A spatially resolved analysis of star-formation burstiness by comparing UV and H$\alpha$ in galaxies at z$\sim$1 with UVCANDELS
The UltraViolet imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey Fields (UVCANDELS) program provides HST/UVIS F275W imaging for four CANDELS fields. We combine this UV imaging with existing HST/near-IR grism spectroscopy from 3D-HST$+$AGHAST to directly compare the resol...
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| creator | Mehta, Vihang Teplitz, Harry I Scarlata, Claudia Wang, Xin Alavi, Anahita Colbert, James Rafelski, Marc Grogin, Norman Koekemoer, Anton Prichard, Laura Windhorst, Rogier Barber, Justin M Conselice, Christopher J Dai, Y. Sophia Gardner, Jonathan P Gawiser, Eric Guo, Yicheng Hathi, Nimish Haro, Pablo Arrabal Hayes, Matthew Iyer, Kartheik G Jansen, Rolf A Ji, Zhiyuan Kurczynski, Peter Kuschel, Maxwell Lucas, Ray A Mantha, Kameswara O'Connell, Robert W Ravindranath, Swara Robertson, Brant E Rutkowski, Michael Siana, Brian Yung, L. Y. Aaron |
| description | The UltraViolet imaging of the Cosmic Assembly Near-infrared Deep
Extragalactic Legacy Survey Fields (UVCANDELS) program provides HST/UVIS F275W
imaging for four CANDELS fields. We combine this UV imaging with existing
HST/near-IR grism spectroscopy from 3D-HST$+$AGHAST to directly compare the
resolved rest-frame UV and H$\alpha$ emission for a sample of 979 galaxies at
$0.71.1$ to have bursty
star-formation regardless of radius or surface brightness. |
| doi_str_mv | 10.48550/arxiv.2211.02056 |
| format | Article |
| fullrecord | <record><control><sourceid>arxiv_GOX</sourceid><recordid>TN_cdi_arxiv_primary_2211_02056</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2211_02056</sourcerecordid><originalsourceid>FETCH-LOGICAL-a676-4efd62a82c9e8c64c92e92d2a79ae29286ca8d70da28af2d7ad396ec69223d33</originalsourceid><addsrcrecordid>eNotkL1OwzAURr0woMIDMHGHrAnJTeLEYxQKRapgKDBVim5jp7Xk_MgOpWHh1QmF6VvOd4bD2E0UBkmepuEd2ZM-BohRFIQYpvySfRfgBho1GTOBVa43RyWBOjKT0w76BtxI1m96285U38Huw7pRd8o52E1Q9-1AVnd7eHufXxJW3pbMcCAPdAd7MnTSygGN8OVtnW69CD71eJjpsni-X643V-yiIePU9f8u2OZh-Vqu_PXL41NZrH3iGfcT1UiOlGMtVF7zpBaoBEqkTJBCgTmvKZdZKAlzalBmJGPBVc0FYizjeMFu_6znANVgdUt2qn5DVOcQ8Q_OZVlq</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>A spatially resolved analysis of star-formation burstiness by comparing UV and H$\alpha$ in galaxies at z$\sim$1 with UVCANDELS</title><source>arXiv.org</source><creator>Mehta, Vihang ; Teplitz, Harry I ; Scarlata, Claudia ; Wang, Xin ; Alavi, Anahita ; Colbert, James ; Rafelski, Marc ; Grogin, Norman ; Koekemoer, Anton ; Prichard, Laura ; Windhorst, Rogier ; Barber, Justin M ; Conselice, Christopher J ; Dai, Y. Sophia ; Gardner, Jonathan P ; Gawiser, Eric ; Guo, Yicheng ; Hathi, Nimish ; Haro, Pablo Arrabal ; Hayes, Matthew ; Iyer, Kartheik G ; Jansen, Rolf A ; Ji, Zhiyuan ; Kurczynski, Peter ; Kuschel, Maxwell ; Lucas, Ray A ; Mantha, Kameswara ; O'Connell, Robert W ; Ravindranath, Swara ; Robertson, Brant E ; Rutkowski, Michael ; Siana, Brian ; Yung, L. Y. Aaron</creator><creatorcontrib>Mehta, Vihang ; Teplitz, Harry I ; Scarlata, Claudia ; Wang, Xin ; Alavi, Anahita ; Colbert, James ; Rafelski, Marc ; Grogin, Norman ; Koekemoer, Anton ; Prichard, Laura ; Windhorst, Rogier ; Barber, Justin M ; Conselice, Christopher J ; Dai, Y. Sophia ; Gardner, Jonathan P ; Gawiser, Eric ; Guo, Yicheng ; Hathi, Nimish ; Haro, Pablo Arrabal ; Hayes, Matthew ; Iyer, Kartheik G ; Jansen, Rolf A ; Ji, Zhiyuan ; Kurczynski, Peter ; Kuschel, Maxwell ; Lucas, Ray A ; Mantha, Kameswara ; O'Connell, Robert W ; Ravindranath, Swara ; Robertson, Brant E ; Rutkowski, Michael ; Siana, Brian ; Yung, L. Y. Aaron</creatorcontrib><description>The UltraViolet imaging of the Cosmic Assembly Near-infrared Deep
