Kinematic groups beyond the solar neighbourhood with RAVE
ABSTRACT We analyse the kinematics of disc stars observed by the RAdial Velocity Experiment (RAVE) survey in and beyond the solar neighbourhood. We detect significant overdensities in the velocity distributions using a technique based on the wavelet transform. We find that the main local kinematic g...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society. Letters 2012-10, Vol.426 (1), p.L1-L5 |
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| creator | Antoja, T. Helmi, A. Bienayme, O. Bland‐Hawthorn, J. Famaey, B. Freeman, K. Gibson, B. K. Gilmore, G. Grebel, E. K. Minchev, I. Munari, U. Navarro, J. Parker, Q. Reid, W. Seabroke, G. M. Siebert, A. Siviero, A. Steinmetz, M. Williams, M. Wyse, R. Zwitter, T. |
| description | ABSTRACT
We analyse the kinematics of disc stars observed by the RAdial Velocity Experiment (RAVE) survey in and beyond the solar neighbourhood. We detect significant overdensities in the velocity distributions using a technique based on the wavelet transform. We find that the main local kinematic groups are large‐scale features, surviving at least up to ∼1 kpc from the Sun in the direction of antirotation, and also at below the Galactic plane. We also find that for regions located at different radii than the Sun, the known groups appear shifted in the vR–vφ velocity plane. For example, the Hercules group has a larger azimuthal velocity for regions inside the solar circle and a lower value outside. We have also discovered a new group at in the solar neighbourhood and confirmed the significance of other previously found groups. Some of these trends detected for the first time are consistent with dynamical models of the effects of the bar and the spiral arms. More modelling is required to definitively characterize the non‐axisymmetric components of our Galaxy using these groups. |
| doi_str_mv | 10.1111/j.1745-3933.2012.01310.x |
| format | Article |
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We analyse the kinematics of disc stars observed by the RAdial Velocity Experiment (RAVE) survey in and beyond the solar neighbourhood. We detect significant overdensities in the velocity distributions using a technique based on the wavelet transform. We find that the main local kinematic groups are large‐scale features, surviving at least up to ∼1 kpc from the Sun in the direction of antirotation, and also at below the Galactic plane. We also find that for regions located at different radii than the Sun, the known groups appear shifted in the vR–vφ velocity plane. For example, the Hercules group has a larger azimuthal velocity for regions inside the solar circle and a lower value outside. We have also discovered a new group at in the solar neighbourhood and confirmed the significance of other previously found groups. Some of these trends detected for the first time are consistent with dynamical models of the effects of the bar and the spiral arms. More modelling is required to definitively characterize the non‐axisymmetric components of our Galaxy using these groups.</description><identifier>ISSN: 1745-3925</identifier><identifier>EISSN: 1745-3933</identifier><identifier>DOI: 10.1111/j.1745-3933.2012.01310.x</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Astrophysics ; Galaxy: evolution ; Galaxy: kinematics and dynamics ; Galaxy: structure ; Physics ; solar neighbourhood</subject><ispartof>Monthly notices of the Royal Astronomical Society. Letters, 2012-10, Vol.426 (1), p.L1-L5</ispartof><rights>2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4310-31af0cc059a565541ef54d9d02d8b1e71b7bd2e80fa784a66a068db20a98846c3</citedby><cites>FETCH-LOGICAL-c4310-31af0cc059a565541ef54d9d02d8b1e71b7bd2e80fa784a66a068db20a98846c3</cites><orcidid>0000-0003-3180-9825</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fj.1745-3933.2012.01310.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1745-3933.2012.01310.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,27903,27904,45553,45554</link.rule.ids><backlink>$$Uhttps://hal.science/hal-04595208$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Antoja, T.</creatorcontrib><creatorcontrib>Helmi, A.</creatorcontrib><creatorcontrib>Bienayme, O.</creatorcontrib><creatorcontrib>Bland‐Hawthorn, J.</creatorcontrib><creatorcontrib>Famaey, B.</creatorcontrib><creatorcontrib>Freeman, K.</creatorcontrib><creatorcontrib>Gibson, B. K.</creatorcontrib><creatorcontrib>Gilmore, G.</creatorcontrib><creatorcontrib>Grebel, E. K.</creatorcontrib><creatorcontrib>Minchev, I.</creatorcontrib><creatorcontrib>Munari, U.</creatorcontrib><creatorcontrib>Navarro, J.</creatorcontrib><creatorcontrib>Parker, Q.</creatorcontrib><creatorcontrib>Reid, W.</creatorcontrib><creatorcontrib>Seabroke, G. M.</creatorcontrib><creatorcontrib>Siebert, A.</creatorcontrib><creatorcontrib>Siviero, A.</creatorcontrib><creatorcontrib>Steinmetz, M.</creatorcontrib><creatorcontrib>Williams, M.</creatorcontrib><creatorcontrib>Wyse, R.</creatorcontrib><creatorcontrib>Zwitter, T.</creatorcontrib><title>Kinematic groups beyond the solar neighbourhood with RAVE</title><title>Monthly notices of the Royal Astronomical Society. Letters</title><description>ABSTRACT
