The University of Southampton
University of Southampton Institutional Repository

The hydrogen-poor superluminous supernova iPTF 13ajg and its host galaxy in absorption and emission

The hydrogen-poor superluminous supernova iPTF 13ajg and its host galaxy in absorption and emission
The hydrogen-poor superluminous supernova iPTF 13ajg and its host galaxy in absorption and emission
We present imaging and spectroscopy of a hydrogen-poor superluminous supernova (SLSN) discovered by the intermediate Palomar Transient Factory, iPTF 13ajg. At a redshift of z = 0.7403, derived from narrow absorption lines, iPTF 13ajg peaked at an absolute magnitude of Mu,AB = –22.5, one of the most luminous supernovae to date. The observed bolometric peak luminosity of iPTF 13ajg is 3.2 × 1044 erg s–1, while the estimated total radiated energy is 1.3 × 1051 erg. We detect narrow absorption lines of Mg I, Mg II, and Fe II, associated with the cold interstellar medium in the host galaxy, at two different epochs with X-shooter at the Very Large Telescope. From Voigt profile fitting, we derive the column densities log N(Mg I) =11.94 ± 0.06, log N(Mg II) =14.7 ± 0.3, and log N(Fe II) =14.25 ± 0.10. These column densities, as well as the Mg I and Mg II equivalent widths of a sample of hydrogen-poor SLSNe taken from the literature, are at the low end of those derived for gamma-ray bursts (GRBs) whose progenitors are also thought to be massive stars. This suggests that the environments of hydrogen-poor SLSNe and GRBs are different. From the nondetection of Fe II fine-structure absorption lines, we derive a lower limit on the distance between the supernova and the narrow-line absorbing gas of 50 pc. The neutral gas responsible for the absorption in iPTF 13ajg exhibits a single narrow component with a low velocity width, ΔV = 76 km s–1, indicating a low-mass host galaxy. No host galaxy emission lines are detected, leading to an upper limit on the unobscured star formation rate (SFR) of SFR[O II] < 0.07 Myr-1. Late-time imaging shows the iPTF 13ajg host galaxy to be faint, with gAB ~ 27.0 and RAB ≥ 26.0 mag, corresponding to MB, Vega >~ –17.7 mag.
0004-637X
1-15
Vreeswijk, Paul M.
c61e4d0e-a12c-43b1-a4f4-77ac6e023002
Savaglio, Sandra
5abdadd4-609c-444a-814c-e76f5551c2f4
Gal-Yam, Avishay
80aa0bba-7626-4e69-bb9b-8db7bf0cc159
De Cia, Annalisa
6e6fc309-2cbc-4bc7-8bcc-9d7df41cc258
Quimby, Robert M.
e7dab437-ae0e-467a-8cad-99d6359e4ecf
Sullivan, Mark
2f31f9fa-8e79-4b35-98e2-0cb38f503850
Cenko, S. Bradley
