2001MNRAS.326..553S


C.D.S. - SIMBAD4 rel 1.7 - 2020.03.31CEST16:50:46

2001MNRAS.326..553S - Mon. Not. R. Astron. Soc., 326, 553-577 (2001/September-2)

A search for rapid photometric variability in symbiotic binaries.

SOKOLOSKI J.L., BILDSTEN L. and HO W.C.G.

Abstract (from CDS):

We report on our survey for rapid (time-scale of minutes) photometric variability in symbiotic binaries. These binaries are becoming an increasingly important place to study accretion on to white dwarfs, since they are candidate Type Ia supernova progenitors. Unlike in most cataclysmic variables, the white dwarfs in symbiotics typically accrete from a wind, at rates greater than or equal to 10–9Myr–1. In order to elucidate the differences between symbiotics and other white dwarf accretors, as well as to search for magnetism in symbiotic white dwarfs, we have studied 35 symbiotic binaries via differential optical photometry. Included in our sample are all but one of the symbiotics from the lists of Kenyon and Downes & Keyes with published V magnitudes less than 14 and declinations greater than -20°. Our study is the most comprehensive to date of rapid variability in symbiotic binaries. We have found one magnetic accretor, Z And, previously reported by Sokoloski & Bildsten. In four systems (EG And, BX Mon, CM Aql and BF Cyg), some evidence for flickering at a low level (roughly 10mmag) is seen for the first time. These detections are, however, marginal. For 25 systems, we place tight upper limits on both aperiodic variability (flickering) and periodic variability, highlighting a major difference between symbiotics and cataclysmic variables. The remaining five of the objects included in our sample (the two recurrent novae RS Oph and T CrB, plus CH Cyg, o Ceti and MWC 560) had previous detections of optical flickering. We discuss our extensive observations of these previously known flickering systems in a separate paper. Five new variable stars were discovered serendipitously in the fields of the survey objects, and the observations of these stars are also presented elsewhere. We discuss the impact of our results on the `standard' picture of wind-fed accretion, and speculate on the possibility that light from quasi-steady nuclear burning on the surface of the white dwarf hides the fluctuating emission from accretion.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - methods: data analysis - surveys - binaries: symbiotic - stars: magnetic fields - stars: oscillations

Status at CDS:  

