HD 98800

Database links to HD 98800

double double star system
HD 98800

Location of HD 98800

Observation
dates equinox : J2000.0 , epoch : J2000.0

cups

9.3 mag

22.27 mas

Proper movement :

Rec. Share:

-85.40 mas / a

Dec. portion:

-33.10 mas / a

Individual data

Names

A; B.

Observation data:

Right ascension

A.

11 ^h 22 ^m 05.304 ^s

B.

11 ^h 22 ^m 05.544 ^s

declination

A.

−24 ° 46 ′ 39.72 ″

B.

−24 ° 46 ′ 38.28 ″

Apparent brightness

A.

9.7 likes

B.

10.0 mag

Other names
and catalog entries

Cordoba Survey	CD-24 9706
Henry Draper Catalog	HD 58800 [1]
SAO catalog	SAO 179815 [2]
Hipparcos catalog	HIP 55505 [3]
WDS catalog	WDS J11221-2447AB
Further designations:	V * TV Crt • GEN # + 1.00098800J • JCMTSF J112205.4-244638 • 1RXS J112205.4-244632 • ** I 507 • GJ 2084 • 2EUVE J1122-24.7 • 2RXP J112205.4-244632 • ADS 8141 AB • AKARI -IRC-V1 J1122052-244639 • ASAS J112205-2446.4 • ASAS J112205-2446.7 • CCDM J11221-2447AB • CD-24 9706 • CPD-24 4651 • EUVE J1122-24.7 • GLMP 294 • GSC 06654-00219 • IDS 11172-2414 AB • JCMTSE J112205.4-244638 • MCBB 3-84 • PDS 54 • PM J11220-2446 • PMSC 11171-2414 • PPM 258903 • RBS 975 • RX J1122.0-2446 • RX J112205.4-244641 • TWA 4 • UCAC2 21769973 • UCAC4 327-061982 • UGP 267 • WISE J112205.23-244639.4 • YZ 114 8772

HD 98800 (also known as TWA 4, SAO 179815 or Vega / β Pic System ) is a quadruple star system. It consists of two double systems that circle each other. The special thing about it is that the double system HD 98800B is surrounded by a dust disk . Gaps have been found in it, and one puzzles whether these gaps are related to the complexity of the system or whether this indicates the formation of young planets . The dust disk is divided into two areas. The outer area is about 5.9 astronomical units away from the binary star and probably consists of comets or asteroids . The inner area is 1.5 to 2 astronomical units away from the double system. It probably consists of small dust particles. The two systems HD 98800B and HD 98800A are about 50 astronomical units apart. HD 98800 is part of the TW-Hydrae Association .

Web links

Stefan Deiters: Extrasolar Planets. Planets with four suns? At: astronews.com. July 26, 2007, accessed September 20, 2015.
scinexx: Tilted planetary cradle on the pair of stars January 15, 2019
HD98800 SIMBAD entry

Individual evidence

^ Catalog of Compounds of Double and Multiple Stars
↑ Frank J. Low, Dean C. Hines, Glenn Schneider: NICMOS OBSERVATIONS OF THE PRE-MAIN-SEQUENCE PLANETARY DEBRIS SYSTEM HD 98800. (PDF) In: The Astrophysical Journal. June 21, 1999, p. 1 , accessed April 4, 2016 (English).
↑ ^a ^b P. Artymowicz: The Role of Dust in the Formation of Stars . Proceedings of ESO Workshop Held at Garichng, Germany, September 11-15, 1995. Ed .: Hans U. kaufl, Ralf Siebenmorgen. Springer Verlag, Berlin 1996, ISBN 3-540-61462-1 , Vega Type Systems, p. 143 ff ., doi : 10.1007 / 978-3-540-68594-4 ( limited access to Google book search [accessed April 4, 2016]).
↑ ML Sitko, DK Lynch, RW Russell: Silicate emission in the TW Hydrae Association . August 1, 2000, arxiv : astro-ph / 0008025 (English).

[1] Catalog of Compounds of Double and Multiple Stars

[Frank99-2] Frank J. Low, Dean C. Hines, Glenn Schneider: NICMOS OBSERVATIONS OF THE PRE-MAIN-SEQUENCE PLANETARY DEBRIS SYSTEM HD 98800. (PDF) In: The Astrophysical Journal. June 21, 1999, p. 1 , accessed April 4, 2016 (English).

[Käufl-3] P. Artymowicz: The Role of Dust in the Formation of Stars . Proceedings of ESO Workshop Held at Garichng, Germany, September 11-15, 1995. Ed .: Hans U. kaufl, Ralf Siebenmorgen. Springer Verlag, Berlin 1996, ISBN 3-540-61462-1 , Vega Type Systems, p. 143 ff ., doi : 10.1007 / 978-3-540-68594-4 ( limited access to Google book search [accessed April 4, 2016]).

[4] ML Sitko, DK Lynch, RW Russell: Silicate emission in the TW Hydrae Association . August 1, 2000, arxiv : astro-ph / 0008025 (English).