AustralieFrV1, PascalFrancis, Corpus, bibRecord, 004849

A companion to AB Pic at the planet/brown dwarf boundary

Identifieur interne : 004849 ( PascalFrancis/Corpus ); précédent : 004848; suivant : 004850

A companion to AB Pic at the planet/brown dwarf boundary

Auteurs : G. Chauvin ; A.-M. Lagrange ; B. Zuckerman ; C. Dumas ; D. Mouillet ; I. Song ; J.-L. Beuzit ; P. Lowrance ; M. S. Bessell

Source :

Astronomy and astrophysics : (Berlin. Print) [ 0004-6361 ] ; 2005.

RBID : Pascal:05-0334995

Descripteurs français

Pascal (Inist)
- Planète, Naine brune, Etoile jeune, Etoile proche, Couleur, Type spectral, Modèle, Photométrie, Age.

English descriptors

KwdEn :
- Age, Brown dwarf stars, Color, Models, Nearby stars, Photometry, Planets, Spectral type, Young stars.

Abstract

We report deep imaging observations of the young, nearby star AB Pic, a member of the large Tucana-Horologium association. We have detected a faint, red source 5.5" South of the star with JHK colors compatible with that of a young substellar L dwarf. Follow-up observations at two additional epochs confirm, with a confidence level of 4.7σ, that the faint red object is a companion to AB Pic rather than it being a stationary background object. A low resolution K-band spectrum indicates an early-L spectral type for the companion. Finally, evolutionary model predictions based on the JHK photometry of AB Pic b indicate a mass of 13 to 14 M_Jup if its age is ∼30 Myr. Is AB Pic b a massive planet or a minimum mass brown dwarf?

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

A01	`01`	`1`		`@0 0004-6361`
A02	`01`			`@0 AAEJAF`
A03		`1`		`@0 Astron. astrophys. : (Berl., Print)`
A05				`@2 438`
A06				`@2 3`
A08	`01`	`1`	`ENG`	`@1 A companion to AB Pic at the planet/brown dwarf boundary`
A11	`01`	`1`		`@1 CHAUVIN (G.)`
A11	`02`	`1`		`@1 LAGRANGE (A.-M.)`
A11	`03`	`1`		`@1 ZUCKERMAN (B.)`
A11	`04`	`1`		`@1 DUMAS (C.)`
A11	`05`	`1`		`@1 MOUILLET (D.)`
A11	`06`	`1`		`@1 SONG (I.)`
A11	`07`	`1`		`@1 BEUZIT (J.-L.)`
A11	`08`	`1`		`@1 LOWRANCE (P.)`
A11	`09`	`1`		`@1 BESSELL (M. S.)`
A14	`01`			`@1 European Southern Observatory @2 Casilla 19001, Santiago @3 CHL @Z 1 aut. @Z 4 aut.`
A14	`02`			`@1 Laboratoire d'Astrophysique, Observatoire de Grenoble, 414 rue de la piscine @2 Saint-Martin-d'Hères @3 FRA @Z 2 aut. @Z 7 aut.`
A14	`03`			`@1 Department of Physics & Astronomy and Center for Astrobiology, University of California, Box 951562 @2 Los Angeles, CA 90095 @3 USA @Z 3 aut. @Z 6 aut.`
A14	`04`			`@1 Laboratoire d'Astrophysique, Observatoire Midi-Pyrénées @2 Tarbes @3 FRA @Z 5 aut.`
A14	`05`			`@1 Spitzer Science Center, Infrared Processing and Analysis Center, MS 220-6 @2 Pasadena, CA 91125 @3 USA @Z 8 aut.`
A14	`06`			`@1 Research School of astronomy and Astrophysics Institue of Advance Studies, Australian National University, Cotter Road, Weston Creek @2 Canberra. ACT 2611 @3 AUS @Z 9 aut.`
A20				`@2 L29-L32`
A21				`@1 2005`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 14176 @5 354000132282760010`
A44				`@0 0000 @1 © 2005 INIST-CNRS. All rights reserved.`
A45				`@0 36 ref.`
A47	`01`	`1`		`@0 05-0334995`
A60				`@1 P @3 LT`
A61				`@0 A`
A64	`01`	`1`		`@0 Astronomy and astrophysics : (Berlin. Print)`
A66	`01`			`@0 FRA`
C01	`01`		`ENG`	@0 We report deep imaging observations of the young, nearby star AB Pic, a member of the large Tucana-Horologium association. We have detected a faint, red source 5.5" South of the star with JHK colors compatible with that of a young substellar L dwarf. Follow-up observations at two additional epochs confirm, with a confidence level of 4.7σ, that the faint red object is a companion to AB Pic rather than it being a stationary background object. A low resolution K-band spectrum indicates an early-L spectral type for the companion. Finally, evolutionary model predictions based on the JHK photometry of AB Pic b indicate a mass of 13 to 14 M_Jup if its age is ∼30 Myr. Is AB Pic b a massive planet or a minimum mass brown dwarf?
C02	`01`	`3`		`@0 001E03`
C03	`01`	`3`	`FRE`	`@0 Planète @5 26`
C03	`01`	`3`	`ENG`	`@0 Planets @5 26`
C03	`02`	`3`	`FRE`	`@0 Naine brune @5 27`
C03	`02`	`3`	`ENG`	`@0 Brown dwarf stars @5 27`
C03	`03`	`3`	`FRE`	`@0 Etoile jeune @5 28`
C03	`03`	`3`	`ENG`	`@0 Young stars @5 28`
C03	`04`	`3`	`FRE`	`@0 Etoile proche @5 29`
C03	`04`	`3`	`ENG`	`@0 Nearby stars @5 29`
C03	`05`	`3`	`FRE`	`@0 Couleur @5 30`
C03	`05`	`3`	`ENG`	`@0 Color @5 30`
C03	`06`	`X`	`FRE`	`@0 Type spectral @5 31`
C03	`06`	`X`	`ENG`	`@0 Spectral type @5 31`
C03	`06`	`X`	`SPA`	`@0 Tipo espectral @5 31`
C03	`07`	`X`	`FRE`	`@0 Modèle @5 32`
C03	`07`	`X`	`ENG`	`@0 Models @5 32`
C03	`07`	`X`	`SPA`	`@0 Modelo @5 32`
C03	`08`	`3`	`FRE`	`@0 Photométrie @5 33`
C03	`08`	`3`	`ENG`	`@0 Photometry @5 33`
C03	`09`	`X`	`FRE`	`@0 Age @5 34`
C03	`09`	`X`	`ENG`	`@0 Age @5 34`
C03	`09`	`X`	`SPA`	`@0 Edad @5 34`
N21				`@1 234`
N44	`01`			`@1 OTO`
N82				`@1 OTO`

