Spiral arms in CALIFA galaxies traced by non-circular velocities, abundances and extinctions
Abstract We derive maps of the observed velocity of ionized gas, the oxygen abundance and the extinction (Balmer decrement) across the area of the four spiral galaxies NGC 36, NGC 180, NGC 6063 and NGC 7653 from integral field spectroscopy obtained by the Calar Alto Legacy Integral Field Area (CALIF...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2018-02, Vol.474 (2), p.1657-1671 |
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| container_title | Monthly notices of the Royal Astronomical Society |
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| creator | Sakhibov, F. Zinchenko, I. A. Pilyugin, L. S. Grebel, E. K. Just, A. Vílchez, J. M. |
| description | Abstract
We derive maps of the observed velocity of ionized gas, the oxygen abundance and the extinction (Balmer decrement) across the area of the four spiral galaxies NGC 36, NGC 180, NGC 6063 and NGC 7653 from integral field spectroscopy obtained by the Calar Alto Legacy Integral Field Area (CALIFA) survey. We searched for spiral arms through Fourier analysis of the spatial distribution of three tracers (non-circular motion, enhancement of the oxygen abundance and of the extinction) in the discs of our target galaxies. The spiral arms (two-armed logarithmic spirals in the deprojected map) are shown in each target galaxy for each tracer considered. The pitch angles of the spiral arms in a given galaxy obtained with the three different tracers are close to each other. The enhancement of the oxygen abundance in the spiral arms as compared to the abundance in the interarm regions at a given galactocentric distance is small, within a few per cent. We identified a metallicity gradient in our target galaxies. Both barred galaxies in our sample show flatter gradients than the two galaxies without bars. Galactic inclination, position angle of the major axis and the rotation curve were also obtained for each target galaxy using the Fourier analysis of the two-dimensional velocity map. |
| doi_str_mv | 10.1093/mnras/stx2799 |
| format | Article |
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We derive maps of the observed velocity of ionized gas, the oxygen abundance and the extinction (Balmer decrement) across the area of the four spiral galaxies NGC 36, NGC 180, NGC 6063 and NGC 7653 from integral field spectroscopy obtained by the Calar Alto Legacy Integral Field Area (CALIFA) survey. We searched for spiral arms through Fourier analysis of the spatial distribution of three tracers (non-circular motion, enhancement of the oxygen abundance and of the extinction) in the discs of our target galaxies. The spiral arms (two-armed logarithmic spirals in the deprojected map) are shown in each target galaxy for each tracer considered. The pitch angles of the spiral arms in a given galaxy obtained with the three different tracers are close to each other. The enhancement of the oxygen abundance in the spiral arms as compared to the abundance in the interarm regions at a given galactocentric distance is small, within a few per cent. We identified a metallicity gradient in our target galaxies. Both barred galaxies in our sample show flatter gradients than the two galaxies without bars. Galactic inclination, position angle of the major axis and the rotation curve were also obtained for each target galaxy using the Fourier analysis of the two-dimensional velocity map.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1093/mnras/stx2799</identifier><language>eng</language><publisher>London: Oxford University Press</publisher><subject>Barred galaxies ; Extinction ; Fourier analysis ; Galactic rotation ; Galactic structure ; Inclination ; Integral field spectroscopy ; Metallicity ; Oxygen ; Pitch (inclination) ; Spatial analysis ; Spatial distribution ; Spiral galaxies ; Spirals ; Star & galaxy formation ; Stars & galaxies ; Tracers ; Two dimensional analysis ; Velocity</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2018-02, Vol.474 (2), p.1657-1671</ispartof><rights>2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society 2018</rights><rights>2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-24d048a052de5db74c713cbea8b7c187ce83ce2a9290745be8ed8f1045bb9b773</citedby><cites>FETCH-LOGICAL-c337t-24d048a052de5db74c713cbea8b7c187ce83ce2a9290745be8ed8f1045bb9b773</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1603,27923,27924</link.rule.ids><linktorsrc>$$Uhttps://dx.doi.org/10.1093/mnras/stx2799$$EView_record_in_Oxford_University_Press$$FView_record_in_$$GOxford_University_Press</linktorsrc></links><search><creatorcontrib>Sakhibov, F.</creatorcontrib><creatorcontrib>Zinchenko, I. A.</creatorcontrib><creatorcontrib>Pilyugin, L. S.</creatorcontrib><creatorcontrib>Grebel, E. K.</creatorcontrib><creatorcontrib>Just, A.</creatorcontrib><creatorcontrib>Vílchez, J. M.</creatorcontrib><title>Spiral arms in CALIFA galaxies traced by non-circular velocities, abundances and extinctions</title><title>Monthly notices of the Royal Astronomical Society</title><description>Abstract
