Optical emission from GRB 050709: a short/hard GRB in a star-forming galaxy: A short/hard GRB in a star-forming galaxy

S Covino; D Malesani; GL Israel; P D'Avanzo; LA Antonelli; G Chincarini; D Fugazza; ML Conciatore; M Della Valle; F Fiore; D Guetta; K Hurley; D Lazzati; L Stella; G Tagliaferri; M Vietri; S Campana; DN Burrows; V D'Elia; P Filliatre; N Gehrels; P Goldoni; A Melandri; S Mereghetti; IF Mirabel; A Moretti; J Nousek; PT O'Brien; LJ Pellizza; R Perna; S Piranomonte; P Romano; FM Zerbi

doi:10.1051/0004-6361:200500228

Optical emission from GRB 050709: a short/hard GRB in a star-forming galaxy: A short/hard GRB in a star-forming galaxy

S Covino, D Malesani, GL Israel, P D'Avanzo, LA Antonelli, G Chincarini, D Fugazza, ML Conciatore, M Della Valle, F Fiore, D Guetta, K Hurley, D Lazzati, L Stella, G Tagliaferri, M Vietri, S Campana, DN Burrows, V D'Elia, P FilliatreN Gehrels, P Goldoni, A Melandri, S Mereghetti, IF Mirabel, A Moretti, J Nousek, PT O'Brien, LJ Pellizza, R Perna, S Piranomonte, P Romano, FM Zerbi

Department of Physics

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Abstract

We present optical observations of the short/hard gamma-ray burst GRB 050709, the first such event with an identified optical counterpart. The object is coincident with a weak X-ray source and is located inside a galaxy at redshift z = 0.1606 ± 0.0002. Multiband photometry allowed us to study the broad-band spectral energy distribution. Late-time monitoring places strong limits on any supernova simultaneous with the GRB. The host galaxy is not of early type. Spectra show that the dominant stellar population is relatively young (∼1 Gyr), and that ongoing star formation is present at a level of 2-3 L/L_* M⊙ yr^-1. This is at least 2 orders of magnitude larger than that observed in the elliptical hosts of the short GRB 050509B and GRB 050724. This shows that at least some short GRBs originate in a young population. Short/hard GRB models based on the merger of a binary degenerate system are compatible with the host galaxy characteristics, although there is still the possibility of a connection between young stars and at least a fraction of such events.

Original language	English
Pages (from-to)	L5-L8
Journal	Astronomy and Astrophysics
Volume	447
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361:200500228
State	Published - Feb 2006

Keywords

radiation mechanisms : non-thermal
gamma rays : bursts
gamma rays : individual GRB 050709

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10.1051/0004-6361:200500228

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Covino, S., Malesani, D., Israel, GL., D'Avanzo, P., Antonelli, LA., Chincarini, G., Fugazza, D., Conciatore, ML., Della Valle, M., Fiore, F., Guetta, D., Hurley, K., Lazzati, D., Stella, L., Tagliaferri, G., Vietri, M., Campana, S., Burrows, DN., D'Elia, V., ... Zerbi, FM. (2006). Optical emission from GRB 050709: a short/hard GRB in a star-forming galaxy: A short/hard GRB in a star-forming galaxy. Astronomy and Astrophysics, 447(2), L5-L8. https://doi.org/10.1051/0004-6361:200500228

@article{2ace7caf5553413f92adbaf5e54813b0,

title = "Optical emission from GRB 050709: a short/hard GRB in a star-forming galaxy: A short/hard GRB in a star-forming galaxy",

abstract = "We present optical observations of the short/hard gamma-ray burst GRB 050709, the first such event with an identified optical counterpart. The object is coincident with a weak X-ray source and is located inside a galaxy at redshift z = 0.1606 ± 0.0002. Multiband photometry allowed us to study the broad-band spectral energy distribution. Late-time monitoring places strong limits on any supernova simultaneous with the GRB. The host galaxy is not of early type. Spectra show that the dominant stellar population is relatively young (∼1 Gyr), and that ongoing star formation is present at a level of 2-3 L/L* M⊙ yr-1. This is at least 2 orders of magnitude larger than that observed in the elliptical hosts of the short GRB 050509B and GRB 050724. This shows that at least some short GRBs originate in a young population. Short/hard GRB models based on the merger of a binary degenerate system are compatible with the host galaxy characteristics, although there is still the possibility of a connection between young stars and at least a fraction of such events.",

keywords = "radiation mechanisms : non-thermal, gamma rays : bursts, gamma rays : individual GRB 050709",

