A SPECTACULAR OUTFLOW IN AN OBSCURED QUASAR
SDSS J1356+1026 is a pair of interacting galaxies at redshift z = 0.123 that hosts a luminous obscured quasar in its northern nucleus. Here we present two long-slit Magellan LDSS-3 spectra that reveal a pair of symmetric ~10 kpc size outflows emerging from this nucleus, with observed expansion veloc...
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| Veröffentlicht in: | The Astrophysical journal 2012-02, Vol.746 (1), p.1-10 |
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| creator | GREENE, Jenny E ZAKAMSKA, Nadia L SMITH, Paul S |
| description | SDSS J1356+1026 is a pair of interacting galaxies at redshift z = 0.123 that hosts a luminous obscured quasar in its northern nucleus. Here we present two long-slit Magellan LDSS-3 spectra that reveal a pair of symmetric ~10 kpc size outflows emerging from this nucleus, with observed expansion velocities of ~250 km s super(-1) in projection. We present a kinematic model of these outflows and argue that the deprojected physical velocities of expansion are likely ~1000 km s super(-1) and that the kinetic energy of the expanding shells is likely 10 super(44-45) erg s super(-1), with an absolute minimum of >10 super(42) erg s super(-1). Although a radio counterpart is detected at 1.4 GHz, it is faint enough that the quasar is considered to be radio quiet by all standard criteria, and there is no evidence of extended emission due to radio lobes, whether aged or continuously powered by an ongoing jet. We argue that the likely level of star formation is insufficient to power the observed energetic outflow and that SDSS J1356+1026 is a good case for radio-quiet quasar feedback. In further support of this hypothesis, polarimetric observations show that the direction of quasar illumination is coincident with the direction of the outflow. |
| doi_str_mv | 10.1088/0004-637X/746/1/86 |
| format | Article |
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Here we present two long-slit Magellan LDSS-3 spectra that reveal a pair of symmetric ~10 kpc size outflows emerging from this nucleus, with observed expansion velocities of ~250 km s super(-1) in projection. We present a kinematic model of these outflows and argue that the deprojected physical velocities of expansion are likely ~1000 km s super(-1) and that the kinetic energy of the expanding shells is likely 10 super(44-45) erg s super(-1), with an absolute minimum of >10 super(42) erg s super(-1). Although a radio counterpart is detected at 1.4 GHz, it is faint enough that the quasar is considered to be radio quiet by all standard criteria, and there is no evidence of extended emission due to radio lobes, whether aged or continuously powered by an ongoing jet. We argue that the likely level of star formation is insufficient to power the observed energetic outflow and that SDSS J1356+1026 is a good case for radio-quiet quasar feedback. 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In further support of this hypothesis, polarimetric observations show that the direction of quasar illumination is coincident with the direction of the outflow.</description><subject>Astronomy</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>Earth, ocean, space</subject><subject>EMISSION</subject><subject>Exact sciences and technology</subject><subject>Feedback</subject><subject>GALAXIES</subject><subject>GALAXY NUCLEI</subject><subject>ILLUMINANCE</subject><subject>Illumination</subject><subject>Interacting galaxies</subject><subject>KINETIC ENERGY</subject><subject>Nuclear power generation</subject><subject>Nuclei</subject><subject>Outflow</subject><subject>QUASARS</subject><subject>Radio</subject><subject>RED