Microlensig Binaries with Candidate Brown Dwarf Companions: The Astrophysical Journal

I G Shin; C Han; A Gould; A Udalski; T Sumi; M Dominik; J P Beaulieu; Y Tsapras; V Bozza; M K Szymański; M Kubiak; I Soszyński; G Pietrzyński; R Poleski; K Ulaczyk; P Pietrukowicz; S Kozłowski; J Skowron; Ł Wyrzykowski; F Abe; D P Bennett; I A Bond; C S Botzler; M Freeman; A Fukui; K Furusawa; F Hayashi; J B Hearnshaw; S Hosaka; Y Itow; K Kamiya; P M Kilmartin; S Kobara; A Korpela; W Lin; C H Ling; S Makita; K Masuda; Y Matsubara; N Miyake; Y Muraki; M Nagaya; K Nishimoto; K Ohnishi; T Okumura; K Omori; Y C Perrott; N Rattenbury; To Saito; L Skuljan; D J Sullivan; D Suzuki; W L Sweatman; P J Tristram; K Wada; P C M Yock; G W Christie; D L Depoy; S Dong; A Gal-Yam; B S Gaudi; L W Hung; J Janczak; S Kaspi; D Maoz; J McCormick; D McGregor; D Moorhouse; J A Muñoz; T Natusch; C Nelson; R W Pogge; T G Tan; D Polishook; Y Shvartzvald; A Shporer; G Thornley; U Malamud; J C Yee; J Y Choi; Y K Jung; H Park; C U Lee; B G Park; J R Koo; D Bajek; D M Bramich; P Browne; K Horne; S Ipatov; C Snodgrass; I Steele; R Street; K A Alsubai; M J Burgdorf; S Calchi Novati; P Dodds; S Dreizler; X S Fang; F Grundahl; C H Gu; S Hardis; K Harpsøe; T C Hinse; M Hundertmark; J Jessen-Hansen; U G Jørgensen; N Kains; E Kerins; C Liebig; M Lund; M Lundkvist; L Mancini; M Mathiasen; A Hornstrup; M T Penny; S Proft; S Rahvar; D Ricci; G Scarpetta; J Skottfelt; J Southworth; J Surdej; J Tregloan-Reed; O Wertz; F Zimmer; M D Albrow; V Batista; S Brillant; J A R Caldwell; J J Calitz; A Cassan; A Cole; K H Cook; E Corrales; Ch Coutures; S Dieters; D Dominis Prester; J Donatowicz; P Fouqué; J Greenhill; K Hill; M Hoffman; S R Kane; D Kubas; J B Marquette; R Martin; P Meintjes; J Menzies; K R Pollard; K C Sahu; J Wambsganss; A Williams; C Vinter; M Zub

Microlensig Binaries with Candidate Brown Dwarf Companions: The Astrophysical Journal

I G Shin, C Han, A Gould, A Udalski, T Sumi, M Dominik, J P Beaulieu, Y Tsapras, V Bozza, M K Szymański, M Kubiak, I Soszyński, G Pietrzyński, R Poleski, K Ulaczyk, P Pietrukowicz, S Kozłowski, J Skowron, Ł Wyrzykowski, F AbeD P Bennett, I A Bond, C S Botzler, M Freeman, A Fukui, K Furusawa, F Hayashi, J B Hearnshaw, S Hosaka, Y Itow, K Kamiya, P M Kilmartin, S Kobara, A Korpela, W Lin, C H Ling, S Makita, K Masuda, Y Matsubara, N Miyake, Y Muraki, M Nagaya, K Nishimoto, K Ohnishi, T Okumura, K Omori, Y C Perrott, N Rattenbury, To Saito, L Skuljan, D J Sullivan, D Suzuki, W L Sweatman, P J Tristram, K Wada, P C M Yock, G W Christie, D L Depoy, S Dong, A Gal-Yam, B S Gaudi, L W Hung, J Janczak, S Kaspi, D Maoz, J McCormick, D McGregor, D Moorhouse, J A Muñoz, T Natusch, C Nelson, R W Pogge, T G Tan, D Polishook, Y Shvartzvald, A Shporer, G Thornley, U Malamud, J C Yee, J Y Choi, Y K Jung, H Park, C U Lee, B G Park, J R Koo, D Bajek, D M Bramich, P Browne, K Horne, S Ipatov, C Snodgrass, I Steele, R Street, K A Alsubai, M J Burgdorf, S Calchi Novati, P Dodds, S Dreizler, X S Fang, F Grundahl, C H Gu, S Hardis, K Harpsøe, T C Hinse, M Hundertmark, J Jessen-Hansen, U G Jørgensen, N Kains, E Kerins, C Liebig, M Lund, M Lundkvist, L Mancini, M Mathiasen, A Hornstrup, M T Penny, S Proft, S Rahvar, D Ricci, G Scarpetta, J Skottfelt, J Southworth, J Surdej, J Tregloan-Reed, O Wertz, F Zimmer, M D Albrow, V Batista, S Brillant, J A R Caldwell, J J Calitz, A Cassan, A Cole, K H Cook, E Corrales, Ch Coutures, S Dieters, D Dominis Prester, J Donatowicz, P Fouqué, J Greenhill, K Hill, M Hoffman, S R Kane, D Kubas, J B Marquette, R Martin, P Meintjes, J Menzies, K R Pollard, K C Sahu, J Wambsganss, A Williams, C Vinter, M Zub

