Ultraviolet morphology and star formation in the tidal tails of NGC 4038/39

被引：53

作者：

Hibbard, JE

Bianchi, L

Thilker, DA

Rich, RM

Schiminovich, D

Xu, CK

Neff, SG

Seibert, M

Lauger, S

Burgarella, D

Barlow, TA

Byun, YI

Donas, J

Forster, K

Friedman, PG

Heckman, TM

Jelinsky, PN

Lee, YW

Madore, BF

Malina, RF

Martin, DC

Milliard, B

Morrissey, P

Siegmund, OHW

Small, T

Szalay, AS

Welsh, BY

Wyder, TK

机构：

[1] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[2] Johns Hopkins Univ, Ctr Astrophys Sci, Baltimore, MD 21218 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] CALTECH, Pasadena, CA 91125 USA

[5] Columbia Univ, Dept Astron, New York, NY 10025 USA

[6] NASA, Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA

[7] Lab Astrophys Marseille, F-13376 Marseille 12, France

[8] Yonsei Univ, Ctr Space Astrophys, Seoul 120749, South Korea

[9] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[10] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[11] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA

来源：

ASTROPHYSICAL JOURNAL | 2005年 / 619卷 / 01期

关键词：

galaxies; individual; (NGC; 4038; NGC; 4039); galaxies : interactions; galaxies : ISM; galaxies : starburst; intergalactic medium; ultraviolet : galaxies;

D O I：

10.1086/423244

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present Galaxy Evolution Explorer far-ultraviolet (1530 Angstrom) and near-ultraviolet (2310 Angstrom) observations of the archetypal merging system NGC 4038/39, "the Antennae." Both tails are relatively bright in the UV, especially in the vicinity of the tidal dwarf galaxy candidates at the end of the southern tail. The UV light generally falls within the optically delineated tails, although the UV light is considerably more structured, with a remarkably similar morphology to the tidal H I. The UV colors suggest that there has been continuing star formation within the tidal tails, even outside the previously studied tidal dwarf regions. Within the inner disk regions, there are interesting UV features that appear to be related to the extended soft X-ray loops and halo recently discovered by Chandra.

引用

页码：L87 / L90

页数：4

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