publication . Preprint . Article . 2019

Milky Way Satellite Census - I. The Observational Selection Function for Milky Way Satellites in DES Y3 and Pan-STARRS DR1

Alex Drlica-Wagner; Keith Bechtol; S. Mau; M. McNanna; Ethan O. Nadler; Andrew B. Pace; T. S. Li; A. Pieres; E. Rozo; J. D. Simon; ...
Open Access English
  • Published: 17 Dec 2019
  • Publisher: HAL CCSD
Abstract
We report the results of a systematic search for ultra-faint Milky Way satellite galaxies using data from the Dark Energy Survey (DES) and Pan-STARRS1 (PS1). Together, DES and PS1 provide multi-band photometry in optical/near-infrared wavelengths over ∼80% of the sky. Our search for satellite galaxies targets ∼25,000 deg of the high-Galactic-latitude sky reaching a 10σ point-source depth of ⪆22.5 mag in the g and r bands. While satellite galaxy searches have been performed independently on DES and PS1 before, this is the first time that a self-consistent search is performed across both data sets. We do not detect any new high-significance satellite galaxy candid...
Persistent Identifiers
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy Astrophysics
free text keywords: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Dwarf spheroidal galaxies, Local group, Dark matter, Milky way galaxy, Space and Planetary Science, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, Milky Way, Census, Satellite, Local Group, Astronomy, Physics, Observational study, Dark matter
Related Organizations
Funded by
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • 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
,
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
,
NSF| Kavli Institute for Theoretical Physics
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1748958
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Physics
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
158 references, page 1 of 11

Abell, G. O. 1958, ApJS, 3, 211

Ackermann, M., Albert, A., Anderson, B., et al. 2015, PhRvL, 115, 231301

Agertz, O., Pontzen, A., Read, J. I., et al. 2019, MNRAS, stz3053, arXiv:1904.02723

Aihara, H., Armstrong, R., Bickerton, S., et al. 2018, PASJ, 70, S8

Balbinot, E., Yanny, B., Li, T. S., et al. 2016, ApJ, 820, 58

Barlow, R. 1990, Nuclear Instruments and Methods in Physics Research A, 297, 496

Bechtol, K., Drlica-Wagner, A., Balbinot, E., et al. 2015, ApJ, 807, 50

Belokurov, V., Irwin, M. J., Koposov, S. E., et al. 2014, MNRAS, 441, 2124

Belokurov, V., Zucker, D. B., Evans, N. W., et al. 2006, ApJL, 647, L111

|. 2007, ApJ, 654, 897

Belokurov, V., Walker, M. G., Evans, N. W., et al. 2008, ApJL, 686, L83

|. 2009, MNRAS, 397, 1748

|. 2010, ApJL, 712, L103

Bergstrom, L., Ullio, P., & Buckley, J. H. 1998, Astroparticle Physics, 9, 137

Bertin, E., & Arnouts, S. 1996, A&AS, 117, 393

158 references, page 1 of 11
Abstract
We report the results of a systematic search for ultra-faint Milky Way satellite galaxies using data from the Dark Energy Survey (DES) and Pan-STARRS1 (PS1). Together, DES and PS1 provide multi-band photometry in optical/near-infrared wavelengths over ∼80% of the sky. Our search for satellite galaxies targets ∼25,000 deg of the high-Galactic-latitude sky reaching a 10σ point-source depth of ⪆22.5 mag in the g and r bands. While satellite galaxy searches have been performed independently on DES and PS1 before, this is the first time that a self-consistent search is performed across both data sets. We do not detect any new high-significance satellite galaxy candid...
Persistent Identifiers
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy Astrophysics
free text keywords: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Dwarf spheroidal galaxies, Local group, Dark matter, Milky way galaxy, Space and Planetary Science, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics, Milky Way, Census, Satellite, Local Group, Astronomy, Physics, Observational study, Dark matter
Related Organizations
Funded by
EC| COSMICDAWN
Project
COSMICDAWN
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • 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
,
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
,
NSF| Kavli Institute for Theoretical Physics
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1748958
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Physics
,
EC| COGS
Project
COGS
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
158 references, page 1 of 11

Abell, G. O. 1958, ApJS, 3, 211

Ackermann, M., Albert, A., Anderson, B., et al. 2015, PhRvL, 115, 231301

Agertz, O., Pontzen, A., Read, J. I., et al. 2019, MNRAS, stz3053, arXiv:1904.02723

Aihara, H., Armstrong, R., Bickerton, S., et al. 2018, PASJ, 70, S8

Balbinot, E., Yanny, B., Li, T. S., et al. 2016, ApJ, 820, 58

Barlow, R. 1990, Nuclear Instruments and Methods in Physics Research A, 297, 496

Bechtol, K., Drlica-Wagner, A., Balbinot, E., et al. 2015, ApJ, 807, 50

Belokurov, V., Irwin, M. J., Koposov, S. E., et al. 2014, MNRAS, 441, 2124

Belokurov, V., Zucker, D. B., Evans, N. W., et al. 2006, ApJL, 647, L111

|. 2007, ApJ, 654, 897

Belokurov, V., Walker, M. G., Evans, N. W., et al. 2008, ApJL, 686, L83

|. 2009, MNRAS, 397, 1748

|. 2010, ApJL, 712, L103

Bergstrom, L., Ullio, P., & Buckley, J. H. 1998, Astroparticle Physics, 9, 137

Bertin, E., & Arnouts, S. 1996, A&AS, 117, 393

158 references, page 1 of 11
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