Discovery of two nearby peculiar L dwarfs from the 2MASS proper-motion survey: Young or metal-rich?

Astrophysical Journal

Volumn 686, Issue 1, 2008, Pages 528-541

  Looper, Dagny L ^a,b   Kirkpatrick, J Davy ^b,c   Cutri, Roc M ^c   Barman, Travis ^d   Burgasser, Adam J ^b,e   Cushing, Michael C ^a,f   Roellig, Thomas ^g   McGovern, Mark R ^h   Mclean, Ian S ⁱ   Rice, Emily ⁱ   Swift, Brandon J ^f   Schurr, Steven D ^c  

^a UNIVERSITY OF HAWAII   (United States)

^b Infrared Telescope Facility

^c CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

^d LOWELL OBSERVATORY   (United States)

^e MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

^f UNIVERSITY OF ARIZONA   (United States)

^g NASA AMES RESEARCH CENTER   (United States)

^h Antelope Valley College   (United States)

ⁱ UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Stars: low mass, brown dwarfs; Techniques: spectroscopic

Indexed keywords

EID: 53849092749     PISSN: 0004637X     EISSN: 15384357     Source Type: Journal    
DOI: 10.1086/591025     Document Type: Article

References (59)

1. Allers, K. N., et al. 2007, ApJ, 657, 511
2. Barnard, E. E. 1916, AJ, 29, 181
3. Borysow, A., Jorgensen, U. G., & Zheng, C. 1997, A&A, 324, 185
4. Burgasser, A. J. 2004, ApJ, 614, L73
5. _. 2007, ApJ, 659, 655
6. Burgasser, A. J., Looper, D. L., Kirkpatrick, J. D., Cruz, K. L., & Swift, B. J. 2008, ApJ, 674, 451
7. Burgasser, A. J., Looper, D. L., Kirkpatrick, J. D., & Liu, M. C. 2007, ApJ, 658, 557
8. Burgasser, A. J., et al. 2003, ApJ, 592, 1186
9. Costa, Edgardo, Méndez, R. A., Jao, W.-C., Henry, T. J., Subasavage, J. P., & Ianna, P. A. 2006, AJ, 132, 1234
10. Cruz, K. L., Reid, I. N., Liebert, J., Kirkpatrick, J. D., & Lowrance, P. J. 2003, AJ, 126, 2421
11. Cruz, K. L., et al. 2007, AJ, 133, 439
12. Cushing, M. C., Rayner, J. T., & Vacca, W. D. 2005, ApJ, 623, 1115
13. Cushing, M. C., Vacca, W. D., & Rayner, J. T. 2004, PASP, 116, 362
14. Cushing, M. C., et al. 2006, ApJ, 648, 614
15. Dahn, C. C., et al. 2002, AJ, 124, 1170
16. Deacon, N. R., & Hambly, N. C. 2007, A&A, 468, 163
17. Deacon, N. R., Hambly, N. C., & Cooke, J. A. 2005, A&A, 435, 363
18. Epchtein, N., et al. 1997, Messenger, 87, 27
19. Finch, C. T., Henry, T. J., Subasavage, J. P., Jao, W.-C., & Hambly, N. C. 2007, AJ, 133, 2898
20. Giclas, H. L., Burnham, R., & Thomas, N. G. 1978, Lowell Obs. Bull., 8, 89
21. Hamuy, M., Suntzeff, N. B., Heathcote, S. R., Walker, A. R., Gigoux, P., & Phillips, M. M. 1994, PASP, 106, 566
22. Houck, J. R., et al. 2004, ApJS, 154, 18
23. Innes, R. T. A. 1915, Union Obs. Circ., 30
24. Kashikawa, N., et al. 2002, PASJ, 54, 819
25. Kendall, T. R., Jones, H. R. A., Pinfield, D. J., Pokomy, R. S., Folkes, S., Weights, D., Jenkins, J. S., & Mauron, N. 2007, MNRAS, 374, 445
26. Kirkpatrick, J. D. 2005, ARA&A, 43, 195
27. Kirkpatrick, J. D., Barman, T. S., Burgasser, A. J., McGovern, M. R., McLean, I. S., Tinney, C. G., & Lowrance, P. J. 2006, ApJ, 639, 1120
