TY - JOUR
T1 - Far-infrared and submillimeter observations of the low-luminosity protostars L1455 FIR and L1551 IRS 5 - The confinement of bipolar outflows
AU - Davidson, J. A.
AU - Jaffe, D. T.
PY - 1984/2/1
Y1 - 1984/2/1
N2 - Far-IR observations of L1455 FIR and L1551 IRS 5 obtained in December,
1981, and in September, 1982, and January, 1983, respectively, using the
H-1 and G-2 bolometer systems on the 91-cm telescope of the NASA Kuiper
Aiborne Observatory are reported. Additional observations at 400 microns
were obtained with UKIRT in November, 1981, (L1551) and with NASA IRTF
in November, 1982 (L1455). The results are presented in tables and
graphs, and L1455 and L1551 are compared with other objects in terms of
central-star parameters, clouds, and overflows. The characteristics
calculated for L1455 and L1551 include luminosity 1.5 and 23 solar
luminosity, size less than 7 x 10 to the 16th cm, H2 density greater
than or equal to 4 x 10 to the 5th and 1 x 10 to the 6th/cu cm, and 35-K
dust cores of 0.2 and 0.7 solar mass, respectively. The bipolar
appearance of the L1551 outflow is attributed to circumstellar material
only.
AB - Far-IR observations of L1455 FIR and L1551 IRS 5 obtained in December,
1981, and in September, 1982, and January, 1983, respectively, using the
H-1 and G-2 bolometer systems on the 91-cm telescope of the NASA Kuiper
Aiborne Observatory are reported. Additional observations at 400 microns
were obtained with UKIRT in November, 1981, (L1551) and with NASA IRTF
in November, 1982 (L1455). The results are presented in tables and
graphs, and L1455 and L1551 are compared with other objects in terms of
central-star parameters, clouds, and overflows. The characteristics
calculated for L1455 and L1551 include luminosity 1.5 and 23 solar
luminosity, size less than 7 x 10 to the 16th cm, H2 density greater
than or equal to 4 x 10 to the 5th and 1 x 10 to the 6th/cu cm, and 35-K
dust cores of 0.2 and 0.7 solar mass, respectively. The bipolar
appearance of the L1551 outflow is attributed to circumstellar material
only.
KW - Infrared Astronomy
KW - Pre-Main Sequence Stars
KW - Stellar Envelopes
KW - Stellar Spectrophotometry
KW - Stellar Winds
KW - Far Infrared Radiation
KW - Protostars
KW - Stellar Luminosity
KW - Stellar Spectra
KW - Submillimeter Waves
U2 - 10.1086/184191
DO - 10.1086/184191
M3 - Article
VL - 277
JO - The Astrophysical Journal
JF - The Astrophysical Journal
SN - 0004-637X
ER -