APOD: Lynds Dark Nebula 1251 (2019 May 31)

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APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by APOD Robot » Fri May 31, 2019 4:21 am

Image Lynds Dark Nebula 1251

Explanation: Stars are forming in Lynds Dark Nebula (LDN) 1251. About 1,000 light-years away and drifting above the plane of our Milky Way galaxy, the dusty molecular cloud is part of a complex of dark nebulae mapped toward the Cepheus flare region. Across the spectrum, astronomical explorations of the obscuring interstellar clouds reveal energetic shocks and outflows associated with newborn stars, including the telltale reddish glow from scattered Herbig-Haro objects seen in this sharp image. Distant background galaxies also lurk on the scene, visually buried behind the dusty expanse. The deep telescopic field of view imaged with broadband filters spans about two full moons on the sky, or 17 light-years at the estimated distance of LDN 1251.

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Ann
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Re: APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by Ann » Fri May 31, 2019 5:23 am

The bright orange star seen right next to LDN 1251 is HD 214710. According to the not-too-precise parallax measurements of Hipparcos, the distance to HD 214710 is about 700 light-years. If this is true, then HD 214710 is a foreground object, and it has nothing to do with LDN 1251.

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Re: APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by AVAO » Fri May 31, 2019 7:48 am

I think, one of the most interesting Herbig-Haro objects in IDN1251 is HH149. The brightest star, in the picture above right (Close up/ 2nd picture), is probably a double star system. (As far as this can be judged by the Hubble picture resolution)...

Source: Hubble WFC3

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Re: APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by Case » Fri May 31, 2019 9:33 am

Ann wrote:
Fri May 31, 2019 5:23 am
According to the not-too-precise parallax measurements of Hipparcos, the distance to HD 214710 is about 700 light-years.
Gaia measured the parallax too, resulting in an even closer 626 ±13 lightyears.

Gaia DR2 Basic search:

Code: Select all

‘HD 214710’ resolved as source_id 2279611002534410496 at ra 339.3047707962105, dec 75.37184381406041
Gaia DR2 Advanced search ADQL:

Code: Select all

SELECT source_id, dist.r_est, dist.r_lo, dist.r_hi
FROM external.gaiadr2_geometric_distance as dist
WHERE source_id=2279611002534410496
(~192 ±4 parsec)

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Ann
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Re: APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by Ann » Fri May 31, 2019 10:23 am

Case wrote:
Fri May 31, 2019 9:33 am
Ann wrote:
Fri May 31, 2019 5:23 am
According to the not-too-precise parallax measurements of Hipparcos, the distance to HD 214710 is about 700 light-years.
Gaia measured the parallax too, resulting in an even closer 626 ±13 lightyears.

Gaia DR2 Basic search:

Code: Select all

‘HD 214710’ resolved as source_id 2279611002534410496 at ra 339.3047707962105, dec 75.37184381406041
Gaia DR2 Advanced search ADQL:

Code: Select all

SELECT source_id, dist.r_est, dist.r_lo, dist.r_hi
FROM external.gaiadr2_geometric_distance as dist
WHERE source_id=2279611002534410496
(~192 ±4 parsec)
Thanks, Case! :D

I've got to learn to do the Gaia search myself soon.

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Re: APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by orin stepanek » Fri May 31, 2019 10:54 am

Nice photo! :D Lynds; Where Y is used as a vowel! 8-)
Orin

Smile today; tomorrow's another day!

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Re: APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by Boomer12k » Sat Jun 01, 2019 1:29 am

Awesome detail and close up....

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Re: APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by Ann » Sat Jun 01, 2019 4:05 am

AVAO wrote:
Fri May 31, 2019 7:48 am
I think, one of the most interesting Herbig-Haro objects in IDN1251 is HH149. The brightest star, in the picture above right (Close up/ 2nd picture), is probably a double star system. (As far as this can be judged by the Hubble picture resolution)...

Source: Hubble WFC3
Those are nice pictures, AVAO. Where do you find them? You posted a nice picture of the nuclear ring of M95, too.

I can see, when quoting you post, that the Herbig-Haro object picure is an Instagram one. I don't have Instagram myself.

Do you just find these pictures on Instagram, or do you belong to an astronomical community there?

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Re: APOD: Lynds Dark Nebula 1251 (2019 May 31)

Post by AVAO » Sat Jun 01, 2019 10:21 am

Oh. ThanX 4 your interest. I'm just an amateur, but a big, big APOD fan!
The pictures for my insta account I produce myself.
For my composite images I normaly use NASA and ESA sources.

Jack from the AVAO Team