NGC 2770: a supernova Ib factory ?

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NGC 2770 : a supernova Ib factory ? / Thöne, Christina C.; Michalowski, Michal; Leloudas, Giorgos; Cox, Nick L. J.; Fynbo, Johan P. U.; Sollerman, Jesper; Hjorth, Jens; Vreeswijk, Paul M.

In: Astrophysical Journal, Vol. 698, No. 2, 2009, p. 1307-1320.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Thöne, CC, Michalowski, M, Leloudas, G, Cox, NLJ, Fynbo, JPU, Sollerman, J, Hjorth, J & Vreeswijk, PM 2009, 'NGC 2770: a supernova Ib factory ?', Astrophysical Journal, vol. 698, no. 2, pp. 1307-1320. https://doi.org/10.1088/0004-637X/698/2/1307

APA

Thöne, C. C., Michalowski, M., Leloudas, G., Cox, N. L. J., Fynbo, J. P. U., Sollerman, J., ... Vreeswijk, P. M. (2009). NGC 2770: a supernova Ib factory ? Astrophysical Journal, 698(2), 1307-1320. https://doi.org/10.1088/0004-637X/698/2/1307

Vancouver

Thöne CC, Michalowski M, Leloudas G, Cox NLJ, Fynbo JPU, Sollerman J et al. NGC 2770: a supernova Ib factory ? Astrophysical Journal. 2009;698(2):1307-1320. https://doi.org/10.1088/0004-637X/698/2/1307

Author

Thöne, Christina C. ; Michalowski, Michal ; Leloudas, Giorgos ; Cox, Nick L. J. ; Fynbo, Johan P. U. ; Sollerman, Jesper ; Hjorth, Jens ; Vreeswijk, Paul M. / NGC 2770 : a supernova Ib factory ?. In: Astrophysical Journal. 2009 ; Vol. 698, No. 2. pp. 1307-1320.

Bibtex

@article{be3d9f2069ff11de8bc9000ea68e967b,
title = "NGC 2770: a supernova Ib factory ?",
abstract = "NGC 2770 has been the host of three supernovae (SNe) of Type Ib during the last ten years, SN 1999eh, SN 2007uy, and SN 2008D. SN 2008D attracted special attention due to the serendipitous discovery of an associated X-ray transient. In this paper, we study the properties of NGC 2770 and specifically the three SN sites to investigate whether this galaxy is in any way peculiar to cause a high frequency of SNe Ib. We model the global spectral energy distribution of the galaxy from broadband data and derive a star formation and SN rate comparable to the values of the Milky Way. We further study the galaxy using longslit spectroscopy covering the major axis and the three SN sites. From the spectroscopic study we find subsolar metallicities for the SN sites, a high extinction and a moderate star formation rate. In a high-resolution spectrum, we also detect diffuse interstellar bands in the line of sight toward SN 2008D. A comparison of NGC 2770 to the global properties of a galaxy sample with high SN occurrence (>= 3 SN in the last 100 years) suggests that NGC 2770 is not particularly destined to produce such an enhancement of observed SNe. Its properties are also very different from gamma-ray burst host galaxies. Statistical considerations on SN Ib detection rates give a probability of ~1.5{\%} to find a galaxy with three Ib SNe detected in ten years. The high number of rare Ib SNe in this galaxy is therefore likely to be a coincidence rather than special properties of the galaxy itself. NGC 2770 has a small irregular companion, NGC 2770B, which is highly star-forming, has a very low mass and one of the lowest metallicities detected in the nearby universe as derived from longslit spectroscopy. In the most metal poor part, we even detect Wolf-Rayet (WR) features, which is at odds with most current models of WR stars which require high metallicities. Based on observations with the Nordic Optical Telescope, ESO proposal 080.D-0526, the GALEX and NED databases.",
author = "Th{\"o}ne, {Christina C.} and Michal Michalowski and Giorgos Leloudas and Cox, {Nick L. J.} and Fynbo, {Johan P. U.} and Jesper Sollerman and Jens Hjorth and Vreeswijk, {Paul M.}",
note = "Keywords: galaxies: individual: NGC 2770; galaxies: ISM",
year = "2009",
doi = "10.1088/0004-637X/698/2/1307",
language = "English",
volume = "698",
pages = "1307--1320",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "2",

}

RIS

TY - JOUR

T1 - NGC 2770

T2 - a supernova Ib factory ?