Extragalactic Legacy Survey Fields (UVCANDELS) program provides HST/UVIS F275W
imaging for four CANDELS fields. We combine this UV imaging with existing
HST/near-IR grism spectroscopy from 3D-HST$+$AGHAST to directly compare the
resolved rest-frame UV and H$\alpha$ emission for a sample of 979 galaxies at
$0.7<z<1.5$ spanning a range in stellar mass of $10^{8-11.5}$ M$_\odot$. Using
a stacking analysis, we perform a resolved comparison between homogenized maps
of rest-UV and H$\alpha$ to compute the average UV-to-H$\alpha$ luminosity
ratio (an indicator of burstiness in star-formation) as a function of
galactocentric radius. We find that galaxies below stellar mass of
$\sim$10$^{9.5}$ M$_\odot$, at all radii, have a UV-to-H$\alpha$ ratio higher
than the equilibrium value expected from constant star-formation, indicating a
significant contribution from bursty star-formation. Even for galaxies with
stellar mass $\gtrsim$10$^{9.5}$ M$_\odot$, the UV-to-H$\alpha$ ratio is
elevated towards in their outskirts ($R/R_{eff}>1.5$), suggesting that bursty
star-formation is likely prevalent in the outskirts of even the most massive
galaxies but is likely over-shadowed by their brighter cores. Furthermore, we
present the UV-to-H$\alpha$ ratio as a function of galaxy surface brightness, a
proxy for stellar mass surface density, and find that regions below
$\sim$10$^{7.5}$ M$_\odot$ kpc$^{-2}$ are consistent with bursty
star-formation, regardless of their galaxy stellar mass, potentially suggesting
that local star-formation is independent of global galaxy properties at the
smallest scales. Lastly, we find galaxies at $z>1.1$ to have bursty
star-formation regardless of radius or surface brightness.</description><identifier>DOI: 10.48550/arxiv.2211.02056</identifier><language>eng</language><subject>Physics - Astrophysics of Galaxies</subject><creationdate>2022-11</creationdate><rights>http://creativecommons.org/licenses/by/4.0</rights><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/2211.02056$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2211.02056$$DView paper in arXiv$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.3847/1538-4357/acd9cf$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink></links><search><creatorcontrib>Mehta, Vihang</creatorcontrib><creatorcontrib>Teplitz, Harry I</creatorcontrib><creatorcontrib>Scarlata, Claudia</creatorcontrib><creatorcontrib>Wang, Xin</creatorcontrib><creatorcontrib>Alavi, Anahita</creatorcontrib><creatorcontrib>Colbert, James</creatorcontrib><creatorcontrib>Rafelski, Marc</creatorcontrib><creatorcontrib>Grogin, Norman</creatorcontrib><creatorcontrib>Koekemoer, Anton</creatorcontrib><creatorcontrib>Prichard, Laura</creatorcontrib><creatorcontrib>Windhorst, Rogier</creatorcontrib><creatorcontrib>Barber, Justin M</creatorcontrib><creatorcontrib>Conselice, Christopher J</creatorcontrib><creatorcontrib>Dai, Y. Sophia</creatorcontrib><creatorcontrib>Gardner, Jonathan P</creatorcontrib><creatorcontrib>Gawiser, Eric</creatorcontrib><creatorcontrib>Guo, Yicheng</creatorcontrib><creatorcontrib>Hathi, Nimish</creatorcontrib><creatorcontrib>Haro, Pablo Arrabal</creatorcontrib><creatorcontrib>Hayes, Matthew</creatorcontrib><creatorcontrib>Iyer, Kartheik G</creatorcontrib><creatorcontrib>Jansen, Rolf A</creatorcontrib><creatorcontrib>Ji, Zhiyuan</creatorcontrib><creatorcontrib>Kurczynski, Peter</creatorcontrib><creatorcontrib>Kuschel, Maxwell</creatorcontrib><creatorcontrib>Lucas, Ray A</creatorcontrib><creatorcontrib>Mantha, Kameswara</creatorcontrib><creatorcontrib>O'Connell, Robert W</creatorcontrib><creatorcontrib>Ravindranath, Swara</creatorcontrib><creatorcontrib>Robertson, Brant E</creatorcontrib><creatorcontrib>Rutkowski, Michael</creatorcontrib><creatorcontrib>Siana, Brian</creatorcontrib><creatorcontrib>Yung, L. Y. Aaron</creatorcontrib><title>A spatially resolved analysis of star-formation burstiness by comparing UV and H$\alpha$ in galaxies at z$\sim$1 with UVCANDELS</title><description>The UltraViolet imaging of the Cosmic Assembly Near-infrared Deep
