6-m Telescope Spectroscopic Observations of The Bubble Complex in NGC 6946
We describe the results of a long-slit spectroscopic study of an unusual star complex in the nearby spiral galaxy NGC 6946 using the SAO 6-m telescope and the Keck 10-m telescope. The complex resembles a circular bubble 600 pc in diameter with a young super star cluster (SSC) near the center. The ki...
Gespeichert in:
| Hauptverfasser: | , , , , , , , , |
|---|---|
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | Efremov, Yu. N Pustilnik, S. A Kniazev, A. Y Elmegreen, B. G Larsen, S. S Alfaro, E. J Hodge, P. W Pramsky, A. G Richtler, T |
| description | We describe the results of a long-slit spectroscopic study of an unusual star
complex in the nearby spiral galaxy NGC 6946 using the SAO 6-m telescope and
the Keck 10-m telescope. The complex resembles a circular bubble 600 pc in
diameter with a young super star cluster (SSC) near the center. The kinematics
of ionized gas is studied through Ha emission with several slit positions.
Position-velocity diagrams show two distinct features with high speed motions.
One is an irregularly shaped region to the east of the SSC, 270 pc in size, in
which most of the Ha emission is blue shifted by 120 km/s, and another is a 350
pc shell centered on the SSC with positive and negative velocity shifts of 60
km/s. Balmer and HeI absorption lines in the SSC give an age of 12-13 Myr,
which is consistent with the photometric age but significantly older than the
kinematic ages of the high speed regions. The energetics of the SSC and its
interaction with the environment are considered. The expansion energies exceed
10^52 ergs, but the power outputs from winds and supernova in the SSC are large
enough to account for this. The intensities of Balmer, [NII], and [SII]
emission lines within and around the complex indicate that shock excitation
makes a significant contribution to the emission from the most energetic
region. |
| doi_str_mv | 10.48550/arxiv.astro-ph/0205368 |
| format | Article |
| fullrecord | <record><control><sourceid>arxiv_GOX</sourceid><recordid>TN_cdi_arxiv_primary_astro_ph_0205368</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>astro_ph_0205368</sourcerecordid><originalsourceid>FETCH-LOGICAL-a798-9512084a70d73be647bb14baf637cc05d7b241c95c1e4501b5ec6430287e40f33</originalsourceid><addsrcrecordid>eNotz71OwzAUBWAvDKjwDHhhdHsd_2aECAqoageyR7Z7o1hKasspVXl7oHQ6OtLRkT5CHjgspVUKVq6c42np5mNJLA8rqEAJbW_Jh2YTbXHEOaSM9DNj-J38lRjozs9YTu4Y02GmqaftgPT5y_sRaZOmPOKZxgPdrhuqa6nvyE3vxhnvr7kg7etL27yxzW793jxtmDO1ZbXiFVjpDOyN8Kil8Z5L73otTAig9sZXkodaBY5SAfcKg5YCKmtQQi_Egjz-315IXS5xcuW7u9C6PHRXmvgBaNNKtg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>6-m Telescope Spectroscopic Observations of The Bubble Complex in NGC 6946</title><source>arXiv.org</source><creator>Efremov, Yu. N ; Pustilnik, S. A ; Kniazev, A. Y ; Elmegreen, B. G ; Larsen, S. S ; Alfaro, E. J ; Hodge, P. W ; Pramsky, A. G ; Richtler, T</creator><creatorcontrib>Efremov, Yu. N ; Pustilnik, S. A ; Kniazev, A. Y ; Elmegreen, B. G ; Larsen, S. S ; Alfaro, E. J ; Hodge, P. W ; Pramsky, A. G ; Richtler, T</creatorcontrib><description>We describe the results of a long-slit spectroscopic study of an unusual star
complex in the nearby spiral galaxy NGC 6946 using the SAO 6-m telescope and
the Keck 10-m telescope. The complex resembles a circular bubble 600 pc in
diameter with a young super star cluster (SSC) near the center. The kinematics
of ionized gas is studied through Ha emission with several slit positions.
Position-velocity diagrams show two distinct features with high speed motions.
