| 词条 | LSR J1835+3259 |
| 释义 |
|name=LSR J1835+3259}}{{Starbox observe |epoch=J2000[1] |equinox=J2000[1] |constell=Lyra |ra={{RA|18|35|37.902}}[1] |dec={{DEC|+32|59|54.59}}[1]}}{{Starbox character |class=M8.5[2] |appmag_1_passband=V (USNO filter system) |appmag_1=18.27 ± 0.03[2] |appmag_2_passband=I (USNO filter system) |appmag_2=13.46 ± 0.02[2] |appmag_3_passband=z (USNO filter system) |appmag_3=12.63 ± 0.02[2] |appmag_4_passband=J (2MASS filter system) |appmag_4=10.27 ± 0.03[2] |appmag_5_passband=H (2MASS filter system) |appmag_5=9.58 ± 0.05[2] |appmag_6_passband=Ks (2MASS filter system) |appmag_6=9.15 ± 0.04[2] }}{{Starbox astrometry |radial_v=-10 ± 40[3] |parallax=176.5 |p_error=0.5 |parallax_footnote=[2]}}{{Starbox catalog |names=2MASSI J1835379+325954,[2] 2MASS 1835+32,[2] 2MASS J18353790+3259545,[1] LSR 1835+3259,[3] 2MUCD 11792,[1] [B2006] J183537.9+325955,[1] LSPM J1835+3259,[1] USNO-B1.0 1229-00376318[1] }}{{Starbox reference | Simbad = 2MASS+J18353790%2B3259545 }}{{Starbox end}}LSR J1835+3259 is a nearby brown dwarf star of spectral class M8.5,[2] located in constellation Lyra, the discovery of which was published in 2003,[2][3] and it is the 3rd nearest M-type brown dwarf after DEN 1048-3956 and LP 944-020.[3] DistanceTrigonometric parallax of this object, measured in 2001–2002 with the USNO 61 inch (1.5 m) reflector under US Naval Observatory (USNO) parallax program, is 0.1765 ± 0.0005 arcsec, corresponding to a distance of 5.67 ± 0.02 pc, or 18.48 ± 0.05 ly.[2] CharacteristicsThe first potential extrasolar auroras detected occurred in the atmosphere of LSR J1835+3259. They were found in July 2015 by the Karl G. Jansky Very Large Array in New Mexico by analyzing the emitted radio waves. The potential auroras were probably 1 million times brighter than those ever observed on Earth.[4] The optical emission is mainly red in colour, because the charged particles are interacting with hydrogen in its atmosphere. It is not known what the cause is. Some have speculated that material maybe being stripped off the surface of the brown dwarf via stellar winds to produce its own electrons. Another possible explanation is an as-yet-undetected planet or moon around the dwarf, which is throwing off material to light it up, as is the case with Jupiter and its moon Io.[5] References1. ^1 2 3 4 5 6 7 8 {{cite web | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=2MASS+J18353790%2B3259545 | title =2MASS J18353790+3259545 -- Brown Dwarf (M<0.08solMass) | publisher=Centre de Données astronomiques de Strasbourg | accessdate=2011-10-16}} 2. ^1 2 3 4 5 6 7 8 9 10 11 12 {{cite journal | last=Reid |first=I. Neill |author2=Cruz |author3=Laurie |author4=Liebert |author5=Dahn |author6=Harris |author7=Guetter |author8=Stone |author9=Canzian |author10=Luginbuhl |author11=Levine |author12=Monet |author13=Monet | year=2003 | title=MEETING THE COOL NEIGHBORS. IV. 2MASS 1835+32, A NEWLY DISCOVERED M8.5 DWARF WITHIN 6 PARSECS OF THE SUN | journal=The Astronomical Journal | volume=125 | pages=354–358 | bibcode=2003AJ....125..354R | doi=10.1086/344946}} 3. ^1 2 3 {{cite journal | last=Lepine |first=Sebastien |author2=Rich |author3=Shara | year=2003 | title=Spectroscopy of New High Proper Motion Stars in the Northern Sky. I. New Nearby Stars, New High-Velocity Stars, and an Enhanced Classification Scheme for M Dwarfs | journal=The Astronomical Journal | volume=125 | pages=1598–1622 | bibcode=2003AJ....125.1598L | doi=10.1086/345972 | arxiv=astro-ph/0209284}} 4. ^{{cite web |url=http://news.discovery.com/space/alien-life-exoplanets/monstrous-aurora-detected-beyond-our-solar-system-150729.htm|title=Monstrous Aurora Detected Beyond our Solar System|last1=O'Neill |first1=Ian|date=July 29, 2015|website=news.discovery.com|publisher=Discovery|access-date=July 29, 2015}} 5. ^{{cite web |url=http://www.space.com/30087-alien-auroras-found-beyond-solar-system.html|title=First Alien Auroras Found, Are 1 Million Times Brighter Than Any On Earth|last1=Q. Choi|first1=Charles|date=July 29, 2015|website=space.com|access-date=July 29, 2015}}
External links
3 : M-type brown dwarfs|Lyra (constellation)|2MASS objects |
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