HE 0307-4554

All names: 2MASS J03092595-4543331, HE0307-4554, TIC 301022374, Gaia DR2 4751251259885253120, Gaia EDR3 4751251259885253120, GALEX J030925.9-454332, Gaia DR3 4751251259885253120, HE 0307-4554

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 03 09 25.98 (0.03) 03 09 25.93 03 09 25.94 (0.03)
Declination -45 43 33.12 (0.03) -45 43 32.99 -45 43 33.01 (0.03)
Spectral type sdB sdB
Effective temperature [K]
log(g) [cgs]
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 1.27 (0.03) 1.26 (0.04) 1.27 (0.03)
Distance [pc] 784.81 (20) 793.46 (25) 784.81 (20)
Composition
Proper motion (right ascension) [mas/yr] 20.267 (0.04) 20.182 (0.07) 20.267 (0.04)
Proper motion (declination) [mas/yr] -7.231 (0.04) -6.927 (0.08) -7.231 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude 15.06
R magnitude
I magnitude
J magnitude 15.53 (0.06) 15.53 (0.06)
H magnitude 15.51 (0.1) 15.51 (0.1)
K magnitude 15.69 (0.2) 15.69 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.00 (0.003) 15.02 (0.0009) 15.00 (0.003)
BP magnitude 14.88 (0.004) 14.82 (0.005)
RP magnitude 15.23 (0.004) 15.23 (0.003)
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.011

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit




The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.