1999A&A...350..797A

Query : 1999A&A...350..797A

1999A&A...350..797A - Astronomy and Astrophysics, volume 350797-804 (1999/10-3)

Variable stars in nearby galaxies. II. Population I and II Cepheids in Field A of IC 1613.

ANTONELLO E., MANTEGAZZA L., FUGAZZA D. and BOSSI M.

Abstract (from CDS):

The light curves of Cepheids and other variable stars in Field A of IC 1613, obtained with a CCD and no filter (Wh photometry), have been analyzed. It is possible to separate first overtone from fundamental mode population I Cepheids taking into account the pulsation amplitude, the shape of the light curve and the period. The expected separation is verified in the period-luminosity PL diagram. Light curve Fourier parameters have been compared with those of Magellanic Clouds and galactic Cepheids, in order to point out the effects of the very low metallicity of IC 1613 on the light curve shape. Population II Cepheids of IC 1613 can be discriminated from those of population I in the PL diagram, and, taking into account their color, from other red or blue variables. Their PL relation is consistent with that observed in globular clusters, nearby dwarf spheroidal galaxies and LMC. We have shown it is possible to apply the single-phase method for deriving standard photometry PL relations for population I and II Cepheids; therefore with just one accurate BVRI observation it is possible to use the population I Cepheids for distance determinations. Some unusual stars have been identified on the basis of periods, light curve shapes and colors; they appear to be pulsating stars laying on the extension of PL relation of known anomalous Cepheids. A firmer classification of these and other faint stars requires further deeper multicolor observations.

Abstract Copyright: ∼

Journal keyword(s): stars: oscillations - stars: variables: Cepheids - stars: variables: general - galaxies: individual: IC 1613 - galaxies: Local Group - galaxies: stellar content

Simbad objects: 53

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Number of rows : 53
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
4 [AMF99] V0414 Ce* 01 04 51.2 +02 10 04           ~ 2 0
5 [AFF2006] 4175-2 Ce* 01 04 51.6067662506 +02 10 10.859112200   21.12 20.685 20.35 20.17 ~ 9 0
6 [SHM2017] J016.21524+02.18203 Ce* 01 04 51.6658985808 +02 10 55.414018884   20.97 20.502 20.24 19.96 ~ 10 0
7 [AFM2000] V0524-A Ce* 01 04 51.8 +02 10 41           ~ 3 0
8 [AFM2000] V1296-A Ce* 01 04 52.0 +02 10 07           ~ 3 0
9 [AMF99] V2150 Ce* 01 04 53.1 +02 09 53           ~ 2 0
10 [UWP2001] 15356 Ce* 01 04 53.34 +02 10 21.9   22.77 22.107     ~ 5 0
11 [AMF99] V2309 Ce* 01 04 53.4 +02 11 00           ~ 2 0
12 [AMF99] V1767 Ce* 01 04 54.6 +02 10 26           ~ 2 0
13 [AMF99] V0377 Ce* 01 04 55.0 +02 10 01           ~ 2 0
14 [AMF99] V2766 Ce* 01 04 56.1 +02 08 14           ~ 2 0
15 [AMF99] V0655 Ce* 01 04 56.1 +02 11 27           ~ 2 0
16 [AFF2006] 3171-2 Ce* 01 04 56.35 +02 08 21.3   21.60 20.991 20.56 20.37 ~ 9 0
17 [AMF99] V1178 Ce* 01 04 56.7 +02 11 54           ~ 2 0
18 [AFM2000] V0178-A Ce* 01 04 56.8 +02 08 58           ~ 3 0
19 [AFM2000] V0107-A Ce* 01 04 57.0 +02 08 37           ~ 3 0
20 [AMF99] V2172 Ce* 01 04 57.9 +02 10 36           ~ 2 0
21 [AMF99] V0130 WV* 01 04 58.2 +02 08 47           ~ 2 0
22 [AMF99] V1935 V* 01 04 58.5 +02 09 03           ~ 2 0
23 [AFM2000] V0236-A Ce* 01 04 58.9 +02 09 23   23.32 22.16 21.39 20.73 ~ 4 0
24 [AMF99] V0971 V* 01 04 59.3 +02 09 55           ~ 2 0
25 [AFM2000] V1289-A Ce* 01 04 59.7 +02 10 05   21.92 21.76     ~ 4 0
26 [AFF2006] 3384-2 Ce* 01 04 59.84 +02 08 42.8   21.62 20.90 20.48 20.19 ~ 8 0
27 [AFF2006] 6157-2 Ce* 01 04 59.96 +02 08 24.7   21.28 21.046 20.72 20.45 ~ 8 0
28 [F88b] 1-199 Ce* 01 05 00.3 +02 08 57   22.69 22.80 22.81   ~ 3 0
29 [AMF99] V1598 V* 01 05 00.4 +02 09 10           ~ 2 0
30 [AMF99] V0078 Ce* 01 05 00.62 +02 08 36.5   21.23 20.74 20.43 20.09 ~ 3 0
31 [AMF99] V1798 Ce* 01 05 00.7 +02 10 51           ~ 2 0
32 [AMF99] V2396 Ce* 01 05 00.8 +02 10 44   19.10 17.75 17.14 16.62 ~ 12 0
33 [F88b] 1-277 Ce* 01 05 00.8 +02 11 03   23.06 22.75 22.31   ~ 3 0
34 [F88b] 1-284 Ce* 01 05 01.0 +02 11 10   24.57 21.97 20.71 19.41 ~ 3 0
35 [AFF2006] 8284-2 Ce* 01 05 01.15 +02 09 11.5   22.27 21.655 21.41 20.89 ~ 6 0
36 [AMF99] V1371 Ce* 01 05 01.2 +02 11 35           ~ 2 0
37 [AMF99] V1241 Ce* 01 05 01.4 +02 09 12           ~ 2 0
38 [F88b] 1-380 Ce* 01 05 01.6 +02 10 02   22.48 22.02 21.86   ~ 3 0
39 [AMF99] V2262 Ce* 01 05 01.9 +02 09 34           ~ 2 0
40 [AMF99] V0479 Ce* 01 05 02.1 +02 10 33           ~ 2 0
41 [F88b] 1-443 WV* 01 05 02.2 +02 09 07   21.99 22.34     ~ 3 0
42 [AFF2006] 3839-2 Ce* 01 05 02.44 +02 09 30.1   22.15 21.439 21.08 20.82 ~ 7 0
43 [F88b] 1-500 Ce* 01 05 02.7 +02 08 52   23.96 22.71 22.39 21.38 ~ 3 0
44 [MWF2015] 1206 Ce* 01 05 02.8067958624 +02 10 35.399212716   20.62 19.988 19.53 19.11 ~ 10 0
45 [F88b] 1-580 Ce* 01 05 03.4 +02 10 47   22.01 22.13     ~ 3 0
46 [AFF2006] 4313-2 Ce* 01 05 03.7 +02 10 22     21.97 21.63 21.40 ~ 3 0
47 [AMF99] V2100 Ce* 01 05 04.5 +02 08 58           ~ 2 0
48 [AFM2000] V2221-A Ce* 01 05 04.7 +02 08 47           ~ 3 0
49 [F88b] 1-711 Ce* 01 05 04.9 +02 09 45   22.71 22.32 22.13 22.11 ~ 3 0
50 [F88b] 1-723 Ce* 01 05 05.0 +02 10 54   23.28 22.78 22.31   ~ 3 0
51 [AFF2006] 4613-2 Ce* 01 05 05.34 +02 11 06.9   21.93 21.698 21.34 21.14 ~ 6 0
52 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
53 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0

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