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

By G. Chauvin, Anne-Marie Lagrange, B. Zuckerman, C. Dumas, David Mouillet, Inseok Song, J. Beuzit, P. Lowrance, M. Bessell. 2005

215 citations recorded by the source corpus.

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 4.7 σ , 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 $M_{{\rm Jup}}$ if its age is ~30 Myr. Is AB Pic b a massive planet or a minimum mass brown dwarf?

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/cb55d73bf513f9b52988f09d20136bc9866e328b

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. Michael C. Liu
2. B. Bowler
3. K. Luhman
4. T. Dupuy
5. A. Burgasser
6. Eric Mamajek
7. K. Allers
8. L. Hillenbrand

In Instrumentation

1. Michael C. Liu
2. T. Dupuy
3. K. Luhman
4. B. Bowler
5. A. Burgasser
6. K. Allers
7. Kelle Cruz
8. Jacqueline K. Faherty

Citations in the corpus

• Photometric characterization of exoplanets using angular and spectral differential imaging (2010, methodology): “Over the last decade, a handful of objects close to the planetary mass regime have been imaged with existing instruments, such as 2M 1207 b (Chauvin et al. 2005), DH Tau B (Itoh et al. 2005), GQ Lup b (Neuhäuser et al. 2005), AB Pic b (Chauvin et al. 2005), CHXR 73 B (Luhman et al. 2006), and more…”
• Imaging Extrasolar Giant Planets (2016, background): “Two other substellar companions were discovered in this survey: GSC 08047-00232 B (Chauvin et al. 2005c), also independently found by Neuhäuser et al. (2003), and AB Pic B (Chauvin et al. 2005b), which resides near the deuterium-burning limit.”
• THE HAWAII INFRARED PARALLAX PROGRAM. I. ULTRACOOL BINARIES AND THE L/T TRANSITION, (2012, unknown): “…et al. (2009); (19) Burningham et al. (2008); (20) Burningham et al. (2009); (21) Burningham et al. (2010); (22) Chauvin et al. (2004); (23) Chauvin et al. (2005); (24) Chiu et al. (2006); (25) Close et al. (2002); (26) Costa et al. (2005); (27) Costa et al. (2006); (28) Crifo et al.…”
• The great escape: how exoplanets and smaller bodies desert dying stars (2011, background): “Companions around AB Pic (Chauvin et al. 2005), Oph 11 (Close et al. 2007) and CHXR 73 (Luhman et al. 2006) – all harbour semimajor axis between 200 and 300 au, and those orbiting CT Cha (Schmidt et al. 2008), 1RXS J160929.”
• BANYAN. VII. A NEW POPULATION OF YOUNG SUBSTELLAR CANDIDATE MEMBERS OF NEARBY MOVING GROUPS FROM THE BASS SURVEY (2015, background): “…imaged young planets and brown dwarf companions do not suffer from this potential bias however, and their colors seem consistent with those of isolated young BDs Chauvin et al. 2004, 2005; Barman et al. 2011a; Bonnefoy et al. 2013; Delorme et al. 2013; Bowler et al. 2013; Currie et al. 2014.”
• THE HAWAII INFRARED PARALLAX PROGRAM. II. YOUNG ULTRACOOL FIELD DWARFS (2016, background): “…al. 2015), space-based imaging (Lowrance et al. 1999, 2000; Luhman et al. – 4 – 2007), and ground-based adaptive optics imaging (Metchev & Hillenbrand 2004; Chauvin et al. 2005b,a; Metchev & Hillenbrand 2006; Biller et al. 2010; Wahhaj et al. 2011; Nielsen et al. 2012; Delorme et al. 2013; Bowler…”
• The Gemini Deep Planet Survey (2007, background): “…2006), a∼25 MJup companion 240 AU from the young BD 2M 1101−7732 (Luhman 2004), a∼12 MJup companion 260 AU from the young star AB Pic (Mohanty et al. 2007; Chauvin et al. 2005b), a 7–19MJup companion 240–300 AU from the young BD Oph 1622− 405 (Luhman et al. 2007a; Close et al. 2007; Jayawardhana…”
• DISCOVERY OF A PROBABLE 4–5 JUPITER-MASS EXOPLANET TO HD 95086 BY DIRECT IMAGING (2013, background): “As a result, very few planetary-mass companions have been detected by direct imaging, initially at relatively large separations (≥ 100 AU) around solar-type to low-mass stars (e.g., Chauvin et al. 2005, Béjar et al. 2008, Lafrenière et al. 2008, and Ireland et al. 2011).”
