CVNET
Cataclysmic Variables Network
ACTIVITY AT A GLANCE
Last updated 16:01 UT on 3 December 2021
(All objects mentioned this section are in the International Variable Star Index; additionally, VSX links have been given for selected cataclysmic variables)
'Activity at a Glance' is gleaned from observations reported to AAVSO MyNewsFlash, BAAVSS-Alert, CVnet-Outburst, VSObs-share and VSNET-outburst. We sincerely thank all the observers who contribute timely observations and reports of activity to these email lists.
New outbursts and unusual activity reported in the last 72 hours
YYYYMMDD
20211203
GS Pav
20211201
CR Boo
Z Cam
AM Cas
V452 Cas
IR Gem
DO Leo
MV Leo
CN Ori
KT Per
CY UMa
ASASSN-13dc
ASASSN-13pq
CRTS J084358.1+425037
SDSS J092229.26+330743.6
20211130
WW Cet
WX Hyi
DT Pyx (rebrightening)
Current superoutbursts (since ...)
MASTER OT J030227.28+191754.5 #* (20211126, UGWZ – not a nova)
MASTER OT J085854.16-274030.7 (20211119, UGWZ)
CRTS J002656.6+284933 #* (20211023, UGSU, above period gap)
OGLE-MC-DN-0008 #* (20211019, very rare outburst)
1RXS J003828.7+250920 (20211014, UGSU)
ASASSN-14ac # (20211015, UGWZ, precursor outburst 20211013)
SDSS J203501.46-001946.1 :* (20210927, UGSU:)
MASTER OT J055845.55+391533.4 * (20210923, UGSU)
ASASSN-16og : (20210921, UGSU)
LL And #* (20210912, UGWZ)
ASASSN-19ax :* (20210910, UGSU:)
SU UMa (20211009)
MASTER OT J055845.55+391533.4 (20210909, UGSU)
NY Her (20210828, UGSU)
V493 Lyr : (20210828, UG)
V1024 Per (20210827, UGSU)
GV Psc (20210827, UGSU)
OT J215818.5+241925 * (20210827, UGSU)
SDSS J172102.48+273301.2 #* (20210826, AM CVn star)
ASASSN-21nv :# (20210727, UGWZ:)
Z Cam-type dwarf novae at standstill
Z Cam ends long 1,051 day standstill on 20210828 (started on 20181012)
# indicates a noteworthy or unusual activity
: indicates confirmation required
* indicates time-resolved photometry required
CV News
Monitoring requested for 11 dwarf novae in support of HST observations in 2021–2022
26 October 2021
Monitoring requested for 15 VY Scl CVs in support of HST observations
14 September 2021
Monitoring requested for seven intermediate polars
23 August 2021
RECENT PAPERS ON CVs
For new papers on CV's see arxiv.org astro-ph
Updated 16 November 2021
Periodic modulations during a long outburst in V363 Lyr
Taichi Kato
MP Gem: VY Scl-type star, finally
Taichi Kato
E. Aydi, K. V. Sokolovsky, J. S. Bright, E. Tremou, M. M. Nyamai, A. Evans, J. Strader, L. Chomiuk, G. Myers, F-J. Hambsch, K. L. Page, D. A. H. Buckley, C. E. Woodward, F. M. Walter, P. Mróz, P. J. Vallely, T. R. Geballe, D. P. K. Banerjee, R. D. Gehrz, R. P. Fender, M. Gromadzki, A. Kawash, C. Knigge, K. Mukai, U. Munari, M. Orio, V. A. R. M. Ribeiro, J. L. Sokoloski, S. Starrfield, A. Udalski, P. A. Woudt
MGAB-V859 and ZTF18abgjsdg: ER UMa-type dwarf novae showing standstills
Taichi Kato, Naoto Kojiguchi (Kyoto U)
The role of complex ionized absorber in the soft X-ray spectra of Intermediate Polars
Nazma Islam, Koji Mukai
The Detailed Light Curve Evolution of V1674 Her (Nova Her 2021)
R. M. Quimby, A. W. Shafter, H. Corbett
A. Álvarez-Hernández (1,2), M. A. P. Torres (1,2), P. Rodríguez-Gil (1,2), T. Shahbaz (1,2), G. C. Anupama (3), K. D. Gazeas (4), M. Pavana (3,5), A. Raj (6), P. Hakala (7), G. Stone (8), S. Gomez (9), P. G. Jonker (10,11), J.-J. Ren (12), G. Cannizzaro (10,11), I. Pastor-Marazuela (13,14), W. Goff (15), J. M. Corral-Santana (16), R. Sabo (17) ((1) Instituto de Astrofísica de Canarias, (2) Departamento de Astrofísica, Universidad de La Laguna, (3) Indian Institute of Astrophysics, (4) Section of Astrophysics, Astronomy and Mechanics, Department of Physics, National and Kapodistrian University of Athens, (5) Department of Physics, Pondicherry University, (6) Dept. of Physics & Astrophysics, University Road, University Enclave, (7) Finnish Centre for Astronomy with ESO (FINCA), Quantum, University of Turku, (8) First Light Observatory Systems, (9) Center for Astrophysics | Harvard & Smithsonian, (10) SRON, Netherlands Institute for Space Research, (11) Department of Astrophysics / IMAPP, Radboud University, (12) CAS Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, (13) Anton Pannekoek Institute, University of Amsterdam, (14) ASTRON, the Netherlands Institute for Radio Astronomy, (15) American Association of Variable Star Observers, (16) European Southern Observatory, (17) American Association of Variable Star Observers)
CV artwork courtesy Darren Baskill