We analyse the kinematics of disc stars observed by the RAdial Velocity Experiment (RAVE) survey in and beyond the solar neighbourhood. We detect significant overdensities in the velocity distributions using a technique based on the wavelet transform. We find that the main local kinematic groups are large‐scale features, surviving at least up to ∼1 kpc from the Sun in the direction of antirotation, and also at below the Galactic plane. We also find that for regions located at different radii than the Sun, the known groups appear shifted in the vR–vφ velocity plane. For example, the Hercules group has a larger azimuthal velocity for regions inside the solar circle and a lower value outside. We have also discovered a new group at in the solar neighbourhood and confirmed the significance of other previously found groups. Some of these trends detected for the first time are consistent with dynamical models of the effects of the bar and the spiral arms. More modelling is required to definitively characterize the non‐axisymmetric components of our Galaxy using these groups.</description><subject>Astrophysics</subject><subject>Galaxy: evolution</subject><subject>Galaxy: kinematics and dynamics</subject><subject>Galaxy: structure</subject><subject>Physics</subject><subject>solar neighbourhood</subject><issn>1745-3925</issn><issn>1745-3933</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqNkF1LwzAUhoMoOKf_IZd60ZqPpk1uhDGmE6uCqLchbdM1o2tm0rrt39ta2bXn5hxynvcQHgAgRiHu63Yd4iRiARWUhgRhEiJM-93-BEyOi9PjTNg5uPB-jRBNeMInQDyZRm9Ua3K4crbbepjpg20K2FYaelsrBxttVlVmO1dZW8CdaSv4NvtcXIKzUtVeX_31Kfi4X7zPl0H6-vA4n6VBHvUfCShWJcpzxIRiMWMR1iWLClEgUvAM6wRnSVYQzVGpEh6pOFYo5kVGkBKcR3FOp-BmvFupWm6d2Sh3kFYZuZylcnhDEROMIP6Ne_Z6ZLfOfnXat3JjfK7rWjXadl72wijBnAvRo3xEc2e9d7o83sZo4LBcy0GaHATKwaz8NSv3ffRujO5MrQ__zsnnl5QMI_0BYZJ9DQ</recordid><startdate>201210</startdate><enddate>201210</enddate><creator>Antoja, T.</creator><creator>Helmi, A.</creator><creator>Bienayme, O.</creator><creator>Bland‐Hawthorn, J.</creator><creator>Famaey, B.</creator><creator>Freeman, K.</creator><creator>Gibson, B. 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Letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Antoja, T.</au><au>Helmi, A.</au><au>Bienayme, O.</au><au>Bland‐Hawthorn, J.</au><au>Famaey, B.</au><au>Freeman, K.</au><au>Gibson, B. K.</au><au>Gilmore, G.</au><au>Grebel, E. K.</au><au>Minchev, I.</au><au>Munari, U.</au><au>Navarro, J.</au><au>Parker, Q.</au><au>Reid, W.</au><au>Seabroke, G. M.</au><au>Siebert, A.</au><au>Siviero, A.</au><au>Steinmetz, M.</au><au>Williams, M.</au><au>Wyse, R.</au><au>Zwitter, T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Kinematic groups beyond the solar neighbourhood with RAVE</atitle><jtitle>Monthly notices of the Royal Astronomical Society. Letters</jtitle><date>2012-10</date><risdate>2012</risdate><volume>426</volume><issue>1</issue><spage>L1</spage><epage>L5</epage><pages>L1-L5</pages><issn>1745-3925</issn><eissn>1745-3933</eissn><abstract>ABSTRACT
We analyse the kinematics of disc stars observed by the RAdial Velocity Experiment (RAVE) survey in and beyond the solar neighbourhood. We detect significant overdensities in the velocity distributions using a technique based on the wavelet transform. We find that the main local kinematic groups are large‐scale features, surviving at least up to ∼1 kpc from the Sun in the direction of antirotation, and also at below the Galactic plane. We also find that for regions located at different radii than the Sun, the known groups appear shifted in the vR–vφ velocity plane. For example, the Hercules group has a larger azimuthal velocity for regions inside the solar circle and a lower value outside. We have also discovered a new group at in the solar neighbourhood and confirmed the significance of other previously found groups. Some of these trends detected for the first time are consistent with dynamical models of the effects of the bar and the spiral arms. More modelling is required to definitively characterize the non‐axisymmetric components of our Galaxy using these groups.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1745-3933.2012.01310.x</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0003-3180-9825</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete; Oxford Journals Open Access Collection; Alma/SFX Local Collection |
| subjects | Astrophysics Galaxy: evolution Galaxy: kinematics and dynamics Galaxy: structure Physics solar neighbourhood |
| title | Kinematic groups beyond the solar neighbourhood with RAVE |
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