XMMU J172005.6+575759

CONFIRMED Draco Dwarf   Equatorial coordinates α =  260.0235487 ± 0.286100 | 17 20 05.651690 δ =  57.966232 ± 0.300700 | +57 57 58.433849   Constellation Draco Symbiotic IR Type S Spectral Type   Magnitude range (V)   Outbursts No

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Identifiers

XMMU J172005.6+575759	GSC –	TYC –	WRAY –
SIMBAD SDSS J172005.64+575758.4	HIP –	SAO –	Hen –
BD –	IRAS –	GAIA DR2 1433203270683657344	ESO –
HD –	2MASS –	WISE –	AAVSO –

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Position

Right ascension (°)	260.0235487 ± 0.286100refGaia 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)	0.025 ± 0.001refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	57.966232 ± 0.300700refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Distance (kpc)	80 ± 10refKarachentsev, I. D., Karachentseva, V. E., Huchtmeier, W. K., et al., 2004, AJ, 127, 2031, 2004AJ….127.2031K
Galactic longitude (°)	86.430826 ± 0.300700refGaia 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 (°)	34.733472 ± 0.286100refGaia 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)		X-Ray	YesrefSaeedi, S., Sasaki, M., Stelzer, B., et al., 2019, accepted in A&A, 2019arXiv190513699S	Flickering
B (mag)	20.20refKirby, E. N., Guhathakurta, P., Simon, J. D., et al., 2010, ApJS, 191, 352, 2010ApJS..191..352K	X-Ray type	βrefSaeedi, S., Sasaki, M., Stelzer, B., et al., 2019, accepted in A&A, 2019arXiv190513699S	Outbursts	No
V (mag)	19.53refKirby, E. N., Guhathakurta, P., Simon, J. D., et al., 2010, ApJS, 191, 352, 2010ApJS..191..352K	IUE	No	Type
R (mag)	19.11refKirby, E. N., Guhathakurta, P., Simon, J. D., et al., 2010, ApJS, 191, 352, 2010ApJS..191..352K	IRAS flux at 12 μm (Jy)		IPmax (eV)
I (mag)	18.59refKirby, E. N., Guhathakurta, P., Simon, J. D., et al., 2010, ApJS, 191, 352, 2010ApJS..191..352K	IRAS flux at 25 μm (Jy)		OVI lines
G (mag)	19.46refGaia 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)		IRAS flux at 100 μm (Jy)
H (mag)		WISE W1 (mag)
K (mag)		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)	-294.0refWalker, M. G., Olszewski, E. W., Mateo, M., 2015, MNRAS, 448, 2717, 2015MNRAS.448.2717W	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		Mass (M⊙)		Pulsation
Eff. temperature (K)	4973refKirby, E. N., Guhathakurta, P., Simon, J. D., et al., 2010, ApJS, 191, 352, 2010ApJS..191..352K	Radius (R⊙)		Type
IR type	SrefSaeedi, S., Sasaki, M., Stelzer, B., et al., 2019, accepted in A&A, 2019arXiv190513699S	Luminosity (L⊙)		Pulsation period (days)
Metallicity [Fe/H]	-2.28refKirby, E. N., Guhathakurta, P., Simon, J. D., et al., 2010, ApJS, 191, 352, 2010ApJS..191..352K			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)		Luminosity (L⊙)
Upper limit (K)

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Links

SIMBAD     CDS Portal

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Notes

This X-ray source was identified as a symbiotic binary by Saeedi et al. (2019). The system has no counterpart in WISE and 2MASS catalogs.

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References

• Kirby, E. N., Guhathakurta, P., Simon, J. D., et al., 2010, ApJS, 191, 352, 2010ApJS..191..352K
• Saeedi, S., Sasaki, M., Stelzer, B., et al., 2019, accepted in A&A, 2019arXiv190513699S

Last updated: Jun 11, 2019 @ 9:29 am