WISE 1828+2650: Difference between revisions

WISEPA J182831.08+265037.8
	; Infrared image from WISE satellite. WISE 1828+2650 is circled green dot at the centre.
Observation data; Epoch MJD 55467.61 Equinox J2000
Constellation	Template:Constel
Right ascension	18h 28m 31.10s
Declination	26° 50′ 37.79″
Characteristics
Spectral type	≥Y2
Apparent magnitude (J (MKO filter system))	23.57 ± 0.35
Apparent magnitude (H (MKO filter system))	22.85 ± 0.24
Astrometry
Proper motion (μ)	RA: 1078 ± 327 mas/yr ; Dec.: 118 ± 409 mas/yr
Parallax (π)	122 ± 13 mas
Distance	approx. 27 ly ; (approx. 8.2 pc)
Details
Temperature	≤300 K
Other designations
	WISEPA J182831.08+265037.8; WISEP J1828+2650; WISE J1828+2650; WISE 1828+2650

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WISEPA J182831.08+265037.8 (designation is abbreviated to WISE 1828+2650) is a brown dwarf of spectral class ≥Y2,^[2] located in constellation Template:Constel at approximately 27 light-years from Earth.^[2]^[3] It is the "archetypal member" of the Y spectral class.^[4]

Discovery

WISE 1828+2650 was discovered in 2011 from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite — NASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011. WISE 1828+2650 has two discovery papers: Kirkpatrick et al. (2011) and Cushing et al. (2011), however, basically with the same authors and published nearly simultaneously.^[1]^[4] Kirkpatrick et al. presented discovery of 98 new found by WISE brown dwarf systems with components of spectral types M, L, T and Y, among which also was WISE 1828+2650 — coolest of them.^[1]^{[note 1]} Cushing et al. presented discovery of seven brown dwarfs — one of T9.5 type, and six of Y-type — first members of the Y spectral class, ever discovered and spectroscopically confirmed, including "archetypal member" of the Y spectral class — WISE 1828+2650.^[4] This seven objects are also the faintest seven of 98 brown dwarfs, presented in Kirkpatrick et al. (2011).^[1]

Spectral class

With a temperature below 300 K^[4], WISE 1828+2650 is currently the coolest known brown dwarf. It has been assigned the latest known spectral class (≥Y2,^[2] initially estimated as >Y0^[4]).

Distance

Initially (in 2011) photometric distance estimate of this object was <9.4 pc (<30.7 ly).^[1] In 2012 was published its trigonometric parallax: 0.122 ± 0.013 arcsecond, corresponding to a distance 8.2^+1.0
_−0.8 pc, or 26.7^+3.2
_−2.6 ly.^[2]^[3]

WISE 1828+2650 distance estimates

Source	Parallax, mas	Distance, pc	Distance, ly	Ref.
Kirkpatrick et al., 2011, Table 6		<9.4	<30.7	^[1]
Beichman et al., 2012	122 ± 13	8.2^+1.0 _−0.8	26.7^+3.2 _−2.6	^[3]^[2]

Non-trigonometric distance estimates are marked in italic. The most precise estimate is marked in bold.

Notes

^ This 98 brown dwarf systems are only among first, not all brown dwarf systems, discovered from data, collected by WISE: six discoveries were published earlier (however, also listed in Kirkpatrick et al. (2011)) in Mainzer et al. (2011) and Burgasser et al. (2011), and the other discoveries were published later.

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p Cite error: The named reference Kirkpatrick2011 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f ^g Cite error: The named reference Kirkpatrick2012 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference Beichman2012 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f ^g ^h Cite error: The named reference Cushing2011 was invoked but never defined (see the help page).

Cite error: A list-defined reference with the name "2011ApJ...743...50C" has been invoked, but is not defined in the <references> tag (see the help page).
Cite error: A list-defined reference with the name "Cushing2011" has been invoked, but is not defined in the <references> tag (see the help page).
Cite error: A list-defined reference with the name "2011ApJS..197...19K" has been invoked, but is not defined in the <references> tag (see the help page).
Cite error: A list-defined reference with the name "Kirkpatrick2011" has been invoked, but is not defined in the <references> tag (see the help page).
Cite error: A list-defined reference with the name "2012ApJ...753..156K" has been invoked, but is not defined in the <references> tag (see the help page).
Cite error: A list-defined reference with the name "Kirkpatrick2012" has been invoked, but is not defined in the <references> tag (see the help page).
Cite error: A list-defined reference with the name "Beichman et al. (2012)" has been invoked, but is not defined in the <references> tag (see the help page).

