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Akademický článek

Snowflakes in a Furnace: Formation of CO and Dust in a Recurrent Nova Eruption

Autor: D. P. K. Banerjee, C. E. Woodward, V. Joshi, A. Evans, F. M. Walter, G. H. Marion, E. Y. Hsiao, N. M. Ashok, R. D. Gehrz, S. Starrfield

Publikováno v: The Astrophysical Journal Letters, Vol 954, Iss 1, p L16 (2023)

We report the detection of carbon monoxide (CO) and dust, formed under hostile conditions, in recurrent nova V745 Sco about 8.7 days after its 2014 outburst. The formation of molecules or dust has not been recorded previously in the ejecta of a recur

Externí odkaz: https://doaj.org/article/9162686c2f9f48cfbcdcadc2fc37df52

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Akademický článek

JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition

Publikováno v: The Astrophysical Journal, Vol 959, Iss 2, p 95 (2023)

JWST Near Infrared Camera (NIRCam) observations at 1.5–4.5 μ m have provided broadband and narrowband imaging of the evolving remnant of SN 1987A with unparalleled sensitivity and spatial resolution. Comparing with previous marginally spatially re

Externí odkaz: https://doaj.org/article/c1b4a2c811ad4c9293c3c0b2446249ad

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The recurrent nova V3890~Sgr: a near-infrared and optical study of the red giant component and its environment

Autor: B Kaminsky, A Evans, Ya V Pavlenko, C E Woodward, D P K Banerjee, R D Gehrz, F Walter, S Starrfield, I Ilyin, K G Strassmeier, R M Wagner

We present an analysis of the red giant component of the recurrent nova V3890 Sgr, using data obtained before and after its 2019 eruption. Its effective temperature is $T_{\rm eff}=3050\pm$200 K for $\log{g}=0.7$, although there are modest changes in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc5791ede7916af440418c947a98deb3
http://arxiv.org/abs/2207.14721

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Rise and fall of silicate dust in RS Ophiuchi following the 2006 eruption

Autor: M T Rushton, C E Woodward, R D Gehrz, A Evans, B Kaminsky, Ya V Pavlenko, S P S Eyres

We present an analysis of archival Spitzer InfraRed Spectrograph (IRS) observations of the recurrent nova RS Ophiuchi obtained on several occasions, beginning about 7 months after the outburst in 2006. These data show atomic emission lines, absorptio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ac55e1a21558a6d3a68b6b60ca9e5a8

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Infrared spectroscopy of the 2019 eruption of the recurrent nova V3890 Sgr: separation into equatorial and polar winds revealed

Autor: A Evans, T R Geballe, C E Woodward, D P K Banerjee, R D Gehrz, S Starrfield, M Shahbandeh

We present infrared spectroscopy of the 2019 eruption of the recurrent nova V3890 Sgr, obtained over the period 5.1-46.3 days after the eruption. The spectrum of the red giant became more prominent as the flux declined, and by day 46.3 dominated the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09aaf350fb0460211389509aee01a69c

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