Optical Studies of Seven Bright Southern Cataclysmic Variable Stars
We report spectroscopic observations of seven bright southern cataclysmic variable stars, collected on a single two-week observing run using the 1.9 m Radcliffe telescope at the South African Astronomical Observatory. We used a radial-velocity time series, in some cases in combination with other dat...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/ace7bf |
| _version_ | 1797694266935345152 |
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| author | John R. Thorstensen Chase K. Alvarado-Anderson Abigail D. Burrows Rowan M. Goebel-Bain David C. Katz |
| author_facet | John R. Thorstensen Chase K. Alvarado-Anderson Abigail D. Burrows Rowan M. Goebel-Bain David C. Katz |
| author_sort | John R. Thorstensen |
| collection | DOAJ |
| description | We report spectroscopic observations of seven bright southern cataclysmic variable stars, collected on a single two-week observing run using the 1.9 m Radcliffe telescope at the South African Astronomical Observatory. We used a radial-velocity time series, in some cases in combination with other data, to determine or clarify orbital periods for five of them, namely ATO J061.1478−31.0634, BMAM-V547, MGAB-V202, NSV 4202, and V1147 Cen. For BMAM-V547, we use data from the Transiting Exoplanet Survey Satellite (TESS) to corroborate and sharpen the orbital period; the TESS data also show a photometric period near 3.93 days, likely indicating precession of the accretion disk. Also, we find a periodic modulation in the radial velocities of the SU UMa-type dwarf nova Var Ret2005, but are unable to specify a unique cycle count. Finally, we show a spectrum of ASASSN-V J061528.41−412007.3 that appears typical of a luminous novalike variable. |
| first_indexed | 2024-03-12T02:55:28Z |
| format | Article |
| id | doaj.art-c662aadfd2464588a0569982497d6002 |
| institution | Directory Open Access Journal |
| issn | 1538-3881 |
| language | English |
| last_indexed | 2024-03-12T02:55:28Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj.art-c662aadfd2464588a0569982497d60022023-09-03T15:23:11ZengIOP PublishingThe Astronomical Journal1538-38812023-01-01166313110.3847/1538-3881/ace7bfOptical Studies of Seven Bright Southern Cataclysmic Variable StarsJohn R. Thorstensen0https://orcid.org/0000-0002-4964-4144Chase K. Alvarado-Anderson1Abigail D. Burrows2Rowan M. Goebel-Bain3David C. Katz4Department of Physics and Astronomy, 6127 Wilder Laboratory, Dartmouth College , Hanover, NH 03755-3528, USA ; john.thorstensen@dartmouth.eduDepartment of Physics and Astronomy, 6127 Wilder Laboratory, Dartmouth College , Hanover, NH 03755-3528, USA ; john.thorstensen@dartmouth.eduDepartment of Physics and Astronomy, 6127 Wilder Laboratory, Dartmouth College , Hanover, NH 03755-3528, USA ; john.thorstensen@dartmouth.eduDepartment of Physics and Astronomy, 6127 Wilder Laboratory, Dartmouth College , Hanover, NH 03755-3528, USA ; john.thorstensen@dartmouth.eduDepartment of Physics and Astronomy, 6127 Wilder Laboratory, Dartmouth College , Hanover, NH 03755-3528, USA ; john.thorstensen@dartmouth.eduWe report spectroscopic observations of seven bright southern cataclysmic variable stars, collected on a single two-week observing run using the 1.9 m Radcliffe telescope at the South African Astronomical Observatory. We used a radial-velocity time series, in some cases in combination with other data, to determine or clarify orbital periods for five of them, namely ATO J061.1478−31.0634, BMAM-V547, MGAB-V202, NSV 4202, and V1147 Cen. For BMAM-V547, we use data from the Transiting Exoplanet Survey Satellite (TESS) to corroborate and sharpen the orbital period; the TESS data also show a photometric period near 3.93 days, likely indicating precession of the accretion disk. Also, we find a periodic modulation in the radial velocities of the SU UMa-type dwarf nova Var Ret2005, but are unable to specify a unique cycle count. Finally, we show a spectrum of ASASSN-V J061528.41−412007.3 that appears typical of a luminous novalike variable.https://doi.org/10.3847/1538-3881/ace7bfCataclysmic variable starsNova-like variable starsSU Ursae Majoris starsU Geminorum stars |
| spellingShingle | John R. Thorstensen Chase K. Alvarado-Anderson Abigail D. Burrows Rowan M. Goebel-Bain David C. Katz Optical Studies of Seven Bright Southern Cataclysmic Variable Stars The Astronomical Journal Cataclysmic variable stars Nova-like variable stars SU Ursae Majoris stars U Geminorum stars |
| title | Optical Studies of Seven Bright Southern Cataclysmic Variable Stars |
| title_full | Optical Studies of Seven Bright Southern Cataclysmic Variable Stars |
| title_fullStr | Optical Studies of Seven Bright Southern Cataclysmic Variable Stars |
| title_full_unstemmed | Optical Studies of Seven Bright Southern Cataclysmic Variable Stars |
| title_short | Optical Studies of Seven Bright Southern Cataclysmic Variable Stars |
| title_sort | optical studies of seven bright southern cataclysmic variable stars |
| topic | Cataclysmic variable stars Nova-like variable stars SU Ursae Majoris stars U Geminorum stars |
| url | https://doi.org/10.3847/1538-3881/ace7bf |
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