THE RISE OF SN 2014J IN THE NEARBY GALAXY M82

Journal Article · Thu Mar 20 00:00:00 EDT 2014 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/784/1/L12· OSTI ID:22365962

Goobar, A.; Johansson, J.; Amanullah, R.; Ferretti, R. ^[1]; Cao, Y.; Perley, D. A.; Tendulkar, S. P. ^[2]; Kasliwal, M. M. ^[3]; Nugent, P. E.; Harris, C. ^[4]; Gal-Yam, A.; Ofek, E. O. ^[5]; Dennefeld, M. ^[6]; Valenti, S.; Arcavi, I. ^[7]; Banerjee, D. P. K.; Venkataraman, V.; Joshi, V.; Ashok, N. M. ^[8]; others, and

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1. The Oskar Klein Centre, Physics Department, Stockholm University, Albanova University Center, SE 106 91 Stockholm (Sweden)
2. Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States)
3. Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)
4. Computational Cosmology Center, Computational Research Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 50B-4206, Berkeley, CA 94720 (United States)
5. Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100 (Israel)
6. CNRS, Institut d'Astrophysique de Paris (IAP) and University P. et M. Curie (Paris 6), 98bis Boulevard Arago, F-75014 Paris (France)
7. Las Cumbres Observatory Global Telescope Network, 6740 Corona Drive, Suite 102, Goleta, CA 93117 (United States)
8. Physical Research Laboratory, Ahmedabad 380 009 (India)

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{sub 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.

• OSTI ID: 22365962
• Journal Information: Astrophysical Journal Letters, Vol. 784, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION
COSMIC DUST
DETECTION
DIAGRAMS
EMISSION SPECTRA
EMISSION SPECTROSCOPY
GALAXIES
IMAGES
RESOLUTION
SUPERNOVAE
TELESCOPES
TRANSIENTS
VELOCITY
VISIBLE RADIATION