WDS 07187-2457 HJ 3948 AB (Tau CMa)

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07187-2457
HJ 3948 AB
Tau CMa

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

WDS 07187-2457 HJ 3948 AB (Tau CMa) : NOTES

discov_num	notes	refcode
FIN 313	A: 30 CMa = tau CMa. A is Beta Lyrae-type system, probably variable.
	See discussion of the system by Sana et al. 2014).	Sna2014
HJ 3948	van Leewen & van Genderen (1997 A&A 327, 1070) and Stickland et al.	Stc1999
	(1999) argue that the brighter Aa component of the visual Aa,Ab binary
	is a triple system consisting of a close 1.28-day eclipsing system
	orbiting a distant O star (the spectroscopic binary with a period of
	154.9 d). The visual Aa,Ab pair has slowly decreased in separation
	from 0".19 to 0".15 between 1977 and 1994.	Msn1998a
	Classification of the D component is from Hoffleit & Warren (1991).	Hof1991
	1996.155: Date from J. Christou (private communication).

REFERENCES

refcode	metd	author	reference
Hof1991	-	Hoffleit, D. & Jaschek, C.	1991bsc..book.....H
Hof1991		The Bright Star Catalogue, Fifth Revised Edition (preliminary version), 1991
Msn1998a	Sc j	Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G.,	1998AJ....115..821M
Msn1998a		ten Brummelaar, T.A., & McAlister, H.A.
Msn1998a		AJ 115, 821, 1998
Sna2014	Kv j	Sana, H., LeBouquin, J.-B., Lacour, S., Berger, J.-P., Duvert, G., Gauchet, L.,	2014ApJS..215...15S
Sna2014	+A	Norris, B., Olofsson, J., Pickel, D., Zins, G., Absil, O., de Koter, A.,
Sna2014		Kratter, K., Schnurr, O., & Zinnecker, H.
Sna2014		ApJS 215, 15, 2014
Sna2014		(NACO companions in Table 6 assumed physical if quoted probability of spurious
Sna2014		detection <10%, optical if >90%, otherwise indeterminate)
Stc1999	not -	Stickland, D.J., Lloyd, C., & Sweet, I.	1999Obs...118....7S
Stc1999		Observatory 118, 7, 1999

DISCOVERER

idgroup	discov	author
1	FIN	Finsen, W.S.
171	HJ	Herschel, J.F.W.
220	TOK	Tokovinin, A.A.
267	TOK	Tokovinin, A.A., Balega, Y.Y., Pluzhnik, E.A., Shatsky, N.I., Gorynya, N.A., &
267	TOK	Weigelt, G.
281	TOK	Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
281	TOK	Martinez, M., & Mondaca, E.
349	TOK	Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
349	TOK	Ratzloff, J. & Walter, F.M.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
07187-2457	HJ 3948	AB	2002	13	93	8.6	4.42	10.20	O9II	N D	071842.49-245715.8
07187-2457	HJ 3948	AB	2015	14	90	8.3	4.42	10.20	O9II	N	071842.49-245715.8

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