Format Inist (serveur)

NO :	PASCAL 05-0334995 INIST
ET :	A companion to AB Pic at the planet/brown dwarf boundary
AU :	CHAUVIN (G.); LAGRANGE (A.-M.); ZUCKERMAN (B.); DUMAS (C.); MOUILLET (D.); SONG (I.); BEUZIT (J.-L.); LOWRANCE (P.); BESSELL (M. S.)
AF :	European Southern Observatory/Casilla 19001, Santiago/Chili (1 aut., 4 aut.); Laboratoire d'Astrophysique, Observatoire de Grenoble, 414 rue de la piscine/Saint-Martin-d'Hères/France (2 aut., 7 aut.); Department of Physics & Astronomy and Center for Astrobiology, University of California, Box 951562/Los Angeles, CA 90095/Etats-Unis (3 aut., 6 aut.); Laboratoire d'Astrophysique, Observatoire Midi-Pyrénées/Tarbes/France (5 aut.); Spitzer Science Center, Infrared Processing and Analysis Center, MS 220-6/Pasadena, CA 91125/Etats-Unis (8 aut.); Research School of astronomy and Astrophysics Institue of Advance Studies, Australian National University, Cotter Road, Weston Creek/Canberra. ACT 2611/Australie (9 aut.)
DT :	Publication en série; Lettre à l'éditeur; Niveau analytique
SO :	Astronomy and astrophysics : (Berlin. Print); ISSN 0004-6361; Coden AAEJAF; France; Da. 2005; Vol. 438; No. 3; L29-L32; Bibl. 36 ref.
LA :	Anglais
EA :	We report deep imaging observations of the young, nearby star AB Pic, a member of the large Tucana-Horologium association. We have detected a faint, red source 5.5" South of the star with JHK colors compatible with that of a young substellar L dwarf. Follow-up observations at two additional epochs confirm, with a confidence level of 4.7σ, that the faint red object is a companion to AB Pic rather than it being a stationary background object. A low resolution K-band spectrum indicates an early-L spectral type for the companion. Finally, evolutionary model predictions based on the JHK photometry of AB Pic b indicate a mass of 13 to 14 M_Jup if its age is ∼30 Myr. Is AB Pic b a massive planet or a minimum mass brown dwarf?
CC :	001E03
FD :	Planète; Naine brune; Etoile jeune; Etoile proche; Couleur; Type spectral; Modèle; Photométrie; Age
ED :	Planets; Brown dwarf stars; Young stars; Nearby stars; Color; Spectral type; Models; Photometry; Age
SD :	Tipo espectral; Modelo; Edad
LO :	INIST-14176.354000132282760010
ID :	05-0334995

