2025MNRAS.539.1894K

Query : 2025MNRAS.539.1894K

2025MNRAS.539.1894K - Mon. Not. R. Astron. Soc., 539, 1894-1907 (2025/May-3)

A MeerKAT survey of nearby dwarf novae: I. New detections.

KERSTEN J., KORDING E., WOUDT P.A., GROOT P.J., WILLIAMS D.R.A., HEYWOOD I., COPPEJANS D.L., KNIGGE C., MILLER-JONES J.C.A., SIVAKOFF G.R. and FENDER R.

Abstract (from CDS):

A programme to search for radio emission from dwarf-novae-type cataclysmic variables was conducted with the South African MeerKAT radio telescope. The dwarf novae RU Pegasi, V426 Ophiuchi, and IP Pegasi were detected during outburst at L band (1284 MHz central frequency). Previously, only one cataclysmic variable was radio-detected at a frequency this low. We now bring the number to four. With these three newly found radio-emitters, the population of dwarf novae confirmed to be radio-emitting at any frequency reaches 10 systems. We found that the radio luminosity is correlated with the optical luminosity. For V426 Ophiuchi and RU Pegasi we found a radio decline contemporary with the outburst's optical decline. The peak radio luminosity of dwarf novae in outburst is very similar to that of novalike Cataclysmic Variables and no correlation with orbital period is seen.

Abstract Copyright: © 2025 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): binaries: eclipsing - stars: dwarf novae - stars: individual: RU Pegasi - stars: individual: V426 Ophiuchi - stars: individual: IP Pegasi - radio continuum: transients

Simbad objects: 19

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Number of rows : 19
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 V* RX And CV* 01 04 35.5379487744 +41 17 57.784196472   13.713 13.429 11.788   ~ 322 0
2 V* TY Psc CV* 01 25 39.3569919912 +32 23 08.895723252           ~ 122 0
3 V* TT Ari CV* 02 06 53.0797508832 +15 17 41.851038804   10.73 10.20     Bep: 459 0
4 V* IM Eri CV* 04 24 41.1074284200 -20 07 11.759455164 11.65 11.88 11.93     ~ 38 0
5 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1135 0
6 V* YZ Cnc CV* 08 10 56.6511822192 +28 08 33.260657100     15.24     ~ 256 0
7 V* SU UMa CV* 08 12 28.2695986944 +62 36 22.427676396           B2 516 0
8 V* Z Cam CV* 08 25 13.1986690656 +73 06 39.284964108   12.006 11.927 11.712   ~ 554 0
9 V* RW Sex CV* 10 19 56.6224471752 -08 41 56.106711816   10.674 10.645 10.747 10.598 DAe 216 0
10 V* UZ Boo CV* 14 44 01.2123285360 +22 00 54.812924316           ~ 78 1
11 V* V426 Oph CV* 18 07 51.6919772928 +05 51 47.804055084           ~ 182 0
12 V* V603 Aql No* 18 48 54.6369872232 +00 35 02.857106184 10.73 12.106 12.087 11.986   OB+e: 564 0
13 V* EM Cyg CV* 19 38 40.1068970904 +30 30 28.332591012     11.90     ~ 270 0
14 CD-42 14462 CV* 19 47 40.5290567472 -42 00 26.395115580 9.65 10.362 10.308 10.520   sdB 243 0
15 V* WZ Sge CV* 20 07 36.5037622512 +17 42 14.733254952   15.30 15.20 10.817   D 982 0
16 MASTER OT J213806.60+261957.0 CV* 21 38 06.6254940456 +26 19 56.032997592 15.69 15.72 15.23 14.76 14.30 ~ 54 0
17 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1324 1
18 V* RU Peg CV* 22 14 02.5505986656 +12 42 11.278107972     12     sdBe+G8IV:n 322 0
19 V* IP Peg CV* 23 23 08.5362249504 +18 24 59.206884012           M2 395 0

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