View source for DL Tauri

{{short description|Protostar system with planetary system in the constellation of Taurus}}
{{Sky|04|33|39.0767|+|25|20|38.0980}}
{{Starbox begin}}
{{Starbox image
| image = [[Image:DLTauLightCurve.png|250px]]
| caption = A [[light curve]] for DL Tauri, plotted from ''[[Transiting Exoplanet Survey Satellite|TESS]]'' data<ref name=MAST/>
}}
{{Starbox observe
| constell = [[Taurus (constellation)|Taurus]]
| epoch = J2000
| component1 = DL Tauri
| ra = {{RA|04|33|39.0767}}<ref name=SIMBAD/>
| dec = {{DEC|+25|20|38.0980}}<ref name=SIMBAD/>
| appmag_v = 13.06<ref name=Giannini2019/>
}}
{{Starbox character
| type = [[pre-main-sequence star]]
| class = K7<ref name=Simon2000>{{cite journal |doi=10.1086/317838 |title=Dynamical Masses of T Tauri Stars and Calibration of Pre–Main-Sequence Evolution |year=2000 |last1=Simon |first1=M. |last2=Dutrey |first2=A. |last3=Guilloteau |first3=S. |journal=The Astrophysical Journal |volume=545 |issue=2 |pages=1034–1043 |arxiv=astro-ph/0008370 |bibcode=2000ApJ...545.1034S |s2cid=18064837 }}</ref>
| appmag_1_passband = U
| appmag_1 = 14.04<ref name=SIMBAD/>
| appmag_2_passband = g
| appmag_2 = 12.1368<ref name=EDR3/>
| appmag_3_passband = B
| appmag_3 = 14.59<ref name=SIMBAD/>
| appmag_4_passband = R
| appmag_4 = 11.85<ref name=SIMBAD/>
| variable = [[T Tauri star|T Tau]]<ref name=Simon2000/>
}}
{{Starbox astrometry
| radial_v =
| prop_mo_ra = 9.25{{±|0.02}}
| prop_mo_dec = −18.497{{±|0.017}}
|pm_footnote=<ref name=EDR3/>
| parallax = 6.2525
| p_error = 0.0194
| parallax_footnote = <ref name=EDR3/>
| absmag_v =
}}
{{Starbox detail
|source=
| mass = 0.72{{±|0.11}}<ref name=Simon2000/>
| temperature =4060<ref name=Simon2000/>
|gravity=
| luminosity =0.68<ref name=Simon2000/>
| radius =
|rotation=
| age_myr = 1<ref name=Itoh2008/>
}}
{{Starbox catalog
| names = [[2MASS]] J04333906+2520382, TIC 268444139,  HBC 58, UBV 4371, Gaia DR2 148010281032823552
}}
{{Starbox reference
| Simbad = DL+Tau
}}
{{Starbox end}}
'''DL Tauri''' is a young [[T Tauri star|T Tauri-type]] [[pre-main sequence star]]s in the constellation of [[Taurus (constellation)|Taurus]] about {{val|522|ul=light years}} away, belonging to the [[Taurus Molecular Cloud]]. It is partially obscured by the foreground gas cloud rich in carbon monoxide,<ref name=Simon2000/> and is still accreting mass, producing 0.14 {{Solar_luminosity}} due to release of accretion energy.<ref name=Giannini2019>{{cite journal |arxiv=1909.10392 |doi=10.1051/0004-6361/201936085 |title=GIARPS High-resolution Observations of T Tauri stars (GHOsT) |year=2019 |last1=Giannini |first1=T. |last2=Nisini |first2=B. |last3=Antoniucci |first3=S. |last4=Biazzo |first4=K. |last5=Alcalá |first5=J. |last6=Bacciotti |first6=F. |last7=Fedele |first7=D. |last8=Frasca |first8=A. |last9=Harutyunyan |first9=A. |last10=Munari |first10=U. |last11=Rigliaco |first11=E. |last12=Vitali |first12=F. |journal=Astronomy & Astrophysics |volume=631 |pages=A44 |bibcode=2019A&A...631A..44G |s2cid=202719615 }}</ref> The stellar spectrum shows the lines of ionized oxygen, nitrogen, sulfur and iron.<ref name=Giannini2019/>
==Protoplanetary disk==
