Protostars, dust globules, and a Herbig-Haro object in the LMC superbubble N51D

被引:29
作者
Chu, YH
Gruendl, RA
Chen, CHR
Whitney, BA
Gordon, KD
Looney, LW
Clayton, GC
Dickel, JR
Dunne, BC
Points, SD
Smith, RC
Williams, RM
机构
[1] Univ Illinois, Dept Astron, Urbana, IL 61801 USA
[2] Space Sci Inst, Boulder, CO 80301 USA
[3] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
[4] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
[5] Cerro Tololo Interamer Observ, La Serena, Chile
关键词
HII regions; ISM : individual ( LH alpha 120-N51D); Magellanic Clouds;
D O I
10.1086/498943
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using Spitzer Space Telescope and Hubble Space Telescope observations of the superbubble N51D, we have identified three young stellar objects ( YSOs) in dust globules and made the first detection of a Herbig-Haro object outside the Galaxy. The spectral energy distributions of these YSOs suggest young massive stars with disk, envelope, and outflow cavities. The interstellar conditions are used to assess whether the star formation was spontaneous or induced by external pressure.
引用
收藏
页码:L189 / L192
页数:4
相关论文
共 25 条
[1]   Infrared Array Camera (IRAC) colors of young stellar objects [J].
Allen, LE ;
Calvet, N ;
D'Alessio, P ;
Merin, B ;
Hartmann, L ;
Megeath, ST ;
Gutermuth, RA ;
Muzerolle, J ;
Pipher, JL ;
Myers, PC ;
Fazio, GG .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2004, 154 (01) :363-366
[2]  
[Anonymous], IAU S
[3]   The fourth catalogue of Population I Wolf-Rayet stars in the Large Magellanic Cloud [J].
Breysacher, J ;
Azzopardi, M ;
Testor, G .
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1999, 137 (01) :117-145
[4]   Hubble Space Telescope wide field planetary camera 2 imaging of shocks in superbubbles [J].
Chen, CHR ;
Chu, YH ;
Gruendl, RA ;
Points, SD .
ASTRONOMICAL JOURNAL, 2000, 119 (03) :1317-1324
[5]   X-RAYS FROM SUPERBUBBLES IN THE LARGE MAGELLANIC CLOUD .3. X-RAY-DIM SUPERBUBBLES [J].
CHU, YH ;
CHANG, HW ;
SU, YL ;
MACLOW, MM .
ASTROPHYSICAL JOURNAL, 1995, 450 (01) :157-162
[6]   X-RAYS FROM SUPERBUBBLES IN THE LARGE MAGELLANIC CLOUD [J].
CHU, YH ;
MACLOW, MM .
ASTROPHYSICAL JOURNAL, 1990, 365 (02) :510-&
[7]   BOK GLOBULES AND SMALL MOLECULAR CLOUDS - DEEP IRAS PHOTOMETRY AND (CO)-C-12 SPECTROSCOPY [J].
CLEMENS, DP ;
YUN, JL ;
HEYER, MH .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1991, 75 (03) :877-904
[8]   Energy crisis in the superbubble DEM L192 (N51D) [J].
Cooper, RL ;
Guerrero, MA ;
Chu, YH ;
Chen, CHR ;
Dunne, BC .
ASTROPHYSICAL JOURNAL, 2004, 605 (02) :751-758
[9]   Magnetic fields in molecular clouds: Observations confront theory [J].
Crutcher, RM .
ASTROPHYSICAL JOURNAL, 1999, 520 (02) :706-713
[10]   Analysis of isoplanatic high resolution stellar fields by the StarFinder code [J].
Diolaiti, E ;
Bendinelli, O ;
Bonaccini, D ;
Close, L ;
Currie, D ;
Parmeggiani, G .
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 2000, 147 (02) :335-346