J/ApJS/256/46 Distances & color excesses of high gal. mol. clouds (Sun+, 2021)
The extinction and distance of the MBM molecular clouds at high galactic
latitude.
Sun M., Jiang B., Zhao H., Ren Y.
<Astrophys. J. Suppl. Ser., 256, 46 (2021)>
=2021ApJS..256...46S 2021ApJS..256...46S
ADC_Keywords: Molecular clouds; Stars, distances; Extinction; Optical;
Ultraviolet
Keywords: Interstellar dust ; Ultraviolet extinction ;
High latitude field ; Distance measure ; Molecular clouds
Abstract:
Based on the accurate color excess EGBP,GRP of more than 4 million
stars and the ENUV,GBP of more than 1 million stars from Paper I
(Sun+, 2021ApJS..254...38S 2021ApJS..254...38S), the distance and extinction of the
molecular clouds (MCs) in the Magnani-Blitz-Mundy (MBM;
1985ApJ...295..402M 1985ApJ...295..402M) catalog at |b|>20° are studied in combination
with the distance measurement of Gaia/EDR3. The distance, as well as
the color excess, is determined for 66 MCs. The color excess ratio
ENUV,GBP/EGBP,GRP is derived for 39 of them, which is obviously
larger and implies more small particles at smaller extinction. In
addition, the scale height of the dust disk is found to be about 100
pc and becomes large at the anticenter direction due to the disk
flaring.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 118 66 Distances and color excesses of the molecular clouds
table2.dat 39 36 Magnani-Blitz-Mundy (MBM; 1985ApJ...295..402M 1985ApJ...295..402M)
molecular clouds associated with Lynds dark cloud
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
VII/7 : Lynds' Catalogue of Dark Nebulae (LDN) (Lynds 1962)
J/A+AS/103/541 : Arcetri Catalogue of H2O Maser Sources (Brand+ 1994)
J/A+A/327/325 : Distances of molecular cloud (May+, 1997)
J/A+A/383/631 : Catalogue of dust clouds in the Galaxy (Dutra+, 2002)
J/ApJ/623/897 : Reddening and extinction at high gal. latitude (Larson+, 2005)
J/PASJ/57/917 : CO clouds in southern Galactic Warp (Nakagawa+, 2005)
J/ApJ/706/727 : Distance and mass of Infrared Dark Clouds (Marshall+, 2009)
J/ApJ/699/1153 : Kinematic distances to GRS clouds (Roman-Duval+, 2009)
J/PASJ/63/S1 : Atlas and cat. of dark clouds based on 2MASS (Dobashi+, 2011)
J/ApJS/212/2 : Giant clouds in the 4th Galactic quadrant (Garcia+, 2014)
J/ApJ/786/29 : Catalog of distances to molecular clouds (Schlafly+, 2014)
J/ApJ/834/57 : MW molecular clouds from 12CO (Miville-Deschenes+, 2017)
J/ApJ/861/153 : Ultraviolet Extinction in the GALEX Bands. UVEXT (Sun+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [MBM]
5- 7 I3 --- MBM MBM cloud series number,
Magnani+ (1985ApJ...295..402M 1985ApJ...295..402M)
9- 15 F7.3 deg GLON Galactic longitude
17- 23 F7.3 deg GLAT [-52.3/44.7] Galactic latitude
25- 27 I3 pc Dist1 [86/400]? Distance,
Zucker+ (2019ApJ...879..125Z 2019ApJ...879..125Z)
29- 31 I3 pc Dist2 [56/366]? Distance,
Schlafly+ (2014, J/ApJ/786/29)
33- 35 I3 pc Dist3 [63/409] Distance, this work
37- 41 F5.1 pc e_Dist3 [0.1/182.1] Uncertainty in Dist3
43- 46 F4.2 mag E0opt [0.06/0.28] Foreground fitting parameter,
optical extinction
48- 53 F6.4 mag e_E0opt [0.0003/0.012] Uncertainty in E0opt
55- 57 I3 pc hpopt [51/468] Foreground fitting parameter,
h' optical scale-height
59- 63 F5.1 pc e_hpopt [0.9/137.2] Uncertainty in hpopt
65- 68 F4.2 mag dEMCopt [0.06/0.9] Optical color-excess jump of cloud
70- 75 F6.4 mag e_dEMCopt [0.0005/0.11] Uncertainty in dEMCopt
77- 80 F4.1 --- Area [2/72] The multiples of the cloud's angular
diameter
82- 85 F4.2 mag E0nuv [0.14/0.95]? Foreground fitting parameter,
NUV extinction
87- 92 F6.4 mag e_E0nuv [0.0036/0.06]? Uncertainty in E0nuv
94- 96 I3 pc hpnuv [70/490]? Foreground fitting parameter,
h', NUV scale height
98-101 F4.1 pc e_hpnuv [4.9/94.6]? Uncertainty in hpnuv
103-106 F4.2 mag dEMCnuv [0.14/1.51]? NUV color-excess jump of cloud
108-113 F6.4 mag e_dEMCnuv [0.0082/0.084]? Uncertainty in dEMCnuv
115-118 F4.2 --- CERs [1.64/5.75]? Color excess ratio, this work
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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- 3 A3 --- --- [MBM]
5- 7 I3 --- MBM MBM cloud series number,
Magnani+ (1985ApJ...295..402M 1985ApJ...295..402M)
9- 11 A3 --- --- [LDN]
12- 15 I4 --- LDN Lynds (1962, Cat. VII/7) dark nebula name
17- 21 F5.3 deg2 AreaM [1.2/2.84] Cloud area, from MBM
23- 27 F5.3 deg2 AreaL [0.018/1.8] Cloud area, from LDN
29- 33 F5.3 mag EmaxM [0.5/2.4] Maximum optical color excess, MBM
35- 39 F5.3 mag EmaxL [0.005/1.95] Maximum optical color excess, LDN
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 15-Feb-2022