Simbad objects: 42

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Number of rows : 42

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* QR And Al* 00 19 49.9252841335 +21 56 52.166609264   12.38 12.73 11.86   Ss 124 0
2 2E 0035.4-7229 XB* 00 37 19.0 -72 14 14   20.0 20.2     ~ 96 0
3 V* EG And Sy* 00 44 37.1876042586 +40 40 45.703033630 10.54 8.93 7.22     M2.4III 263 0
4 V* AX Per Sy* 01 36 22.6996835649 +54 15 02.411289057   11.45 10.67 11.04   M3IIIep+A0 274 1
5 V* V471 Per Al* 01 58 49.6642388419 +52 53 48.460982843   14.06 13.08     G2Ib 168 1
6 * omi Cet Mi* 02 19 20.79210 -02 58 39.4956   7.63 6.53 5.03   M5-9IIIe+DA 1428 0
7 EM* StHA 32 Sy* 04 37 45.6311522513 -01 19 11.896504207     13.5     C1,1e_CH5 29 0
8 SV* HV 5682 XB* 05 13 50.809 -69 51 47.30     16.566 16.606 16.62 ~ 304 0
9 V* UV Aur C* 05 21 48.9137852435 +32 30 40.177257425   12.46 10.41 9.15   C8,1Je 197 0
10 HD 34842 ** 05 21 48.92 +32 30 39.8           C8,1Je+B9V 197 0
11 2E 1550 XB* 05 43 34.1600994175 -68 22 22.189299745   15.9   17.2 16.54 ~ 305 0
12 V* BX Mon Sy* 07 25 22.7618908461 -03 35 50.641920234   12.27 11.24 10.92   M5/6IIIe 106 1
13 EM* MWC 560 Sy* 07 25 51.2841922233 -07 44 08.078237799   10.01 9.70 10.60   M4ep+Beq 180 0
14 RX J0925.7-4758 XB* 09 25 46.0017213799 -47 58 17.339989324   19.2       ~ 85 0
15 V* TX CVn Sy* 12 44 42.0645704232 +36 45 50.622366015   10.96 10.15 9.79   K0III+B8/9_sh 112 1
16 V* RW Hya Sy* 13 34 18.1290422733 -25 22 48.885732567   11.51 10.00     M1/2IIIe 186 0
17 BD-21 3873 Sy* 14 16 34.2916048270 -21 45 50.037192663   12.060 10.684     K2e 70 0
18 V* T CrB Sy* 15 59 30.1619486506 +25 55 12.607985109 2.69 2.10 2.00     M3III+p 643 0
19 V* AG Dra Sy* 16 01 41.0125687664 +66 48 10.131181273 11.50 11.06 9.74 8.52   K3IIIep 474 0
20 V* V934 Her LP* 17 06 34.5143100938 +23 58 18.652285813 11.20 9.16 7.62     M2III 116 0
21 Hen 3-1341 Sy* 17 08 36.5712745890 -17 26 30.407858350           M3.5 56 0
22 V* RS Oph No* 17 50 13.1592776879 -06 42 28.481553668   12.29 4.30     OB+M2ep 918 0
23 EM* AS 289 Sy* 18 12 22.1424632235 -11 40 07.117086481   10.5 12.40     M3 47 0
24 EM* AS 297 Sy* 18 14 34.1920433871 +20 59 21.188200993     11.10     M2pev 135 0
25 V* FG Ser Sy* 18 15 07.1024604258 -00 18 52.284453619           M3e 105 0
26 EM* StHA 149 LP* 18 18 55.8709278041 +27 26 27.727677236   13.74 11.98 11.44   M2 11 0
27 EM* MWC 603 Sy* 18 22 07.8547728418 +23 27 19.933241936   12.34 11.52     M3ep+O 111 0
28 V* V1017 Sgr No* 18 32 04.4737964965 -29 23 12.593546512           G5IIIp 123 0
29 V* FN Sgr Sy* 18 53 54.7732843778 -18 59 40.660080929           M5IIIe 50 0
30 V* CM Aql Sy* 19 03 35.1415731789 -03 03 15.362466392   16.50 14.63 13.32   ~ 32 0
31 EM* AS 337 Sy* 19 03 45.1171336102 -16 59 55.379967647   12.99 12.34 12.53   M3IIIe 36 0
32 V* BF Cyg Sy* 19 23 53.5009795759 +29 40 29.173306238   10.52 9.30     Bep+M5III 264 0
33 V* CH Cyg Sy* 19 24 33.0697620341 +50 14 29.057625755 8.14 8.77 7.08   5.345 M7IIIab+Be 736 0
34 EM* AS 360 Sy* 19 45 49.5494362255 +18 36 47.661305482     12.50     M4IIIe 48 0
35 V* CI Cyg Al* 19 50 11.8344401438 +35 41 03.000692799   11.97 9.90     Bep+M5III 403 0
36 V* PU Vul No* 20 21 13.3112218215 +21 34 18.693825946   11.13 10.87     A4II-F8Iab+M6IIIe 291 0
37 V* LT Del Sy* 20 35 57.2353984617 +20 11 27.504214453           G6III 95 1
38 EM* StHA 180 Em* 20 39 20.6054204154 -05 17 16.332022183     13.5     ~ 8 0
39 EM* StHA 190 Sy* 21 41 44.8880611733 +02 43 54.409367196   11.13 10.22     G5e 41 0
40 V* AG Peg Sy* 21 51 01.9733955799 +12 37 32.124041390   6.76 6.00     M3IIIe 490 0
41 V* Z And Sy* 23 33 39.9551345052 +48 49 05.973842875 8.86 9.35 8.00     M2III+B1eq 499 0
42 V* R Aqr Sy* 23 43 49.4629939776 -15 17 04.184232557   8.823 7.683 9.37   M6.5-8.5e 735 0

    Equat.    Gal    SGal    Ecl

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2020.03.31-16:50:46

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