Cite error: A list-defined reference with the name "Beichman2012" has been invoked, but is not defined in the <references> tag (see the help page).

External links

Choi, Charles Q. (August 26, 2011). "Y dwarf star? Because they're cool, that's Y!". Space.com. Retrieved August 31, 2011.
NASA news release
Science news
Infrared image of WISE 1828+2650 at Astronomy Picture of the Day, 2011 August 30
Solstation.com (New Objects within 20 light-years)

This star-related article is a stub. You can help Wikipedia by expanding it.

[note_1-5] This 98 brown dwarf systems are only among first, not all brown dwarf systems, discovered from data, collected by WISE: six discoveries were published earlier (however, also listed in Kirkpatrick et al. (2011)) in Mainzer et al. (2011) and Burgasser et al. (2011), and the other discoveries were published later.

[Kirkpatrick2011-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p Cite error: The named reference Kirkpatrick2011 was invoked but never defined (see the help page).

[Kirkpatrick2012-2] ^ ^a ^b ^c ^d ^e ^f ^g Cite error: The named reference Kirkpatrick2012 was invoked but never defined (see the help page).

[Beichman2012-3] Cite error: The named reference Beichman2012 was invoked but never defined (see the help page).

[Cushing2011-4] ^ ^a ^b ^c ^d ^e ^f ^g ^h Cite error: The named reference Cushing2011 was invoked but never defined (see the help page).

[1]

[2]

[3]

[4]

[note 1]

