Recent star formation in nearby galaxies from Galaxy Evolution Explorer imaging:: M101 and M51

被引：43

作者：

Bianchi, L

Thilker, DA

Burgarella, D

Friedman, PG

Hoopes, CG

Boissier, S

de Paz, AG

Barlow, TA

Byun, YI

Donas, J

Forster, K

Heckman, TM

Jelinsky, PN

Lee, YW

Madore, BF

Malina, RF

Martin, DC

Milliard, B

Morrissey, P

Neff, SG

Rich, RM

Schiminovich, D

Siegmund, OHW

Small, T

Szalay, AS

Welsh, BY

Wyder, TK

机构：

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

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

[3] CALTECH, Pasadena, CA 91125 USA

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

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

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

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

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

来源：

ASTROPHYSICAL JOURNAL | 2005年 / 619卷 / 01期

关键词：

galaxies; individual; (M51; M101); galaxies : star clusters; ultraviolet : galaxies;

D O I：

10.1086/422685

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Galaxy Evolution Explorer (GALEX) Nearby Galaxies Survey is providing deep far-UV and near-UV imaging for a representative sample of galaxies in the local universe. We present early results for M51 and M101, from GALEX UV imaging and Sloan Digital Sky Survey optical data in five bands. The multiband photometry of compact stellar complexes in M101 is compared to population synthesis models, to derive ages, reddening, reddening-corrected luminosities, and current/initial masses. The GALEX UV photometry provides a complete census of young compact complexes on a approximate to160 pc scale. A galactocentric gradient of the far-UV/near-UV color indicates younger stellar populations toward the outer parts of the galaxy disks, the effect being more pronounced in M101 than in M51.

引用

页码：L71 / L74

页数：4

共 20 条

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