LIN 254

CONFIRMED SMC   Equatorial coordinates α =  13.581472 ± 0.043242 | 00 54 19.550000 δ =  -72.486540 ± 0.033818 | -72 29 11.400000   Constellation Tucana Symbiotic IR Type D’🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A Spectral Type   Magnitude range (V)   Outbursts No

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Identifiers

LIN 254	GSC –	TYC –	WRAY –
SIMBAD LHA 115-S 19	HIP –	SAO –	Hen –
BD –	IRAS 00525-7245	GAIA DR2 4689004367645839488	ESO –
HD –	2MASS J00541954-7229113	WISE J005419.28-722909.5	AAVSO –

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Position

Right ascension (°)	13.581472 ± 0.043242refGaia Collaboration, Brown, A. G. A., Vallenari, A., 2018, A&A, 616, A1, 2018A&A…616A…1G	Parallax (mas)	–	Reddening E(B-V) (mag)	0.273 ± 0.014refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	-72.486540 ± 0.033818refGaia Collaboration, Brown, A. G. A., Vallenari, A., 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 (°)	302.626580 ± 0.033818refGaia Collaboration, Brown, A. G. A., Vallenari, A., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in α (mas/yr)	0.516253 ± 0.074000refGaia Collaboration, Brown, A. G. A., Vallenari, A., 2018, A&A, 616, A1, 2018A&A…616A…1G
Galactic latitude (°)	-44.640040 ± 0.043242refGaia Collaboration, Brown, A. G. A., Vallenari, A., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in δ (mas/yr)	-1.477069 ± 0.066929refGaia Collaboration, Brown, A. G. A., Vallenari, A., 2018, A&A, 616, A1, 2018A&A…616A…1G

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Observations

U (mag)		X-Ray	No?	Flickering
B (mag)	18.57refBoyer, M. L., Srinivasan, S., van Loon, J. T., et al., 2011, AJ, 142, 103, 2011AJ….142..103B	X-Ray type		Outbursts	No
V (mag)	18.27refBoyer, M. L., Srinivasan, S., van Loon, J. T., et al., 2011, AJ, 142, 103, 2011AJ….142..103B	IUE	No	Type
R (mag)		IRAS flux at 12 μm (Jy)	<0.250refHelou, G., Walker, D. W.,1988, Infrared Astronomical Satellite (IRAS) Catalogs and Atlases, 7, 1, 1988iras….7…..H	IPmax (eV)	114.0refOliveira, J. M., van Loon, J. T., Sloan, G. C., et al., 2013, MNRAS, 428, 3001, 2013MNRAS.428.3001O
I (mag)	17.70refBoyer, M. L., Srinivasan, S., van Loon, J. T., et al., 2011, AJ, 142, 103, 2011AJ….142..103B	IRAS flux at 25 μm (Jy)	0.701refHelou, G., Walker, D. W.,1988, Infrared Astronomical Satellite (IRAS) Catalogs and Atlases, 7, 1, 1988iras….7…..H	OVI lines	YesrefOliveira, J. M., van Loon, J. T., Sloan, G. C., et al., 2013, MNRAS, 428, 3001, 2013MNRAS.428.3001O
G (mag)	14.65refGaia Collaboration, Brown, A. G. A., Vallenari, A., 2018, A&A, 616, A1, 2018A&A…616A…1G	IRAS flux at 60 μm (Jy)	<1.38refHelou, G., Walker, D. W.,1988, Infrared Astronomical Satellite (IRAS) Catalogs and Atlases, 7, 1, 1988iras….7…..H
J (mag)	15.08refCutri, 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)	<6.48refHelou, G., Walker, D. W.,1988, Infrared Astronomical Satellite (IRAS) Catalogs and Atlases, 7, 1, 1988iras….7…..H
H (mag)	15.07refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W1 (mag)	12.98refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
K (mag)	14.95refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W2 (mag)	11.57refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
L (mag)		WISE W3 (mag)	6.23refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		WISE W4 (mag)	3.00refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		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		Mass (M⊙)		Pulsation
Eff. temperature (K)	3942refAkras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A	Radius (R⊙)		Type
IR type	D’🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A, refAkras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A	Luminosity (L⊙)		Pulsation period (days)
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)		Luminosity (L⊙)
Upper limit (K)

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Links

SIMBAD     CDS Portal

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Notes

A symbiotic system, based on the presence of Raman emission at 6825 and 7082 Å and nebular emission lines, as well as prominent silicate emission (Oliveira et al., 2013). Akras et al. (2019) classified the systems as a D’ type, based on the modeling of its IR spectra.

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References

• Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A
  Oliveira, J. M., van Loon, J. T., Sloan, G. C., et al., 2013, MNRAS, 428, 3001, 2013MNRAS.428.3001O

Last updated: May 2, 2019 @ 11:03 am