M31SyS J004433.74+414402.8

CONFIRMED M31   Equatorial coordinates α =  11.140557 ± 2.387600 | 00 44 33.733791 δ =  41.734082 ± 4.235800 | +41 44 02.696878   Constellation Andromeda Symbiotic IR Type S Spectral Type M4 Magnitude range (V)   Outbursts No

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Identifiers

M31SyS J004433.74+414402.8	GSC –	TYC –	WRAY –
SIMBAD  M31SyS J004433.74+414402.8	HIP –	SAO –	Hen –
BD –	IRAS –	GAIA DR2 381302626698638080	ESO –
HD –	2MASS  J00443374+4144032	WISE –	AAVSO –

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Position

Right ascension (°)	11.140557 ± 2.387600refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Parallax (mas)	–	Reddening E(B-V) (mag)	0.208 ± 0.024refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	41.734082 ± 4.235800refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Distance (kpc)	785.00 ± 25.00refMcConnachie, A. W., Irwin, M. J., Ferguson, A. M. N., et al., 2005, MNRAS, 356, 979, 2005MNRAS.356..979M
Galactic longitude (°)	121.556899 ± 4.235800refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in α (mas/yr)	–
Galactic latitude (°)	-21.119310 ± 2.387600refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in δ (mas/yr)	–

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Observations

U (mag)	20.93refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M	X-Ray		Flickering
B (mag)	21.29refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M	X-Ray type		Outbursts	No
V (mag)	20.82refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M	IUE	No	Type
R (mag)		IRAS flux at 12 μm (Jy)		IPmax (eV)	114.0refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M
I (mag)	19.07refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M	IRAS flux at 25 μm (Jy)		OVI lines	YesrefMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M
G (mag)	21.17refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	IRAS flux at 60 μm (Jy)
J (mag)	16.97refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	IRAS flux at 100 μm (Jy)
H (mag)	15.98refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W1 (mag)
K (mag)	15.52refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W2 (mag)
L (mag)		WISE W3 (mag)
		WISE W4 (mag)
		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)

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Cool component

Spectral type	M4refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M	Mass (M⊙)		Pulsation	Yes?refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M
Eff. temperature (K)		Radius (R⊙)		Type	SR pulsation?refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M
IR type	SrefMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M	Luminosity (L⊙)		Pulsation period (days)	34?refBonanos, A. Z., Stanek, K. Z., Sasselov, D. D., et al., 2003, AJ, 126, 175, 2003AJ….126..175B
Metallicity [Fe/H]				Ephemeris type
				Ephemeris T0 (JD)

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Hot component

Type/Spectra		Mass (M⊙)		Spin period (min)
Eff. temperature (K)		Radius (R⊙)		Accretion disk
Lower limit (K)	100000refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M	Luminosity (L⊙)
Upper limit (K)	145000refMikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M

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Links

SIMBAD     CDS Portal

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Notes

Bonanos et al. (2003) report a variable red star, D31 J004433.7+414403.0, which they tentatively classify as Type II Cepheid. According to Mikołajewska et al. (2014), it may be M31SyS J004433.74+414402.8 and the 34-d periodicity would then reflect a SR pulsation of the red component. 

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References

• Bonanos, A. Z., Stanek, K. Z., Sasselov, D. D., et al., 2003, AJ, 126, 175, 2003AJ….126..175B
• Mikołajewska, J., Caldwell, N., Shara, M. M., 2014, MNRAS, 444, 586, 2014MNRAS.444..586M

Last updated: Jan 14, 2019 @ 2:16 pm