e7a32a77-161f-4df3-8563-1b3fd474410b
Perley, Daniel A.
1461c78a-63ce-4d55-90bd-fb15c122368e
Filippenko, Alexei V.
132ab07b-9e82-48e6-af6e-46cd8e74a43d
Clubb, Kelsey I.
a221ca5c-0b09-49d0-b76c-294bd76a3f0f
Taddia, Francesco
358ffdde-121b-4369-a278-3a14250aebaa
Sollerman, Jesper
f4d66eed-cee5-433a-9533-8f12816f2eaf
Leloudas, Giorgos
a49914b6-26c7-4494-b8c0-107461f35b1d
Arcavi, Iair
1c50ac5e-af89-480c-9f4a-6801d3430078
Rubin, Adam
6702dccf-3384-42b6-ad08-4dbb39bad2aa
Kasliwal, Mansi M.
b6c5b585-867a-49a8-81cd-aa992b48d078
Cao, Yi
2595c336-1747-49de-ac6f-d717828ff6e9
Yaron, Ofer
bba3cfb6-03cd-4709-95db-a8a230f07d6a
Tal, David
bd1ce169-2db4-46e5-9972-d2cb85adfab5
Ofek, Eran O.
fd29f2ea-46bf-4629-b4c0-d264b6bd481c
Capone, John
aeaee670-c5bf-404e-a56c-8f3f838a041c
Kutyrev, Alexander S.
6b9e8960-92de-461a-9ca3-ff1c58dc9515
Toy, Vicki
24ca54ba-1aae-449b-bc1b-19c8ff7be717
Nugent, Peter E.
f98e37c2-aa8f-455b-8eb9-5b350046a2e0
Laher, Russ
6a019647-8cf8-4d40-a541-f2bcdcea4cb1
Surace, Jason
5ed4d52a-2b90-4b0f-ba42-13045011a993
Kulkarni, Shrinivas R.
64b01016-7934-47db-8d4c-40646ebff394
Vreeswijk, Paul M.
c61e4d0e-a12c-43b1-a4f4-77ac6e023002
Savaglio, Sandra
5abdadd4-609c-444a-814c-e76f5551c2f4
Gal-Yam, Avishay
80aa0bba-7626-4e69-bb9b-8db7bf0cc159
De Cia, Annalisa
6e6fc309-2cbc-4bc7-8bcc-9d7df41cc258
Quimby, Robert M.
e7dab437-ae0e-467a-8cad-99d6359e4ecf
Sullivan, Mark
2f31f9fa-8e79-4b35-98e2-0cb38f503850
Cenko, S. Bradley
e7a32a77-161f-4df3-8563-1b3fd474410b
Perley, Daniel A.
1461c78a-63ce-4d55-90bd-fb15c122368e
Filippenko, Alexei V.
132ab07b-9e82-48e6-af6e-46cd8e74a43d
Clubb, Kelsey I.
a221ca5c-0b09-49d0-b76c-294bd76a3f0f
Taddia, Francesco
358ffdde-121b-4369-a278-3a14250aebaa
Sollerman, Jesper
f4d66eed-cee5-433a-9533-8f12816f2eaf
Leloudas, Giorgos
a49914b6-26c7-4494-b8c0-107461f35b1d
Arcavi, Iair
1c50ac5e-af89-480c-9f4a-6801d3430078
Rubin, Adam
6702dccf-3384-42b6-ad08-4dbb39bad2aa
Kasliwal, Mansi M.
b6c5b585-867a-49a8-81cd-aa992b48d078
Cao, Yi
2595c336-1747-49de-ac6f-d717828ff6e9
Yaron, Ofer
bba3cfb6-03cd-4709-95db-a8a230f07d6a
Tal, David
bd1ce169-2db4-46e5-9972-d2cb85adfab5
Ofek, Eran O.
fd29f2ea-46bf-4629-b4c0-d264b6bd481c
Capone, John
aeaee670-c5bf-404e-a56c-8f3f838a041c
Kutyrev, Alexander S.
6b9e8960-92de-461a-9ca3-ff1c58dc9515
Toy, Vicki
24ca54ba-1aae-449b-bc1b-19c8ff7be717
Nugent, Peter E.
f98e37c2-aa8f-455b-8eb9-5b350046a2e0
Laher, Russ
6a019647-8cf8-4d40-a541-f2bcdcea4cb1
Surace, Jason
5ed4d52a-2b90-4b0f-ba42-13045011a993
Kulkarni, Shrinivas R.
64b01016-7934-47db-8d4c-40646ebff394

