Pulsating delta scuti (type DSCT)

Variables of type δ Scuti. These are pulsating variables of the spectral types A0-F5 III-V that show light amplitudes of 0.003 to 0.9 mag in V (those with amplitudes greater than 0.15 mag and asymmetric light curves are called HADS) and periods of 0.01 to 0.2 days. The shapes of the light curves, periods and amplitudes generally vary greatly. Radial and non-radial pulsations are observed. The variability of some members of this type appears sporadically and sometimes ceases completely, as a result of strong amplitude modulation with the lowest amplitude value not exceeding 0.001 mag. in some cases. The maximum expansion of the surface layer does not lag behind the maximum light for more than 0.1 periods. DSCT stars are representatives of the galactic disk (flat component), SXPHE stars are objects of the halo.

 

(description according to VARIABLE STAR TYPE DESIGNATIONS IN VSX at https://www.aavso.org/vsx/index.php?view=about.vartypes)

Star GSC 03634-01602

Variable type DSCT (δ Scuti ) in the constellation Andromeda, discovered on 24/01/2017 and registered in VSX with the code 000-BMD-929. The graph represents the phase diagram 0-2.

  • Name: GSC 03634-01602 

  • AAVSO UID: 000-BMD-929 

  • Constellation: Andromeda 

  • J2000.0: 22 59 58.25 +51 05 34.1  (344.99271 +51.09281)

  • B1950.0: 22 57 46.24 +50 49 27.3

  • Galactic coord.: 105.687 -8.008

  • Other names: 2MASS J22595825+510341, UCAC4 706-110263, USNO-A2.0 1350-17672509, USNO-B1.0 1410-0474048  

  • Mag. range: 13.47 - 13.55 V

  • Epoch: 20 Jan 2017 (HJD 2457774.379) 

  • Period0.088445 d  (2.1227 h)

Star GSC 02901-01068

Variable type DSCT (δ Scuti ) in the constellation of Perseus, discovered on 30/01/2017 and registered in VSX with the code 000-BMF-157. The graph represents the phase diagram 0-2.

  • Name: GSC 02901-01068 

  • AAVSO UID: 000-BMF-157 

  • Constellation: Perseus

  • J2000.0: 04 45 43.24 +41 47 55.3  (71.43016 +41.79870)

  • B1950.0: 04 42 13.12 +41 42 28.9

  • Galactic coord.: 162.477 -2.410

  • Other names: 2MASS J04454324+4147553, UCAC4 659-025949, USNO-A2.0 1275-03695534, USNO-B1.0 1317-0108274  

  • Mag. range: 12.25 - 12.28 V

  • Epoch: 18 Jan 2017 (HJD 2457771.545) 

  • Period0.0909 d  (2.18 h)