LIN 9

CONFIRMED SMC   Equatorial coordinates α =  7.530781 ± 0.031503 | 00 30 07.385688 δ =  -73.621971 ± 0.026315 | -73 37 19.082127   Constellation Tucana Symbiotic IR Type S🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A Spectral Type K5 Magnitude range (V) 14.8-16.3refWatson, C. L., Henden, A. A., Price, A., 2006, Society for Astronomical Sciences Annual Symposium, 25, 47, 2006SASS…25…47W Outbursts Z And

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Identifiers

LIN 9	GSC –	TYC –	WRAY –
SIMBAD LIN 9	HIP –	SAO –	Hen –
BD –	IRAS –	GAIA DR2 4688455814367629440	ESO –
HD –	2MASS J00300739-7337190	WISE J003007.39-733718.9	AAVSO 000-BMM-714

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Position

Right ascension (°)	7.530781 ± 0.031503refGaia 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)	0.036 ± 0.002refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	-73.621971 ± 0.026315refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Distance (kpc)	62.10 ± 1.90refHilditch, R. W., Howarth, I. D., Harries, T. J., 2005, MNRAS, 357, 304, 2005MNRAS.357..304H
Galactic longitude (°)	304.998090 ± 0.026315refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in α (mas/yr)	0.460236 ± 0.058336refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G
Galactic latitude (°)	-43.420669 ± 0.031503refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in δ (mas/yr)	-0.925735 ± 0.052193refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G

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Observations

U (mag)	17.71refBoyer, M. L., Srinivasan, S., van Loon, J. T., et al., 2011, AJ, 142, 103, 2011AJ….142..103B	X-Ray		Flickering
B (mag)	17.44refBoyer, M. L., Srinivasan, S., van Loon, J. T., et al., 2011, AJ, 142, 103, 2011AJ….142..103B	X-Ray type		Outbursts	YesrefMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M
V (mag)	15.91refBoyer, M. L., Srinivasan, S., van Loon, J. T., et al., 2011, AJ, 142, 103, 2011AJ….142..103B	IUE	No	Type	Z AndrefMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M
R (mag)		IRAS flux at 12 μm (Jy)		IPmax (eV)	114.0refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M
I (mag)	14.29refBoyer, M. L., Srinivasan, S., van Loon, J. T., et al., 2011, AJ, 142, 103, 2011AJ….142..103B	IRAS flux at 25 μm (Jy)		OVI lines	YesrefMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M
G (mag)	15.51refGaia 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)	13.29refCutri, 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)	12.44refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W1 (mag)	12.14refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
K (mag)	12.27refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W2 (mag)	12.17refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
L (mag)		WISE W3 (mag)	12.15refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		WISE W4 (mag)	8.90refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		Radio
		Radio flux (mJy)

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Orbit

Orbital period (days)	∼500-600?refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M	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	K5refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M	Mass (M⊙)		Pulsation
Eff. temperature (K)	3900refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M 3810refAkras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A	Radius (R⊙)	126refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M	Type
IR type	S🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A, refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M	Luminosity (L⊙)	3311refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M	Pulsation period (days)
Metallicity [Fe/H]	-1refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M			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)	114000refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M	Luminosity (L⊙)	225-3165refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M
Upper limit (K)	170000refMiszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M

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Links

SIMBAD     CDS Portal     VSX

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Notes

An optical spectrum of LIN 9 taken at quiescence reveals a K5 red giant with emission lines confirming its symbiotic star nature. It is the first Magellanic symbiotic star proven to show Z And outbursts. At outburst, the estimated hot component luminosity is 3165 L_⊙, compared to 225 L_⊙ at quiescence (Miszalski et al., 2014).

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References

• Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A
• Miszalski, B., Mikołajewska, J., Udalski, A., 2014, MNRAS, 444, L11, 2014MNRAS.444L..11M 

Last updated: May 2, 2019 @ 11:01 am