Extragalactic Legacy Survey Fields (UVCANDELS) program provides HST/UVIS F275W
imaging for four CANDELS fields. We combine this UV imaging with existing
HST/near-IR grism spectroscopy from 3D-HST$+$AGHAST to directly compare the
resolved rest-frame UV and H$\alpha$ emission for a sample of 979 galaxies at
$0.7<z<1.5$ spanning a range in stellar mass of $10^{8-11.5}$ M$_\odot$. Using
a stacking analysis, we perform a resolved comparison between homogenized maps
of rest-UV and H$\alpha$ to compute the average UV-to-H$\alpha$ luminosity
ratio (an indicator of burstiness in star-formation) as a function of
galactocentric radius. We find that galaxies below stellar mass of
$\sim$10$^{9.5}$ M$_\odot$, at all radii, have a UV-to-H$\alpha$ ratio higher
than the equilibrium value expected from constant star-formation, indicating a
significant contribution from bursty star-formation. Even for galaxies with
stellar mass $\gtrsim$10$^{9.5}$ M$_\odot$, the UV-to-H$\alpha$ ratio is
elevated towards in their outskirts ($R/R_{eff}>1.5$), suggesting that bursty
star-formation is likely prevalent in the outskirts of even the most massive
galaxies but is likely over-shadowed by their brighter cores. Furthermore, we
present the UV-to-H$\alpha$ ratio as a function of galaxy surface brightness, a
proxy for stellar mass surface density, and find that regions below
$\sim$10$^{7.5}$ M$_\odot$ kpc$^{-2}$ are consistent with bursty
star-formation, regardless of their galaxy stellar mass, potentially suggesting
that local star-formation is independent of global galaxy properties at the
smallest scales. Lastly, we find galaxies at $z>1.1$ to have bursty
star-formation regardless of radius or surface brightness.</description><subject>Physics - Astrophysics of Galaxies</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotkL1OwzAURr0woMIDMHGHrAnJTeLEYxQKRapgKDBVim5jp7Xk_MgOpWHh1QmF6VvOd4bD2E0UBkmepuEd2ZM-BohRFIQYpvySfRfgBho1GTOBVa43RyWBOjKT0w76BtxI1m96285U38Huw7pRd8o52E1Q9-1AVnd7eHufXxJW3pbMcCAPdAd7MnTSygGN8OVtnW69CD71eJjpsni-X643V-yiIePU9f8u2OZh-Vqu_PXL41NZrH3iGfcT1UiOlGMtVF7zpBaoBEqkTJBCgTmvKZdZKAlzalBmJGPBVc0FYizjeMFu_6znANVgdUt2qn5DVOcQ8Q_OZVlq</recordid><startdate>20221103</startdate><enddate>20221103</enddate><creator>Mehta, Vihang</creator><creator>Teplitz, Harry I</creator><creator>Scarlata, Claudia</creator><creator>Wang, Xin</creator><creator>Alavi, Anahita</creator><creator>Colbert, James</creator><creator>Rafelski, Marc</creator><creator>Grogin, Norman</creator><creator>Koekemoer, Anton</creator><creator>Prichard, Laura</creator><creator>Windhorst, Rogier</creator><creator>Barber, Justin M</creator><creator>Conselice, Christopher J</creator><creator>Dai, Y. 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Aaron</creator><scope>GOX</scope></search><sort><creationdate>20221103</creationdate><title>A spatially resolved analysis of star-formation burstiness by comparing UV and H$\alpha$ in galaxies at z$\sim$1 with UVCANDELS</title><author>Mehta, Vihang ; Teplitz, Harry I ; Scarlata, Claudia ; Wang, Xin ; Alavi, Anahita ; Colbert, James ; Rafelski, Marc ; Grogin, Norman ; Koekemoer, Anton ; Prichard, Laura ; Windhorst, Rogier ; Barber, Justin M ; Conselice, Christopher J ; Dai, Y. Sophia ; Gardner, Jonathan P ; Gawiser, Eric ; Guo, Yicheng ; Hathi, Nimish ; Haro, Pablo Arrabal ; Hayes, Matthew ; Iyer, Kartheik G ; Jansen, Rolf A ; Ji, Zhiyuan ; Kurczynski, Peter ; Kuschel, Maxwell ; Lucas, Ray A ; Mantha, Kameswara ; O'Connell, Robert W ; Ravindranath, Swara ; Robertson, Brant E ; Rutkowski, Michael ; Siana, Brian ; Yung, L. Y. 