Vreeswijk, Paul M., Savaglio, Sandra, Gal-Yam, Avishay, De Cia, Annalisa, Quimby, Robert M., Sullivan, Mark, Cenko, S. Bradley, Perley, Daniel A., Filippenko, Alexei V., Clubb, Kelsey I., Taddia, Francesco, Sollerman, Jesper, Leloudas, Giorgos, Arcavi, Iair, Rubin, Adam, Kasliwal, Mansi M., Cao, Yi, Yaron, Ofer, Tal, David, Ofek, Eran O., Capone, John, Kutyrev, Alexander S., Toy, Vicki, Nugent, Peter E., Laher, Russ, Surace, Jason and Kulkarni, Shrinivas R. (2014) The hydrogen-poor superluminous supernova iPTF 13ajg and its host galaxy in absorption and emission. The Astrophysical Journal, 797 (24), 1-15. (doi:10.1088/0004-637X/797/1/24).

Record type: Article

Abstract

We present imaging and spectroscopy of a hydrogen-poor superluminous supernova (SLSN) discovered by the intermediate Palomar Transient Factory, iPTF 13ajg. At a redshift of z = 0.7403, derived from narrow absorption lines, iPTF 13ajg peaked at an absolute magnitude of Mu,AB = –22.5, one of the most luminous supernovae to date. The observed bolometric peak luminosity of iPTF 13ajg is 3.2 × 1044 erg s–1, while the estimated total radiated energy is 1.3 × 1051 erg. We detect narrow absorption lines of Mg I, Mg II, and Fe II, associated with the cold interstellar medium in the host galaxy, at two different epochs with X-shooter at the Very Large Telescope. From Voigt profile fitting, we derive the column densities log N(Mg I) =11.94 ± 0.06, log N(Mg II) =14.7 ± 0.3, and log N(Fe II) =14.25 ± 0.10. These column densities, as well as the Mg I and Mg II equivalent widths of a sample of hydrogen-poor SLSNe taken from the literature, are at the low end of those derived for gamma-ray bursts (GRBs) whose progenitors are also thought to be massive stars. This suggests that the environments of hydrogen-poor SLSNe and GRBs are different. From the nondetection of Fe II fine-structure absorption lines, we derive a lower limit on the distance between the supernova and the narrow-line absorbing gas of 50 pc. The neutral gas responsible for the absorption in iPTF 13ajg exhibits a single narrow component with a low velocity width, ΔV = 76 km s–1, indicating a low-mass host galaxy. No host galaxy emission lines are detected, leading to an upper limit on the unobscured star formation rate (SFR) of SFR[O II] < 0.07 Myr-1. Late-time imaging shows the iPTF 13ajg host galaxy to be faint, with gAB ~ 27.0 and RAB ≥ 26.0 mag, corresponding to MB, Vega >~ –17.7 mag.

Text
1409.8287v1.pdf - Accepted Manuscript
Download (2MB)

More information

Accepted/In Press date: 23 September 2014
e-pub ahead of print date: 21 November 2014
Published date: December 2014
Organisations: Astronomy Group

Identifiers

Local EPrints ID: 394591
URI: https://eprints.soton.ac.uk/id/eprint/394591
ISSN: 0004-637X
PURE UUID: cb48ad9d-1e44-4113-8431-80ba59511c21
ORCID for Mark Sullivan: ORCID iD orcid.org/0000-0001-9053-4820

Catalogue record

Date deposited: 20 May 2016 15:04
Last modified: 02 Aug 2018 00:28

Export record

Altmetrics

Contributors

Author: Paul M. Vreeswijk
Author: Sandra Savaglio
Author: Avishay Gal-Yam
Author: Annalisa De Cia
Author: Robert M. Quimby
Author: Mark Sullivan ORCID iD
Author: S. Bradley Cenko
Author: Daniel A. Perley
Author: Alexei V. Filippenko
Author: Kelsey I. Clubb
Author: Francesco Taddia
Author: Jesper Sollerman
Author: Giorgos Leloudas
Author: Iair Arcavi
Author: Adam Rubin
Author: Mansi M. Kasliwal
Author: Yi Cao
Author: Ofer Yaron
Author: David Tal
Author: Eran O. Ofek
Author: John Capone
Author: Alexander S. Kutyrev
Author: Vicki Toy
Author: Peter E. Nugent
Author: Russ Laher
Author: Jason Surace
Author: Shrinivas R. Kulkarni

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×