YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720
We present a time-variability study of young stellar objects (YSOs) in the cluster IRAS 20050+2720, performed at 3.6 and 4.5 μm with the Spitzer Space Telescope; this study is part of the Young Stellar Object VARiability (YSOVAR) project. We have collected light curves for 181 cluster members over 6...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2016
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| Online Access: | http://hdl.handle.net/1721.1/100690 |
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| author | Poppenhaeger, K. Cody, A. M. Covey, K. R. Hillenbrand, L. A. Plavchan, P. Rebull, L. M. Stauffer, J. R. Wolk, S. J. Espaillat, C. Forbrich, J. Gutermuth, R. A. Hora, J. L. Song, Inseok Guenther, Hans Moritz Morales-Calderon, M. |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Poppenhaeger, K. Cody, A. M. Covey, K. R. Hillenbrand, L. A. Plavchan, P. Rebull, L. M. Stauffer, J. R. Wolk, S. J. Espaillat, C. Forbrich, J. Gutermuth, R. A. Hora, J. L. Song, Inseok Guenther, Hans Moritz Morales-Calderon, M. |
| author_sort | Poppenhaeger, K. |
| collection | MIT |
| description | We present a time-variability study of young stellar objects (YSOs) in the cluster IRAS 20050+2720, performed at 3.6 and 4.5 μm with the Spitzer Space Telescope; this study is part of the Young Stellar Object VARiability (YSOVAR) project. We have collected light curves for 181 cluster members over 60 days. We find a high variability fraction among embedded cluster members of ca. 70%, whereas young stars without a detectable disk display variability less often (in ca. 50% of the cases) and with lower amplitudes. We detect periodic variability for 33 sources with periods primarily in the range of 2–6 days. Practically all embedded periodic sources display additional variability on top of their periodicity. Furthermore, we analyze the slopes of the tracks that our sources span in the color–magnitude diagram (CMD). We find that sources with long variability time scales tend to display CMD slopes that are at least partially influenced by accretion processes, while sources with short variability timescales tend to display extinction-dominated slopes. We find a tentative trend of X-ray detected cluster members to vary on longer timescales than the X-ray undetected members. |
| first_indexed | 2024-09-23T16:56:22Z |
| format | Article |
| id | mit-1721.1/100690 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:56:22Z |
| publishDate | 2016 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1006902022-10-03T09:15:59Z YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720 Poppenhaeger, K. Cody, A. M. Covey, K. R. Hillenbrand, L. A. Plavchan, P. Rebull, L. M. Stauffer, J. R. Wolk, S. J. Espaillat, C. Forbrich, J. Gutermuth, R. A. Hora, J. L. Song, Inseok Guenther, Hans Moritz Morales-Calderon, M. MIT Kavli Institute for Astrophysics and Space Research Guenther, Hans Moritz We present a time-variability study of young stellar objects (YSOs) in the cluster IRAS 20050+2720, performed at 3.6 and 4.5 μm with the Spitzer Space Telescope; this study is part of the Young Stellar Object VARiability (YSOVAR) project. We have collected light curves for 181 cluster members over 60 days. We find a high variability fraction among embedded cluster members of ca. 70%, whereas young stars without a detectable disk display variability less often (in ca. 50% of the cases) and with lower amplitudes. We detect periodic variability for 33 sources with periods primarily in the range of 2–6 days. Practically all embedded periodic sources display additional variability on top of their periodicity. Furthermore, we analyze the slopes of the tracks that our sources span in the color–magnitude diagram (CMD). We find that sources with long variability time scales tend to display CMD slopes that are at least partially influenced by accretion processes, while sources with short variability timescales tend to display extinction-dominated slopes. We find a tentative trend of X-ray detected cluster members to vary on longer timescales than the X-ray undetected members. Spitzer (Grant 1490851) 2016-01-04T23:57:14Z 2016-01-04T23:57:14Z 2015-09 2015-04 Article http://purl.org/eprint/type/JournalArticle 1538-3881 0004-6256 http://hdl.handle.net/1721.1/100690 Poppenhaeger, K., A. M. Cody, K. R. Covey, H. M. Gunther, L. A. Hillenbrand, P. Plavchan, L. M. Rebull, et al. “YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720.” The Astronomical Journal 150, no. 4 (September 22, 2015): 118. © 2015 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-6256/150/4/118 The Astronomical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Poppenhaeger, K. Cody, A. M. Covey, K. R. Hillenbrand, L. A. Plavchan, P. Rebull, L. M. Stauffer, J. R. Wolk, S. J. Espaillat, C. Forbrich, J. Gutermuth, R. A. Hora, J. L. Song, Inseok Guenther, Hans Moritz Morales-Calderon, M. YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720 |
| title | YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720 |
| title_full | YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720 |
| title_fullStr | YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720 |
| title_full_unstemmed | YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720 |
| title_short | YSOVAR: MID-INFRARED VARIABILITY OF YOUNG STELLAR OBJECTS AND THEIR DISKS IN THE CLUSTER IRAS 20050+2720 |
| title_sort | ysovar mid infrared variability of young stellar objects and their disks in the cluster iras 20050 2720 |
| url | http://hdl.handle.net/1721.1/100690 |
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