(Redirected from
Θ1 Orionis D)
 Theta1 Orionis D and companions in the Trapezium cluster | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 35m 17.24645s [1] |
| Declination | −05° 23′ 16.5707″ [1] |
| Apparent magnitude (V) | 6.70 [2] |
| Characteristics | |
| Spectral type | B1.5 Vp [3] |
| U−B color index | −0.71 [2] |
| B−V color index | +0.09 [2] |
| Astrometry | |
| Radial velocity (Rv) | +32.4 [4] km/s |
| Proper motion (μ) |
RA: +1.822
[1]
mas/
yr Dec.: _0.393 [1] mas/ yr |
| Parallax (π) | 2.2820 ± 0.0207 mas [1] |
| Distance | 1,430 ± 10
ly (438 ± 4 pc) |
| Absolute magnitude (MV) | −3.3 [5] |
| Details | |
| Mass | 18±6 [5] M☉ |
| Radius | 5.6±0.8 [5] R☉ |
| Luminosity | 29,500 [5] L☉ |
| Surface gravity (log g) | 4.2±0.1 [5] cgs |
| Temperature | 32,000±1,000 [5] K |
| Rotational velocity (v sin i) | 49.0±0.9 [5] km/s |
| Age | 2.5±0.5 [5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Theta1 Orionis D (θ1 Orionis D) is a member of the Trapezium open cluster that lies within the Orion Nebula. It is a B class blue main sequence star with several faint companions.
θ1 Orionis consists of multiple components, primarily the four stars of the Trapezium cluster ( A, B, C, and D) all within one arc-minute of each other. θ2 Orionis is a more distant grouping of three main stars plus several fainter companions, 1-2 arc-minutes from θ1.
θ1 D itself has a faint optical companion 1.4" away and a spectroscopic companion in a 40-day orbit. Infrared Optical Telescope Array observations suggest another companion at 18.6 mas. [6]
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode: 2002yCat.2237....0D.
- ^ Levenhagen, R. S.; Leister, N. V. (2006). "Spectroscopic analysis of southern B and Be stars". Monthly Notices of the Royal Astronomical Society. 371 (1): 252–262. arXiv: astro-ph/0606149. Bibcode: 2006MNRAS.371..252L. doi: 10.1111/j.1365-2966.2006.10655.x. S2CID 16492030.
- ^ Olivares, J.; Sánchez, L. J.; Ruelas-Mayorga, A.; Allen, C.; Costero, R.; Poveda, A. (2013). "Kinematics of the Orion Trapezium Based on Diffracto-Astrometry and Historical Data". The Astronomical Journal. 146 (5): 106. arXiv: 1310.0769. Bibcode: 2013AJ....146..106O. doi: 10.1088/0004-6256/146/5/106. S2CID 119110490.
- ^ a b c d e f g h Simón-Díaz, S.; Herrero, A.; Esteban, C.; Najarro, F. (2006). "Detailed spectroscopic analysis of the Trapezium cluster stars inside the Orion nebula". Astronomy and Astrophysics. 448 (1): 351–366. arXiv: astro-ph/0510288. Bibcode: 2006A&A...448..351S. doi: 10.1051/0004-6361:20053066. ISSN 0004-6361. S2CID 16445304.
- ^ Grellmann, R.; Preibisch, T.; Ratzka, T.; Kraus, S.; Helminiak, K. G.; Zinnecker, H. (2013). "The multiplicity of massive stars in the Orion Nebula Cluster as seen with long-baseline interferometry". Astronomy & Astrophysics. 550: A82. arXiv: 1301.3045. Bibcode: 2013A&A...550A..82G. doi: 10.1051/0004-6361/201220192. S2CID 6554786.
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(Redirected from
Θ1 Orionis D)
Theta1 Orionis D and companions in the Trapezium cluster | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 35m 17.24645s [1] |
| Declination | −05° 23′ 16.5707″ [1] |
| Apparent magnitude (V) | 6.70 [2] |
| Characteristics | |
| Spectral type | B1.5 Vp [3] |
| U−B color index | −0.71 [2] |
| B−V color index | +0.09 [2] |
| Astrometry | |
| Radial velocity (Rv) | +32.4 [4] km/s |
| Proper motion (μ) |
RA: +1.822
[1]
mas/
yr Dec.: _0.393 [1] mas/ yr |
| Parallax (π) | 2.2820 ± 0.0207 mas [1] |
| Distance | 1,430 ± 10
ly (438 ± 4 pc) |
| Absolute magnitude (MV) | −3.3 [5] |
| Details | |
| Mass | 18±6 [5] M☉ |
| Radius | 5.6±0.8 [5] R☉ |
| Luminosity | 29,500 [5] L☉ |
| Surface gravity (log g) | 4.2±0.1 [5] cgs |
| Temperature | 32,000±1,000 [5] K |
| Rotational velocity (v sin i) | 49.0±0.9 [5] km/s |
| Age | 2.5±0.5 [5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Theta1 Orionis D (θ1 Orionis D) is a member of the Trapezium open cluster that lies within the Orion Nebula. It is a B class blue main sequence star with several faint companions.
θ1 Orionis consists of multiple components, primarily the four stars of the Trapezium cluster ( A, B, C, and D) all within one arc-minute of each other. θ2 Orionis is a more distant grouping of three main stars plus several fainter companions, 1-2 arc-minutes from θ1.
θ1 D itself has a faint optical companion 1.4" away and a spectroscopic companion in a 40-day orbit. Infrared Optical Telescope Array observations suggest another companion at 18.6 mas. [6]
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode: 2002yCat.2237....0D.
- ^ Levenhagen, R. S.; Leister, N. V. (2006). "Spectroscopic analysis of southern B and Be stars". Monthly Notices of the Royal Astronomical Society. 371 (1): 252–262. arXiv: astro-ph/0606149. Bibcode: 2006MNRAS.371..252L. doi: 10.1111/j.1365-2966.2006.10655.x. S2CID 16492030.
- ^ Olivares, J.; Sánchez, L. J.; Ruelas-Mayorga, A.; Allen, C.; Costero, R.; Poveda, A. (2013). "Kinematics of the Orion Trapezium Based on Diffracto-Astrometry and Historical Data". The Astronomical Journal. 146 (5): 106. arXiv: 1310.0769. Bibcode: 2013AJ....146..106O. doi: 10.1088/0004-6256/146/5/106. S2CID 119110490.
- ^ a b c d e f g h Simón-Díaz, S.; Herrero, A.; Esteban, C.; Najarro, F. (2006). "Detailed spectroscopic analysis of the Trapezium cluster stars inside the Orion nebula". Astronomy and Astrophysics. 448 (1): 351–366. arXiv: astro-ph/0510288. Bibcode: 2006A&A...448..351S. doi: 10.1051/0004-6361:20053066. ISSN 0004-6361. S2CID 16445304.
- ^ Grellmann, R.; Preibisch, T.; Ratzka, T.; Kraus, S.; Helminiak, K. G.; Zinnecker, H. (2013). "The multiplicity of massive stars in the Orion Nebula Cluster as seen with long-baseline interferometry". Astronomy & Astrophysics. 550: A82. arXiv: 1301.3045. Bibcode: 2013A&A...550A..82G. doi: 10.1051/0004-6361/201220192. S2CID 6554786.
| Stars |
| ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
|
Star clusters |
| ||||||||||||
| Nebulae |
| ||||||||||||
| Galaxies |
| ||||||||||||
| |||||||||||||