Research output: Book/Report › Book › peer-review

Abstract

Brown dwarfs are important objects because they may provide a missing link between stars and planets, two populations that have dramatically different formation history. In this paper, we present the candidate binaries with brown dwarf companions that are found by analyzing binary microlensing events discovered during 2004 - 2011 observation seasons. Based on the low mass ratio criterion of q <0.2, we found 7 candidate events, including OGLE-2004-BLG-035, OGLE-2004-BLG-039, OGLE-2007-BLG-006, OGLE-2007-BLG-399/MOA-2007-BLG-334, MOA-2011-BLG-104/OGLE-2011-BLG-0172, MOA-2011-BLG-149, and MOA-201-BLG-278/OGLE-2011-BLG-012N. Among them, we are able to confirm that the companions of the lenses of MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149 are brown dwarfs by determining the mass of the lens based on the simultaneous measurement of the Einstein radius and the lens parallax. The measured mass of the brown dwarf companions are (0.02 +/- 0.01) M_Sun and (0.019 +/- 0.002) M_Sun for MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149, respectively, and both companions are orbiting low mass M dwarf host stars. More microlensing brown dwarfs are expected to be detected as the number of lensing events with well covered light curves increases with new generation searches.

Original language	English
Publisher	Institute of Physics Publishing, Inc
Volume	1208
Publication status	Published - 2012

Publication series

Name	ArXiv e-prints

Keywords

Astrophysics - Solar and Stellar Astrophysics

Access to Document

http://ukads.nottingham.ac.uk/abs/2012arXiv1208.2323S

Cite this

Shin, I. G., Han, C., Gould, A., Udalski, A., Sumi, T., Dominik, M., Beaulieu, J. P., Tsapras, Y., Bozza, V., Szymański, M. K., Kubiak, M., Soszyński, I., Pietrzyński, G., Poleski, R., Ulaczyk, K., Pietrukowicz, P., Kozłowski, S., Skowron, J., Wyrzykowski, Ł., ... Zub, M. (2012). Microlensig Binaries with Candidate Brown Dwarf Companions: The Astrophysical Journal. (ArXiv e-prints). Institute of Physics Publishing, Inc. http://ukads.nottingham.ac.uk/abs/2012arXiv1208.2323S

@book{a150fcf0b2e44debbf9a41bf56146880,

title = "Microlensig Binaries with Candidate Brown Dwarf Companions: The Astrophysical Journal",

abstract = "Brown dwarfs are important objects because they may provide a missing link between stars and planets, two populations that have dramatically different formation history. In this paper, we present the candidate binaries with brown dwarf companions that are found by analyzing binary microlensing events discovered during 2004 - 2011 observation seasons. Based on the low mass ratio criterion of q <0.2, we found 7 candidate events, including OGLE-2004-BLG-035, OGLE-2004-BLG-039, OGLE-2007-BLG-006, OGLE-2007-BLG-399/MOA-2007-BLG-334, MOA-2011-BLG-104/OGLE-2011-BLG-0172, MOA-2011-BLG-149, and MOA-201-BLG-278/OGLE-2011-BLG-012N. Among them, we are able to confirm that the companions of the lenses of MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149 are brown dwarfs by determining the mass of the lens based on the simultaneous measurement of the Einstein radius and the lens parallax. The measured mass of the brown dwarf companions are (0.02 +/- 0.01) M_Sun and (0.019 +/- 0.002) M_Sun for MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149, respectively, and both companions are orbiting low mass M dwarf host stars. More microlensing brown dwarfs are expected to be detected as the number of lensing events with well covered light curves increases with new generation searches.",

