J/MNRAS/422/3178 Distances of 793 BGPS sources (Eden+, 2012)
Star formation towards the Scutum tangent region and the effects of galactic
environment.
Eden D.J., Moore T.J.T., Plume R., Morgan L.K.
<Mon. Not. R. Astron. Soc., 422, 3178-3188 (2012)>
=2012MNRAS.422.3178E 2012MNRAS.422.3178E
ADC_Keywords: Molecular clouds ; Stars, distances ; Radial velocities
Keywords: stars: formation - ISM: clouds - ISM: individual objects: W43 -
Galaxy: kinematics and dynamics
Abstract:
By positional matching to the catalogue of Galactic Ring Survey
molecular clouds, we have derived distances to 793 Bolocam Galactic
Plane Survey (BGPS) sources out of a possible 806 located within the
region defined by Galactic longitudes l=28.5°-31.5° and
latitudes |b|≤1°. This section of the Galactic plane contains
several major features of Galactic structure at different distances,
mainly mid-arm sections of the Perseus and Sagittarius spiral arms and
the tangent of the Scutum-Centaurus arm, which is coincident with
the end of the Galactic long bar. By utilizing the catalogued cloud
distances plus new kinematic distance determinations, we are able to
separate the dense BGPS clumps into these three main line-of-sight
components to look for variations in star formation properties that
might be related to the different Galactic environments. We find no
evidence of any difference in either the clump mass function or the
average clump formation efficiency (CFE) between these components that
might be attributed to environmental effects on scales comparable to
Galactic structure features.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 45 664 Summary of GRS cloud parameters and
BGPS source associations
table2.dat 31 141 Summary of unassociated BGPS sources and their
derived kinematic distances
table3.dat 60 112 Summary of GRS cloud parameters, number of BGPS
source associations and the associated BGPS
source masses
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See also:
J/ApJ/699/1153 : GRS molecular clouds kinematic distances (Roman-Duval+, 2009)
J/ApJS/182/131 : Molecular clouds and clumps in the GRS (Rathborne+, 2009)
J/ApJ/723/492 : GRS molecular clouds physical properties (Roman-Duval+, 2012)
J/ApJ/721/137 : Bolocam Galactic Plane Survey (BGPS) (Bally+, 2010)
J/ApJS/188/123 : Bolocam Galactic Plane Survey (BGPS). II. (Rosolowsky+, 2010)
J/ApJS/195/14 : Bolocam Galactic Plane Survey (BGPS). V. (Schlingman+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- GRS GRS cloud name (GLLL.ll+BB.bb)
15- 20 F6.2 km/s Vlsr GRS cloud LSR velocity
22- 26 F5.2 kpc Dist ?=- GRS cloud Distance
28- 31 I4 --- BGPS [3984/4789] BGPS source number (G1)
33- 38 F6.3 deg GLON BGPS source Galactic longitude
40- 45 F6.3 deg GLAT BGPS source Galactic latitude
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- BGPS [3984/4789] BGPS source number (G1)
6- 10 F5.2 deg GLON BGPS source Galactic longitude
12- 16 F5.2 deg GLAT BGPS source Galactic latitude
18- 23 F6.2 km/s Vlsr BGPS source LSR velocity
25- 29 F5.2 kpc Dist BGPS source distance
31 A1 --- Sel [y] Scale height selected?
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- GRS GRS (Galactic Ring Survey) cloud name
(GLLL.ll+BB.bb)
15- 19 F5.2 deg GLON Galactic longitude
21- 25 F5.2 deg GLAT Galactic latitude
27- 32 F6.2 km/s Vlsr LSR velocity
35- 42 F8.1 Msun Mcloud ?=- Cloud mass
44- 48 F5.2 kpc Dist ?=- Cloud distance
50- 51 I2 --- NBGPS [0/44] Number of BGPS sources (see table1)
53- 60 F8.1 Msun Mclump ?=- Clump mass
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Global Notes:
Note (G1): BGPS = Bolocam Galactic Plane Survey, see Aguirre et al.
2011ApJS..192....4A 2011ApJS..192....4A, and Rosolowsky et al. 2010, Cat. J/ApJS/188/123
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 23-Jan-2013