Astronomy:V1094 Scorpii
250px Visual band light curves for V1094 Scorpii, adapted from Wichmann et al. (1998)[1] and Joergens et al. (2001)[2] | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Scorpius-Lupus |
| Right ascension | 16h 08m 36.17701s[3] |
| Declination | −39° 23′ 02.4621″[3] |
| Apparent magnitude (V) | 13.48 |
| Characteristics | |
| Spectral type | K6V[4] |
| Variable type | T Tauri-type? |
| Astrometry | |
| Proper motion (μ) | RA: −9.830[3] mas/yr Dec.: +23.435[3] mas/yr |
| Parallax (π) | 6.5086 ± 0.0452[3] mas |
| Distance | 501 ± 3 ly (154 ± 1 pc) |
| Details[4] | |
| Mass | 0.92 M☉ |
| Radius | 1.9 R☉ |
| Luminosity | 1.7 L☉ |
| Temperature | 4,205 K |
| Age | 2-3 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
V1094 Scorpii is a young stellar object in the constellation of Scorpius, located in the young Lupus Star Forming Region.[5] It is being orbited by a protoplanetary disk that extends out to a distance of 300 astronomical unit|AU from the host star. There are gaps at 100 AU and 170 AU, with bright rings at 130 AU and 220 AU.[4]
In 1998, Rainer Wichmann et al. announced that the star, then known as RXJ1608.6-3922, is a variable star, based on visual band photometry over a nine day interval. They classified it as an eclipsing binary.[6] Later observations showed that the brightness variations are due to starspots.[2] It was given its variable star designation in the year 2000.[7]
Periodic radial velocity variations in the young star V1094 Scorpii had at first been explained by the presence of a substellar object in a tight orbit.[8] Currently, the presence of a substellar object has been retracted; again starspots have been invoked as the actual cause for observed radial velocity variations.[2]
References
- ↑ Wichmann, R.; Bouvier, J.; Allain, S.; Krautter, J. (February 1998). "Rotational evolution of pre-main sequence stars in Lupus". Astronomy and Astrophysics 330: 521–532. Bibcode: 1998A&A...330..521W. https://ui.adsabs.harvard.edu/abs/1998A&A...330..521W. Retrieved 19 March 2022.
- ↑ 2.0 2.1 2.2 Joergens, V. et al. (2001). "The T Tauri star RX J1608.6-3922 - not an eclipsing binary but a spotted single star". Astronomy and Astrophysics 373 (3): 966–973. doi:10.1051/0004-6361:20010684. Bibcode: 2001A&A...373..966J.
- ↑ 3.0 3.1 3.2 3.3 3.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 4.0 4.1 4.2 van Terwisga, S. E. et al. (August 2018). "V1094 Scorpii: A rare giant multi-ringed disk around a T Tauri star". Astronomy & Astrophysics 616: 10. doi:10.1051/0004-6361/201832862. A88. Bibcode: 2018A&A...616A..88V.
- ↑ Hughes, Joanne et al. (1993). "The distance to the Lupus star formation region". The Astronomical Journal 105 (2): 571–575. doi:10.1086/116454. Bibcode: 1993AJ....105..571H.
- ↑ Wichmann, R.; Bouvier, J.; Allain, S.; Krautter, J. (February 1998). "Rotational evolution of pre-main sequence stars in Lupus". Astronomy and Astrophysics 330: 521-532. Bibcode: 1998A&A...330..521W. https://articles.adsabs.harvard.edu/pdf/1998A%26A...330..521W. Retrieved 15 September 2025.
- ↑ Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V. (March 2000). "The 75th Name-List of Variable Stars". Information Bulletin on Variable Stars 4870: 1-47. Bibcode: 2000IBVS.4870....1K. https://ibvs.konkoly.hu/pub/ibvs/4801/4870.pdf. Retrieved 15 September 2025.
- ↑ Wichmann, R. et al. (1997). "T Tauri stars and the Gould Belt near Lupus". Astronomy and Astrophysics 326: 211–217. Bibcode: 1997A&A...326..211W.
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