Extended tidal structure in two Lyα-emitting starburst galaxies

John M. Cannon; Evan D. Skillman; Daniel Kunth; Claus Leitherer; Miguel Mas-Hesse; Göran Östlin; Artashes Petrosian

doi:10.1086/420868

Extended tidal structure in two Lyα-emitting starburst galaxies

John M. Cannon, Evan D. Skillman, Daniel Kunth, Claus Leitherer, Miguel Mas-Hesse, Göran Östlin, Artashes Petrosian

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

We present new Very Large Array (VLA) C-configuration H I imaging of the Lyα-emitting starburst galaxies Toi 1924-416 and IRAS 08339+6517. The effective resolution probes neutral gas structures larger than 4,7 kpc in Toi 1924-416 and larger than 8.1 kpc in IRAS 08339+6517. Both systems are revealed to be tidally interacting: Tol 1924-416 with ESO 338-IG04B (6′.6 = 72 kpc minimum separation), and IRAS 08339+6517 with 2MASX J08380769+6508579 (2′.4 = 56 kpc minimum separation). The H I emission is extended in these systems, with tidal tails and debris between the target galaxies and their companions. Since Lyα emission has been detected from both of these primary systems, these observations suggest that the geometry of the interstellar medium is one of the factors affecting the escape fraction of Lyα emission from starburst environments. Furthermore, these observations argue for the importance of interactions in triggering massive star formation events.

Original language	English (US)
Pages (from-to)	768-771
Number of pages	4
Journal	Astrophysical Journal
Volume	608
Issue number	2 I
DOIs	https://doi.org/10.1086/420868
State	Published - Jun 20 2004

Keywords

Galaxies: interactions
Galaxies: starburst

Access

10.1086/420868

OpenUrl availability

Full text

Cite this

@article{360f202826cc44028a9102c00b13378a,

title = "Extended tidal structure in two Lyα-emitting starburst galaxies",

abstract = "We present new Very Large Array (VLA) C-configuration H I imaging of the Lyα-emitting starburst galaxies Toi 1924-416 and IRAS 08339+6517. The effective resolution probes neutral gas structures larger than 4,7 kpc in Toi 1924-416 and larger than 8.1 kpc in IRAS 08339+6517. Both systems are revealed to be tidally interacting: Tol 1924-416 with ESO 338-IG04B (6′.6 = 72 kpc minimum separation), and IRAS 08339+6517 with 2MASX J08380769+6508579 (2′.4 = 56 kpc minimum separation). The H I emission is extended in these systems, with tidal tails and debris between the target galaxies and their companions. Since Lyα emission has been detected from both of these primary systems, these observations suggest that the geometry of the interstellar medium is one of the factors affecting the escape fraction of Lyα emission from starburst environments. Furthermore, these observations argue for the importance of interactions in triggering massive star formation events.",

keywords = "Galaxies: interactions, Galaxies: starburst",

author = "Cannon, {John M.} and Skillman, {Evan D.} and Daniel Kunth and Claus Leitherer and Miguel Mas-Hesse and G{\"o}ran {\"O}stlin and Artashes Petrosian",

year = "2004",

month = jun,

day = "20",

doi = "10.1086/420868",

language = "English (US)",

volume = "608",

pages = "768--771",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2 I",

}

TY - JOUR

T1 - Extended tidal structure in two Lyα-emitting starburst galaxies

AU - Cannon, John M.

AU - Skillman, Evan D.

AU - Kunth, Daniel

AU - Leitherer, Claus

AU - Mas-Hesse, Miguel

AU - Östlin, Göran

AU - Petrosian, Artashes

PY - 2004/6/20

Y1 - 2004/6/20

N2 - We present new Very Large Array (VLA) C-configuration H I imaging of the Lyα-emitting starburst galaxies Toi 1924-416 and IRAS 08339+6517. The effective resolution probes neutral gas structures larger than 4,7 kpc in Toi 1924-416 and larger than 8.1 kpc in IRAS 08339+6517. Both systems are revealed to be tidally interacting: Tol 1924-416 with ESO 338-IG04B (6′.6 = 72 kpc minimum separation), and IRAS 08339+6517 with 2MASX J08380769+6508579 (2′.4 = 56 kpc minimum separation). The H I emission is extended in these systems, with tidal tails and debris between the target galaxies and their companions. Since Lyα emission has been detected from both of these primary systems, these observations suggest that the geometry of the interstellar medium is one of the factors affecting the escape fraction of Lyα emission from starburst environments. Furthermore, these observations argue for the importance of interactions in triggering massive star formation events.

AB - We present new Very Large Array (VLA) C-configuration H I imaging of the Lyα-emitting starburst galaxies Toi 1924-416 and IRAS 08339+6517. The effective resolution probes neutral gas structures larger than 4,7 kpc in Toi 1924-416 and larger than 8.1 kpc in IRAS 08339+6517. Both systems are revealed to be tidally interacting: Tol 1924-416 with ESO 338-IG04B (6′.6 = 72 kpc minimum separation), and IRAS 08339+6517 with 2MASX J08380769+6508579 (2′.4 = 56 kpc minimum separation). The H I emission is extended in these systems, with tidal tails and debris between the target galaxies and their companions. Since Lyα emission has been detected from both of these primary systems, these observations suggest that the geometry of the interstellar medium is one of the factors affecting the escape fraction of Lyα emission from starburst environments. Furthermore, these observations argue for the importance of interactions in triggering massive star formation events.

KW - Galaxies: interactions

KW - Galaxies: starburst

UR - http://www.scopus.com/inward/record.url?scp=3142721348&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3142721348&partnerID=8YFLogxK

U2 - 10.1086/420868

DO - 10.1086/420868

M3 - Article

AN - SCOPUS:3142721348

SN - 0004-637X

VL - 608

SP - 768

EP - 771

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 I

ER -

Extended tidal structure in two Lyα-emitting starburst galaxies

Abstract

Keywords

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this