28. Kirkpatrick, J. D., et al. 1999, ApJ, 519, 802
29. _. 2000, AJ, 120, 447
30. _. 2008, ApJ, submitted
31. Lépine, S. 2008, AJ, 135, 2177
32. Lépine, S., Shara, M. M., & Rich, R. M. 2002, AJ, 124, 1190
33. Lepine, S., Shara, M. M., Rich, R. M., Wittenberg, A., Halmo, M., & Bongiomo, B. 2008, in IAU Symp. 248, A Giant Step: From Milli- to Micro-Arcsecond Astrometry (New York: IAU), 74
34. Looper, D. L., Burgasser, A. J., Kirkpatrick, J. D., & Swift, B. J. 2007a, ApJ, 669, L97
35. Looper, D. L., Gelino, C. R., Burgasser, A. J., & Kirkpatrick, J. D. 2008, ApJ, submitted (arXiv:0803.0544)
36. Looper, D. L., Kirkpatrick, J. D., & Burgasser, A. J. 2007b, AJ, 134, 1162
37. Lucas, P. W., Roche, P. F., Allard, F., & Hauschildt, P. H. 2001, MNRAS, 326, 695
38. Luyten, W. 1979, New Luyten Catalogue of Stars with Proper Motions Larger than Two Tenths of an Arcsecond, Vol. I-II (Minneapolis: Univ. Minnesota)
39. _. 1980, New Luyten Catalogue of Stars with Proper Motions Larger than Two Tenths of an Arcsecond, Vol. III-IV ( Minneapolis: Univ. Minnesota)
40. Martín, E. L., Delfosse, X., Basri, G., Goldman, B., Forveille, T., & Zapatero Osorio, M. R. 1999, AJ, 118, 2466
41. Massey, P., & Gronwall, C. 1990, ApJ, 358, 344
42. McGovern, M. R., Kirkpatrick, J. D., McLean, I. S., Burgasser, A. J., Prato, L., & Lowrance, P. J. 2004, ApJ, 600, 1020
43. McLean, I. S., Graham, J. R., Becklin, E. E., Figer, D. F., Larkin, J. E., Levenson, N. A., & Teplitz, H. I. 2000, Proc. SPIE, 4008, 1048
44. McLean, I. S., McGovern, M. R., Burgasser, A. J., Kirkpatrick, J. D., Prato, L., & Kim, S. S. 2003, ApJ, 596, 561
45. McLean, I. S., et al. 1998, Proc. SPIE, 3354, 566
46. Monet, D. G., et al. 2003, AJ, 125, 984
47. Pokorny, R. S., Jones, H. R. A., Hambly, N. C., & Pinfield, D. J. 2004, A&A, 421, 763
48. Rayner, J. T., Toomey, D. W., Onaka, P. M., Denault, A. J., Stahlberger, W. E., Vacca, W. D., Cushing, M. C., & Wang, S. 2003, PASP, 115, 362
49. Reid, I. N., Cruz, K. L., Kirkpatrick, J. D., Allen, P. R., Mungall, F., Liebert, J., Lowrance, P., & Sweet, A. 2008, AJ, 136, 1290
50. Reid, I. N., Kirkpatrick, J. D., Gizis, J. E., Dahn, C. C., Monet, D. G., Williams, R. J., Liebert, J., & Burgasser, A. J. 2000, AJ, 119, 369
51. Ross, F. E. 1939, AJ, 48, 163
52. Skrutskie, M. F., et al. 2006, AJ, 131, 1163
53. Snowden, S. L., Egger, R., Finkbeiner, D. P., Freyberg, M. J., & Plucinsky, P. P. 1998, ApJ, 493, 715
54. Vacca, W. D., Cushing, M. C., & Rayner, J. T. 2003, PASP, 115, 389
55. Vrba, F. J., Henden, A. A., Luginbuhl, C. B., Guetter, H. H., & Munn, J. A. 2004, AJ, 127, 2948
56. Werner, M. W., et al. 2004, ApJS, 154, 1
57. Wilson, J. C., Miller, N. A., Gizis, J. E., Skrutskie, M. F., Houck, J. R., Kirkpatrick, J. D., Burgasser, A. J., & Monet, D. G. 2003, in IAU Symp. 211, Brown Dwarfs, ed. E. Martín (San Francisco: ASP), 197
58. Wolf, M. 1918, Astron. Nachr., 206, 237
59. York, D. G., et al. 2000, AJ, 120, 1579