publication . Article . Preprint . 2018

Stellar Streams Discovered in the Dark Energy Survey

Nora Shipp; Alex Drlica-Wagner; Eduardo Balbinot; P. Ferguson; Denis Erkal; Ting Li; Keith Bechtol; Vasily Belokurov; B. Buncher; Daniela Carollo; ...
Open Access
  • Published: 30 Jul 2018
  • Country: United Kingdom
Abstract
We perform a search for stellar streams around the Milky Way using the first three years of multi-band optical imaging data from the Dark Energy Survey (DES). We use DES data covering $\sim 5000$ sq. deg. to a depth of $g > 23.5$ with a relative photometric calibration uncertainty of $< 1 \%$. This data set yields unprecedented sensitivity to the stellar density field in the southern celestial hemisphere, enabling the detection of faint stellar streams to a heliocentric distance of $\sim 50$ kpc. We search for stellar streams using a matched-filter in color-magnitude space derived from a synthetic isochrone of an old, metal-poor stellar population. Our detection...
Persistent Identifiers
Subjects
arXiv: Astrophysics::Galaxy AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Earth and Planetary Astrophysics
free text keywords: Space and Planetary Science, Astronomy and Astrophysics, halo [Galaxy], structure [Galaxy], Local Group, RCUK, STFC, /dk/atira/pure/subjectarea/asjc/3100/3103, Astronomy and Astrophysics, /dk/atira/pure/subjectarea/asjc/1900/1912, Space and Planetary Science, QB, Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics, Globular cluster, Dark matter, Local Group, Stellar population, Stellar structure, Stellar density, Milky Way, Astrophysics, Galaxy
Funded by
EC| TESTDE
Project
TESTDE
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
,
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
,
EC| CLUSTERS
Project
CLUSTERS
Galaxy formation through the eyes of globular clusters
  • Funder: European Commission (EC)
  • Project Code: 335936
  • Funding stream: FP7 | SP2 | ERC
,
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
148 references, page 1 of 10

Agnello, A. 2017, MNRAS, 471, 2013, doi: 10.1093/mnras/stx1650

Aihara, H., Arimoto, N., Armstrong, R., et al. 2017, ArXiv e-prints. https://arxiv.org/abs/1704.05858

An, D., Beers, T. C., Santucci, R. M., et al. 2015, ApJL, 813, L28, doi: 10.1088/2041-8205/813/2/L28

An, D., Beers, T. C., Johnson, J. A., et al. 2013, ApJ, 763, 65, doi: 10.1088/0004-637X/763/1/65

Astropy Collaboration, Robitaille, T. P., Tollerud, E. J., et al. 2013, A&A, 558, A33, doi: 10.1051/0004-6361/201322068

Balbinot, E., & Gieles, M. 2017, MNRAS, stx2708, doi: 10.1093/mnras/stx2708

Balbinot, E., Yanny, B., Li, T. S., et al. 2016, ApJ, 820, 58, doi: 10.3847/0004-637X/820/1/58

Bechtol, K., Drlica-Wagner, A., Balbinot, E., et al. 2015, ApJ, 807, 50, doi: 10.1088/0004-637X/807/1/50

Bell, E. F., Zucker, D. B., Belokurov, V., Sharma, S., et al. 2008, ApJ, 680, 295, doi: 10.1086/588032

Belokurov, V., Evans, N. W., Irwin, M. J., Lynden-Bell, D., et al. 2007a, ApJ, 658, 337, doi: 10.1086/511302

Belokurov, V., Zucker, D. B., Evans, N. W., et al. 2006a, ApJL, 647, L111, doi: 10.1086/507324

|. 2006b, ApJL, 642, L137, doi: 10.1086/504797

|. 2007b, ApJ, 654, 897, doi: 10.1086/509718

Belokurov, V., Evans, N. W., Bell, E. F., et al. 2007c, ApJL, 657, L89, doi: 10.1086/513144