We derive maps of the observed velocity of ionized gas, the oxygen abundance and the extinction (Balmer decrement) across the area of the four spiral galaxies NGC 36, NGC 180, NGC 6063 and NGC 7653 from integral field spectroscopy obtained by the Calar Alto Legacy Integral Field Area (CALIFA) survey. We searched for spiral arms through Fourier analysis of the spatial distribution of three tracers (non-circular motion, enhancement of the oxygen abundance and of the extinction) in the discs of our target galaxies. The spiral arms (two-armed logarithmic spirals in the deprojected map) are shown in each target galaxy for each tracer considered. The pitch angles of the spiral arms in a given galaxy obtained with the three different tracers are close to each other. The enhancement of the oxygen abundance in the spiral arms as compared to the abundance in the interarm regions at a given galactocentric distance is small, within a few per cent. We identified a metallicity gradient in our target galaxies. Both barred galaxies in our sample show flatter gradients than the two galaxies without bars. Galactic inclination, position angle of the major axis and the rotation curve were also obtained for each target galaxy using the Fourier analysis of the two-dimensional velocity map.</description><subject>Barred galaxies</subject><subject>Extinction</subject><subject>Fourier analysis</subject><subject>Galactic rotation</subject><subject>Galactic structure</subject><subject>Inclination</subject><subject>Integral field spectroscopy</subject><subject>Metallicity</subject><subject>Oxygen</subject><subject>Pitch (inclination)</subject><subject>Spatial analysis</subject><subject>Spatial distribution</subject><subject>Spiral galaxies</subject><subject>Spirals</subject><subject>Star & galaxy formation</subject><subject>Stars & galaxies</subject><subject>Tracers</subject><subject>Two dimensional analysis</subject><subject>Velocity</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqF0EtLAzEUBeAgCtbq0n3AjQvH5jEzySxLsSoUXKg7Idw8KinTzJhkpP33jrZ7V_cuPs6Bg9A1JfeUNHy2DRHSLOUdE01zgiaU11XBmro-RRNCeFVIQek5ukhpQwgpOasn6OO19xFaDHGbsA94MV89L-f4E1rYeZdwjmCcxXqPQxcK46MZWoj427Wd8XkUdxj0ECwEM2oIFrtd9sFk34V0ic7W0CZ3dbxT9L58eFs8FauXx-exqTCci1yw0pJSAqmYdZXVojSCcqMdSC0MlcI4yY1j0LCGiLLSTjor15SMr260EHyKbg65fey-Bpey2nRDDGOlYpSRmnLG5aiKgzKxSym6teqj30LcK0rU74Dqb0B1HHD0twffDf0_9Af6EnQE</recordid><startdate>20180221</startdate><enddate>20180221</enddate><creator>Sakhibov, F.</creator><creator>Zinchenko, I. A.</creator><creator>Pilyugin, L. S.</creator><creator>Grebel, E. K.</creator><creator>Just, A.</creator><creator>Vílchez, J. M.</creator><general>Oxford University Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20180221</creationdate><title>Spiral arms in CALIFA galaxies traced by non-circular velocities, abundances and extinctions</title><author>Sakhibov, F. ; Zinchenko, I. A. ; Pilyugin, L. S. ; Grebel, E. K. ; Just, A. ; Vílchez, J. M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-24d048a052de5db74c713cbea8b7c187ce83ce2a9290745be8ed8f1045bb9b773</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Barred galaxies</topic><topic>Extinction</topic><topic>Fourier analysis</topic><topic>Galactic rotation</topic><topic>Galactic structure</topic><topic>Inclination</topic><topic>Integral field spectroscopy</topic><topic>Metallicity</topic><topic>Oxygen</topic><topic>Pitch (inclination)</topic><topic>Spatial analysis</topic><topic>Spatial distribution</topic><topic>Spiral galaxies</topic><topic>Spirals</topic><topic>Star & galaxy formation</topic><topic>Stars & galaxies</topic><topic>Tracers</topic><topic>Two dimensional analysis</topic><topic>Velocity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sakhibov, F.</creatorcontrib><creatorcontrib>Zinchenko, I. A.</creatorcontrib><creatorcontrib>Pilyugin, L. S.</creatorcontrib><creatorcontrib>Grebel, E. K.</creatorcontrib><creatorcontrib>Just, A.</creatorcontrib><creatorcontrib>Vílchez, J. M.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Monthly notices of the Royal Astronomical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Sakhibov, F.</au><au>Zinchenko, I. A.</au><au>Pilyugin, L. S.</au><au>Grebel, E. K.</au><au>Just, A.</au><au>Vílchez, J. M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spiral arms in CALIFA galaxies traced by non-circular velocities, abundances and extinctions</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><date>2018-02-21</date><risdate>2018</risdate><volume>474</volume><issue>2</issue><spage>1657</spage><epage>1671</epage><pages>1657-1671</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><abstract>Abstract
We derive maps of the observed velocity of ionized gas, the oxygen abundance and the extinction (Balmer decrement) across the area of the four spiral galaxies NGC 36, NGC 180, NGC 6063 and NGC 7653 from integral field spectroscopy obtained by the Calar Alto Legacy Integral Field Area (CALIFA) survey. We searched for spiral arms through Fourier analysis of the spatial distribution of three tracers (non-circular motion, enhancement of the oxygen abundance and of the extinction) in the discs of our target galaxies. The spiral arms (two-armed logarithmic spirals in the deprojected map) are shown in each target galaxy for each tracer considered. The pitch angles of the spiral arms in a given galaxy obtained with the three different tracers are close to each other. The enhancement of the oxygen abundance in the spiral arms as compared to the abundance in the interarm regions at a given galactocentric distance is small, within a few per cent. We identified a metallicity gradient in our target galaxies. Both barred galaxies in our sample show flatter gradients than the two galaxies without bars. Galactic inclination, position angle of the major axis and the rotation curve were also obtained for each target galaxy using the Fourier analysis of the two-dimensional velocity map.</abstract><cop>London</cop><pub>Oxford University Press</pub><doi>10.1093/mnras/stx2799</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
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| source | Oxford Journals Open Access Collection |
| subjects | Barred galaxies Extinction Fourier analysis Galactic rotation Galactic structure Inclination Integral field spectroscopy Metallicity Oxygen Pitch (inclination) Spatial analysis Spatial distribution Spiral galaxies Spirals Star & galaxy formation Stars & galaxies Tracers Two dimensional analysis Velocity |
| title | Spiral arms in CALIFA galaxies traced by non-circular velocities, abundances and extinctions |
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