LEGACY EXTRAGALACTIC UV SURVEY (LEGUS) WITH THE HUBBLE SPACE TELESCOPE. I. SURVEY DESCRIPTION

被引：181

作者：

Calzetti, D. ^{[1
]}

Lee, J. C. ^{[2
]}

Sabbi, E. ^{[2
]}

Adamo, A. ^{[3
]}

Smith, L. J. ^{[4
]}

Andrews, J. E. ^{[1
,5
]}

Ubeda, L. ^{[2
]}

Bright, S. N. ^{[2
]}

Thilker, D. ^{[6
]}

Aloisi, A. ^{[2
]}

Brown, T. M. ^{[2
]}

Chandar, R. ^{[7
]}

Christian, C. ^{[2
]}

Cignoni, M. ^{[2
]}

Clayton, G. C. ^{[8
]}

da Silva, R. ^{[9
]}

de Mink, S. E. ^{[10
,11
,12
]}

Dobbs, C. ^{[13
]}

Elmegreen, B. G. ^{[14
]}

Elmegreen, D. M. ^{[15
]}

Evans, A. S. ^{[16
,17
]}

Fumagalli, M. ^{[11
,18
]}

Gallagher, J. S., III ^{[19
]}

Gouliermis, D. A. ^{[20
,21
]}

Grebel, E. K. ^{[22
]}

Herrero, A. ^{[23
,24
]}

Hunter, D. A. ^{[25
]}

Johnson, K. E. ^{[16
]}

Kennicutt, R. C. ^{[26
]}

Kim, H. ^{[27
,28
]}

Krumholz, M. R. ^{[9
]}

Lennon, D. ^{[29
]}

Levay, K. ^{[2
]}

Martin, C. ^{[30
]}

Nair, P. ^{[31
]}

Nota, A. ^{[4
]}

Ostlin, G. ^{[3
]}

Pellerin, A. ^{[32
]}

Prieto, J. ^{[33
]}

Regan, M. W. ^{[2
]}

Ryon, J. E. ^{[19
]}

Schaerer, D. ^{[34
]}

Schiminovich, D. ^{[35
]}

Tosi, M. ^{[36
]}

Van Dyk, S. D. ^{[37
]}

Walterbos, R. ^{[38
]}

Whitmore, B. C. ^{[2
]}

Wofford, A. ^{[39
]}

机构：

[1] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA

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

[3] Stockholm Univ, Oskar Klein Ctr, Dept Astron, S-10691 Stockholm, Sweden

[4] European Space Agcy, Space Telescope Sci Inst, Baltimore, MD USA

[5] Univ Arizona, Dept Astron, Tucson, AZ USA

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

[7] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA

[8] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[9] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[10] Univ Amsterdam, Astron Inst Anton Pannekoek, Amsterdam, Netherlands

[11] Observ Carnegie Inst Sci, Pasadena, CA USA

[12] CALTECH, TAPIR Inst, Pasadena, CA 91125 USA

[13] Univ Exeter, Sch Phys & Astron, Exeter, Devon, England

[14] IBM Corp, IBM Res Div, Yorktown Hts, NY USA

[15] Vassar Coll, Dept Phys, Poughkeepsie, NY 12601 USA

[16] Univ Virginia, Dept Astron, Charlottesville, VA 22903 USA

[17] Natl Radio Astron Observ, Charlottesville, VA USA

[18] Univ Durham, Dept Phys, Inst Computat Cosmol, Durham, England

[19] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA

[20] Heidelberg Univ, Inst Theoret Astrophys, Ctr Astron, Heidelberg, Germany

[21] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[22] Heidelberg Univ, Astronom Rechen Inst, Zentrum Astron, Heidelberg, Germany

[23] Inst Astrofis Canarias, Tenerife, Spain

[24] Univ La Laguna, Dept Astrofis, Tenerife, Spain

[25] Lowell Observ, Flagstaff, AZ 86001 USA

[26] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[27] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA

[28] Korea Astron & Space Sci Inst, Taejon, South Korea

[29] ESA, European Space Astron Ctr, Madrid, Spain

[30] CALTECH, Pasadena, CA 91125 USA

[31] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA

[32] SUNY Coll Geneseo, Dept Phys & Astron, Geneseo, NY 14454 USA

[33] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[34] Univ Geneva, Observ Geneva, Geneva, Switzerland

[35] Columbia Univ, Dept Astron, New York, NY 10027 USA

[36] INAF Osserv Astron Bologna, Bologna, Italy

[37] CALTECH, IPAC, Pasadena, CA 91125 USA

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

[39] UPMC, CNRS, UMR7095, Inst Astrophys, Paris, France

来源：

ASTRONOMICAL JOURNAL | 2015年 / 149卷 / 02期

关键词：

galaxies: general; galaxies: star clusters: general; galaxies: star formation; galaxies: stellar content; ultraviolet: galaxies; ultraviolet: stars; STAR-FORMATION RATES; INITIAL MASS FUNCTION; SIMILAR-TO; GALAXY-EVOLUTION-EXPLORER; DWARF IRREGULAR GALAXIES; KILOPARSEC-SCALE CLUMPS; GIANT MOLECULAR CLOUDS; SMALL-MAGELLANIC-CLOUD; EXTREME OUTER DISK; ULTRA DEEP FIELD;

D O I：

10.1088/0004-6256/149/2/51

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Legacy ExtraGalactic UV Survey (LEGUS) is a Cycle 21 Treasury program on the Hubble Space Telescope aimed at the investigation of star formation and its relation with galactic environment in nearby galaxies, from the scales of individual stars to those of similar to kiloparsec-size clustered structures. Five-band imaging from the nearultraviolet to the I band with the Wide-Field Camera 3 (WFC3), plus parallel optical imaging with the Advanced Camera for Surveys (ACS), is being collected for selected pointings of 50 galaxies within the local 12 Mpc. The filters used for the observations with the WFC3 are F275W(lambda 2704 angstrom), F336W(lambda 3355 angstrom), F438W(lambda 4325 angstrom), F555W(lambda 5308 angstrom), and F814W(lambda 8024 angstrom); the parallel observations with the ACS use the filters F435W (lambda 4328 angstrom), F606W(lambda 5921 angstrom), and F814W(lambda 8057 angstrom). The multiband images are yielding accurate recent (less than or similar to 50 Myr) star formation histories from resolved massive stars and the extinction-corrected ages and masses of star clusters and associations. The extensive inventories of massive stars and clustered systems will be used to investigate the spatial and temporal evolution of star formation within galaxies. This will, in turn, inform theories of galaxy evolution and improve the understanding of the physical underpinning of the gas-star formation relation and the nature of star formation at high redshift. This paper describes the survey, its goals and observational strategy, and the initial scientific results. Because LEGUS will provide a reference survey and a foundation for future observations with the James Webb Space Telescope and with ALMA, a large number of data products are planned for delivery to the community.

引用

页数：25

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