Links to Exploration step

Pascal:05-0334995

Le document en format XML

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<front><div type="abstract" xml:lang="en">We report deep imaging observations of the young, nearby star AB Pic, a member of the large Tucana-Horologium association. We have detected a faint, red source 5.5" South of the star with JHK colors compatible with that of a young substellar L dwarf. Follow-up observations at two additional epochs confirm, with a confidence level of 4.7σ, that the faint red object is a companion to AB Pic rather than it being a stationary background object. A low resolution K-band spectrum indicates an early-L spectral type for the companion. Finally, evolutionary model predictions based on the JHK photometry of AB Pic b indicate a mass of 13 to 14 M<sub>Jup</sub>
 if its age is ∼30 Myr. Is AB Pic b a massive planet or a minimum mass brown dwarf?</div>
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<fC01 i1="01" l="ENG"><s0>We report deep imaging observations of the young, nearby star AB Pic, a member of the large Tucana-Horologium association. We have detected a faint, red source 5.5" South of the star with JHK colors compatible with that of a young substellar L dwarf. Follow-up observations at two additional epochs confirm, with a confidence level of 4.7σ, that the faint red object is a companion to AB Pic rather than it being a stationary background object. A low resolution K-band spectrum indicates an early-L spectral type for the companion. Finally, evolutionary model predictions based on the JHK photometry of AB Pic b indicate a mass of 13 to 14 M<sub>Jup</sub>
 if its age is ∼30 Myr. Is AB Pic b a massive planet or a minimum mass brown dwarf?</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001E03</s0>
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<fC03 i1="01" i2="3" l="ENG"><s0>Planets</s0>
<s5>26</s5>
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<fC03 i1="02" i2="3" l="FRE"><s0>Naine brune</s0>
<s5>27</s5>
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<fC03 i1="02" i2="3" l="ENG"><s0>Brown dwarf stars</s0>
<s5>27</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE"><s0>Etoile jeune</s0>
<s5>28</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG"><s0>Young stars</s0>
<s5>28</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE"><s0>Etoile proche</s0>
<s5>29</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG"><s0>Nearby stars</s0>
<s5>29</s5>
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<fC03 i1="05" i2="3" l="FRE"><s0>Couleur</s0>
<s5>30</s5>
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<s5>30</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Type spectral</s0>
<s5>31</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Spectral type</s0>
<s5>31</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Tipo espectral</s0>
<s5>31</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Modèle</s0>
<s5>32</s5>
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<fC03 i1="07" i2="X" l="ENG"><s0>Models</s0>
<s5>32</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Modelo</s0>
<s5>32</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE"><s0>Photométrie</s0>
<s5>33</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG"><s0>Photometry</s0>
<s5>33</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Age</s0>
<s5>34</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Age</s0>
<s5>34</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Edad</s0>
<s5>34</s5>
</fC03>
<fN21><s1>234</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
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<server><NO>PASCAL 05-0334995 INIST</NO>
<ET>A companion to AB Pic at the planet/brown dwarf boundary</ET>
<AU>CHAUVIN (G.); LAGRANGE (A.-M.); ZUCKERMAN (B.); DUMAS (C.); MOUILLET (D.); SONG (I.); BEUZIT (J.-L.); LOWRANCE (P.); BESSELL (M. S.)</AU>
<AF>European Southern Observatory/Casilla 19001, Santiago/Chili (1 aut., 4 aut.); Laboratoire d'Astrophysique, Observatoire de Grenoble, 414 rue de la piscine/Saint-Martin-d'Hères/France (2 aut., 7 aut.); Department of Physics & Astronomy and Center for Astrobiology, University of California, Box 951562/Los Angeles, CA 90095/Etats-Unis (3 aut., 6 aut.); Laboratoire d'Astrophysique, Observatoire Midi-Pyrénées/Tarbes/France (5 aut.); Spitzer Science Center, Infrared Processing and Analysis Center, MS 220-6/Pasadena, CA 91125/Etats-Unis (8 aut.); Research School of astronomy and Astrophysics Institue of Advance Studies, Australian National University, Cotter Road, Weston Creek/Canberra. ACT 2611/Australie (9 aut.)</AF>
<DT>Publication en série; Lettre à l'éditeur; Niveau analytique</DT>
<SO>Astronomy and astrophysics : (Berlin. Print); ISSN 0004-6361; Coden AAEJAF; France; Da. 2005; Vol. 438; No. 3; L29-L32; Bibl. 36 ref.</SO>
<LA>Anglais</LA>
<EA>We report deep imaging observations of the young, nearby star AB Pic, a member of the large Tucana-Horologium association. We have detected a faint, red source 5.5" South of the star with JHK colors compatible with that of a young substellar L dwarf. Follow-up observations at two additional epochs confirm, with a confidence level of 4.7σ, that the faint red object is a companion to AB Pic rather than it being a stationary background object. A low resolution K-band spectrum indicates an early-L spectral type for the companion. Finally, evolutionary model predictions based on the JHK photometry of AB Pic b indicate a mass of 13 to 14 M<sub>Jup</sub>
 if its age is ∼30 Myr. Is AB Pic b a massive planet or a minimum mass brown dwarf?</EA>
<CC>001E03</CC>
<FD>Planète; Naine brune; Etoile jeune; Etoile proche; Couleur; Type spectral; Modèle; Photométrie; Age</FD>
<ED>Planets; Brown dwarf stars; Young stars; Nearby stars; Color; Spectral type; Models; Photometry; Age</ED>
<SD>Tipo espectral; Modelo; Edad</SD>
<LO>INIST-14176.354000132282760010</LO>
<ID>05-0334995</ID>
</server>
</inist>
</record>

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A companion to AB Pic at the planet/brown dwarf boundary

A companion to AB Pic at the planet/brown dwarf boundary

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