The Rise of SN 2014J in the Nearby Galaxy M82
Abstract
We report on the discovery of SN 2014J in the nearby galaxy M82. Given its proximity, it offers the best opportunity to date to study a thermonuclear supernova (SN) over a wide range of the electromagnetic spectrum. Optical, near-IR, and mid-IR observations on the rising light curve, orchestrated by the intermediate Palomar Transient Factory, show that SN 2014J is a spectroscopically normal Type Ia supernova (SN Ia), albeit exhibiting high-velocity features in its spectrum and heavily reddened by dust in the host galaxy. Our earliest detections start just hours after the fitted time of explosion. We use high-resolution optical spectroscopy to analyze the dense intervening material and do not detect any evolution in the resolved absorption features during the light curve rise. Similar to other highly reddened SNe Ia, a low value of total-to-selective extinction, R_V ≲ 2, provides the best match to our observations. We also study pre-explosion optical and near-IR images from Hubble Space Telescope with special emphasis on the sources nearest to the SN location.
Additional Information
© 2014 American Astronomical Society. Received 2014 February 7; accepted 2014 February 21; published 2014 March 7. We thank S. Fossey for making the discovery R-band image of SN 2014J available to us. We are grateful to S. Fossey and M. Phillips for helpful comments on the manuscript. We acknowledge A. McKay, A. Bradley, N. Scoville, P. L. Capak, C. M. Carollo, S. Lilly, H. Sheth, V. Bhalerao, P. Donati, S. Geier, F. Saturni, G. Nowak, and A. Finoguenov for cooperating with ToO observations. A.G. and R.A. acknowledge support from the Swedish Research Council and the Swedish Space Board and A.G.-Y. an ERC grant. M.M.K. acknowledges generous support from the Hubble Fellowship and Carnegie-Princeton Fellowship. Based on observations made with the Nordic Optical Telescope, operated by the Nordic Optical Telescope Scientific Association at the Observatorio del Roque de los Muchachos, La Palma, Spain, of the Instituto de Astrofisica de Canarias, Faulkes Telescope North image observed by Gain Lee, the Mount Abu 1.2 m Infrared telescope, India, and the 1.93 m telescope of Haute-Provence Observatory, CNRS, France. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.Attached Files
Published - 2041-8205_784_1_L12.pdf
Submitted - 1402.0849v3.pdf
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Additional details
- Eprint ID
- 45217
- Resolver ID
- CaltechAUTHORS:20140425-092110085
- Swedish Research Council
- Swedish Space Board
- NASA Hubble Fellowship
- Carnegie-Princeton Fellowship
- European Research Council (ERC)
- DE-AC02-05CH11231
- Department of Energy (DOE)
- Created
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2014-04-28Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC), Palomar Transient Factory, Division of Geological and Planetary Sciences