keywords = "Astrophysics - Solar and Stellar Astrophysics",

author = "Shin, {I G} and C Han and A Gould and A Udalski and T Sumi and M Dominik and Beaulieu, {J P} and Y Tsapras and V Bozza and Szyma{\'n}ski, {M K} and M Kubiak and I Soszy{\'n}ski and G Pietrzy{\'n}ski and R Poleski and K Ulaczyk and P Pietrukowicz and S Koz{\l}owski and J Skowron and {\L} Wyrzykowski and F Abe and Bennett, {D P} and Bond, {I A} and Botzler, {C S} and M Freeman and A Fukui and K Furusawa and F Hayashi and Hearnshaw, {J B} and S Hosaka and Y Itow and K Kamiya and Kilmartin, {P M} and S Kobara and A Korpela and W Lin and Ling, {C H} and S Makita and K Masuda and Y Matsubara and N Miyake and Y Muraki and M Nagaya and K Nishimoto and K Ohnishi and T Okumura and K Omori and Perrott, {Y C} and N Rattenbury and To Saito and L Skuljan and Sullivan, {D J} and D Suzuki and Sweatman, {W L} and Tristram, {P J} and K Wada and Yock, {P C M} and Christie, {G W} and Depoy, {D L} and S Dong and A Gal-Yam and Gaudi, {B S} and Hung, {L W} and J Janczak and S Kaspi and D Maoz and J McCormick and D McGregor and D Moorhouse and Mu{\~n}oz, {J A} and T Natusch and C Nelson and Pogge, {R W} and Tan, {T G} and D Polishook and Y Shvartzvald and A Shporer and G Thornley and U Malamud and Yee, {J C} and Choi, {J Y} and Jung, {Y K} and H Park and Lee, {C U} and Park, {B G} and Koo, {J R} and D Bajek and Bramich, {D M} and P Browne and K Horne and S Ipatov and C Snodgrass and I Steele and R Street and Alsubai, {K A} and Burgdorf, {M J} and {Calchi Novati}, S and P Dodds and S Dreizler and Fang, {X S} and F Grundahl and Gu, {C H} and S Hardis and K Harps{\o}e and Hinse, {T C} and M Hundertmark and J Jessen-Hansen and J{\o}rgensen, {U G} and N Kains and E Kerins and C Liebig and M Lund and M Lundkvist and L Mancini and M Mathiasen and A Hornstrup and Penny, {M T} and S Proft and S Rahvar and D Ricci and G Scarpetta and J Skottfelt and J Southworth and J Surdej and J Tregloan-Reed and O Wertz and F Zimmer and Albrow, {M D} and V Batista and S Brillant and Caldwell, {J A R} and Calitz, {J J} and A Cassan and A Cole and Cook, {K H} and E Corrales and Ch Coutures and S Dieters and {Dominis Prester}, D and J Donatowicz and P Fouqu{\'e} and J Greenhill and K Hill and M Hoffman and Kane, {S R} and D Kubas and Marquette, {J B} and R Martin and P Meintjes and J Menzies and Pollard, {K R} and Sahu, {K C} and J Wambsganss and A Williams and C Vinter and M Zub",