One is an irregularly shaped region to the east of the SSC, 270 pc in size, in
which most of the Ha emission is blue shifted by 120 km/s, and another is a 350
pc shell centered on the SSC with positive and negative velocity shifts of 60
km/s. Balmer and HeI absorption lines in the SSC give an age of 12-13 Myr,
which is consistent with the photometric age but significantly older than the
kinematic ages of the high speed regions. The energetics of the SSC and its
interaction with the environment are considered. The expansion energies exceed
10^52 ergs, but the power outputs from winds and supernova in the SSC are large
enough to account for this. The intensities of Balmer, [NII], and [SII]
emission lines within and around the complex indicate that shock excitation
makes a significant contribution to the emission from the most energetic
region.</description><identifier>DOI: 10.48550/arxiv.astro-ph/0205368</identifier><language>eng</language><subject>Physics - Astrophysics of Galaxies ; Physics - Cosmology and Nongalactic Astrophysics ; Physics - Earth and Planetary Astrophysics ; Physics - High Energy Astrophysical Phenomena ; Physics - Instrumentation and Methods for Astrophysics ; Physics - Solar and Stellar Astrophysics</subject><creationdate>2002-05</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,776,881</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/astro-ph/0205368$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.astro-ph/0205368$$DView paper in arXiv$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.1051/0004-6361:20020721$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink></links><search><creatorcontrib>Efremov, Yu. N</creatorcontrib><creatorcontrib>Pustilnik, S. A</creatorcontrib><creatorcontrib>Kniazev, A. Y</creatorcontrib><creatorcontrib>Elmegreen, B. G</creatorcontrib><creatorcontrib>Larsen, S. S</creatorcontrib><creatorcontrib>Alfaro, E. J</creatorcontrib><creatorcontrib>Hodge, P. W</creatorcontrib><creatorcontrib>Pramsky, A. G</creatorcontrib><creatorcontrib>Richtler, T</creatorcontrib><title>6-m Telescope Spectroscopic Observations of The Bubble Complex in NGC 6946</title><description>We describe the results of a long-slit spectroscopic study of an unusual star
complex in the nearby spiral galaxy NGC 6946 using the SAO 6-m telescope and
the Keck 10-m telescope. The complex resembles a circular bubble 600 pc in
diameter with a young super star cluster (SSC) near the center. The kinematics
of ionized gas is studied through Ha emission with several slit positions.
Position-velocity diagrams show two distinct features with high speed motions.
One is an irregularly shaped region to the east of the SSC, 270 pc in size, in
which most of the Ha emission is blue shifted by 120 km/s, and another is a 350
pc shell centered on the SSC with positive and negative velocity shifts of 60
km/s. Balmer and HeI absorption lines in the SSC give an age of 12-13 Myr,
which is consistent with the photometric age but significantly older than the
kinematic ages of the high speed regions. The energetics of the SSC and its
interaction with the environment are considered. The expansion energies exceed
10^52 ergs, but the power outputs from winds and supernova in the SSC are large
enough to account for this. The intensities of Balmer, [NII], and [SII]
emission lines within and around the complex indicate that shock excitation
makes a significant contribution to the emission from the most energetic
region.</description><subject>Physics - Astrophysics of Galaxies</subject><subject>Physics - Cosmology and Nongalactic Astrophysics</subject><subject>Physics - Earth and Planetary Astrophysics</subject><subject>Physics - High Energy Astrophysical Phenomena</subject><subject>Physics - Instrumentation and Methods for Astrophysics</subject><subject>Physics - Solar and Stellar