Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

The rise of SN 2014J in the nearby galaxy M82

Goobar, A and Johansson, J and Amanullah, R and Cao, Y and Perley, DA and Kasliwal, MM and Ferretti, R and Nugent, PE and Harris, C and Gal-Yam, A and Ofek, EO and Tendulkar, SP and Dennefeld, M and Valenti, S and Arcavi, I and Banerjee, DPK and Venkataraman, V and Joshi, V and Ashok, NM and Cenko, SB and Diaz, RF and Fremling, C and Horesh, A and Howell, DA and Kulkarni, SR and Papadogiannakis, S and Petrushevska, T and Sand, D and Sollerman, J and Stanishev, V and Bloom, JS and Surace, J and Dupuy, TJ and Liu, MC (2014) The rise of SN 2014J in the nearby galaxy M82. The Astrophysical Journal Letters, 784 (1). ISSN 2041-8205

[img] Text
Goobar_2014_ApJL_784_L12.pdf - Published Version

Download (2MB)

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, RV ≲ 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. © 2014. The American Astronomical Society. All rights reserved.

Item Type: Article
Uncontrolled Keywords: 0201 Astronomical And Space Sciences
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: American Astronomical Society
Date Deposited: 18 May 2017 10:23
Last Modified: 12 Sep 2017 00:24
DOI or Identification number: 10.1088/2041-8205/784/1/L12
URI: http://researchonline.ljmu.ac.uk/id/eprint/6472

Actions (login required)

View Item View Item