@@ Line 1: / Line 1: @@
-{{Sky|18|28|31.08|+|26|50|37.8|26.7}}
+{{Sky|18|28|31.10|+|26|50|37.79|26.7}}
 {{Starbox begin
 | name=WISEPA J182831.08+265037.8}}
@@ Line 7: / Line 7: @@
 }}
 {{Starbox observe
+| epoch=[[Modified_Julian_date|MJD]] 55467.61{{r|Kirkpatrick2011}}
-| epoch=[[J2000]]<ref name="Kirkpatrick2011v1"/>
-| equinox=[[J2000]]<ref name="Kirkpatrick2011v1"/>
+| equinox=[[J2000]]{{r|Kirkpatrick2011}}
 | constell={{Constel|Lyr}}
-| ra={{RA|18|28|31.08}}<ref name="Kirkpatrick2011v1">{{cite arXiv
+| ra={{RA|18|28|31.10}}{{r|Kirkpatrick2011}}
+| dec={{DEC|26|50|37.79}}{{r|Kirkpatrick2011}}}}
-  |last=Kirkpatrick |first=J. Davy
-  |coauthors=Cushing, Michael C.; Gelino, Christopher R.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Mainzer, A.; Eisenhardt, Peter R.; McLean, Ian S.; Thompson, Maggie A.; Bauer, James M.; Benford, Dominic J.; Bridge, Carrie R.; Lake, Sean E.; Petty, Sara M.; Stanford, S. A.; Tsai, Chao-Wei; Bailey, Vanessa; Beichman, Charles A.; Bloom, Joshua S.; Bochanski, John J.; Burgasser, Adam J.; Capak, Peter L.; Cruz, Kelle L.; Hinz, Philip M.; Kartaltepe, Jeyhan S.; Knox, Russell P.; Manohar, Swarnima; Masters, Daniel; Morales-Calderón, Maria; Prato, Lisa A.; Rodigas, Timothy J.; Salvato, Mara; Schurr, Steven D.; Scoville, Nicholas Z.; Simcoe, Robert A.; Stapelfeldt, Karl R.; Stern, Daniel; Stock, Nathan D.; Vacca, William D.
-  |title=The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)
-  |year=2011
-  |eprint=1108.4677
-  |version=v1
-  |class=astro-ph.SR
-  |accessdate=2011-08-23
-  |doi=10.1088/0067-0049/197/2/19
-  |bibcode=2011ApJS..197...19K}}</ref>
-| dec={{DEC|26|50|37.8}}<ref name="Kirkpatrick2011v1"/>}}
 {{Starbox character
-|class=≥Y2<ref name="Kirkpatrick2012">{{cite arXiv
+|class=≥Y2{{r|Kirkpatrick2012}}
-  |last=Kirkpatrick |first=J. Davy
-  |coauthors=Gelino, Christopher R.; Cushing, Michael C.; Mace, Gregory N.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Eisenhardt, Peter R.; McLean, Ian S.; Mainzer, Amanda K.; Burgasser, Adam J.; Tinney, C. G.; Parker, Stephen; Salter, Graeme
-  |year=2012
-  |title=Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function
-  |eprint=1205.2122
-  |version=v1
-  |class=astro-ph.SR
-  |accessdate=2012-05-09
-  |bibcode=2012arXiv1205.2122K}}</ref>
 |appmag_1_passband=J <small>([[Mauna Kea Observatory|MKO]] filter system)</small>
-|appmag_1=23.57 ± 0.35<ref name="Kirkpatrick2011v1"/>
+|appmag_1=23.57 ± 0.35{{r|Kirkpatrick2011}}
 |appmag_2_passband=H <small>([[Mauna Kea Observatory|MKO]] filter system)</small>
-|appmag_2=22.85 ± 0.24<ref name="Kirkpatrick2011v1"/>}}
+|appmag_2=22.85 ± 0.24{{r|Kirkpatrick2011}}}}
 {{Starbox astrometry
-|prop_mo_ra=1078 ± 327<ref name="Kirkpatrick2011v1"/>
+|prop_mo_ra=1078 ± 327{{r|Kirkpatrick2011}}
-|prop_mo_dec=118 ± 409<ref name="Kirkpatrick2011v1"/>
+|prop_mo_dec=118 ± 409{{r|Kirkpatrick2011}}
 |parallax=122
 |p_error=13
-|parallax_footnote=<ref name="Beichman2012"/><ref name="Kirkpatrick2012"/>}}
+|parallax_footnote={{r|Kirkpatrick2012|Beichman2012}}}}
 {{Starbox detail
-| temperature=≤300<ref name="Cushing2011v1">{{cite arXiv
+| temperature=≤300{{r|Cushing2011}}
+}}
-  |last=Cushing |first=Michael C.
-  |coauthors=Kirkpatrick, J. Davy; Gelino, Christopher R.; Griffith, Roger L.; Skrutskie, Michael F.; Mainzer, A.; Marsh, Kenneth A.; Beichman, Charles A.; Burgasser, Adam J.; Prato, Lisa A.; Simcoe, Robert A.; Marley, Mark S.; Saumon, D.; Freedman, Richard S.; Eisenhardt, Peter R.; Wright, Edward L.
-  |title=The Discovery of Y Dwarfs using Data from the Wide-field Infrared Survey Explorer (WISE)
-  |year=2011
-  |eprint=1108.4678
-  |version=v1
-  |class=astro-ph.SR
-  |accessdate=2011-08-23
-  |doi=10.1088/0004-637X/743/1/50
