SiO Maser Spectra of V407 Cyg after the 2010 March Nova Outburst

Abstract

We report on the time variation of SiO maser emission from the symbiotic stellar system V407 Cyg after the classical nova outburst on 2010 March 10. Although both the SiO $J=1$--0 $v=1$ and 2 lines at 43.122 and 42.821 GHz were found previously in the envelope of a mira in the binary system, only weak emission of the $J=1$--0 $v=2$ line has continuously been detectable after the nova outburst. The line profile exhibited a dramatic change several weeks after the burst; the component on the higher-velocity side of the systemic velocity disappeared two weeks after the burst, and a new persistent component appeared on the lower-velocity side later. These observations indicate that the SiO emitting regions are wiped out in a time scale of two weeks by the nova shock, but a part of the masing region is quickly replenished by cool molecular gases expelled by the mira pulsation.

1 table, 3 figures; PASJ 63 no.1 (2011 Feb. 25 issue) in press. Available online at http://www.nro.nao.ac.jp/~lib_pub/report/data/no677.pdf

References in corpus (5)

• Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni
• X-Ray Emitting Blast Wave from the Recurrent Nova RS Ophiuchi
• An asymmetric shock wave in the 2006 outburst of the recurrent nova RS Ophiuchi
• A Universal Decline Law of Classical Novae
• The 2010 nova outburst of the symbiotic Mira V407 Cyg

Cited by in corpus (11)

• ExoMol line lists II: The ro-vibrational spectrum of SiO
• ExoMol molecular line lists V: The ro-vibrational spectra of NaCl and KCl
• Modeling the 2010 blast wave of the symbiotic-like nova V407 Cygni
• The Radio Light Curve of the Gamma-Ray Nova in V407 Cyg: Thermal Emission from the Ionized Symbiotic Envelope, Devoured from Within by the Nova Blast
• A Light Curve Analysis of Recurrent and Very Fast Novae in our Galaxy, Magellanic Clouds, and M31
• The spectroscopic evolution of the symbiotic-like recurrent nova V407 Cygni during its 2010 outburst. II. The circumstellar environment and the aftermath
• Very Long Baseline Interferometry imaging of the advancing ejecta in the first gamma-ray nova V407 Cyg
• Gas phase SiO in the circumstellar environment of the recurrent nova T Coronae Borealis
• Radio Stars and Their Lives in the Galaxy
• KVN Monitoring Obsevations toward the Recent Outburst Symbiotic Star V407 Cygni
• Stringent limits on ${}^{28}$SiO maser emission from the recurrent nova T Coronae Borealis