T Persei

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T Persei
TPerLightCurve.png
A visual band light curve For T Persei, plotted from AAVSO data [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Perseus
Right ascension 2h 19m 21.87717s [2]
Declination +58° 57′ 40.3455″ [2]
Apparent magnitude  (V)8.34-9.70 [3]
Characteristics
Spectral type M2Iab [4]
U−B color index +2.62 [5]
B−V color index +2.33 [5]
Variable type SRc [3]
Astrometry
Radial velocity (Rv)−40.85 [6]  km/s
Proper motion (μ)RA: −1.237 [2]   mas/yr
Dec.: −0.186 [2]   mas/yr
Parallax (π)0.4119 ± 0.0237 [2]   mas
Distance 2345±55 [7]   pc
Absolute magnitude  (MV)−6.90±0.07 [7]
Details [7]
Mass 9-12  M☉
Radius 510±20  R☉
Luminosity 45,700+4,400
−4,000  L☉
Surface gravity (log g)0.06±0.05  cgs
Temperature 3,750±60  K
Metallicity [Fe/H]−0.35  dex
Other designations
T  Per, HD 14142, HIP  10829, BD+58°439, WDS  J02194+5858, 2MASS  J02192186+5857403, AAVSO  0212+58
Database references
SIMBAD data

T Persei is a red supergiant located in the constellation Perseus. It varies in brightness between magnitudes 8.3 and 9.7 and is considered to be a member of the Double Cluster.

T Persei is a member of the Perseus OB1 association around the h and χ Persei open clusters, around 2 degrees north of the centre of the clusters. It is generally treated as an outlying member of the clusters. [8] It lies half a degree away from S Persei, another red supergiant Double Cluster member.

T Per is a semiregular variable star, whose brightness varies from magnitude 8.34 to 9.7 over a period of 2,430 days. [3] Unlike many red supergiants, it does not appear to have a long secondary period. [4] [9] It is relatively inactive for the red supergiant star, with low mass loss rate 8×10−6  Solar_mass /year and no detectable dust shell. [10]

The Washington Double Star Catalog lists T Persei as having a 9th magnitude companion 0.1  arc-seconds away. This is derived from Hipparcos measurements. However, no other sources report a companion. [11]

Related Research Articles

Omicron Persei Star in the constellation Perseus

Omicron Persei is a triple star system in the constellation of Perseus. From parallax measurements taken during the Hipparcos mission it is approximately 1,100 light-years from the Sun.

Eta Persei Star system in the constellation Perseus

Eta Persei, is a binary star and the 'A' component of a triple star system in the constellation of Perseus. It is approximately 1331 light-years away from Earth.

119 Tauri Star in the constellation Taurus

119 Tauri is a red supergiant star in the constellation Taurus. It is a semiregular variable and its angular diameter has been measured at about 10 mas.

Nu Persei Star in the constellation Perseus

ν Persei, Latinized as Nu Persei, is a single star and a suspected variable in the northern constellation of Perseus. It has a yellow-white hue and is visible to the naked eye with an apparent visual magnitude of 3.80. This object is located approximately 560 light-years from the Sun based on parallax but is drifting closer with a radial velocity of −12 km/s.

S Persei Red supergiant or hypergiant variable star in the constellation Perseus

S Persei is a red supergiant or hypergiant located near the Double Cluster in Perseus, north of the cluster NGC 869. It is a member of the Perseus OB1 association and one of the largest known stars. If placed in our solar system, its photosphere would engulf the orbit of Jupiter. It is also a semiregular variable, a star whose variations are less regular than those of Mira variables.

RW Cephei Star in the constellation Cepheus

RW Cephei is a hypergiant variable star in the constellation Cepheus, at the edge of the Sharpless 132 HII region and close to the small open cluster Berkeley 94. One of the largest stars known, RW Cephei's radius is more than 1,000 times that of the Sun (R☉), thus larger than the orbit of Jupiter.

TX Camelopardalis Star in the constellation Camelopardalis

TX Camelopardalis is a Mira-type variable star in the constellation Camelopardalis. It is a classical long period variable star with pulsational period of 558.7 days. Water masers have been observed around the star.

X Persei Variable star in the constellation Perseus

X Persei is a high-mass X-ray binary system located in the constellation Perseus, approximately 950 parsecs away. It is catalogued as 4U 0352+309 in the final Uhuru catalog of X-ray objects.

RT Carinae Star in the constellation Carina

RT Carinae, also known as CD-58 3538, is a variable star in the Carina Nebula in the constellation Carina. It has a mean apparent magnitude of +8.55.

V424 Lacertae Star in the constellation Lacerta

V424 Lacertae is a red supergiant variable star in the constellation Lacerta. It is a member of the Lacerta OB1 stellar association.

PZ Cassiopeiae Red supergiant star in the constellation Cassiopeia

PZ Cassiopeiae is a red supergiant star located in the Cassiopeia constellation, and a semi-regular variable star.