note = "August 1, 2012 10 pages, 9 figures, 4 tables",

year = "2012",

language = "English",

volume = "1208",

series = "ArXiv e-prints",

publisher = "Institute of Physics Publishing, Inc",

address = "United States",

}

Shin, IG, Han, C, Gould, A, Udalski, A, Sumi, T, Dominik, M, Beaulieu, JP, Tsapras, Y, Bozza, V, Szymański, MK, Kubiak, M, Soszyński, I, Pietrzyński, G, Poleski, R, Ulaczyk, K, Pietrukowicz, P, Kozłowski, S, Skowron, J, Wyrzykowski, Ł, Abe, F, Bennett, DP, Bond, IA, Botzler, CS, Freeman, M, Fukui, A, Furusawa, K, Hayashi, F, Hearnshaw, JB, Hosaka, S, Itow, Y, Kamiya, K, Kilmartin, PM, Kobara, S, Korpela, A, Lin, W, Ling, CH, Makita, S, Masuda, K, Matsubara, Y, Miyake, N, Muraki, Y, Nagaya, M, Nishimoto, K, Ohnishi, K, Okumura, T, Omori, K, Perrott, YC, Rattenbury, N, Saito, T, Skuljan, L, Sullivan, DJ, Suzuki, D, Sweatman, WL, Tristram, PJ, Wada, K, Yock, PCM, Christie, GW, Depoy, DL, Dong, S, Gal-Yam, A, Gaudi, BS, Hung, LW, Janczak, J, Kaspi, S, Maoz, D, McCormick, J, McGregor, D, Moorhouse, D, Muñoz, JA, Natusch, T, Nelson, C, Pogge, RW, Tan, TG, Polishook, D, Shvartzvald, Y, Shporer, A, Thornley, G, Malamud, U, Yee, JC, Choi, JY, Jung, YK, Park, H, Lee, CU, Park, BG, Koo, JR, Bajek, D, Bramich, DM, Browne, P, Horne, K, Ipatov, S, Snodgrass, C, Steele, I, Street, R, Alsubai, KA, Burgdorf, MJ, Calchi Novati, S, Dodds, P, Dreizler, S, Fang, XS, Grundahl, F, Gu, CH, Hardis, S, Harpsøe, K, Hinse, TC, Hundertmark, M, Jessen-Hansen, J, Jørgensen, UG, Kains, N, Kerins, E, Liebig, C, Lund, M, Lundkvist, M, Mancini, L, Mathiasen, M, Hornstrup, A, Penny, MT, Proft, S, Rahvar, S, Ricci, D, Scarpetta, G, Skottfelt, J, Southworth, J, Surdej, J, Tregloan-Reed, J, Wertz, O, Zimmer, F, Albrow, MD, Batista, V, Brillant, S, Caldwell, JAR, Calitz, JJ, Cassan, A, Cole, A, Cook, KH, Corrales, E, Coutures, C, Dieters, S, Dominis Prester, D, Donatowicz, J, Fouqué, P, Greenhill, J, Hill, K, Hoffman, M, Kane, SR, Kubas, D, Marquette, JB, Martin, R, Meintjes, P, Menzies, J, Pollard, KR, Sahu, KC, Wambsganss, J, Williams, A, Vinter, C & Zub, M 2012, Microlensig Binaries with Candidate Brown Dwarf Companions: The Astrophysical Journal. ArXiv e-prints, vol. 1208, Institute of Physics Publishing, Inc. <http://ukads.nottingham.ac.uk/abs/2012arXiv1208.2323S>