SHIFT</subject><subject>STARS</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqNkM1Kw0AYRQdRsFZfwFVABEFi5ifzt4yx1UJotG3Q3TAzmWAkbWomXfj2NlS6dnX54HyXywHgGsEHBIWIIIRxyAj_iHjMIhQJdgJGiBIRxoTyUzA6Aufgwvuv4cRSjsB9EixfJ-kqSYssWQR5sZpm-XswmwfJPMgfl2mxmDwFb0WyTBaX4KzSjXdXfzkGxXSySl_CLH-epUkW2hjRPqy0M0wwhGLJiCVGQsO0Y7SMRYlwyYytCKlibBwkWvDSGImpqaQw1GjLGBmDm0Nv6_taeVv3zn7adrNxtlcYQ4Q4k3vq7kBtu_Z753yv1rW3rmn0xrU7rxATlAuBKP8HyhmhQjKxR_EBtV3rfecqte3qte5-FIJqUK0GdWowqfaqFVJiGHz716-91U3V6Y2t_fET01hIKiH5BXZ0eB4</recordid><startdate>20120210</startdate><enddate>20120210</enddate><creator>GREENE, Jenny E</creator><creator>ZAKAMSKA, Nadia L</creator><creator>SMITH, Paul S</creator><general>IOP</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20120210</creationdate><title>A SPECTACULAR OUTFLOW IN AN OBSCURED QUASAR</title><author>GREENE, Jenny E ; ZAKAMSKA, Nadia L ; SMITH, Paul S</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c415t-faeb686114963c3b90b6ae65d48d12d6bcf33f42be03a87dbb925bf98b5bac663</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Astronomy</topic><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>Earth, ocean, space</topic><topic>EMISSION</topic><topic>Exact sciences and technology</topic><topic>Feedback</topic><topic>GALAXIES</topic><topic>GALAXY NUCLEI</topic><topic>ILLUMINANCE</topic><topic>Illumination</topic><topic>Interacting galaxies</topic><topic>KINETIC ENERGY</topic><topic>Nuclear power generation</topic><topic>Nuclei</topic><topic>Outflow</topic><topic>QUASARS</topic><topic>Radio</topic><topic>RED SHIFT</topic><topic>STARS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>GREENE, Jenny E</creatorcontrib><creatorcontrib>ZAKAMSKA, Nadia L</creatorcontrib><creatorcontrib>SMITH, Paul S</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>GREENE, Jenny E</au><au>ZAKAMSKA, Nadia L</au><au>SMITH, Paul S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A SPECTACULAR OUTFLOW IN AN OBSCURED QUASAR</atitle><jtitle>The Astrophysical journal</jtitle><date>2012-02-10</date><risdate>2012</risdate><volume>746</volume><issue>1</issue><spage>1</spage><epage>10</epage><pages>1-10</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>SDSS J1356+1026 is a pair of interacting galaxies at redshift z = 0.123 that hosts a luminous obscured quasar in its northern nucleus. Here we present two long-slit Magellan LDSS-3 spectra that reveal a pair of symmetric ~10 kpc size outflows emerging from this nucleus, with observed expansion velocities of ~250 km s super(-1) in projection. We present a kinematic model of these outflows and argue that the deprojected physical velocities of expansion are likely ~1000 km s super(-1) and that the kinetic energy of the expanding shells is likely 10 super(44-45) erg s super(-1), with an absolute minimum of >10 super(42) erg s super(-1). Although a radio counterpart is detected at 1.4 GHz, it is faint enough that the quasar is considered to be radio quiet by all standard criteria, and there is no evidence of extended emission due to radio lobes, whether aged or continuously powered by an ongoing jet. We argue that the likely level of star formation is insufficient to power the observed energetic outflow and that SDSS J1356+1026 is a good case for radio-quiet quasar feedback. In further support of this hypothesis, polarimetric observations show that the direction of quasar illumination is coincident with the direction of the outflow.</abstract><cop>Bristol</cop><pub>IOP</pub><doi>10.1088/0004-637X/746/1/86</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| source | IOP Publishing Free Content; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Astronomy ASTROPHYSICS, COSMOLOGY AND ASTRONOMY Earth, ocean, space EMISSION Exact sciences and technology Feedback GALAXIES GALAXY NUCLEI ILLUMINANCE Illumination Interacting galaxies KINETIC ENERGY Nuclear power generation Nuclei Outflow QUASARS Radio RED SHIFT STARS |
| title | A SPECTACULAR OUTFLOW IN AN OBSCURED QUASAR |
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