-  |bibcode=2011ApJ...743...50C}}</ref> }}
 {{Starbox catalog
+| names=[[Wide-field Infrared Survey Explorer|WISEPA]] J182831.08+265037.8{{r|Kirkpatrick2011}}<br/>[[Wide-field Infrared Survey Explorer|WISEP]] J1828+2650{{r|Cushing2011}}<br/>[[Wide-field Infrared Survey Explorer|WISE]] J1828+2650{{r|Kirkpatrick2011}}<br/>[[Wide-field Infrared Survey Explorer|WISE]] 1828+2650{{r|Kirkpatrick2011}}}}
-| names= WISEPA J182831.08+265037.8<ref name="Kirkpatrick2011v1"/>, WISEP J1828+2650<ref name="Cushing2011v1"/>, WISE J1828+2650<ref name="Kirkpatrick2011v1"/>}}
 {{Starbox end}}
-'''WISE 1828+2650''' (full designation is '''WISEPA J182831.08+265037.8''') is the coolest known [[brown dwarf]] located in south-west corner of constellation {{Constel|Lyr}}. It is the "archetypal member" of the Y spectral class.<ref name="Cushing2011v1"/>
+'''WISEPA J182831.08+265037.8''' (designation is abbreviated to '''WISE 1828+2650''') is a [[brown dwarf]] of [[spectral class]] ≥Y2,{{r|Kirkpatrick2012}} located in constellation {{Constel|Lyr}} at approximately 27 [[light-year]]s from [[Earth]].{{r|Kirkpatrick2012|Beichman2012}} It is the "archetypal member" of the Y spectral class.{{r|Cushing2011}}
+==Discovery==
+'''WISE 1828+2650''' was discovered in 2011 from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite — NASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011. WISE 1828+2650 has two discovery papers: ''Kirkpatrick et al. (2011)'' and ''Cushing et al. (2011)'', however, basically with the same authors and published nearly simultaneously.{{r|Kirkpatrick2011|Cushing2011}} ''[[J. Davy Kirkpatrick|Kirkpatrick]] et al.'' presented discovery of 98 new found by WISE [[brown dwarf]] systems with components of [[spectral type]]s M, L, T and Y, among which also was WISE 1828+2650 — coolest of them.{{r|Kirkpatrick2011}}<ref name="note 1" group="note">This 98 brown dwarf systems are only among first, not all brown dwarf systems, discovered from data, collected by WISE: six discoveries were published earlier (however, also listed in Kirkpatrick et al. (2011)) in Mainzer et al. (2011) and Burgasser et al. (2011), and the other discoveries were published later.</ref> ''Cushing et al.'' presented discovery of seven brown dwarfs — one of T9.5 type, and six of Y-type — first members of the Y spectral class, ever discovered and spectroscopically confirmed, including "archetypal member" of the Y spectral class — [[WISE 1828+2650]].{{r|Cushing2011}} This seven objects are also the faintest seven of 98 brown dwarfs, presented in ''Kirkpatrick et al. (2011)''.{{r|Kirkpatrick2011}}
 ==Spectral class==
+With a temperature below 300 [[Kelvin|K]]{{r|Cushing2011}}, WISE 1828+2650 is currently the coolest known brown dwarf. It has been assigned the latest known [[spectral class]] (≥Y2,{{r|Kirkpatrick2012}} initially estimated as >Y0{{r|Cushing2011}}).
-It is one of six Y-type brown dwarfs (along with [[WISE 0410+1502]], [[WISE 1405+5534]], [[WISE 1541-2250]], [[WISE 1738+2732]] and [[WISE 2056+1459]]) among 106 brown dwarfs (counting components of two binary systems<ref name="Gelino2011v1">{{cite arXiv
-  |last=Gelino |Christopher R.
-  |coauthors=Kirkpatrick, J. Davy; Cushing, Michael C.; Eisenhardt, Peter R.; Griffith, Roger L.; Mainzer, Amanda K.; Marsh, Kenneth A.; Skrutskie, Michael F.; Wright, Edward L.
-  |title=WISE Brown Dwarf Binaries: The Discovery of a T5+T5 and a T8.5+T9 System
-  |year=2011
-  |eprint=1106.3142
-  |version=v1
-  |class=astro-ph.SR
-  |doi=10.1088/0004-6256/142/2/57
