2005A&A...438L..13Z

Query : 2005A&A...438L..13Z

2005A&A...438L..13Z - Astronomy and Astrophysics, volume 438, L13-16 (2005/8-1)

The cool Galactic R Coronae Borealis variable DY Persei.

ZACS L., CHEN W.P., ALKSNIS O., KINOSHITA D., MUSAEV F.A., BRICE T., SANCHAWALA K., LEE H.T. and CHEN C.W.

Abstract (from CDS):

Result. of first CCD photometry during the recent deep light decline, and high-resolution spectroscopy, are presented for DY Persei. The spectra show variable blueshifted features in the sodium D lines. The Ci lines are strong whereas neutron-capture elements are not enhanced. The isotopic ¹³CN(2,0) lines relative to ¹²CN are of similar strength with those for the carbon star U Hya. All these confirm the RCB nature of DY Per and the existence of ejected clouds. At least two clouds are revealed at -197.3 and -143.0km/s. A star was detected about 0.4" to the west and 2.5" to the north from DY Per. This anonymous companion, with observed colour indices (B-V)=0.68 and (V-R)≃1.1, may be a foreground star.

Abstract Copyright: ∼

Journal keyword(s): stars: carbon - stars: winds, outflows - stars: fundamental parameters - stars: circumstellar matter - stars: individual: DY Per

CDS comments: Anonymous companion to DY Per later dubbed "Taipei star".

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 - 2022	#notes
1	GSC 00012-00257	*	00 54 16.1852475193	+00 39 55.008693685	16.425	15.236	13.818	12.889	11.982	~	10	0
2	UCAC4 454-001168	*	00 54 30.7761427608	+00 40 17.015404476	17.763	16.504	15.355	14.986	14.101	~	11	0
3	GSC 00012-00296	*	00 54 33.5915267352	+00 41 05.399175300	15.264	15.024	14.325	13.926	13.555	~	15	0
4	GSC 00012-00261	*	00 54 37.1568521352	+00 38 57.601691448	14.472	13.992	13.178	12.732	12.338	~	17	0
5	NAME Taipei star	*	02 35 17.12	+56 08 47.0						~	3	1
6	V* DY Per	RC*	02 35 17.1274583280	+56 08 44.717128260		12.88	11.09	9.93	8.64	C-R4+	71	0
7	NAME LMC	G	05 23 34.6	-69 45 22			0.4			~	16168	1
8	V* U Hya	C*	10 37 33.2729535	-13 23 04.352923	13.29	7.51	4.82	3.05	1.78	C-N5	291	0
9	* alf Boo	RG*	14 15 39.67207	+19 10 56.6730	2.46	1.18	-0.05	-1.03	-1.68	K1.5IIIFe-0.5	2232	0
10	V* RY Sgr	RC*	19 16 32.7668605944	-33 31 20.340212592	6.20	6.27	6.25			Cpec	358	0

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