2005A&A...440..701R


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST18:30:29

2005A&A...440..701R - Astronomy and Astrophysics, volume 440, 701-709 (2005/9-3)

HS 0943+1404, a true intermediate polar.

RODRIGUEZ-GIL P., GAENSICKE B.T., HAGEN H.-J., NOGAMI D., TORRES M.A.P., LEHTO H., AUNGWEROJWIT A., LITTLEFAIR S., ARAUJO-BETANCOR S. and ENGELS D.

Abstract (from CDS):

We have identified a new intermediate polar, HS 0943+1404, as part of our ongoing search for cataclysmic variables in the Hamburg Quasar Survey. The orbital and white dwarf spin periods determined from time-resolved photometry and spectroscopy are Porb≃250min and Pspin=69.171±0.001min, respectively. The combination of a large ratio Pspin/Porb≃0.3 and a long orbital period is very unusual compared to the other known intermediate polars. The magnetic moment of the white dwarf is estimated to be µ1∼1034G.cm3, which is in the typical range of polars. Our extensive photometry shows that HS 0943+1404 enters into deep (∼3mag) low states, which are also a characteristic feature of polars. We therefore suggest that the system is a true ``intermediate'' polar that will eventually synchronise, that is, a transitional object between intermediate polars and polars. The optical spectrum of HS 0943+1404 also exhibits a number of unusual emission lines, most noticeably NII λ5680, which is likely to reflect enhanced nitrogen abundances in the envelope of the secondary.

Abstract Copyright:

Journal keyword(s): accretion, accretion disc - stars: binaries: close - stars: novae, cataclysmic variables

Simbad objects: 15

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Number of rows : 15

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* V1062 Tau No* 05 02 27.4781389386 +24 45 23.157011296           ~ 60 0
2 V* TX Col DQ* 05 43 20.17 -41 01 54.3   14.5       ~ 136 0
3 V* MU Cam XB* 06 25 16.2520524762 +73 34 39.104874988       14.3   ~ 60 0
4 V* V482 Cam Al* 07 33 41.4125399360 +67 32 15.629885096           ~ 13 0
5 V* DW Cnc CV* 07 58 53.0399476790 +16 16 45.171023042           ~ 48 0
6 V* GY Cnc DN* 09 09 50.5407240020 +18 49 47.429782142           ~ 62 0
7 HS 0922+1333 RS* 09 24 56.1 +13 20 52   19 16.42     ~ 23 0
8 V* HY Leo XB* 09 46 34.4705286598 +13 50 57.849294677           ~ 15 0
9 2MASS J09463597+1349120 * 09 46 35.944 +13 49 13.65   14.6 14.4     ~ 1 0
10 USNO-A2.0 0975-06331245 * 09 46 35.9759644242 +13 50 46.350997409   15.9 15.9     ~ 1 0
11 V* WX LMi AM* 10 26 27.4935083792 +38 45 02.654772807   18   16.77   ~ 42 0
12 V* V1025 Cen DQ* 12 38 16.3192991908 -38 42 45.842752382   15.20       ~ 58 0
13 V* EX Hya DN* 12 52 24.2220533405 -29 14 56.001981146   13.51 13.49 13.55   M5-6V 650 0
14 V* AP CrB AM* 15 54 12.3454788903 +27 21 52.288656834     16.87 16.5   M3 37 0
15 V* V455 And DN* 23 34 01.4485468687 +39 21 40.866526351   16.22 16.09 16.14   ~ 116 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-18:30:29

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