RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY
Abstract
Here, we show that in the anticenter region, between Galactic longitudes of 110° < l < 229°, there is an oscillating asymmetry in the main-sequence star counts on either side of the Galactic plane using data from the Sloan Digital Sky Survey. This asymmetry oscillates from more stars in the north at distances of about 2 kpc from the Sun to more stars in the south at 4–6 kpc from the Sun to more stars in the north at distances of 8–10 kpc from the Sun. We also see evidence that there are more stars in the south at distances of 12–16 kpc from the Sun. The three more distant asymmetries form roughly concentric rings around the Galactic center, opening in the direction of the Milky Way's spiral arms. The northern ring, 9 kpc from the Sun, is easily identified with the previously discovered Monoceros Ring. Parts of the southern ring at 14 kpc from the Sun (which we call the TriAnd Ring) have previously been identified as related to the Monoceros Ring, and others have been called the Triangulum Andromeda Overdensity. The two nearer oscillations are approximated by a toy model in which the disk plane is offset bymore »
- Authors:
-
[1];
[6]
- Chinese Academy of Sciences, Beijing (China). Key Laboratory of Optical Astronomy, National Astronomical Observatories; Rensselaer Polytechnic Institute, Troy, NY (United States). Department of Physics, Applied Physics and Astronomy
- Rensselaer Polytechnic Institute, Troy, NY (United States). Department of Physics, Applied Physics and Astronomy
- Chinese Academy of Sciences, Beijing (China). Key Laboratory of Optical Astronomy, National Astronomical Observatories
- Chinese Academy of Sciences, Shanghai (China). Shanghai Astronomical Observatory
- Univ. of Oxford (United Kingdom). Rudolf-Peierls Centre for Theoretical Physics
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States). Experimental Astrophysics Group
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1395474
- Report Number(s):
- arXiv:1503.00257; FERMILAB-PUB-17-388-CD
Journal ID: ISSN 1538-4357; 1624635
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 801; Journal Issue: 2; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; Galaxy: disk; Galaxy: kinematics and dynamics; Galaxy: structure
Citation Formats
Xu, Yan, Newberg, Heidi Jo, Carlin, Jeffrey L., Liu, Chao, Deng, Licai, Li, Jing, Schönrich, Ralph, and Yanny, Brian. RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY. United States: N. p., 2015.
Web. doi:10.1088/0004-637X/801/2/105.
Xu, Yan, Newberg, Heidi Jo, Carlin, Jeffrey L., Liu, Chao, Deng, Licai, Li, Jing, Schönrich, Ralph, & Yanny, Brian. RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY. United States. https://doi.org/10.1088/0004-637X/801/2/105
Xu, Yan, Newberg, Heidi Jo, Carlin, Jeffrey L., Liu, Chao, Deng, Licai, Li, Jing, Schönrich, Ralph, and Yanny, Brian. Wed .
"RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY". United States. https://doi.org/10.1088/0004-637X/801/2/105. https://www.osti.gov/servlets/purl/1395474.
@article{osti_1395474,
title = {RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY},
author = {Xu, Yan and Newberg, Heidi Jo and Carlin, Jeffrey L. and Liu, Chao and Deng, Licai and Li, Jing and Schönrich, Ralph and Yanny, Brian},
abstractNote = {Here, we show that in the anticenter region, between Galactic longitudes of 110° < l < 229°, there is an oscillating asymmetry in the main-sequence star counts on either side of the Galactic plane using data from the Sloan Digital Sky Survey. This asymmetry oscillates from more stars in the north at distances of about 2 kpc from the Sun to more stars in the south at 4–6 kpc from the Sun to more stars in the north at distances of 8–10 kpc from the Sun. We also see evidence that there are more stars in the south at distances of 12–16 kpc from the Sun. The three more distant asymmetries form roughly concentric rings around the Galactic center, opening in the direction of the Milky Way's spiral arms. The northern ring, 9 kpc from the Sun, is easily identified with the previously discovered Monoceros Ring. Parts of the southern ring at 14 kpc from the Sun (which we call the TriAnd Ring) have previously been identified as related to the Monoceros Ring, and others have been called the Triangulum Andromeda Overdensity. The two nearer oscillations are approximated by a toy model in which the disk plane is offset by the order of 100 pc up and then down at different radii. We also show that the disk is not azimuthally symmetric around the Galactic anticenter and that there could be a correspondence between our observed oscillations and the spiral structure of the Galaxy. Lastly, our observations suggest that the TriAnd and Monoceros Rings (which extend to at least 25 kpc from the Galactic center) are primarily the result of disk oscillations.},