Astrophysics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotz71OwzAUBWAvDKjwDHhhdHsd_2aECAqoageyR7Z7o1hKasspVXl7oHQ6OtLRkT5CHjgspVUKVq6c42np5mNJLA8rqEAJbW_Jh2YTbXHEOaSM9DNj-J38lRjozs9YTu4Y02GmqaftgPT5y_sRaZOmPOKZxgPdrhuqa6nvyE3vxhnvr7kg7etL27yxzW793jxtmDO1ZbXiFVjpDOyN8Kil8Z5L73otTAig9sZXkodaBY5SAfcKg5YCKmtQQi_Egjz-315IXS5xcuW7u9C6PHRXmvgBaNNKtg</recordid><startdate>20020522</startdate><enddate>20020522</enddate><creator>Efremov, Yu. N</creator><creator>Pustilnik, S. A</creator><creator>Kniazev, A. Y</creator><creator>Elmegreen, B. G</creator><creator>Larsen, S. S</creator><creator>Alfaro, E. J</creator><creator>Hodge, P. W</creator><creator>Pramsky, A. G</creator><creator>Richtler, T</creator><scope>GOX</scope></search><sort><creationdate>20020522</creationdate><title>6-m Telescope Spectroscopic Observations of The Bubble Complex in NGC 6946</title><author>Efremov, Yu. N ; Pustilnik, S. A ; Kniazev, A. Y ; Elmegreen, B. G ; Larsen, S. S ; Alfaro, E. J ; Hodge, P. W ; Pramsky, A. G ; Richtler, T</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a798-9512084a70d73be647bb14baf637cc05d7b241c95c1e4501b5ec6430287e40f33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Physics - Astrophysics of Galaxies</topic><topic>Physics - Cosmology and Nongalactic Astrophysics</topic><topic>Physics - Earth and Planetary Astrophysics</topic><topic>Physics - High Energy Astrophysical Phenomena</topic><topic>Physics - Instrumentation and Methods for Astrophysics</topic><topic>Physics - Solar and Stellar Astrophysics</topic><toplevel>online_resources</toplevel><creatorcontrib>Efremov, Yu. N</creatorcontrib><creatorcontrib>Pustilnik, S. A</creatorcontrib><creatorcontrib>Kniazev, A. Y</creatorcontrib><creatorcontrib>Elmegreen, B. G</creatorcontrib><creatorcontrib>Larsen, S. S</creatorcontrib><creatorcontrib>Alfaro, E. J</creatorcontrib><creatorcontrib>Hodge, P. W</creatorcontrib><creatorcontrib>Pramsky, A. G</creatorcontrib><creatorcontrib>Richtler, T</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Efremov, Yu. N</au><au>Pustilnik, S. A</au><au>Kniazev, A. Y</au><au>Elmegreen, B. G</au><au>Larsen, S. S</au><au>Alfaro, E. J</au><au>Hodge, P. W</au><au>Pramsky, A. G</au><au>Richtler, T</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>6-m Telescope Spectroscopic Observations of The Bubble Complex in NGC 6946</atitle><date>2002-05-22</date><risdate>2002</risdate><abstract>We describe the results of a long-slit spectroscopic study of an unusual star
complex in the nearby spiral galaxy NGC 6946 using the SAO 6-m telescope and
the Keck 10-m telescope. The complex resembles a circular bubble 600 pc in
diameter with a young super star cluster (SSC) near the center. The kinematics
of ionized gas is studied through Ha emission with several slit positions.
Position-velocity diagrams show two distinct features with high speed motions.
One is an irregularly shaped region to the east of the SSC, 270 pc in size, in
which most of the Ha emission is blue shifted by 120 km/s, and another is a 350
pc shell centered on the SSC with positive and negative velocity shifts of 60
km/s. Balmer and HeI absorption lines in the SSC give an age of 12-13 Myr,
which is consistent with the photometric age but significantly older than the
kinematic ages of the high speed regions. The energetics of the SSC and its
interaction with the environment are considered. The expansion energies exceed
10^52 ergs, but the power outputs from winds and supernova in the SSC are large
enough to account for this. The intensities of Balmer, [NII], and [SII]
emission lines within and around the complex indicate that shock excitation
makes a significant contribution to the emission from the most energetic
region.</abstract><doi>10.48550/arxiv.astro-ph/0205368</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | DOI: 10.48550/arxiv.astro-ph/0205368 |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_arxiv_primary_astro_ph_0205368 |
| source | arXiv.org |
| subjects | Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics |
| title | 6-m Telescope Spectroscopic Observations of The Bubble Complex in NGC 6946 |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-13T10%3A28%3A52IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-arxiv_GOX&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=6-m%20Telescope%20Spectroscopic%20Observations%20of%20The%20Bubble%20Complex%20in%20NGC%206946&rft.au=Efremov,%20Yu.%20N&rft.date=2002-05-22&rft_id=info:doi/10.48550/arxiv.astro-ph/0205368&rft_dat=%3Carxiv_GOX%3Eastro_ph_0205368%3C/arxiv_GOX%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |