Angular Expansion of Nova Shells
Por:
Santamaria, E., Guerrero, M. A., Ramos-Larios, G., Toala, J. A., Sabin, L., Rubio, G., Quino-Mendoza, J. A.
Publicada:
20 mar 2020
Resumen:
Nova shells can provide important information on their distance, their
interactions with circumstellar and interstellar media, and the
evolution in morphology of the ejecta. We have obtained narrowband
images of a sample of five nova shells, namely DQ Her, FH Ser, T Aur,
V476 Cyg, and V533 Her, with ages ranging from 50 to 130 yr. These
images have been compared with suitable available archival images to
derive their angular expansion rates. We find that all the nova shells
in our sample are still in the free expansion phase, which can be
expected, as the mass of the ejecta is 7-45 times larger than the mass
of the swept-up circumstellar medium. The nova shells will keep
expanding freely for time periods up to a few hundred years, reducing
their time dispersal into the interstellar medium.
Filiaciones:
Santamaria, E.:
Univ Guadalajara, CUCEI, Blvd Marcelino Garcia Barragan 1421, Guadalajara 44430, Jalisco, Mexico
CUCEI, Dpto Fis, Inst Astron & Meteorol, Ave Vallarta 2602, Guadalajara 44130, Jalisco, Mexico
Guerrero, M. A.:
CSIC, IAA, Glorieta Astron S-N, E-18008 Granada, Spain
Ramos-Larios, G.:
Univ Guadalajara, CUCEI, Blvd Marcelino Garcia Barragan 1421, Guadalajara 44430, Jalisco, Mexico
CUCEI, Dpto Fis, Inst Astron & Meteorol, Ave Vallarta 2602, Guadalajara 44130, Jalisco, Mexico
Toala, J. A.:
Inst Radioastron & Astrofis IRyA, UNAM Campus Morelia,Apartado Postal 3-72, Morelia 58090, Michoacan, Mexico
Sabin, L.:
Univ Nacl Autonoma Mexico, Inst Astron, Apdo Postal 877, Ensenada 22860, Baja California, Mexico
Rubio, G.:
Univ Guadalajara, CUCEI, Blvd Marcelino Garcia Barragan 1421, Guadalajara 44430, Jalisco, Mexico
CUCEI, Dpto Fis, Inst Astron & Meteorol, Ave Vallarta 2602, Guadalajara 44130, Jalisco, Mexico
Quino-Mendoza, J. A.:
Univ Guadalajara, CUCEI, Blvd Marcelino Garcia Barragan 1421, Guadalajara 44430, Jalisco, Mexico
CUCEI, Dpto Fis, Inst Astron & Meteorol, Ave Vallarta 2602, Guadalajara 44130, Jalisco, Mexico
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