The stellar content and distance of UGC 4483
We present HST/WFPC2 observations of UGC 4483, an irregular galaxy in the M81/NGC 2403 complex. Stellar photometry was carried out with HSTphot, and is complete to V≃26.0 and I≃24.7. We measure the red giant branch tip at I=23.56±0.10, and calculate a distance modulus of μ0=27.53±0.12 (corresponding...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2001-06, Vol.324 (1), p.249-256 |
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| creator | Dolphin, A. E. Makarova, L. Karachentsev, I. D. Karachentseva, V. E. Geisler, D. Grebel, E. K. Guhathakurta, P. Hodge, P. W. Sarajedini, A. Seitzer, P. |
| description | We present HST/WFPC2 observations of UGC 4483, an irregular galaxy in the M81/NGC 2403 complex. Stellar photometry was carried out with HSTphot, and is complete to V≃26.0 and I≃24.7. We measure the red giant branch tip at I=23.56±0.10, and calculate a distance modulus of μ0=27.53±0.12 (corresponding to a distance of 3.2±0.2 Mpc), placing UGC 4483 within the NGC 2403 subgroup. We were able to measure properties of a previously known young star cluster in UGC 4483, finding integrated magnitudes of V=18.66±0.21 and I=18.54±0.10 for the stellar contribution (integrated light minus Hα and [O iii] contribution), corresponding to an age of ∼10–15 Myr and an initial mass of ∼104 M⊙. This is consistent with the properties of the cluster's brightest stars, which were resolved in the data for the first time. Finally, a numerical analysis of the galaxy's stellar content yields a roughly constant star formation rate of 1.3×10−3 M⊙ yr−1 and mean metallicity of [Fe/H]=−1.3 dex from 15 Gyr ago to the present. |
| doi_str_mv | 10.1046/j.1365-8711.2001.04312.x |
| format | Article |
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E. ; Makarova, L. ; Karachentsev, I. D. ; Karachentseva, V. E. ; Geisler, D. ; Grebel, E. K. ; Guhathakurta, P. ; Hodge, P. W. ; Sarajedini, A. ; Seitzer, P.</creator><creatorcontrib>Dolphin, A. E. ; Makarova, L. ; Karachentsev, I. D. ; Karachentseva, V. E. ; Geisler, D. ; Grebel, E. K. ; Guhathakurta, P. ; Hodge, P. W. ; Sarajedini, A. ; Seitzer, P.</creatorcontrib><description>We present HST/WFPC2 observations of UGC 4483, an irregular galaxy in the M81/NGC 2403 complex. Stellar photometry was carried out with HSTphot, and is complete to V≃26.0 and I≃24.7. We measure the red giant branch tip at I=23.56±0.10, and calculate a distance modulus of μ0=27.53±0.12 (corresponding to a distance of 3.2±0.2 Mpc), placing UGC 4483 within the NGC 2403 subgroup. We were able to measure properties of a previously known young star cluster in UGC 4483, finding integrated magnitudes of V=18.66±0.21 and I=18.54±0.10 for the stellar contribution (integrated light minus Hα and [O iii] contribution), corresponding to an age of ∼10–15 Myr and an initial mass of ∼104 M⊙. This is consistent with the properties of the cluster's brightest stars, which were resolved in the data for the first time. Finally, a numerical analysis of the galaxy's stellar content yields a roughly constant star formation rate of 1.3×10−3 M⊙ yr−1 and mean metallicity of [Fe/H]=−1.3 dex from 15 Gyr ago to the present.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1046/j.1365-8711.2001.04312.x</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science Ltd</publisher><subject>galaxies: distances and redshifts ; galaxies: individual: UGC 4483 ; galaxies: irregular ; galaxies: stellar content</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2001-06, Vol.324 (1), p.249-256</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4652-8c1d34e2cb6f7f6f09949707556b58c54b1894f21895676d80710756f63652793</citedby><cites>FETCH-LOGICAL-c4652-8c1d34e2cb6f7f6f09949707556b58c54b1894f21895676d80710756f63652793</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1046%2Fj.1365-8711.2001.04312.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1046%2Fj.1365-8711.2001.04312.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Dolphin, A. E.</creatorcontrib><creatorcontrib>Makarova, L.</creatorcontrib><creatorcontrib>Karachentsev, I. D.</creatorcontrib><creatorcontrib>Karachentseva, V. E.</creatorcontrib><creatorcontrib>Geisler, D.</creatorcontrib><creatorcontrib>Grebel, E. K.</creatorcontrib><creatorcontrib>Guhathakurta, P.</creatorcontrib><creatorcontrib>Hodge, P. W.</creatorcontrib><creatorcontrib>Sarajedini, A.</creatorcontrib><creatorcontrib>Seitzer, P.