doi = {10.1088/0004-637X/801/2/105},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 801,
place = {United States},
year = {Wed Mar 11 00:00:00 EDT 2015},
month = {Wed Mar 11 00:00:00 EDT 2015}
}
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- Du, Cuihua; Li, Hefan; Yan, Yepeng
- The Astrophysical Journal Supplement Series, Vol. 244, Issue 1
Disk-like Chemistry of the Triangulum-Andromeda Overdensity as Seen by APOGEE
journal, May 2018
- Hayes, Christian R.; Majewski, Steven R.; Hasselquist, Sten
- The Astrophysical Journal, Vol. 859, Issue 1
Time Stamps of Vertical Phase Mixing in the Galactic Disk from LAMOST/ Gaia Stars
journal, September 2018
- Tian, Hai-Jun; Liu, Chao; Wu, Yue
- The Astrophysical Journal, Vol. 865, Issue 2
The Origin of High-velocity Stars from Gaia and LAMOST
journal, December 2018
- Du, Cuihua; Li, Hefan; Newberg, Heidi Jo
- The Astrophysical Journal, Vol. 869, Issue 2
Ripple Patterns in In-plane Velocities of OB Stars from LAMOST and Gaia
journal, February 2019
- Cheng, Xinlun; Liu, Chao; Mao, Shude
- The Astrophysical Journal, Vol. 872, Issue 1
Asymmetric Mean Metallicity Distribution of the Milky Way’s Disk
journal, June 2019
- An, Deokkeun
- The Astrophysical Journal, Vol. 878, Issue 2
Age gradients throughout the Galaxy with long-period variables
text, January 2019
- Grady, J.; Belokurov, Vasily; Evans, Wyn
- Apollo - University of Cambridge Repository
Is the Milky Way still breathing? RAVE–Gaia streaming motions
text, January 2018
- Carrillo, I.; Minchev, I.; Kordopatis, G.
- Apollo - University of Cambridge Repository
Thirty Meter Telescope Detailed Science Case: 2015
text, January 2015
- Skidmore, Warren; Dell'Antonio, Ian; Fukugawa, Misato
- arXiv
Determining the local dark matter density with LAMOST data
text, January 2015
- Xia, Qiran; Liu, Chao; Mao, Shude
- arXiv
Disentangling the Virgo Overdensity with RR Lyrae stars
text, January 2016
- Vivas, A. Katherina; Zinn, Robert; Farmer, John
- arXiv
Milky Way Tomography with K and M Dwarf Stars: the Vertical Structure of the Galactic Disk
text, January 2017
- Ferguson, Deborah; Gardner, Susan; Yanny, Brian
- arXiv
A Map of the Local Velocity Substructure in the Milky Way Disk
text, January 2017
- Pearl, Alan N.; Newberg, Heidi Jo; Carlin, Jeffrey L.
- arXiv
Rediscovering the Galactic outer disk with LAMOST data
text, January 2017
- Liu, Chao; Xu, Yan; Wang, Haifeng
- arXiv
Warp, Waves, and Wrinkles in the Milky Way
text, January 2017
- Schönrich, Ralph; Dehnen, Walter
- arXiv
Mapping the Milky Way with LAMOST III: Complicated spatial structure in the outer disc
text, January 2018
- Wang, Hai-Feng; Liu, Chao; Xu, Yan
- arXiv
Stellar mass distribution and star formation history of the Galactic disk revealed by mono-age stellar populations from LAMOST
text, January 2018
- Xiang, Maosheng; Shi, Jianrong; Liu, Xiaowei
- arXiv
Footprints of the Sagittarius dwarf galaxy in the $Gaia$ data set
text, January 2018
- Laporte, Chervin F. P.; Minchev, Ivan; Johnston, Kathryn V.
- arXiv
Fitting the density substructure of the stellar halo with MilkyWay@home
text, January 2018
- Weiss, Jake; Newberg, Heidi Jo; Newby, Matthew
- arXiv
The origin of high velocity stars from Gaia and LAMOST
text, January 2018
- Du, Cuihua; Li, Hefan; Newberg, Heidi Jo
- arXiv
Mapping the Galactic disk with the LAMOST and Gaia Red clump sample: III: A new velocity substructure and time stamps of the Galactic disk asymmetry in the disk between 12$-$15 \,kpc
text, January 2019
- Wang, H. -F.; Carlin, J. L.; Huang, Y.
- arXiv
New nearby hypervelocity stars and their spatial distribution from Gaia DR2
text, January 2019
- Du, Cuihua; Li, Hefan; Yan, Yepeng
- arXiv
Elemental Abundances in M31: A Comparative Analysis of Iron and Alpha Element Abundances in the Outer Disk, Giant Stellar Stream, and Inner Halo of M31
text, January 2019
- Escala, Ivanna; Gilbert, Karoline M.; Kirby, Evan N.
- arXiv
Triangulum-Andromeda overdensity: a region with a complex stellar population
text, January 2019
- Silva, J. V. Sales; Perottoni, H. D.; Cunha, K.
- arXiv