Star is surrounded by a massive (0.029{{±|0.003}}&nbsp;{{Solar_mass}}) [[protoplanetary disk]],<ref name=Kwon2015/> which is extensive yet relatively flattened and rich in large grains, indicated a significantly evolved state. With a mass this massive the disk can possibly form a brown dwarf. The area of disk about 100 [[astronomical unit|AU]] from the star may be on the verge of the gravitational instability.<ref name=Kwon2015>{{citation|arxiv=1506.03679|year=2015|title=Resolving Protoplanetary Disks at Millimeter Wavelengths with Carma|doi=10.1088/0004-637X/808/1/102|last1=Kwon|first1=Woojin|last2=Looney|first2=Leslie W.|last3=Mundy|first3=Lee G.|last4=Welch|first4=William J.|journal=The Astrophysical Journal|volume=808|issue=1|page=102|bibcode=2015ApJ...808..102K|s2cid=119286150}}</ref> The disk have a multiple dust rings with poorly resolved gaps between.<ref name=Long2020/>
== Suspected planetary companion ==
The object 2MASS J04333960+2520420, designated DL Tau/cc1 in 2008, is a suspected [[Super-Jupiter|superjovian]] planet with mass about 12{{Jupiter_mass}} on the likely bound orbit around DL Tauri. The object is either a sub-brown dwarf or a low mass brown dwarf or even a low-mass ultra-cool red dwarf star if strongly veiled by accretion disk, which is not unusual for the young star systems.<ref name=Itoh2008>{{cite journal |doi=10.1093/pasj/60.2.209 |title=Near-Infrared Spectroscopy of Faint Companions around Young Stellar Objects Associated with the Taurus Molecular Cloud |year=2008 |last1=Itoh |first1=Yoichi |last2=Tamura |first2=Motohide |last3=Hayashi |first3=Masahiko |last4=Oasa |first4=Yumiko |last5=Hayashi |first5=Saeko S.|author5-link=Saeko Hayashi |last6=Fukagawa |first6=Misato |last7=Kudo |first7=Tomoyuki |last8=Mayama |first8=Satoshi |last9=Ishii |first9=Miki |last10=Pyo |first10=Tae-Soo |last11=Yamashita |first11=Takuya |last12=Morino |first12=Junichi |journal=Publications of the Astronomical Society of Japan |volume=60 |issue=2 |pages=209–218 |bibcode=2008PASJ...60..209I |doi-access=free |hdl=20.500.14094/90001427 |hdl-access=free }}</ref>
{{OrbitboxPlanet begin
| name = DL Tauri
| table_ref =
| period_unit = day
}}
{{OrbitboxPlanet disk
| disk = [[protoplanetary disk]]
| periapsis = 8.18{{±|0.89}}<ref name=Kwon2015/>
| apoapsis = 520<ref name=Simon2000/>
| inclination = 44.33{{±|0.16}}<ref name=Long2020>{{cite journal |arxiv=2006.03120 |doi=10.3847/1538-4357/ab9a54 |title=Dual-wavelength ALMA Observations of Dust Rings in Protoplanetary Disks |year=2020 |last1=Long |first1=Feng |last2=Pinilla |first2=Paola|author2-link= Paola Pinilla |last3=Herczeg |first3=Gregory J. |last4=Andrews |first4=Sean M. |last5=Harsono |first5=Daniel |last6=Johnstone |first6=Doug |last7=Ragusa |first7=Enrico |last8=Pascucci |first8=Ilaria|author8-link=Ilaria Pascucci |last9=Wilner |first9=David J. |last10=Hendler |first10=Nathan |last11=Jennings |first11=Jeff |last12=Liu |first12=Yao |last13=Lodato |first13=Giuseppe |last14=Menard |first14=Francois |last15=Van De Plas |first15=Gerrit |last16=Dipierro |first16=Giovanni |journal=The Astrophysical Journal |volume=898 |issue=1 |page=36 |bibcode=2020ApJ...898...36L |s2cid=219401797 |doi-access=free }}</ref>
}}
{{Orbitbox end}}
== References ==
{{Reflist|refs=
<ref name=EDR3>{{cite Gaia EDR3|148010281032823552}}</ref>
<ref name=SIMBAD>{{cite simbad |title=V* DL Tau|access-date=2021-09-30}}</ref>
<ref name=MAST>{{cite web |title=MAST: Barbara A. Mikulski Archive for Space Telescopes |url=https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html |publisher=Space Telescope Science Institute |access-date=8 December 2021}}</ref>
}}
{{Stars of Taurus}}
[[Category:T Tauri stars]]
[[Category:Circumstellar disks]]
[[Category:Taurus (constellation)]]
[[Category:2MASS objects|J04333906+2520382]]
[[Category: Hypothetical planetary systems]]
[[Category:Objects with variable star designations|Tauri, DL]]