LMC1

CONFIRMED LMC   Equatorial coordinates α =  81.254625 ± 0.041449 | 05 25 01.106406 δ =  -62.480216 ± 0.045194 |-62 28 48.779618   Constellation Dorado 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 C4.3 Magnitude range (V)   Outbursts No

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Identifiers

LMC1	GSC –	TYC –	WRAY –
SIMBAD NAME LMC Symbiotic Star 1	HIP –	SAO –	Hen –
BD –	IRAS –	GAIA DR2 4757458655865241984	ESO –
HD –	2MASS J05250111-6228488	WISE J052501.11-622848.7	AAVSO 000-BLT-633

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Position

Right ascension (°)	81.254625 ± 0.041449refGaia 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)	0.049 ± 0.002refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	-62.480216 ± 0.045194refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Distance (kpc)	49.97 ± 0.19refPietrzyński, G., Graczyk, D., Gieren, W., et al., 2013, Nature, 495, 76, 2013Natur.495…76P
Galactic longitude (°)	271.816454 ± 0.045194refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in α (mas/yr)	1.630595 ± 0.089853refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G
Galactic latitude (°)	-33.766091 ± 0.041449refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in δ (mas/yr)	0.194366 ± 0.087179refGaia 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)	17.32refO’Donoghue, D., Kilkenny, D., Koen, C., et al., 2013, MNRAS, 431, 240, 2013MNRAS.431..240O	X-Ray		Flickering
B (mag)	18.22refO’Donoghue, D., Kilkenny, D., Koen, C., et al., 2013, MNRAS, 431, 240, 2013MNRAS.431..240O	X-Ray type		Outbursts	No
V (mag)	17.36refO’Donoghue, D., Kilkenny, D., Koen, C., et al., 2013, MNRAS, 431, 240, 2013MNRAS.431..240O	IUE	Yes	Type
R (mag)	14.90refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	IRAS flux at 12 μm (Jy)		IPmax (eV)	114refAngeloni, R., Gonçalves, D. R., Akras, S., et al., 2019, AJ, 157, 156, 2019AJ….157..156A
I (mag)	14.10refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	IRAS flux at 25 μm (Jy)		OVI lines	YesrefAngeloni, R., Gonçalves, D. R., Akras, S., et al., 2019, AJ, 157, 156, 2019AJ….157..156A
G (mag)	15.88refGaia 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)	13.55refCutri, 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)	12.01refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W1 (mag)	8.82refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
K (mag)	10.71refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2003, VizieR On-line Data Catalog: II/246, 2003yCat.2246….0C	WISE W2 (mag)	8.24refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
L (mag)	8.54refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	WISE W3 (mag)	7.50refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		WISE W4 (mag)	7.37refCutri, R. M., et al., 2014, I II/328, 2014yCat.2328….0C
		Radio
		Radio flux (mJy)

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Orbit

Orbital period (days)	>1500?refAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A	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	C4.3refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	Mass (M⊙)		Pulsation	YesrefAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
Eff. temperature (K)	3100refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	Radius (R⊙)	360refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	Type	SR pulsationsrefAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
IR type	D🡕 Source: Akras, S., Guzman-Ramirez, L., Leal-Ferreira, M. L., et al., 2019, ApJS, 240, 21, 2019ApJS..240…21A, refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	Luminosity (L⊙)	11000refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	Pulsation period (days)	171 ± 3refAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
Metallicity [Fe/H]				Ephemeris type	Min(I)refAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
				Ephemeris T0 (JD)	2455962  ± 1refAngeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A

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Hot component

Type/Spectra		Mass (M⊙)		Spin period (min)
Eff. temperature (K)	150000refMorgan, D. H., 1992, MNRAS, 258, 639, 1992MNRAS.258..639M 125000refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	Radius (R⊙)	0.12refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M	Accretion disk
Lower limit (K)		Luminosity (L⊙)	1300refMorgan, D. H., 1992, MNRAS, 258, 639, 1992MNRAS.258..639M 3000refMuerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M
Upper limit (K)

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Links

SIMBAD     CDS Portal     VSX

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Notes

The system shows carbon star spectrum and a great number of emission lines. The orbital period should be >1500d (Angeloni et al., 2014).

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References

• Angeloni, R., Ferreira Lopes, C. E., Masetti, N., et al., 2014, MNRAS, 438, 35, 2014MNRAS.438…35A
• Angeloni, R., Gonçalves, D. R., Akras, S., et al., 2019, AJ, 157, 156, 2019AJ….157..156A
• Morgan, D. H., 1992, MNRAS, 258, 639, 1992MNRAS.258..639M
• Muerset, U., Schild, H., Vogel, M., 1996, A&A, 307, 516, 1996A&A…307..516M

Last updated: May 2, 2019 @ 11:06 am