-  |bibcode=2011AJ....142...57G}}</ref>), discovered in 2011 by the [[Wide-field Infrared Survey Explorer]]. With a temperature below 300 [[Kelvin|K]]<ref name="Cushing2011v1"/>, it is currently the coolest known brown dwarf. It has been assigned the latest known [[spectral class]] (≥Y2,<ref name="Kirkpatrick2012"/> initially estimated as >Y0<ref name="Cushing2011v1"/>) despite the discovery of 8 more Y-type brown dwarf stars in 2012<ref name="Kirkpatrick2012"/>.
 ==Distance==
+Initially (in 2011) photometric distance estimate of this object was <9.4 [[parsec|pc]] (<30.7 [[light-year|ly]]).{{r|Kirkpatrick2011}} In 2012 was published its [[parallax|trigonometric parallax]]: 0.122 ± 0.013 [[arcsec]]ond, corresponding to a distance 8.2{{±|1.0|0.8}} [[parsec|pc]], or 26.7{{±|3.2|2.6}} [[light-year|ly]].{{r|Kirkpatrick2012|Beichman2012}}
+'''WISE 1828+2650 distance estimates'''
-Initially (in 2011) photometric distance estimate of this object was <9.4 [[parsec|pc]] (<30.7 [[light-year|ly]]).<ref name="Kirkpatrick2011v1"/> In 2012 was published its [[parallax|trigonometric parallax]]: 0.122 ± 0.013 [[arcsec]]ond, corresponding to a distance 8.2{{±|1.0|0.8}} [[parsec|pc]], or 26.7{{±|3.2|2.6}} [[light-year|ly]].<ref name="Beichman2012">Beichman et al., in prep.</ref><ref name="Kirkpatrick2012"/>
-'''WISE 0410+1502 distance estimates'''
 {| class="wikitable"
@@ Line 83: / Line 48: @@
 ! Source !! Parallax, [[milliarcsecond|mas]] !! Distance, [[parsec|pc]] !! Distance, [[light-year|ly]] !! Ref.
 |-
-| Kirkpatrick et al., 2011, Table 6 ||  || ''<9.4'' || ''<30.7'' || <ref name="Kirkpatrick2011v1"/>
+| Kirkpatrick et al., 2011, Table 6 ||  || ''<9.4'' || ''<30.7'' || {{r|Kirkpatrick2011}}
 |-
-| Beichman et al., 2012 || 122 ± 13 || 8.2{{±|1.0|0.8}} || 26.7{{±|3.2|2.6}} || <ref name="Beichman2012"/><ref name="Kirkpatrick2012"/>
+| Beichman et al., 2012 || '''122 ± 13''' || '''8.2{{±|1.0|0.8}}''' || '''26.7{{±|3.2|2.6}}''' || {{r|Beichman2012|Kirkpatrick2012}}
 |}
-<small>Non-trigonometric distance estimates are marked in ''italic''.</small>
+<small>Non-trigonometric distance estimates are marked in ''italic''. The most precise estimate is marked in '''bold'''.</small>
 ==See also==
+The other six discoveries of brown dwarfs, published in Cushing et al. (2011):{{r|Cushing2011}}
-*[[WISE 1541-2250]]
+*[[WISEPC J014807.25-720258.7|WISE 0148-7202]] (T9.5)
+*[[WISEPA J041022.71+150248.5|WISE 0410+1502]] (Y0)
+*[[WISEPC J140518.40+553421.4|WISE 1405+5534]] (Y0 (pec?))
+*[[WISEPA J154151.66-225025.2|WISE 1541-2250]] (Y0.5)
+*[[WISEPA J173835.53+273258.9|WISE 1738+2732]] (Y0)
+*[[WISEPC J205628.90+145953.3|WISE 2056+1459]] (Y0)
+==Notes==
+{{reflist|colwidth=30em|group=note}}
 ==References==
-{{reflist|colwidth=30em}}
+{{reflist|colwidth=30em|refs=
+{{rr|2011ApJ...743...50C|Cushing2011}}
+{{rr|2011ApJS..197...19K|Kirkpatrick2011}}
+{{rr|2012ApJ...753..156K|Kirkpatrick2012}}
+{{rr|Beichman et al. (2012)|Beichman2012}}
+}}
 ==External links==
 *{{cite news|last=Choi|first=Charles Q.|title=Y dwarf star? Because they're cool, that's Y!|publisher=[[Space.com]]|date=August 26, 2011|url=http://www.space.com/12714-coldest-failed-stars-brown-dwarfs-wise.html|accessdate=August 31, 2011}}

Observation data Epoch MJD 55467.61^[1] Equinox J2000^[1]
Infrared image from WISE satellite. WISE 1828+2650 is circled green dot at the centre.
Constellation	Template:Constel
Right ascension	18^h 28^m 31.10^s^[1]
Declination	26° 50′ 37.79″^[1]
Characteristics
Spectral type	≥Y2^[2]
Apparent magnitude (J (MKO filter system))	23.57 ± 0.35^[1]
Apparent magnitude (H (MKO filter system))	22.85 ± 0.24^[1]
Astrometry

Proper motion (μ)	RA: 1078 ± 327^[1] mas/yr Dec.: 118 ± 409^[1] mas/yr
Parallax (π)	122 ± 13 mas^[2]^[3]
Distance	approx. 27 ly (approx. 8.2 pc)

Details

Temperature	≤300^[4] K

Other designations
WISEPA J182831.08+265037.8^[1] WISEP J1828+2650^[4] WISE J1828+2650^[1] WISE 1828+2650^[1]