Post-eruption detection of variable 12 in NGC 2403 (SN 1954j): Another η Carinae variable

Nathan Smith; Roberta M. Humphreys; Robert D. Gehrz

doi:10.1086/320812

Post-eruption detection of variable 12 in NGC 2403 (SN 1954j): Another η Carinae variable

Nathan Smith, Roberta M. Humphreys, Robert D. Gehrz

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32 Scopus citations

Abstract

We have obtained optical and near-infrared imaging photometry of the irregular variable V12 in NGC 2403 (SN 1954j), roughly 50 years after its giant eruption. The observations confirm that the star survived the event and that it was therefore not a peculiar supernova but instead was an η Carinae-like eruption. Variable 12 is now very faint and red, which could be due to extinction and reddening of a hot star by circumstellar dust that formed in ejecta from the giant eruption in 1954. A clear excess at ∼2 μm probably indicates thermal emission from hot circumstellar dust.

Original language	English (US)
Pages (from-to)	692-696
Number of pages	5
Journal	Publications of the Astronomical Society of the Pacific
Volume	113
Issue number	784
DOIs	https://doi.org/10.1086/320812
State	Published - Jun 2001
Externally published	Yes

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Astronomy and Astrophysics
Space and Planetary Science

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title = "Post-eruption detection of variable 12 in NGC 2403 (SN 1954j): Another η Carinae variable",

abstract = "We have obtained optical and near-infrared imaging photometry of the irregular variable V12 in NGC 2403 (SN 1954j), roughly 50 years after its giant eruption. The observations confirm that the star survived the event and that it was therefore not a peculiar supernova but instead was an η Carinae-like eruption. Variable 12 is now very faint and red, which could be due to extinction and reddening of a hot star by circumstellar dust that formed in ejecta from the giant eruption in 1954. A clear excess at ∼2 μm probably indicates thermal emission from hot circumstellar dust.",

author = "Nathan Smith and Humphreys, {Roberta M.} and Gehrz, {Robert D.}",

year = "2001",

month = jun,

doi = "10.1086/320812",

language = "English (US)",

volume = "113",

pages = "692--696",

journal = "Publications of the Astronomical Society of the Pacific",

issn = "0004-6280",

publisher = "University of Chicago",

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T2 - Another η Carinae variable

AU - Smith, Nathan

AU - Humphreys, Roberta M.

AU - Gehrz, Robert D.

PY - 2001/6

Y1 - 2001/6

N2 - We have obtained optical and near-infrared imaging photometry of the irregular variable V12 in NGC 2403 (SN 1954j), roughly 50 years after its giant eruption. The observations confirm that the star survived the event and that it was therefore not a peculiar supernova but instead was an η Carinae-like eruption. Variable 12 is now very faint and red, which could be due to extinction and reddening of a hot star by circumstellar dust that formed in ejecta from the giant eruption in 1954. A clear excess at ∼2 μm probably indicates thermal emission from hot circumstellar dust.

AB - We have obtained optical and near-infrared imaging photometry of the irregular variable V12 in NGC 2403 (SN 1954j), roughly 50 years after its giant eruption. The observations confirm that the star survived the event and that it was therefore not a peculiar supernova but instead was an η Carinae-like eruption. Variable 12 is now very faint and red, which could be due to extinction and reddening of a hot star by circumstellar dust that formed in ejecta from the giant eruption in 1954. A clear excess at ∼2 μm probably indicates thermal emission from hot circumstellar dust.

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JF - Publications of the Astronomical Society of the Pacific

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Post-eruption detection of variable 12 in NGC 2403 (SN 1954j): Another η Carinae variable

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