HD 141569

HD 141569

HD 141569 and its two companions taken by the Hubble Space Telescope in 2002
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Libra
Right ascension 15h 49m 57.7483s[1]
Declination −03° 55′ 16.342″[1]
Apparent magnitude (V) 7.12[2]
Characteristics
Spectral type A2 Ve
Astrometry
Proper motion (μ) RA: −17.420(31) mas/yr[1]
Dec.: −19.113(26) mas/yr[1]
Parallax (π)8.9597 ± 0.0293 mas[1]
Distance364 ± 1 ly
(111.6 ± 0.4 pc)
Details
Mass3.1[3] M☉
Luminosity24.2[3] L☉
Temperature10,500[3] K
Age5 million[3] years
Other designations
BD−03° 3833, Gaia DR3 4399438153527026176, HIP 77542, SAO 140789[4]
Database references
SIMBADdata

HD 141569 is an isolated[5] Herbig Ae/Be star[6] of spectral class A2Ve[7] approximately 364 light-years away in the constellation of Libra. The primary star has two red dwarf companions (orbiting each other) at about nine arcseconds. In 1999, a protoplanetary disk was discovered around the star. A gap in the disk led to speculation about a possible extrasolar planet forming in the disk.

In November 2019, researchers studied HD 141569A (pre-main sequence B9.5 star) and made the first polarimetric detection of the inner ring circling the star. This may help better determine essential features of planetary development. According to the researchers, "Considering resolved imaging data from other high-contrast facilities, the HD 1415169A debris disc shapes up to be made of at least three, and potentially four nested rings, with spiral structures on the three spatially resolved rings [...] As such, it is an excellent laboratory for studying dynamically perturbed discs."[8][9]

  1. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  2. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862. ISBN 978-0333750889.
  3. ^ a b c d Cite error: The named reference apj663_1_365 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).
  5. ^ Aarnio, Alicia N.; Weinberger, Alycia J.; Stassun, Keivan G.; Mamajek, Eric E.; James, David J. (2008). "A Survey for A Coeval, Comoving Group Associated with HD 141569". The Astronomical Journal. 136 (6): 2483. arXiv:0809.3289. Bibcode:2008AJ....136.2483A. doi:10.1088/0004-6256/136/6/2483. ISSN 1538-3881. S2CID 119250484.
  6. ^ Mendigutía, I.; Oudmaijer, R. D.; Mourard, D.; Muzerolle, J. (2017-01-11). "The compact Hα emitting regions of the Herbig Ae/Be stars HD 179218 and HD 141569 from CHARA spectro-interferometry". Monthly Notices of the Royal Astronomical Society. 464 (2): 1984–1989. arXiv:1610.00013. Bibcode:2017MNRAS.464.1984M. doi:10.1093/mnras/stw2515. ISSN 0035-8711.
  7. ^ Murphy, Simon J.; Corbally, Christopher J.; Gray, Richard O.; Cheng, Kwang-Ping; Neff, James E.; Koen, Chris; Kuehn, Charles A.; Newsome, Ian; Riggs, Quinlin (2015). "An Evaluation of the Membership Probability of 212 λ Boo Stars. I. A Catalogue". Publications of the Astronomical Society of Australia. 32: e036. arXiv:1508.03633. Bibcode:2015PASA...32...36M. doi:10.1017/pasa.2015.34. ISSN 1323-3580. S2CID 59405545.
  8. ^ Starr, Michelle (2 December 2019). "Astronomers Have Detected a Familiar Feature in a Far-Away Solar System". ScienceAlert.com. Retrieved 2 December 2019.
  9. ^ Bruzzone; et al. (2020). "Imaging the 44 au Kuiper Belt Analog Debris Ring around HD 141569A with GPI Polarimetry". The Astronomical Journal. 159 (2): 53. arXiv:1911.11814. Bibcode:2020AJ....159...53B. doi:10.3847/1538-3881/ab5d2e. S2CID 208309962.