2004A&A...428..925V


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.22CEST00:36:58

2004A&A...428..925V - Astronomy and Astrophysics, volume 428, 925-934 (2004/12-4)

A photometric pilot study on Sonneberg archival patrol plates. How many ``constant'' stars are in fact long-term variables?

VOGT N., KROLL P. and SPLITTGERBER E.

Abstract (from CDS):

The light curves of 216 arbitrarly chosen field stars and of 23 known variables in the Aur/Tau/Ori region were derived (7.8mag≤B≤12.2mag ) from scanned, blue-sensitive archival patrol plates, covering a total of 34 years (1961-1995). We achieved a photometric accuracy of 0.07 ... 0.12mag in spite of rather unfavourable locations of most stars near the plate borders. 17 field stars turned out to be variables, most of them with time scales of 1000-8000-days in the form of slow waves with amplitudes between 0.1 and 0.3mag, i.e. below the threshold of traditional variable searches on photographic plates. About 50% of these new long-term variables exhibit drifts indicating periodic or erratic variability at much longer time scales than covered here. For the 23 known variables we achieved improvements in their periods and amplitudes and detected long-term variations (drifts, waves) in about 50% of them. The above fraction of low-amplitude long-term variables among field stars implies that a total of about 45000 new variables should be detectable in the Sonneberg patrol plate archive. They will represent a new, hitherto not investigated population of variable stars with a possibly significant impact on our understanding of the stellar interior and evolution.

Abstract Copyright:

Journal keyword(s): stars: variables: general - stars: evolution

Simbad objects: 39

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Number of rows : 39

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* V399 Aur LP* 05 25 40.4116778340 +29 38 15.086341460   11.63 9.74     M2/3? 8 0
2 V* V362 Aur LP* 05 27 10.2178548171 +29 55 15.796759307   9.58 7.32     M1.5Ib 77 0
3 V* CO Ori Or* 05 27 38.3352 +11 25 38.923 12.96 12.33 10.30 10.33 9.63 F7Ve 156 0
4 V* V1809 Ori LP* 05 27 53.8610140125 +11 37 00.892226801   11.07 9.00     M0 6 0
5 HD 243873 V* 05 28 31.4465718286 +31 29 19.574212777   10.24 9.96     A5m 5 0
6 V* GW Ori Or* 05 29 08.3925564419 +11 52 12.653756566   10.83 10.10 9.52   G5/8Ve 300 0
7 HD 244314 Or* 05 30 19.0245506752 +11 20 20.002575675   10.33 10.18     A1V 20 0
8 HD 244524 Ae* 05 31 26.7739304707 +11 01 22.545696018   9.63 9.48     B9e 18 0
9 V* HK Ori Ae* 05 31 28.0451235474 +12 09 10.149849783 11.82 12.06 11.10 11.02 10.56 A2?e+G0?e 176 1
10 HD 36376 Be* 05 31 41.0353133122 +09 13 33.569169311 7.32 7.55 7.51     B8e 19 0
11 V* BK Ori Mi* 05 31 55.7825384074 +07 36 48.938593074   12.46 11.54     M7 24 0
12 BD+32 1020 V* 05 32 08.8934826143 +32 13 15.142654403   11.90 9.83     M2/3? 5 0
13 HD 36510 V* 05 32 32.7538075790 +09 40 10.828456312   8.43 8.42     A0 10 0
14 SV* SON 10954 V* 05 33 58.5753776079 +11 41 46.783710122   12.8       A5 1 0
15 HD 36665 Be* 05 34 39.1005154459 +28 03 03.784083976 7.72 8.37 8.16     B1 57 0
16 V* V1376 Ori LP* 05 35 16.6615953812 +08 42 02.670779401   8.70 7.31     M5 18 0
17 V* OS Ori Al* 05 36 20.7409155737 +08 49 43.940645094   12.34 11.88 11.92   A0 20 0
18 NSV 2444 V* 05 37 36.0062155702 +28 23 22.581925361   12.95 10.72     ~ 1 0
19 V* V2735 Ori Al* 05 38 38.0696125346 +09 01 10.700242451   9.214 9.122     A0 6 0
20 HD 37318 Be* 05 38 58.0165723270 +28 27 36.494831596 8.08 8.66 8.41     B1Vne 48 0
21 HD 37386 Or* 05 39 29.7927119475 +29 50 00.506731858   9.83 8.57     G6IV 27 0
22 HD 37542 V* 05 39 37.5862641527 +08 29 36.114379543   9.17 7.83     K0 2 0
23 HD 37589 V* 05 40 04.6217101198 +11 10 32.153696412   8.98 8.95     A0 6 0
24 HD 246047 V* 05 40 40.1955873409 +32 06 22.986283811   9.10 9.00     B5 8 0
25 V* AB Tau Mi* 05 41 02.4695617222 +28 06 22.956670622   11.86 10.02 9.74   M3 40 0
26 V* U Aur Mi* 05 42 09.0670768405 +32 02 23.585726564   12.00 11.65     M6.5-9:e 112 0
27 HD 246377 V* 05 42 19.1081211247 +31 48 48.224343479   11.27 11.14     F2 2 0
28 V* V356 Aur dS* 05 42 28.0895821934 +28 59 55.505373333   8.62 8.08     F8 34 0
29 V* FP Aur Al* 05 43 38.8175679543 +30 53 31.415289389   12.20 11.95     ~ 17 0
30 V* FU Aur C* 05 48 08.1761304871 +30 37 51.926166655 15.29 10.98 8.31     C-N6: 62 0
31 HD 38708 Be* 05 48 53.6494084500 +29 08 10.015160425 7.66 8.16 8.22     B3/4Vn(e) 46 0
32 HD 247795 Em* 05 49 08.7535844270 +31 50 08.067849274 8.93 9.67 9.62     B0e 16 0
33 SV* SON 10965 V* 05 49 10.3759180073 +31 54 06.227609693   11.08 11.27     A2 1 0
34 SV* SON 10960 V* 05 49 20.0378830255 +30 13 06.438157368   10.91 10.62     A0 1 0
35 V* RZ Aur Al* 05 49 21.9 +31 42 11           A 24 0
36 HD 39137 * 05 51 48.1958348034 +28 26 59.516137026   8.60 8.38     A2 5 0
37 HD 248411 Em* 05 51 54.3513063703 +28 15 42.683469187 8.87 8.93 8.95     B 23 0
38 V* SV Tau Al* 05 52 08.1789855343 +28 06 40.319729441   9.92 9.80     B9 46 0
39 V* FW Aur Al* 05 52 10.3250062399 +30 12 44.314101272           ~ 15 0

    Equat.    Gal    SGal    Ecl

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2020.10.22-00:36:58

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