AU - Thöne, Christina C.

AU - Michalowski, Michal

AU - Leloudas, Giorgos

AU - Cox, Nick L. J.

AU - Fynbo, Johan P. U.

AU - Sollerman, Jesper

AU - Hjorth, Jens

AU - Vreeswijk, Paul M.

N1 - Keywords: galaxies: individual: NGC 2770; galaxies: ISM

PY - 2009

Y1 - 2009

N2 - NGC 2770 has been the host of three supernovae (SNe) of Type Ib during the last ten years, SN 1999eh, SN 2007uy, and SN 2008D. SN 2008D attracted special attention due to the serendipitous discovery of an associated X-ray transient. In this paper, we study the properties of NGC 2770 and specifically the three SN sites to investigate whether this galaxy is in any way peculiar to cause a high frequency of SNe Ib. We model the global spectral energy distribution of the galaxy from broadband data and derive a star formation and SN rate comparable to the values of the Milky Way. We further study the galaxy using longslit spectroscopy covering the major axis and the three SN sites. From the spectroscopic study we find subsolar metallicities for the SN sites, a high extinction and a moderate star formation rate. In a high-resolution spectrum, we also detect diffuse interstellar bands in the line of sight toward SN 2008D. A comparison of NGC 2770 to the global properties of a galaxy sample with high SN occurrence (>= 3 SN in the last 100 years) suggests that NGC 2770 is not particularly destined to produce such an enhancement of observed SNe. Its properties are also very different from gamma-ray burst host galaxies. Statistical considerations on SN Ib detection rates give a probability of ~1.5% to find a galaxy with three Ib SNe detected in ten years. The high number of rare Ib SNe in this galaxy is therefore likely to be a coincidence rather than special properties of the galaxy itself. NGC 2770 has a small irregular companion, NGC 2770B, which is highly star-forming, has a very low mass and one of the lowest metallicities detected in the nearby universe as derived from longslit spectroscopy. In the most metal poor part, we even detect Wolf-Rayet (WR) features, which is at odds with most current models of WR stars which require high metallicities. Based on observations with the Nordic Optical Telescope, ESO proposal 080.D-0526, the GALEX and NED databases.

AB - NGC 2770 has been the host of three supernovae (SNe) of Type Ib during the last ten years, SN 1999eh, SN 2007uy, and SN 2008D. SN 2008D attracted special attention due to the serendipitous discovery of an associated X-ray transient. In this paper, we study the properties of NGC 2770 and specifically the three SN sites to investigate whether this galaxy is in any way peculiar to cause a high frequency of SNe Ib. We model the global spectral energy distribution of the galaxy from broadband data and derive a star formation and SN rate comparable to the values of the Milky Way. We further study the galaxy using longslit spectroscopy covering the major axis and the three SN sites. From the spectroscopic study we find subsolar metallicities for the SN sites, a high extinction and a moderate star formation rate. In a high-resolution spectrum, we also detect diffuse interstellar bands in the line of sight toward SN 2008D. A comparison of NGC 2770 to the global properties of a galaxy sample with high SN occurrence (>= 3 SN in the last 100 years) suggests that NGC 2770 is not particularly destined to produce such an enhancement of observed SNe. Its properties are also very different from gamma-ray burst host galaxies. Statistical considerations on SN Ib detection rates give a probability of ~1.5% to find a galaxy with three Ib SNe detected in ten years. The high number of rare Ib SNe in this galaxy is therefore likely to be a coincidence rather than special properties of the galaxy itself. NGC 2770 has a small irregular companion, NGC 2770B, which is highly star-forming, has a very low mass and one of the lowest metallicities detected in the nearby universe as derived from longslit spectroscopy. In the most metal poor part, we even detect Wolf-Rayet (WR) features, which is at odds with most current models of WR stars which require high metallicities. Based on observations with the Nordic Optical Telescope, ESO proposal 080.D-0526, the GALEX and NED databases.

U2 - 10.1088/0004-637X/698/2/1307

DO - 10.1088/0004-637X/698/2/1307

M3 - Journal article

VL - 698

SP - 1307

EP - 1320

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

ER -

ID: 13012468