2018A&A...614A.141S


Query : 2018A&A...614A.141S

2018A&A...614A.141S - Astronomy and Astrophysics, volume 614A, 141-141 (2018/6-1)

Complex long-term activity of the post-nova X Serpentis.

SIMON V.

Abstract (from CDS):


Aims. X Ser is a cataclysmic variable (CV) which erupted as a classical nova in 1903. In this work we use over 100 years of photometry to characterize the long-term light curve of X Ser, with the aim of interpreting the post-nova activity in X Ser in the context of behaviors in other old novae.
Methods. This analysis of its long-term optical activity uses the data from the Digital Access to a Sky Century @ Harvard (DASCH), AAVSO, and Catalina Real-time Transient Survey databases, supplemented by the data of other authors.
Results. We show that X Ser displays a strong complex activity with the characteristics of various CV types after the return to quiescence from its classical nova outburst. Both nova-like and dwarf nova (DN) features are present. The decaying branches of the individual post-nova outbursts display large mutual similarities and obey the Bailey law for outbursts of DNe. These outbursts of X Ser constitute a uniform group (inside-out outbursts), and their decaying branches can be explained by propagation of cooling front through the accretion disk. In the interpretation, X Ser rapidly transitioned to a thermal-viscous instability regime of the disk, initially only intermittently. The occurrence of the DN outbursts shortly after the end of the nova outburst suggests that the mass transfer rate into the disk was usually not sufficiently high to prevent a thermal-viscous instability of this post-nova. The very long orbital period, and hence large accretion disk of X Ser can contribute to this.

Abstract Copyright: © ESO 2018

Journal keyword(s): accretion, accretion disks - radiation mechanisms: general - novae, cataclysmic variables - dwarf novae - circumstellar matter - individual: X Ser

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 V* GK Per No* 03 31 12.0098863320 +43 54 15.469951212   14.139 13.090 12.589   K1IV 891 0
2 V* UY Pup CV* 07 46 31.2402238920 -12 57 08.997056712         15.09 K2/6+? 34 0
3 V* Z Cam CV* 08 25 13.1986690656 +73 06 39.284964108   12.006 11.927 11.712   ~ 503 0
4 V* AT Cnc CV* 08 28 36.9270732360 +25 20 03.045311628   14.798 14.583 13.690   DAe: 98 0
5 V* BK Lyn CV* 09 20 11.2020621696 +33 56 42.356468364   13.97 13.99 14.72   ~ 104 1
6 V* DO Dra CV* 11 43 38.4921265896 +71 41 20.559036192       13.747   DQ 204 1
7 V* X Ser No* 16 19 17.6857680120 -02 29 29.533236000           ~ 60 0
8 V* V1017 Sgr No* 18 32 04.4738065392 -29 23 12.593851152           G5IIIp 129 0
9 V* HR Del No* 20 42 20.3468874528 +19 09 39.305636208   12.380 12.404 12.508   ~ 476 0
10 V* DX And CV* 23 29 46.6838648136 +43 45 04.034136924           ~ 93 0

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2022.05.28-01:27:26

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