CVNET

Cataclysmic Variables Network

ACTIVITY AT A GLANCE

Last updated 08:31 UT on 2 October 2022

(All objects mentioned in 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 ema il lists.

New outbursts and unusual activity reported in the last 72 hours


YYYYMMDD


20221001

SS Aur

SV CMi

V1028 Cyg:

FL Lyn:

KT Per

ER UMa

SU UMa

ASASSN-14gu:

TCPJ 20100517+1303006


20220930

PU CMa

AM Cas

WX Cet #*

UV Gem

ST Cha

DM CMa

LT Eri

EF Peg #*

V476 Peg

TY PsA

V730 Sgr

TW Tri

SY Vol

CRTS J223418.5-035530:

CSS J062450.0+503111:


20220929

FI Cas:

V513 Cas:

V792 Cyg

V2209 Cyg:

IS Del

BC Dor

IX Dra:

CK Eri

CY Lyr

GS Pav

V1089 Sgr

VW Tuc

VW Vul

CRTS J051419.9+011121:

MASTER OT J001204.00-412337.4 (sixth rebrightening)

NSV 35


Current superoutbursts (since ...)
ASASSN-22jz :#* (20220808, mag. 9.7)
KK Tel : (20220802, UGSU)
SY Cap (20220801, UGSU)
ASASSN-13ce (20220801, UGSU, precursor outburst on 20220728)
VW Hyi (20220731, UGSU)
V368 Peg (20220731, UGSU)
AO Oct (20220720, UGSU)
V632 Cyg (20220717, UGSU)
MASTER OT J001204.00-412337.
4 #* (20220716; Psh= 0.063 d)
VY Aqr # (20220707, UGSU)
HO Del (20220707, UGSU)
TCP J22561804+4109534 :#* (20220626)
ASASSN-18su :#* (20220624)
QZ Vir = T Leo (20220621)
V485 Cen (20220602, EI Psc star, precursor outburst 20220527)
ASASSN-22ha #* (20220520, UGWZ)
MASTER OT J172758.09+380021.5 (20220514)
TCP J14225968+4122545 = XM116HT #* (20220509, UGWZ)
BC UMa #* (20220430, UGWZ, faint superoutburst)



Z Cam-type dwarf novae at standstill
HL CMa (since 20211205 or earlier)
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


AAVSO Alert Notice 793

Nova in Mensa: N Men 2022 (= ATLAS22beux = AT 2022ufh)

30 September, 2022


AAVSO Alert Notice 790

ASASSN-14cn to be observed with HST

27 August, 2022


AAVSO Alert Notice 784

T Pyx monitoring requested for upcoming HST campaigns

5 July 2022


AAVSO Alert Notice 783

V485 Aqr and UU Aql are HST targets in July and August

5 July 2022


Another dwarf nova outburst of X Serpentis (Nova 1903) began on 2022 June 9 (a previous outburst outburst occurred from 2021 July 28 to September 10).


AAVSO Alert Notice 781

Nova in Musca – Nova Muscae 2022 (= ASASSN-22hw = AT 2022mmp)

Note: N Mus 2022 = V415 Mus

14 June 2022


AAVSO Alert Notice 758

Monitoring requested for 11 dwarf novae in support of HST observations in 2021–2022

26 October 2021


AAVSO Alert Notice 754

Monitoring requested for 15 VY Scl CVs in support of HST observations

14 September 2021


AAVSO Alert Notice 753

Monitoring requested for seven intermediate polars

23 August 2021


Recent Papers on CVs

For new papers on CVs see arxiv.org astro-ph


Updated 20 September 2022


A magnetic valve at L1 revealed in TESS photometry of the asynchronous polar BY Cam

Paul A. Mason, Colin Littlefield, Lorena C. Monroy, John F. Morales, Pasi Hakala, Peter Garnavich, Paula Szkody, Mark R. Kennedy, Gavin Ramsay, Simone Scaringi


Testing the third body hypothesis in the Cataclysmic Variables LU Camelopardalis, QZSerpentis, V1007 Herculis and BK Lyncis

Carlos E. Chavez, Nikolaos Georgakarakos, Andres Aviles, Hector Aceves, Gagik Tovmassian, Sergey Zharikov, J. E. Perez-Leon, Francisco Tamayo


V392 Persei: a γ-ray bright nova eruption from a known dwarf nova

F. J. Murphy-Glaysher, M. J. Darnley, É. J. Harvey, A. M. Newsam, K. L. Page, S. Starrfield, R. M. Wagner, C. E. Woodward, D. M. Terndrup, S. Kafka, T. Arranz Heras, P. Berardi, E. Bertrand, R. Biernikowicz, C. Boussin, D. Boyd, Y. Buchet, M. Bundas, D. Coulter, D. Dejean, A. Diepvens, S. Dvorak, J. Edlin, T. Eenmae, H. Eggenstein, R. Fournier, O. Garde, J. Gout, D. Janzen, P. Jordanov, H. Kiiskinen, D. Lane, R. Larochelle, R. Leadbeater, D. Mankel, G. Martineau, I. Miller, R. Modic, J. Montier, M. Morales Aimar, E. Muyllaert, R. Naves Nogues, D. O'Keeffe, A. Oksanen, M. Pyatnytskyy, R. Rast, B. Rodgers, D. Rodriguez Perez, F. Schorr, E. Schwendeman, S. Shadick, S. Sharpe, F. Soldán Alfaro, T. Sove, G. Stone, T. Tordai, R. Venne, W. Vollmann, M. Vrastak, K. Wenzel


Romanov V48: unusual intermediate polar in the period gap

Taichi Kato (Kyoto U), Filipp D. Romanov


Transients from the Cataclysmic Deaths of Cataclysmic Variables

Brian D. Metzger, Yossef Zenati, Laura Chomiuk, Ken J. Shen, Jay Strader


The 2021 outburst of RS Oph: a pictorial atlas of the spectroscopic evolution. II. From day 19 to 102 (solar conjunction)

U. Munari & P. Valisa


Spectroscopic Observations of V455 Andromedae Superoutburst in 2007: the Most Exotic Spectral Features in Dwarf Nova Outbursts

Yusuke Tampo, Daisaku Nogami, Taichi Kato, Kazuya Ayani, Hiroyuki Naito, Norio Narita, Mitsugu Fujii, Osamu Hashimoto, Kenzo Kinugasa Satoshi Honda, Hidenori Takahashi, Shin-ya Narusawa, Makoto Sakamoto, Akira Imada


Periodic modulations during a long outburst in V363 Lyr

Taichi Kato


MP Gem: VY Scl-type star, finally

Taichi Kato


The 2019 outburst of the 2005 classical nova V1047 Cen: a record breaking dwarf nova outburst or a new phenomenon?

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


The intermediate polar cataclysmic variable GK Persei 120 years after the nova explosion: a first dynamical mass study

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