RR Telescopii

RR Telescopii

A visual band light curve for RR Telescopii, adapted from Kotnik-Karuza et al. (2006)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Telescopium
Right ascension 20h 04m 18.538s[2]
Declination −55° 43′ 33.15″[2]
Apparent magnitude (V) ≈12 (in 2013)[3]
Characteristics
Evolutionary stage WN3-6.5+M3.5-7[4]
Variable type Symbiotic nova[5]
Astrometry
Proper motion (μ) RA: 3.342±0.305[2] mas/yr
Dec.: −3.225±0.280[2] mas/yr
Distance2,700[6] pc
Details
cool
Mass0.9[7] M☉
Radius457[a]–518[b] R☉
Luminosity7,350 - 9,450[6] L☉
Temperature2,500[8] K
hot
Radius0.08[9] R☉
Luminosity3,500 - 9,000[6] L☉
Surface gravity (log g)6.0[9] cgs
Temperature140,000[6] K
Other designations
Nova Tel 1948, AAVSO 1956-56, IRAS 20003-5552, 2MASS J20041854-5543331
Database references
SIMBADdata

RR Telescopii is a symbiotic nova in the southern constellation Telescopium. It was recorded on photographic survey plates as a faint variable star between photographic magnitude (mpg) 9 to 16.6 from 1889 to 1944. In late 1944 the star began to brighten, increasing by about 7 magnitudes, from mpg ≈ 14 to brighter than 8.[10] Brightening continued with a diminished rate of increase after early 1945, but the overall outburst was not noted until the star was seen at about 6.0, the threshold of naked eye brightness, in July 1948.[11] At that time it was given the designation Nova Telescopii 1948. Since mid-1949 it has declined in brightness slowly, albeit accompanied by some remarkable changes in its spectrum, and as of August 2013 it had faded to visual magnitude around 12.

  1. ^ Cite error: The named reference plotSource was invoked but never defined (see the help page).
  2. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  3. ^ Cite error: The named reference AAVSO was invoked but never defined (see the help page).
  4. ^ Skiff, B. A. (2014). "VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009- )". VizieR On-line Data Catalog. Bibcode:2014yCat....1.2023S.
  5. ^ 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: B/gcvs. Bibcode:2009yCat....102025S.
  6. ^ a b c d Jurkic, T.; Kotnik-Karuza, D. (2012). "Modelling of dust around the symbiotic Mira RR Telescopii during obscuration epochs". Astronomy and Astrophysics. 544: A35. Bibcode:2012A&A...544A..35J. doi:10.1051/0004-6361/201218776.
  7. ^ Cite error: The named reference Jordan1994 was invoked but never defined (see the help page).
  8. ^ Jurkic, T.; Kotnik-Karuza, D. (2007). "Modeling of Dust around RR Tel". Baltic Astronomy. 16: 76. Bibcode:2007BaltA..16...76J.
  9. ^ a b González-Riestra, R.; Cassatella, A.; Selvelli, P. (2012). "Shocked gas in RR Telescopii". Memorie della Societa Astronomica Italiana. 83: 806. Bibcode:2012MmSAI..83..806G.
  10. ^ Mayall, Margaret W. (February 1949). "Recent Variations of RR Telescopii". Harvard Observatory Bulletin. 919 (919): 15–17. Bibcode:1949BHarO.919...15M.
  11. ^ de Kock, R. P. (1948). "RR Tel. (195656)". Monthly Notes of the Astronomical Society of South Africa. 7: 74–75. Bibcode:1948MNSSA...7...74D.


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