J/ApJ/885/3 Membership in 12 stellar streams from DES (Shipp+, 2019)
Proper motions of stellar streams discovered in the Dark Energy Survey.
Shipp N., Li T.S., Pace A.B., Erkal D., Drlica-wagner A., Yanny B.,
Belokurov V., Wester W., Koposov S.E., Kuehn K., Lewis G.F., Simpson J.D.,
Wan Z., Zucker D.B., Martell S.L., Wang M.Y., (the S5 Collaboration)
<Astrophys. J., 885, 3-3 (2019)>
=2019ApJ...885....3S 2019ApJ...885....3S (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way; Galaxies, nearby; Cross identifications
Keywords: Stellar kinematics; Milky Way Galaxy; Milky Way stellar halo
Local Group; Galaxy structure
Abstract:
We cross-match high-precision astrometric data from Gaia DR2 with
accurate multiband photometry from the Dark Energy Survey (DES) DR1 to
confidently measure proper motions for nine stellar streams in the DES
footprint: Aliqa Uma, ATLAS, Chenab, Elqui, Indus, Jhelum, Phoenix,
Tucana III, and Turranburra. We determine low-confidence proper-motion
measurements for four additional stellar streams: Ravi, Wambelong,
Willka Yaku, and Turbio. We find evidence for a misalignment between
stream tracks and the systemic proper motion of streams that may
suggest a systematic gravitational influence from the Large Magellanic
Cloud (LMC). These proper motions, when combined with radial velocity
measurements, will allow for detailed orbit modeling that can be used
to constrain properties of the LMC and its effect on nearby streams,
as well as global properties of the Milky Way's gravitational
potential.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 56 146 Probable stream member stars based on
proper-motion measurements
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See also:
II/350 : VLT Survey Telescope ATLAS (Shanks+, 2015)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)
J/other/A+AT/25.185 : Absolute proper motions globular clusters (Dambis, 2006)
J/ApJ/863/89 : Gaia DR2 PMs stars in ultra-faint MW satellites (Simon,2018)
J/ApJ/866/22 : Spectroscopic analysis of Tuc III stream (Li+, 2018)
J/MNRAS/474/4112 : Candidate RR Lyr star streams in inner Galaxy (Mateu+, 2018)
J/ApJ/875/77 : Proper motions of MW satellites with Gaia & DES (Pace+,2019)
J/MNRAS/482/5138 : Galactic GC mean pms & velocities (Baumgardt+, 2019)
J/MNRAS/484/2832 : Proper motions Milky Way globular clusters (Vasiliev, 2019)
Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Stream Stream identification
13- 31 I19 --- Gaia Gaia DR2 source identification
33- 41 F9.5 deg RAdeg [-37.7/72.6] Degree of right ascension (J2000)
43- 51 F9.5 deg DEdeg [-64.4/-18.2] Degree of declination (J2000)
53- 56 F4.2 --- Pmemb [0.8/1] Membership probability
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 26-May-2021