2012A&A...542A..89P

Query : 2012A&A...542A..89P

2012A&A...542A..89P - Astronomy and Astrophysics, volume 542A89-89 (2012/6-1)

The Hvar survey for roAp stars. I. The survey observations.

PAUNZEN E., NETOPIL M., RODE-PAUNZEN M., HANDLER G., BOZIC H., RUZDJAK D. and SUDAR D.

Abstract (from CDS):

The rapidly oscillating Ap (roAp) stars exhibit short time scale photometric and/or radial velocity variations, which are most important to test current pulsation models as well as our assumptions of the atmospheric structure characteristics. In addition, their chemical peculiarity makes them very interesting for probing stellar formation and evolution in the presence of a global magnetic field. To date, only a limited number of about 45 roAp stars are known. In order to increase the sample, we obtained photometric time series of 20 good roAp candidates to search for pulsations. We present the time series analysis of about 60 h of CCD photometry taken at the 1m Austrian-Croatian Telescope (Hvar Observatory) and derive effective temperatures for the programme objects. The upper amplitude limits of the Fourier spectra are typically below 2mmag in Bessell B with one good candidate for follow-up observations to find possible pulsation. In addition, we present a list of further roAp candidates, worth to be (re)investigated.

Abstract Copyright: ∼

Journal keyword(s): stars: chemically peculiar - stars: variables: general - stars: early-type - stars: oscillations

VizieR on-line data: <Available at CDS (J/A+A/542/A89): stars.dat phot/*>

Simbad objects: 36

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Number of rows : 36
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 HD 7410 * 01 14 40.4129513880 +33 00 04.798103940   9.35 9.07     ~ 11 0
2 V* CP Oct dS* 03 09 53.7500021592 -83 31 53.581689012   8.01 7.61     F2/3Ib/II 66 0
3 V* V1054 Ori a2* 05 48 25.5041382456 -00 45 34.610849136   7.69       ApSrEuCr 71 0
4 HD 51684 ** 06 56 29.8894824432 -40 59 25.049785740   8.25 7.94     ApSrEuCr 48 0
5 * 49 Cam a2* 07 46 27.4146675768 +62 49 49.882910592   6.750 6.458     A7VpSrCrEuSiKsn 146 0
6 HD 94427 * 10 53 56.7156975264 -12 26 04.372674396   7.73 7.36     ApSrEuCr 39 0
7 V* EP UMa a2* 11 09 39.7864853928 +67 12 36.756332280   6.278 6.061     A7IVpSr 88 0
8 HD 105999 * 12 11 59.8457625624 -63 22 50.872143864   7.80 7.43     ApSrCr(Eu) 42 0
9 HD 112528 a2* 12 57 35.3157391344 -19 45 01.674889956   8.58 8.25     ApSrEu(Cr) 40 0
10 HD 115606 * 13 18 02.4609064584 +13 00 00.462136140 8.970 8.860 8.550     kA2hA7mF0(IV)EuSr 39 0
11 V* HH Com a2* 13 18 37.2495284424 +26 21 56.748367008   8.08 7.83     A2p 118 0
12 HD 116114 PM* 13 21 46.3079033856 -18 44 31.563482928   7.34 7.02     F0VpSrCrEu 145 0
13 HD 160468 * 17 45 44.2524674472 -68 38 51.422926740   7.73 7.32     ApSrCr 34 0
14 BD+28 2829 Pe* 17 46 42.2981060928 +27 58 59.100004848   9.35 8.99     F1VSr 24 0
15 HD 165474 * 18 05 42.8401334904 +12 00 12.191017896   7.69 7.40     A6VpSrCrEuSi 105 0
16 BD+31 3215 * 18 14 30.1938044184 +31 58 38.981513316   9.81 9.58     ~ 9 0
17 HD 168481 SB* 18 19 16.3147326168 +15 49 33.738048660   7.24 6.97     ~ 26 0
18 BD+29 3427 * 18 59 18.4036757232 +29 48 14.893543836   9.90 9.66     F0p 12 0
19 BD+29 3448 Pu* 19 01 49.4294378472 +30 01 34.585552956   9.82 9.54     F0pSr 15 0
20 TYC 3545-2756-1 a2* 19 05 26.5923938832 +47 15 48.314948904   10.86 10.66 10.56   F0V 35 0
21 HD 225578 a2* 19 44 16.5163940160 +35 19 13.456316568   9.373 9.075     ASr: 14 0
22 HD 227301 * 20 02 32.0760632064 +39 41 03.289705836   10.33 10.14     ~ 10 0
23 V* V4133 Sgr a2* 20 03 35.2202818152 -38 51 09.131827212   7.16 6.90     ApSrCrEu 56 0
24 HD 228403 * 20 13 34.3850302608 +36 40 29.348822892   9.47 9.136     A7III 13 0
25 HD 347287 * 20 43 25.9092886752 +22 04 51.583073124   10.14 9.95     A2 15 0
26 BD+33 4115 * 20 59 44.2758897432 +33 40 01.687506960   10.81 10.63     ~ 2 0
27 BD+37 4152 Pe* 21 02 17.0421624168 +37 52 56.529997572   10.57 10.30     ~ 6 0
28 TYC 2713-2426-1 PM* 21 06 49.5257787456 +36 43 14.607399936   12.34 11.42     ~ 5 0
29 BD+35 4422 * 21 10 25.9511353752 +36 20 26.735912736   9.67 9.40     ~ 7 0
30 BD+41 4078 * 21 17 42.9586274352 +41 56 15.673647408   9.62 9.36     ~ 5 0
31 BD+46 3543 * 22 02 12.7264523232 +47 05 25.255324860   9.97 9.75     ~ 8 0
32 BD+54 2730 * 22 17 45.9688034136 +55 38 01.154673744   10.72 10.46     ~ 11 0
33 TYC 3982-4172-1 * 22 18 09.1055371968 +53 08 00.187514268   11.11 10.73     ~ 6 0
34 BD+57 2636 SB* 22 53 56.5847080752 +58 15 44.242099488   9.96 9.55     Ap 9 0
35 BD+50 4176 SB* 23 52 44.3719644240 +51 09 56.529625644   9.69 9.44     ~ 6 0
36 BD+61 2565 Pe* 23 54 55.6814554224 +62 04 22.262228940   10.27 9.9     ApSrCrEu 11 0

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