2 | M33SyS J013239.11+303836.5 | Confirmed | - | shell-burning | - | 54000 | 132000 | - | - | - | - | - |
| 3 | M33SyS J013303.27+303528.3 | Confirmed | - | shell-burning | - | 114000 | 176000 | - | - | - | - | - |
| 4 | M33SyS J013311.10+301528.2 | Confirmed | - | shell-burning | - | 114000 | 159000 | - | - | - | - | - |
| 5 | M33SyS J013327.01+304045.8 | Confirmed | - | shell-burning | - | 54000 | 131000 | - | - | - | - | - |
| 6 | M33SyS J013334.95+305108.3 | Confirmed | - | shell-burning | - | 54000 | 94000 | - | - | - | - | - |
| 7 | M33SyS J013417.72+304119.5 | Confirmed | - | shell-burning | - | 54000 | 116000 | - | - | - | - | - |
| 8 | M33SyS J013430.14+303346.0 | Confirmed | - | shell-burning | - | 114000 | 169000 | - | - | - | - | - |
| 9 | M33SyS J013435.17+303409.4 | Confirmed | - | shell-burning | - | 54000 | 142000 | - | - | - | - | - |
| 10 | M33SyS J013449.50+304736.9 | Confirmed | - | shell-burning | - | 54000 | 144000 | - | - | - | - | - |
| 11 | M33SyS J013457.79+310054.2 | Confirmed | - | shell-burning | - | 114000 | 176000 | - | - | - | - | - |
| 12 | M33SyS J013510.81+305146.8 | Confirmed | - | shell-burning | - | 54000 | 127000 | - | - | - | - | - |