THE ACS NEARBY GALAXY SURVEY TREASURY. I. THE STAR FORMATION HISTORY OF THE M81 OUTER DISK

被引：57

作者：

Williams, Benjamin F. ^{[1
]}

Dalcanton, Julianne J. ^{[1
]}

Seth, Anil C. ^{[2
]}

Weisz, Daniel ^{[3
]}

Dolphin, Andrew ^{[4
]}

Skillman, Evan ^{[3
]}

Harris, Jason ^{[5
]}

Holtzman, Jon ^{[6
]}

Girardi, Leo ^{[7
]}

De Jong, Roelof S. ^{[8
]}

Olsen, Knut ^{[9
]}

Cole, Andrew ^{[10
]}

Gallart, Carme ^{[11
]}

Gogarten, Stephanie M. ^{[1
]}

Hidalgo, Sebastian L. ^{[3
]}

Mateo, Mario ^{[12
]}

Rosema, Keith ^{[1
]}

Stetson, Peter B. ^{[13
]}

Quinn, Thomas ^{[1
]}

机构：

[1] Univ Washington, Dept Astron, Seattle, WA 98195 USA

[2] Harvard Smithsonian Ctr Astrophys, Ctr Astrophys Fellow, Cambridge, MA 02138 USA

[3] Univ Minnesota, Dept Astron, Minneapolis, MN 55455 USA

[4] Raytheon Co, Tucson, AZ 85706 USA

[5] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[6] New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA

[7] Inst Nazl Astrofis, Osservatorio Astron Padova, I-35122 Padua, Italy

[8] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[9] Natl Opt Astron Observ, Cerro Tololo Inter Amer Observ, La Serena, Chile

[10] Univ Tasmania, Sch Math & Phys, Hobart, Tas, Australia

[11] Inst Astrofis Canarias, Tenerife 38200, Spain

[12] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[13] Natl Res Council Canada, Herzberg Inst Astrophys, Dominion Astrophys Observ, Victoria, BC V9E 2E7, Canada

来源：

ASTRONOMICAL JOURNAL | 2009年 / 137卷 / 01期

关键词：

galaxies: individual (M81); galaxies: stellar content; galaxies: spiral; galaxies: evolution; HUBBLE-SPACE-TELESCOPE; DIGITAL SKY SURVEY; EXTRAGALACTIC DISTANCE SCALE; COLOR-MAGNITUDE DIAGRAMS; TULLY-FISHER RELATIONS; SPIRAL DENSITY WAVES; GIANT BRANCH BUMP; STELLAR POPULATIONS; HORIZONTAL-BRANCH; STRUCTURAL PARAMETERS;

D O I：

10.1088/0004-6256/137/1/419

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Advanced Camera for Surveys (ACS) Nearby Galaxy Survey Treasury is a large Hubble Space Telescope (HST)/ACS treasury program to obtain resolved stellar photometry for a volume-limited sample of galaxies out to 4 Mpc. As part of this program, we have obtained deep ACS imaging of a field in the outer disk of the large spiral galaxy M81. The field contains the outskirts of a spiral arm as well as an area containing no current star formation. Our imaging results in a color-magnitude diagram (CMD) reaching to m(F814W) = 28.8 and m(F606W) = 29.5, one magnitude fainter than the red clump. Through detailed modeling of the full CMD, we quantify the age and metallicity distribution of the stellar populations contained in the field. The mean metallicity in the field is -1 < [M/H] < 0 and only a small fraction of stars have ages less than or similar to 1 Gyr. The results show that most of the stars in this outer disk field were formed by z similar to 1 and that the arm structure at this radius has a lifetime of greater than or similar to 100 Myr. We discuss the measured evolution of the M81 disk in the context of surveys of high redshift disk galaxies and deep stellar photometry of other nearby galaxies. All of these indicate that massive spiral disks are mostly formed by z similar to 1 and that they have experienced rapid metal enrichment.

引用

页码：419 / 430

页数：12

共 82 条

[31] Forming disc galaxies in ΛCDM simulations [J].

Governato, F. ;

Willman, B. ;

Mayer, L. ;

Brooks, A. ;

Stinson, G. ;

Valenzuela, O. ;

Wadsley, J. ;

Quinn, T. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 374 (04) :1479-1494

[32] A method for determining the star formation history of a mixed stellar population [J].

Harris, J ;

Zaritsky, D .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2001, 136 (01) :25-40

[33] Hubble Space Telescope photometry for the halo stars in the Leo elliptical NGC 3377 [J].

Harris, William E. ;

Harris, Gretchen L. H. ;

Layden, Andrew C. ;

Stetson, Peter B. .

ASTRONOMICAL JOURNAL, 2007, 134 (01) :43-55

[34] A NEW AGE CALIBRATOR FOR RED HORIZONTAL BRANCH POPULATIONS [J].

HATZIDIMITRIOU, D .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1991, 251 (04) :545-554

[35]

HUCHRA J, 2004, HST PROPOSAL, P10250

[36] Tracing spiral density waves in M81 [J].

Kendall, S. ;

Kennicutt, R. C. ;

Clarke, C. ;

Thornley, M. D. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 387 (03) :1007-1020

[37] The K-band galaxy luminosity function [J].

Kochanek, CS ;

Pahre, MA ;

Falco, EE ;

Huchra, JP ;

Mader, J ;

Jarrett, TH ;

Chester, T ;

Cutri, R ;

Schneider, SE .

ASTROPHYSICAL JOURNAL, 2001, 560 (02) :566-579

[38]

Koekemoer A.M., 2002, Proceedings of a Workshop held at the Space Telescope Science Institute, Baltimore, Maryland, October 17 and 18, 2002, P337

[39] Evolution of M81 with exponentially decreasing star formation rate of PEGASE [J].

Li, JL ;

Zhou, X ;

Ma, J ;

Chen, JS .

CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS, 2004, 4 (02) :143-152

[40] Hubble space telescope imaging of the CFRS and LDSS redshift surveys.: II.: Structural parameters and the evolution of disk galaxies to z∼1 [J].

Lilly, S ;

Schade, D ;

Ellis, R ;

Le Fevre, O ;

Brinchmann, J ;

Tresse, L ;

Abraham, R ;

Hammer, F ;

Crampton, D ;

Colless, M ;

Glazebrook, K ;

Mallen-Ornelas, G ;

Broadhurst, T .

ASTROPHYSICAL JOURNAL, 1998, 500 (01) :75-94

← 1 2 3 4 5 6 7 8 9 →