 HH 154 in mid-infrared around L1551 IRS 5 (bright red star in the middle) and L1551 NE (less bright red star to the left) Credit: NASA Spitzer Space Telescope | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04 31 34.077 |
| Declination | 18° 08′ 04.90″ |
| Characteristics | |
| Spectral type | K3V/M3III |
| Astrometry | |
| Distance | 450 ly (140 pc) |
| Details | |
| A | |
| Mass | 0.68 M☉ |
| Radius | 4 R☉ |
| Luminosity | 4.2 L☉ |
| B | |
| Mass | 0.13 M☉ |
| Other designations | |
| L551 IRS 5, 2MASS J04313407+1808049, IRAS 04287+1801, WISE J043134.12+180804.9 EPIC 210683818 | |
| Database references | |
| SIMBAD | data |
L1551 IRS 5 is a protostellar envelope surrounding a binary protostar system in the constellation of Taurus 450 light-years from Earth. The binary system itself is known as L1551 NE, and each star is surrounded by protoplanetary disk. The system is one of Jim Kaler's The 100 greatest stars.
The binary is surrounded by a complex, gas-rich protoplanetary disk system.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| North protoplanetary disk | 13.3±3.5 AU | 35±14° | — | |||
| South protoplanetary disk | 14.0±5.0 AU | 45±15° | — | |||
| Circumbinary protoplanetary disk | 141.9±7.4 AU | 61.5±1.7° | — | |||
References
- ^ Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
- Gramajo, Luciana V.; Rodón, Javier A.; Gómez, Mercedes (2014). "Spectral Energy Distribution Analysis of Class I and Class II FU Orionis Stars". The Astronomical Journal. 147 (6): 140. arXiv:1402.3240. Bibcode:2014AJ....147..140G. doi:10.1088/0004-6256/147/6/140. S2CID 121971148.
- ^ Takakuwa, Shigehisa; Saigo, Kazuya; Matsumoto, Tomoaki; Saito, Masao; Lim, Jeremy; Hanawa, Tomoyuki; Yen, Hsi-Wei; Ho, Paul T. P. (2017). "Spiral Arms, Infall, and Misalignment of the Circumbinary Disk from the Circumstellar Disks in the Protostellar Binary System L1551 NE". The Astrophysical Journal. 837 (1): 86. arXiv:1702.05562. Bibcode:2017ApJ...837...86T. doi:10.3847/1538-4357/aa6116. S2CID 119186924.
- Takakuwa, Shigehisa; Kiyokane, Kazuhiro; Saigo, Kazuya; Saito, Masao (2015). "Dispersing Envelope around the Keplerian Circumbinary Disk in L1551 NE and Its Implications for Binary Growth". The Astrophysical Journal. 814 (2): 160. arXiv:1510.08353. Bibcode:2015ApJ...814..160T. doi:10.1088/0004-637X/814/2/160. S2CID 119258719.
- ^ Cruz-Sáenz De Miera, Fernando; Kóspál, Ágnes; Ábrahám, Péter; Liu, Hauyu Baobab; Takami, Michihiro (2019), "Resolved ALMA Continuum Image of the Circumbinary Ring and Circumstellar Disks in the L1551 IRS 5 System", The Astrophysical Journal, 882 (1): L4, arXiv:1908.04649, Bibcode:2019ApJ...882L...4C, doi:10.3847/2041-8213/ab39ea, S2CID 199552023
- "The 100 Greatest Stars".
- Cody, Ann Marie; Hillenbrand, Lynne A.; Rebull, Luisa M. (May 2022). "The Many-faceted Light Curves of Young Disk-bearing Stars in Taurus as Seen by K2". The Astronomical Journal. 153 (5): 212. arXiv:2204.06646. Bibcode:2022AJ....163..212C. doi:10.3847/1538-3881/ac5b73.
External links
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