author = "S Covino and D Malesani and GL Israel and P D'Avanzo and LA Antonelli and G Chincarini and D Fugazza and ML Conciatore and {Della Valle}, M and F Fiore and D Guetta and K Hurley and D Lazzati and L Stella and G Tagliaferri and M Vietri and S Campana and DN Burrows and V D'Elia and P Filliatre and N Gehrels and P Goldoni and A Melandri and S Mereghetti and IF Mirabel and A Moretti and J Nousek and PT O'Brien and LJ Pellizza and R Perna and S Piranomonte and P Romano and FM Zerbi",

year = "2006",

month = feb,

doi = "10.1051/0004-6361:200500228",

language = "אנגלית",

volume = "447",

pages = "L5--L8",

journal = "Astronomy and Astrophysics",

issn = "1432-0746",

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Covino, S, Malesani, D, Israel, GL, D'Avanzo, P, Antonelli, LA, Chincarini, G, Fugazza, D, Conciatore, ML, Della Valle, M, Fiore, F, Guetta, D, Hurley, K, Lazzati, D, Stella, L, Tagliaferri, G, Vietri, M, Campana, S, Burrows, DN, D'Elia, V, Filliatre, P, Gehrels, N, Goldoni, P, Melandri, A, Mereghetti, S, Mirabel, IF, Moretti, A, Nousek, J, O'Brien, PT, Pellizza, LJ, Perna, R, Piranomonte, S, Romano, P & Zerbi, FM 2006, 'Optical emission from GRB 050709: a short/hard GRB in a star-forming galaxy: A short/hard GRB in a star-forming galaxy', Astronomy and Astrophysics, vol. 447, no. 2, pp. L5-L8. https://doi.org/10.1051/0004-6361:200500228

TY - JOUR

T1 - Optical emission from GRB 050709: a short/hard GRB in a star-forming galaxy

T2 - A short/hard GRB in a star-forming galaxy

AU - Covino, S

AU - Malesani, D

AU - Israel, GL

AU - D'Avanzo, P

AU - Antonelli, LA

AU - Chincarini, G

AU - Fugazza, D

AU - Conciatore, ML

AU - Della Valle, M

AU - Fiore, F

AU - Guetta, D

AU - Hurley, K

AU - Lazzati, D

AU - Stella, L

AU - Tagliaferri, G

AU - Vietri, M

AU - Campana, S

AU - Burrows, DN

AU - D'Elia, V

AU - Filliatre, P

AU - Gehrels, N

AU - Goldoni, P

AU - Melandri, A

AU - Mereghetti, S

AU - Mirabel, IF

AU - Moretti, A

AU - Nousek, J

AU - O'Brien, PT

AU - Pellizza, LJ

AU - Perna, R

AU - Piranomonte, S

AU - Romano, P

AU - Zerbi, FM

PY - 2006/2

Y1 - 2006/2

N2 - We present optical observations of the short/hard gamma-ray burst GRB 050709, the first such event with an identified optical counterpart. The object is coincident with a weak X-ray source and is located inside a galaxy at redshift z = 0.1606 ± 0.0002. Multiband photometry allowed us to study the broad-band spectral energy distribution. Late-time monitoring places strong limits on any supernova simultaneous with the GRB. The host galaxy is not of early type. Spectra show that the dominant stellar population is relatively young (∼1 Gyr), and that ongoing star formation is present at a level of 2-3 L/L* M⊙ yr-1. This is at least 2 orders of magnitude larger than that observed in the elliptical hosts of the short GRB 050509B and GRB 050724. This shows that at least some short GRBs originate in a young population. Short/hard GRB models based on the merger of a binary degenerate system are compatible with the host galaxy characteristics, although there is still the possibility of a connection between young stars and at least a fraction of such events.

AB - We present optical observations of the short/hard gamma-ray burst GRB 050709, the first such event with an identified optical counterpart. The object is coincident with a weak X-ray source and is located inside a galaxy at redshift z = 0.1606 ± 0.0002. Multiband photometry allowed us to study the broad-band spectral energy distribution. Late-time monitoring places strong limits on any supernova simultaneous with the GRB. The host galaxy is not of early type. Spectra show that the dominant stellar population is relatively young (∼1 Gyr), and that ongoing star formation is present at a level of 2-3 L/L* M⊙ yr-1. This is at least 2 orders of magnitude larger than that observed in the elliptical hosts of the short GRB 050509B and GRB 050724. This shows that at least some short GRBs originate in a young population. Short/hard GRB models based on the merger of a binary degenerate system are compatible with the host galaxy characteristics, although there is still the possibility of a connection between young stars and at least a fraction of such events.

KW - radiation mechanisms : non-thermal

KW - gamma rays : bursts

KW - gamma rays : individual GRB 050709

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U2 - 10.1051/0004-6361:200500228

DO - 10.1051/0004-6361:200500228

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SN - 1432-0746

VL - 447

SP - L5-L8

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

Optical emission from GRB 050709: a short/hard GRB in a star-forming galaxy: A short/hard GRB in a star-forming galaxy

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Keywords

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