TY - BOOK

T1 - Microlensig Binaries with Candidate Brown Dwarf Companions

T2 - The Astrophysical Journal

AU - Shin, I G

AU - Han, C

AU - Gould, A

AU - Udalski, A

AU - Sumi, T

AU - Dominik, M

AU - Beaulieu, J P

AU - Tsapras, Y

AU - Bozza, V

AU - Szymański, M K

AU - Kubiak, M

AU - Soszyński, I

AU - Pietrzyński, G

AU - Poleski, R

AU - Ulaczyk, K

AU - Pietrukowicz, P

AU - Kozłowski, S

AU - Skowron, J

AU - Wyrzykowski, Ł

AU - Abe, F

AU - Bennett, D P

AU - Bond, I A

AU - Botzler, C S

AU - Freeman, M

AU - Fukui, A

AU - Furusawa, K

AU - Hayashi, F

AU - Hearnshaw, J B

AU - Hosaka, S

AU - Itow, Y

AU - Kamiya, K

AU - Kilmartin, P M

AU - Kobara, S

AU - Korpela, A

AU - Lin, W

AU - Ling, C H

AU - Makita, S

AU - Masuda, K

AU - Matsubara, Y

AU - Miyake, N

AU - Muraki, Y

AU - Nagaya, M

AU - Nishimoto, K

AU - Ohnishi, K

AU - Okumura, T

AU - Omori, K

AU - Perrott, Y C

AU - Rattenbury, N

AU - Saito, To

AU - Skuljan, L

AU - Sullivan, D J

AU - Suzuki, D

AU - Sweatman, W L

AU - Tristram, P J

AU - Wada, K

AU - Yock, P C M

AU - Christie, G W

AU - Depoy, D L

AU - Dong, S

AU - Gal-Yam, A

AU - Gaudi, B S

AU - Hung, L W

AU - Janczak, J

AU - Kaspi, S

AU - Maoz, D

AU - McCormick, J

AU - McGregor, D

AU - Moorhouse, D

AU - Muñoz, J A

AU - Natusch, T

AU - Nelson, C

AU - Pogge, R W

AU - Tan, T G

AU - Polishook, D

AU - Shvartzvald, Y

AU - Shporer, A

AU - Thornley, G

AU - Malamud, U

AU - Yee, J C

AU - Choi, J Y

AU - Jung, Y K

AU - Park, H

AU - Lee, C U

AU - Park, B G

AU - Koo, J R

AU - Bajek, D

AU - Bramich, D M

AU - Browne, P

AU - Horne, K

AU - Ipatov, S

AU - Snodgrass, C

AU - Steele, I

AU - Street, R

AU - Alsubai, K A

AU - Burgdorf, M J

AU - Calchi Novati, S

AU - Dodds, P

AU - Dreizler, S

AU - Fang, X S

AU - Grundahl, F

AU - Gu, C H

AU - Hardis, S

AU - Harpsøe, K

AU - Hinse, T C

AU - Hundertmark, M

AU - Jessen-Hansen, J

AU - Jørgensen, U G

AU - Kains, N

AU - Kerins, E

AU - Liebig, C

AU - Lund, M

AU - Lundkvist, M

AU - Mancini, L

AU - Mathiasen, M

AU - Hornstrup, A

AU - Penny, M T

AU - Proft, S

AU - Rahvar, S

AU - Ricci, D

AU - Scarpetta, G

AU - Skottfelt, J

AU - Southworth, J

AU - Surdej, J

AU - Tregloan-Reed, J

AU - Wertz, O

AU - Zimmer, F

AU - Albrow, M D

AU - Batista, V

AU - Brillant, S

AU - Caldwell, J A R

AU - Calitz, J J

AU - Cassan, A

AU - Cole, A

AU - Cook, K H

AU - Corrales, E

AU - Coutures, Ch

AU - Dieters, S

AU - Dominis Prester, D

AU - Donatowicz, J

AU - Fouqué, P

AU - Greenhill, J

AU - Hill, K

AU - Hoffman, M

AU - Kane, S R

AU - Kubas, D

AU - Marquette, J B

AU - Martin, R

AU - Meintjes, P

AU - Menzies, J

AU - Pollard, K R

AU - Sahu, K C

AU - Wambsganss, J

AU - Williams, A

AU - Vinter, C

AU - Zub, M

N1 - August 1, 2012 10 pages, 9 figures, 4 tables

PY - 2012

Y1 - 2012

N2 - Brown dwarfs are important objects because they may provide a missing link between stars and planets, two populations that have dramatically different formation history. In this paper, we present the candidate binaries with brown dwarf companions that are found by analyzing binary microlensing events discovered during 2004 - 2011 observation seasons. Based on the low mass ratio criterion of q <0.2, we found 7 candidate events, including OGLE-2004-BLG-035, OGLE-2004-BLG-039, OGLE-2007-BLG-006, OGLE-2007-BLG-399/MOA-2007-BLG-334, MOA-2011-BLG-104/OGLE-2011-BLG-0172, MOA-2011-BLG-149, and MOA-201-BLG-278/OGLE-2011-BLG-012N. Among them, we are able to confirm that the companions of the lenses of MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149 are brown dwarfs by determining the mass of the lens based on the simultaneous measurement of the Einstein radius and the lens parallax. The measured mass of the brown dwarf companions are (0.02 +/- 0.01) M_Sun and (0.019 +/- 0.002) M_Sun for MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149, respectively, and both companions are orbiting low mass M dwarf host stars. More microlensing brown dwarfs are expected to be detected as the number of lensing events with well covered light curves increases with new generation searches.

AB - Brown dwarfs are important objects because they may provide a missing link between stars and planets, two populations that have dramatically different formation history. In this paper, we present the candidate binaries with brown dwarf companions that are found by analyzing binary microlensing events discovered during 2004 - 2011 observation seasons. Based on the low mass ratio criterion of q <0.2, we found 7 candidate events, including OGLE-2004-BLG-035, OGLE-2004-BLG-039, OGLE-2007-BLG-006, OGLE-2007-BLG-399/MOA-2007-BLG-334, MOA-2011-BLG-104/OGLE-2011-BLG-0172, MOA-2011-BLG-149, and MOA-201-BLG-278/OGLE-2011-BLG-012N. Among them, we are able to confirm that the companions of the lenses of MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149 are brown dwarfs by determining the mass of the lens based on the simultaneous measurement of the Einstein radius and the lens parallax. The measured mass of the brown dwarf companions are (0.02 +/- 0.01) M_Sun and (0.019 +/- 0.002) M_Sun for MOA-2011-BLG-104/OGLE-2011-BLG-0172 and MOA-2011-BLG-149, respectively, and both companions are orbiting low mass M dwarf host stars. More microlensing brown dwarfs are expected to be detected as the number of lensing events with well covered light curves increases with new generation searches.

KW - Astrophysics - Solar and Stellar Astrophysics

M3 - Book

VL - 1208

T3 - ArXiv e-prints

BT - Microlensig Binaries with Candidate Brown Dwarf Companions

PB - Institute of Physics Publishing, Inc

ER -

Microlensig Binaries with Candidate Brown Dwarf Companions: The Astrophysical Journal

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