2001A&A...376..224D

Query : 2001A&A...376..224D

2001A&A...376..224D - Astronomy and Astrophysics, volume 376, 224-231 (2001/9-2)

Cyclicities in the light variations of S Doradus stars. III. P Cygni.

DE GROOT M., STERKEN C. and VAN GENDEREN A.M.

Abstract (from CDS):

On the basis of new photometric observations and archived data published since 1907, we discuss the light variations of P Cygni. We conclude that there are α Cygni-type microvariations with a stable (pulsation) quasi-period of 17.3 days. There are also longer cycles of variation with P∼ 100d, so-called 100d-type micro-variations, and with P∼1500-1600d, a short S Dor-type phase.

Abstract Copyright: ∼

Journal keyword(s): stars: individual: P Cygni - stars: variables - stars: oscillations - stars: supergiants

Simbad objects: 10

Full paper

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Number of rows : 10

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	HD 6884	s*b	01 07 18.2182685856	-72 28 03.657105156		10.32	10.2			B9Ia0ek	122	0
2	HD 269006	s*b	05 02 07.3942092168	-71 20 13.116800076	9.93	10.60	10.55	10.43	10.38	LBV	250	0
3	HD 269321	s*b	05 17 56.0734487568	-69 16 03.809703252	10.28	10.93	10.84	10.53	10.342	B5Iae	65	0
4	V* BP Cru	HXB	12 26 37.5605188992	-62 46 13.261044684		12.70	10.66			B1.5Iaeq	670	0
5	* zet01 Sco	s*b	16 53 59.7271314888	-42 21 43.307334468	4.80	5.31	4.79	4.32	3.86	B1Ia-0ek	368	0
6	* 22 Cyg	SB*	19 55 51.7609131816	+38 29 12.188844204	4.34	4.846	4.946			B5IV	96	0
7	* b03 Cyg	dS*	20 14 32.0323540824	+36 48 22.700909124	5.10	5.11	4.99	4.79	4.72	A2V	256	0
8	* omi02 Cyg	EB*	20 15 28.3242122880	+47 42 51.213932496	6.54	5.50	3.98	2.78	1.86	K7Ib-II+B1V	333	0
9	* P Cyg	s*b	20 17 47.2020844	+38 01 58.552724	4.66	5.24	4.82	4.28	4.02	B1-2Ia-0ep	1170	1
10	* alf Cyg	sg*	20 41 25.91514	+45 16 49.2197	1.11	1.34	1.25	1.14	1.04	A2Ia	746	0

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