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Classical Novae Masquerading as Dwarf Novae? Outburst Properties of Cataclysmic Variables with ASAS-SN
Indexado
WoS WOS:000636987200001
Scopus SCOPUS_ID:85104862526
DOI 10.3847/1538-4357/ABE53D
Año 2021
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



The unprecedented sky coverage and observing cadence of the All-Sky Automated Survey for SuperNovae (ASAS-SN) has resulted in the discovery and continued monitoring of a large sample of Galactic transients. The vast majority of these are accretion-powered dwarf nova outbursts in cataclysmic variable systems, but a small subset are thermonuclear-powered classical novae. Despite improved monitoring of the Galaxy for novae from ASAS-SN and other surveys, the observed Galactic nova rate is still lower than predictions. One way classical novae could be missed is if they are confused with the much larger population of dwarf novae. Here, we examine the properties of 1617 dwarf nova outbursts detected by ASAS-SN and compare them to classical novae. We find that the mean classical nova brightens by similar to 11 mag during outburst, while the mean dwarf nova brightens by only similar to 5 mag, with the outburst amplitude distributions overlapping by roughly 15%. For the first time, we show that the amplitude of an outburst and the time it takes to decline by two magnitudes from maximum are positively correlated for dwarf nova outbursts. For classical novae, we find that these quantities are negatively correlated, but only weakly, compared to the strong anticorrelation of these quantities found in some previous work. We show that, even if located at large distances, only a small number of putative dwarf novae could be misclassified as classical novae, suggesting that there is minimal confusion between these populations. Future spectroscopic follow-up of these candidates can show whether any are indeed classical novae.

Revista



Revista ISSN
Astrophysical Journal 0004-637X

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Disciplinas de Investigación



WOS
Astronomy & Astrophysics
Scopus
Sin Disciplinas
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Kawash, A. Hombre Michigan State Univ - Estados Unidos
Michigan State University - Estados Unidos
2 Chomiuk, L. Mujer Michigan State Univ - Estados Unidos
Michigan State University - Estados Unidos
3 Strader, J. - Michigan State Univ - Estados Unidos
Michigan State University - Estados Unidos
4 Aydi, Elias Hombre Michigan State Univ - Estados Unidos
Michigan State University - Estados Unidos
5 Sokolovsky, K. Hombre Michigan State Univ - Estados Unidos
Moscow MV Lomonosov State Univ - Rusia
Michigan State University - Estados Unidos
Lomonosov Moscow State University - Rusia
6 Jayasinghe, T. - OHIO STATE UNIV - Estados Unidos
The Ohio State University - Estados Unidos
7 Kochanek, C. S. Hombre OHIO STATE UNIV - Estados Unidos
The Ohio State University - Estados Unidos
8 Schmeer, Patrick Hombre Bischmisheim - Alemania
9 Stanek, K. Z. - OHIO STATE UNIV - Estados Unidos
10 Mukai, Koji Hombre NASA - Estados Unidos
UNIV MARYLAND - Estados Unidos
NASA Goddard Space Flight Center - Estados Unidos
University of Maryland, Baltimore County (UMBC) - Estados Unidos
11 Shappee, Benjamin Hombre Univ Hawaii Manoa - Estados Unidos
University Hawaii Institute for Astronomy - Estados Unidos
12 Way, Z. - OHIO STATE UNIV - Estados Unidos
The Ohio State University - Estados Unidos
13 Basinger, C. - OHIO STATE UNIV - Estados Unidos
The Ohio State University - Estados Unidos
14 Holoien, Thomas W. -S. Hombre Observatorio Las Campanas - Estados Unidos
Carnegie Observ - Estados Unidos
15 PRIETO-KATUNARIC, JOSE LUIS Hombre Universidad Diego Portales - Chile
Instituto Milenio de Astrofísica - Chile

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Financiamiento



Fuente
National Science Foundation
NSF
Gordon and Betty Moore Foundation
Mt. Cuba Astronomical Foundation
Center for Cosmology and AstroParticle Physics at the Ohio State University
Villum Foundation
Packard Foundation
Chinese Academy of Sciences South America Center for Astronomy (CAS- SACA)
Cottrell fellowship of the Research Corporation

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
We thank the Las Cumbres Observatory and its staff for its continuing support of the ASAS-SN project. ASAS-SN is supported by the Gordon and Betty Moore Foundation through grant GBMF5490 to the Ohio State University, and NSF grants AST-1515927 and AST-1908570. Development of ASAS-SN has been supported by NSF grant AST-0908816, the Mt. Cuba Astronomical Foundation, the Center for Cosmology and AstroParticle Physics at the Ohio State University, the Chinese Academy of Sciences South America Center for Astronomy (CAS- SACA), and the Villum Foundation.
We thank the Las Cumbres Observatory and its staff for its continuing support of the ASAS-SN project. ASAS-SN is supported by the Gordon and Betty Moore Foundation through grant GBMF5490 to the Ohio State University, and NSF grants AST-1515927 and AST-1908570. Development of ASAS-SN has been supported by NSF grant AST-0908816, the Mt. Cuba Astronomical Foundation, the Center for Cosmology and AstroParticle Physics at the Ohio State University, the Chinese Academy of Sciences South America Center for Astronomy (CAS- SACA), and the Villum Foundation.

Muestra la fuente de financiamiento declarada en la publicación.