9 Persei Star in the constellation Perseus

9 Persei is a single variable star in the northern constellation Perseus, located around 4,300 light years away from the Sun. It has the Bayer designation i Persei; 9 Persei is the Flamsteed designation. This body is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 5.17. It is moving closer to the Sun with a heliocentric radial velocity of −15.2 km/s. The star is a member of the Perseus OB1 association of co-moving stars.

10 Persei Star in the constellation Perseus

10 Persei is a blue supergiant star in the constellation Perseus. Its apparent magnitude is 6.26 although it is slightly variable.

5 Persei Star in the constellation Perseus

5 Persei is a star in the northern constellation of Perseus located around 2,950 parsecs (9,600 ly) away from the Sun. It is part of the Perseus OB1 stellar association and lies near the Double Cluster. This object is near the lower limit of visibility to the naked eye with an apparent visual magnitude of +6.35. It is moving closer to the Earth with a heliocentric radial velocity of −34 km/s.

RS Persei Star in the constellation Perseus

RS Persei is a red supergiant variable star located in the Double Cluster in Perseus. The star's apparent magnitude varies from 7.82 to 10.0, meaning it is never visible to the naked eye.

V520 Persei Star in the constellation Perseus

V520 Persei is a blue supergiant member of NGC 869, one of the Perseus Double Cluster open clusters. It is an irregular variable star.

BC Cygni Star in the constellation Cygnus

BC Cygni is a red supergiant and pulsating variable star of spectral type M3.5Ia in the constellation Cygnus.

XX Persei Star in the constellation Perseus

XX Persei is a semiregular variable red supergiant star in the constellation Perseus, between the Double Cluster and the border with Andromeda.

BO Carinae Star in the constellation Carina

BO Carinae, also known as HD 93420, is an irregular variable star in the constellation Carina.

WR 140

WR 140 is a visually moderately bright Wolf-Rayet star placed within the spectroscopic binary star, SBC9 1232, whose primary star is an evolved spectral class O4-5 star. It is located in the constellation of Cygnus, lying in the sky at the centre of the triangle formed by Deneb, γ Cygni and δ Cygni.

References

  1. ↑ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. 1 2 3 4 5 Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics . 649: A1. arXiv: 2012.01533 . Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID   227254300. Gaia EDR3 record for this source at VizieR.
  3. 1 2 3 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  4. 1 2 Kiss, L. L.; Szabó, Gy. M.; Bedding, T. R. (2006). "Variability in red supergiant stars: Pulsations, long secondary periods and convection noise". Monthly Notices of the Royal Astronomical Society. 372 (4): 1721–1734. arXiv: astro-ph/0608438 . Bibcode:2006MNRAS.372.1721K. doi:10.1111/j.1365-2966.2006.10973.x. S2CID   5203133.
  5. 1 2 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. Bibcode:2002yCat.2237....0D.
  6. ↑ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv: astro-ph/0409579 . Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID   17804304.
  7. 1 2 3 Baron, F.; Monnier, J. D.; Kiss, L. L.; Neilson, H. R.; Zhao, M.; Anderson, M.; Aarnio, A.; Pedretti, E.; Thureau, N.; Ten Brummelaar, T. A.; Ridgway, S. T.; McAlister, H. A.; Sturmann, J.; Sturmann, L.; Turner, N. (2014). "Chara/mirc Observations of Two M Supergiants in Perseus Ob1: Temperature, Bayesian Modeling, and Compressed Sensing Imaging". The Astrophysical Journal. 785 (1): 46. arXiv: 1405.4032 . Bibcode:2014ApJ...785...46B. doi:10.1088/0004-637X/785/1/46. S2CID   17085548.
  8. ↑ Gonzalez, Guillermo; Wallerstein, George (2000). "Elemental Abundances in Evolved Supergiants. II. The Young Clusters H and χ Persei". The Astronomical Journal. 119 (4): 1839. Bibcode:2000AJ....119.1839G. doi: 10.1086/301319 .
  9. ↑ Percy, John R.; Sato, Hiromitsu (2009). "Long Secondary Periods in Pulsating Red Supergiant Stars". Journal of the Royal Astronomical Society of Canada. 103 (1): 11. Bibcode:2009JRASC.103...11P.
  10. ↑ Gordon, Michael S.; Humphreys, Roberta M.; Jones, Terry J.; Shenoy, Dinesh; Gehrz, Robert D.; Helton, L. Andrew; Marengo, Massimo; Hinz, Philip M.; Hoffmann, William F. (2017). "Searching for Cool Dust. II. Infrared Imaging of the OH/IR Supergiants, NML Cyg, VX SGR, S per, and the Normal Red Supergiants RS per and T per". The Astronomical Journal. 155 (5): 212. arXiv: 1708.00018 . doi:10.3847/1538-3881/aab961. S2CID   73650032.
  11. ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi: 10.1086/323920 .
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