• A NEAR-INFRARED SPECTROSCOPIC STUDY OF YOUNG FIELD ULTRACOOL DWARFS (2013, background): “Two objects in our sample, GSC 08047B (Chauvin et al. 2005a) and AB PicB (Chauvin et al. 2005b), are companions to members of the ∼30 Myr old Tuc–Hor Association.”
• MODEL ATMOSPHERES FOR MASSIVE GAS GIANTS WITH THICK CLOUDS: APPLICATION TO THE HR 8799 PLANETS AND PREDICTIONS FOR FUTURE DETECTIONS (2011, unknown): “1-210524 (∼9 MJ), AB Pic (∼13.5 MJ), and HD 203030b (∼25 MJ) (Chauvin et al. 2004, 2005; Mohanty et al. 2007; Lafreniere et al. 2008, 2010; Ireland et al. 2010; Metchev and Hillenbrand 2006).”
• A probable giant planet imaged in the beta Pictoris disk. VLT/NaCo deep L'-band imaging (2008, background): “Its closeness and location inside theβ Pic disk suggest a formation process by core accretion or disk instabilities rather an binary like formation mechanisms proposed for the companions to 2M1207 and AB Pic (Chauvin et al. 2005a, b).”
• THE GEMINI/NICI PLANET-FINDING CAMPAIGN: THE FREQUENCY OF PLANETS AROUND YOUNG MOVING GROUP STARS (2013, methodology): “…(e.g., Taurus and Upper Sco; Lafrenière et al. 2008; Todorov et al. 2010; Kraus & Ireland 2012), (2) members of nearby young moving groups (ages of 10–300 Myr, e.g., Lagrange et al. 2010; Chauvin et al. 2005a; Marois et al. 2008), and (3) unassociated nearby young stars (e.g., Kalas et al. 2008).”
• NEAR-INFRARED SPECTROSCOPY OF THE EXTRASOLAR PLANET HR 8799 b (2010, background): “…limit (∼13 MJup) are revealing the physical properties of very low mass objects through direct imaging and spectroscopy (e.g., AB Pic B: Chauvin et al. 2005, Bonnefoy et al. 2010; GQ Lup B: Neuhauser et al. 2005, McElwain et al. 2007, Lavigne et al. 2009; see Table 1 of Zuckerman &…”
• Direct Imaging and Spectroscopy of a Planetary-Mass Candidate Companion to a Young Solar Analog (2008, background): “…the lowest mass companions imaged so far all orbit stars younger than ∼30 Myr; several of them (e.g. CHXR 73 B, Luhman et al. 2006; AB Pic B, Chauvin et al. 2005; DH Tau B, Itoh et al. 2005; GQ Lub B, Neuhäuser et al. 2005) have masses slightly above the deuterium burning limit of…”
• The Formation and Early Evolution of Low-Mass Stars and Brown Dwarfs (2012, background): “The former are from Faherty et al. (2012) and the latter consist of the previously discussed companions 2M 1207-3932 B, HR 8799 b, and HN Peg B, as well as AB Pic B (Bonnefoy et al. 2010, Chauvin et al. 2005) and HD 203030 B (Metchev & Hillenbrand 2006).”
• FUNDAMENTAL PARAMETERS AND SPECTRAL ENERGY DISTRIBUTIONS OF YOUNG AND FIELD AGE OBJECTS WITH MASSES SPANNING THE STELLAR TO PLANETARY REGIME (2015, unknown): “…(114) Henry & Kirkpatrick (1990), (115) Liu et al. (2013), (116) Hawkins & Bessell (1988), (117) Looper et al. (2008b), (118) Kirkpatrick et al. (2001b), (119) Dahn et al. (2002), (120) Seifahrt et al. (2010), (121) Schmidt et al. (2007), (122) Scholz et al. (2004), (123) Chauvin et al. (2005).”
• THE PALOMAR/KECK ADAPTIVE OPTICS SURVEY OF YOUNG SOLAR ANALOGS: EVIDENCE FOR A UNIVERSAL COMPANION MASS FUNCTION (2008, background): “…six known L/Ttransition companions (GJ 584C, Kirkpatrick et al. 2001; GJ 337CD, Wilson et al. 2001; Burgasser et al. 2005; 2MASS J1207334–393254B, Chauvin et al. 2005a; HD 203030B, Metchev & Hillenbrand 2006; HN PegB, Luhman et al. 2007a) are likely younger than the 2.9 Gyr model-dependent mean…”
• Discovery of Two T Dwarf Companions with the Spitzer Space Telescope (2006, background): “…G196-3 B (Rebolo et al. 1998), TWA 5 B (Lowrance et al. 1999; Neuhäuser et al. 2000b), HR 7329 B (Lowrance et al. 2000; Guenther et al. 2001), AB Pic B (Chauvin et al. 2005b), HD 49197 B (Metchev & Hillenbrand 2004), 2M 1207-3932 B (Chauvin et al. 2004, 2005a), and HD 203030 B (Metchev &…”
• A COMBINED SUBARU/VLT/MMT 1–5 μm STUDY OF PLANETS ORBITING HR 8799: IMPLICATIONS FOR ATMOSPHERIC PROPERTIES, MASSES, AND FORMATION (2011, unknown): “1210524 (9 MJ), AB Pic (13.5 MJ), and HD 203030b (∼ 25 MJ ) (Chauvin et al. 2004; Lafreniere et al. 2010; Chauvin et al. 2005; Metchev and Hillenbrand 2006).”