Bernard, E. J., Ferguson, A. M. N., Schla y, E. F., et al. 2014, MNRAS, 443, L84, doi: 10.1093/mnrasl/slu089

148 references, page 1 of 10
Abstract
We perform a search for stellar streams around the Milky Way using the first three years of multi-band optical imaging data from the Dark Energy Survey (DES). We use DES data covering $\sim 5000$ sq. deg. to a depth of $g > 23.5$ with a relative photometric calibration uncertainty of $< 1 \%$. This data set yields unprecedented sensitivity to the stellar density field in the southern celestial hemisphere, enabling the detection of faint stellar streams to a heliocentric distance of $\sim 50$ kpc. We search for stellar streams using a matched-filter in color-magnitude space derived from a synthetic isochrone of an old, metal-poor stellar population. Our detection...
Persistent Identifiers
Subjects
arXiv: Astrophysics::Galaxy AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Earth and Planetary Astrophysics
free text keywords: Space and Planetary Science, Astronomy and Astrophysics, halo [Galaxy], structure [Galaxy], Local Group, RCUK, STFC, /dk/atira/pure/subjectarea/asjc/3100/3103, Astronomy and Astrophysics, /dk/atira/pure/subjectarea/asjc/1900/1912, Space and Planetary Science, QB, Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics, Globular cluster, Dark matter, Local Group, Stellar population, Stellar structure, Stellar density, Milky Way, Astrophysics, Galaxy
Funded by
EC| TESTDE
Project
TESTDE
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
,
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
,
EC| CLUSTERS
Project
CLUSTERS
Galaxy formation through the eyes of globular clusters
  • Funder: European Commission (EC)
  • Project Code: 335936
  • Funding stream: FP7 | SP2 | ERC
,
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
148 references, page 1 of 10

Agnello, A. 2017, MNRAS, 471, 2013, doi: 10.1093/mnras/stx1650

Aihara, H., Arimoto, N., Armstrong, R., et al. 2017, ArXiv e-prints. https://arxiv.org/abs/1704.05858

An, D., Beers, T. C., Santucci, R. M., et al. 2015, ApJL, 813, L28, doi: 10.1088/2041-8205/813/2/L28

An, D., Beers, T. C., Johnson, J. A., et al. 2013, ApJ, 763, 65, doi: 10.1088/0004-637X/763/1/65

Astropy Collaboration, Robitaille, T. P., Tollerud, E. J., et al. 2013, A&A, 558, A33, doi: 10.1051/0004-6361/201322068

Balbinot, E., & Gieles, M. 2017, MNRAS, stx2708, doi: 10.1093/mnras/stx2708

Balbinot, E., Yanny, B., Li, T. S., et al. 2016, ApJ, 820, 58, doi: 10.3847/0004-637X/820/1/58

Bechtol, K., Drlica-Wagner, A., Balbinot, E., et al. 2015, ApJ, 807, 50, doi: 10.1088/0004-637X/807/1/50

Bell, E. F., Zucker, D. B., Belokurov, V., Sharma, S., et al. 2008, ApJ, 680, 295, doi: 10.1086/588032

Belokurov, V., Evans, N. W., Irwin, M. J., Lynden-Bell, D., et al. 2007a, ApJ, 658, 337, doi: 10.1086/511302

Belokurov, V., Zucker, D. B., Evans, N. W., et al. 2006a, ApJL, 647, L111, doi: 10.1086/507324

|. 2006b, ApJL, 642, L137, doi: 10.1086/504797

|. 2007b, ApJ, 654, 897, doi: 10.1086/509718

Belokurov, V., Evans, N. W., Bell, E. F., et al. 2007c, ApJL, 657, L89, doi: 10.1086/513144

Bernard, E. J., Ferguson, A. M. N., Schla y, E. F., et al. 2014, MNRAS, 443, L84, doi: 10.1093/mnrasl/slu089

148 references, page 1 of 10
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