J/ApJS/155/577 H2O masers in W49 North and Sagittarius B2 (McGrath+, 2004)
H2O masers in W49 north and Sagittarius B2.
McGrath E.J., Goss W.M., De Pree C.G.
<Astrophys. J. Suppl. Ser., 155, 577-593 (2004)>
=2004ApJS..155..577M 2004ApJS..155..577M
ADC_Keywords: H II regions ; Masers
Keywords: H II regions - ISM: individual (Sagittarius B2, W49A) - masers
Abstract:
Using the Very Large Array (VLA) of the National Radio Astronomy
Observatory in the A and B configurations, we have obtained
simultaneous high-resolution observations of both the 22GHz H2O maser
lines as well as the 22GHz continuum for the H II regions W49N and
Sagittarius B2.
Description:
Observations of W49N and Sgr B2 were carried out with the VLA in both
A and B configurations using the correlator in line mode with two
intermediate frequencies (IFs) at 22GHz, in 1998 and 1999.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tables.dat 62 494 *Water maser positions and velocities
--------------------------------------------------------------------------------
Note on tables.dat: Objects identified as [MGD2004] HHMMSS.sss+DDMMSS.ss
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tables.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- Region Region (1)
17- 18 I2 h RAh Right ascension (B1950)
20- 21 I2 min RAm Right ascension (B1950)
23- 28 F6.3 s RAs Right Ascension (B1950) (2)
30 A1 --- DE- Declination sign (B1950)
31- 32 I2 deg DEd Declination (B1950)
34- 35 I2 arcmin DEm Declination (B1950)
37- 41 F5.2 arcsec DEs Declination (B1950) (2)
43- 48 F6.1 km/s VLSR Local Standard of Rest velocity
50- 56 F7.2 Jy S22GHz The 22GHz flux density
58- 62 F5.2 Jy e_S22GHz The error in S22GHz
--------------------------------------------------------------------------------
Note (1): Regions are W49A North, SgrB2 Main, SgrB2 Mid-North, SgrB2 North
and SgrB2 South
Note (2): Relative positional errors are ∼0.005arcsec in RA and DE.
Absolute errors are ∼0.05arcsec.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 23-Jan-2007