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Aaron</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Mehta, Vihang</au><au>Teplitz, Harry I</au><au>Scarlata, Claudia</au><au>Wang, Xin</au><au>Alavi, Anahita</au><au>Colbert, James</au><au>Rafelski, Marc</au><au>Grogin, Norman</au><au>Koekemoer, Anton</au><au>Prichard, Laura</au><au>Windhorst, Rogier</au><au>Barber, Justin M</au><au>Conselice, Christopher J</au><au>Dai, Y. Sophia</au><au>Gardner, Jonathan P</au><au>Gawiser, Eric</au><au>Guo, Yicheng</au><au>Hathi, Nimish</au><au>Haro, Pablo Arrabal</au><au>Hayes, Matthew</au><au>Iyer, Kartheik G</au><au>Jansen, Rolf A</au><au>Ji, Zhiyuan</au><au>Kurczynski, Peter</au><au>Kuschel, Maxwell</au><au>Lucas, Ray A</au><au>Mantha, Kameswara</au><au>O'Connell, Robert W</au><au>Ravindranath, Swara</au><au>Robertson, Brant E</au><au>Rutkowski, Michael</au><au>Siana, Brian</au><au>Yung, L. Y. Aaron</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A spatially resolved analysis of star-formation burstiness by comparing UV and H$\alpha$ in galaxies at z$\sim$1 with UVCANDELS</atitle><date>2022-11-03</date><risdate>2022</risdate><abstract>The UltraViolet imaging of the Cosmic Assembly Near-infrared Deep
Extragalactic Legacy Survey Fields (UVCANDELS) program provides HST/UVIS F275W
imaging for four CANDELS fields. We combine this UV imaging with existing
HST/near-IR grism spectroscopy from 3D-HST$+$AGHAST to directly compare the
resolved rest-frame UV and H$\alpha$ emission for a sample of 979 galaxies at
$0.7<z<1.5$ spanning a range in stellar mass of $10^{8-11.5}$ M$_\odot$. Using
a stacking analysis, we perform a resolved comparison between homogenized maps
of rest-UV and H$\alpha$ to compute the average UV-to-H$\alpha$ luminosity
ratio (an indicator of burstiness in star-formation) as a function of
galactocentric radius. We find that galaxies below stellar mass of
$\sim$10$^{9.5}$ M$_\odot$, at all radii, have a UV-to-H$\alpha$ ratio higher
than the equilibrium value expected from constant star-formation, indicating a
significant contribution from bursty star-formation. Even for galaxies with
stellar mass $\gtrsim$10$^{9.5}$ M$_\odot$, the UV-to-H$\alpha$ ratio is
elevated towards in their outskirts ($R/R_{eff}>1.5$), suggesting that bursty
star-formation is likely prevalent in the outskirts of even the most massive
galaxies but is likely over-shadowed by their brighter cores. Furthermore, we
present the UV-to-H$\alpha$ ratio as a function of galaxy surface brightness, a
proxy for stellar mass surface density, and find that regions below
$\sim$10$^{7.5}$ M$_\odot$ kpc$^{-2}$ are consistent with bursty
star-formation, regardless of their galaxy stellar mass, potentially suggesting
that local star-formation is independent of global galaxy properties at the
smallest scales. Lastly, we find galaxies at $z>1.1$ to have bursty
star-formation regardless of radius or surface brightness.</abstract><doi>10.48550/arxiv.2211.02056</doi><oa>free_for_read</oa></addata></record> |
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| identifier | DOI: 10.48550/arxiv.2211.02056 |
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| subjects | Physics - Astrophysics of Galaxies |
| title | A spatially resolved analysis of star-formation burstiness by comparing UV and H$\alpha$ in galaxies at z$\sim$1 with UVCANDELS |
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