</creatorcontrib><title>The stellar content and distance of UGC 4483</title><title>Monthly notices of the Royal Astronomical Society</title><addtitle>Mon. Not. R. Astron. Soc</addtitle><description>We present HST/WFPC2 observations of UGC 4483, an irregular galaxy in the M81/NGC 2403 complex. Stellar photometry was carried out with HSTphot, and is complete to V≃26.0 and I≃24.7. We measure the red giant branch tip at I=23.56±0.10, and calculate a distance modulus of μ0=27.53±0.12 (corresponding to a distance of 3.2±0.2 Mpc), placing UGC 4483 within the NGC 2403 subgroup. We were able to measure properties of a previously known young star cluster in UGC 4483, finding integrated magnitudes of V=18.66±0.21 and I=18.54±0.10 for the stellar contribution (integrated light minus Hα and [O iii] contribution), corresponding to an age of ∼10–15 Myr and an initial mass of ∼104 M⊙. This is consistent with the properties of the cluster's brightest stars, which were resolved in the data for the first time. Finally, a numerical analysis of the galaxy's stellar content yields a roughly constant star formation rate of 1.3×10−3 M⊙ yr−1 and mean metallicity of [Fe/H]=−1.3 dex from 15 Gyr ago to the present.</description><subject>galaxies: distances and redshifts</subject><subject>galaxies: individual: UGC 4483</subject><subject>galaxies: irregular</subject><subject>galaxies: stellar content</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNqNkE1PwkAQhjdGExH9D3vyZOvsd3vwoETBiBoNJITLpmx3YxFa7JYI_94tNZ697Gwy7zOZeRDCBGICXF4vY8KkiBJFSEwBSAycERrvjlDv0KCplMeoB8C60Ck6834JEGJU9tDV5MNi39jVKquxqcrGlg3OyhznhW-y0lhcOTwdDjDnCTtHJy5beXvxW_to-nA_GYyi8evwcXA7jgyXgkaJITnjlpqFdMpJB2nKUwVKCLkQiRF8QZKUOxpeIZXME1AkdKWTYWGqUtZHl93cTV19ba1v9Lrwpt2xtNXWa6qAQEogBJMuaOrK-9o6vamLdVbvNQHd6tFL3VrQ7eW61aMPevQuoDcd-l2s7P7fnH5-eW9_gY86Pniyuz8-qz-1VEwJPZrN9Vw-zeDuTWpgP2j3ddg</recordid><startdate>20010611</startdate><enddate>20010611</enddate><creator>Dolphin, A. E.</creator><creator>Makarova, L.</creator><creator>Karachentsev, I. D.</creator><creator>Karachentseva, V. E.</creator><creator>Geisler, D.</creator><creator>Grebel, E. K.</creator><creator>Guhathakurta, P.</creator><creator>Hodge, P. W.</creator><creator>Sarajedini, A.</creator><creator>Seitzer, P.</creator><general>Blackwell Science Ltd</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20010611</creationdate><title>The stellar content and distance of UGC 4483</title><author>Dolphin, A. E. ; Makarova, L. ; Karachentsev, I. D. ; Karachentseva, V. E. ; Geisler, D. ; Grebel, E. K. ; Guhathakurta, P. ; Hodge, P. 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W.</creatorcontrib><creatorcontrib>Sarajedini, A.</creatorcontrib><creatorcontrib>Seitzer, P.</creatorcontrib><collection>Istex</collection><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</fulltext></delivery><addata><au>Dolphin, A. E.</au><au>Makarova, L.</au><au>Karachentsev, I. D.</au><au>Karachentseva, V. E.</au><au>Geisler, D.</au><au>Grebel, E. K.</au><au>Guhathakurta, P.</au><au>Hodge, P. W.</au><au>Sarajedini, A.</au><au>Seitzer, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The stellar content and distance of UGC 4483</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><addtitle>Mon. Not. R. Astron. Soc</addtitle><date>2001-06-11</date><risdate>2001</risdate><volume>324</volume><issue>1</issue><spage>249</spage><epage>256</epage><pages>249-256</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><abstract>We present HST/WFPC2 observations of UGC 4483, an irregular galaxy in the M81/NGC 2403 complex. Stellar photometry was carried out with HSTphot, and is complete to V≃26.0 and I≃24.7. We measure the red giant branch tip at I=23.56±0.10, and calculate a distance modulus of μ0=27.53±0.12 (corresponding to a distance of 3.2±0.2 Mpc), placing UGC 4483 within the NGC 2403 subgroup. We were able to measure properties of a previously known young star cluster in UGC 4483, finding integrated magnitudes of V=18.66±0.21 and I=18.54±0.10 for the stellar contribution (integrated light minus Hα and [O iii] contribution), corresponding to an age of ∼10–15 Myr and an initial mass of ∼104 M⊙. This is consistent with the properties of the cluster's brightest stars, which were resolved in the data for the first time. Finally, a numerical analysis of the galaxy's stellar content yields a roughly constant star formation rate of 1.3×10−3 M⊙ yr−1 and mean metallicity of [Fe/H]=−1.3 dex from 15 Gyr ago to the present.</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><doi>10.1046/j.1365-8711.2001.04312.x</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | galaxies: distances and redshifts galaxies: individual: UGC 4483 galaxies: irregular galaxies: stellar content |
| title | The stellar content and distance of UGC 4483 |
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