2003A&A...404..621J

Query : 2003A&A...404..621J

2003A&A...404..621J - Astronomy and Astrophysics, volume 404, 621-629 (2003/6-3)

Multiband photometric re-classification of ROTSE-I δ Scuti type stars.

JIN H., KIM S.-L., KWON S.-G., YOUN J.-H., LEE C.-U., LEE D.-J. and KIM K.-S.

Abstract (from CDS):

We present multi-passband CCD photometry of 20 ROTSE-I δ Scuti type pulsating stars and 1 RR Lyrae star to re-classify their variable types using the comparison of amplitudes between V and I passbands. For the re-classification, we used a criterion that pulsating stars have larger amplitude differences between passbands than eclipsing binaries because brightness changes of pulsating stars are mainly due to the temperature variations. As a result, only six stars were re-confirmed as δ Scuti variables and thirteen stars turned out to be W UMa type eclipsing binaries. The other two stars were identified as one cataclysmic variable and one non-variable, respectively. Our results suggest that a number of ROTSE-I δ Scuti type stars, which do not show typical pulsating light curves of high amplitude δ Scuti stars, are W UMa type eclipsing binaries.

Abstract Copyright: ∼

Journal keyword(s): stars: variables: δ Sct - stars: binaries: eclipsing - techniques: photometric

VizieR on-line data: <Available at CDS (J/A+A/404/621): list.dat table3a.dat ... table3u.dat>

Simbad objects: 21

Full paper

View the references in ADS

Number of rows : 21

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2024	#notes
1	V* DU CVn	EB*	12 51 39.9888476546	+37 15 46.665002097						~	9	0
2	V* EH CVn	EB*	13 41 13.7351363064	+31 47 25.394243568			13.00			~	21	1
3	V* GX Boo	EB?	14 01 05.5601817744	+24 42 16.557941232		12.12	12.27			~	11	1
4	V* YZ Boo	dS*	15 24 06.9993392928	+36 52 00.601700700	10.62	10.54	10.36			F0	125	1
5	V* AW CrB	EB*	16 15 20.1890018640	+35 42 26.264696256		11.46	11.12	10.771	10.485	~	18	1
6	V* DY Her	dS*	16 31 17.9532980880	+11 59 52.455542712		10.80	10.50			A9.7:III	133	0
7	V* V1086 Her	dS*	16 48 39.2477129400	+30 27 45.500755068			12.96			~	7	0
8	V* V1091 Her	EB*	17 07 24.4756889232	+36 15 25.727726988		12.40	11.83			~	13	0
9	V* V1092 Her	EB*	17 16 39.9113286336	+29 34 04.517181336			12.74			~	8	0
10	V* V1098 Her	EB*	17 39 37.2296297712	+50 12 02.658875832		12.80	12.62			~	12	1
11	V* V1105 Her	EB*	18 11 23.5225183200	+30 36 39.049817004				12.71		~	6	0
12	V* V1106 Her	EB*	18 13 24.4145020368	+25 50 11.593898160				12.47		~	7	0
13	V* AM Her	CV*	18 16 13.2546541781	+49 52 04.759861155		15.124	14.808	13.525		M4.5-5Ve	958	0
14	V* V575 Lyr	dS*	18 29 43.2444779808	+28 09 54.602457696						~	13	0
15	V* V593 Lyr	dS*	18 32 06.4351053480	+40 35 56.516774316		12.39	11.66			~	14	0
16	V* V594 Lyr	EB*	18 45 21.7516622232	+45 53 28.884047964		14.64	14.01	13.84		~	10	0
17	ROTSE1 J191516.94+475914.5	dS*	19 15 16.9752110760	+47 58 51.054921840			12.813	12.52	9.813	~	7	0
18	V* V2363 Cyg	EB*	19 21 08.3733082344	+51 02 00.933989496		12.81	12.01		11.183	G8V	28	1
19	V* V2366 Cyg	EB*	19 32 10.8613131816	+45 44 08.924274636			12.979		12.400	~	26	0
20	V* V2367 Cyg	dS*	19 34 45.5906528736	+45 54 16.308041580		11.54	11.48		10.960	F0IVs+?	34	0
21	V* V2409 Cyg	EB*	19 45 06.3605553072	+53 23 36.298338144		14.24	13.67	13.62		~	7	0

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